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Forensic Engineering Expert Witnesses

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William Acorn, P.E., FASHRAE
10617 N Hayden Rd, Suite B-108
Scottsdale AZ 85260
phone: (602) 888-7250
fax: 520-577-0851
William Acorn Technology Analysis ExpertWilliam R. Acorn is founder of Acorn Consulting Services, LLC, an engineering firm. As a consulting mechanical engineer, Bill provides project analysis, forensic reconstructions and litigation support services relating to the design, delivery and functioning of high-tech manufacturing facilities, semiconductor fabrication facilities, institutional laboratories, data centers, health care facilities and a variety of commercial buildings. He is a recognized expert in the evaluation of deficiencies in HVAC systems, cleanrooms, piping systems, refrigeration systems, construction defects, building and fire code compliance, and patent and trade secret disputes. He represents both plaintiffs and defendants.

Bill has more than 40 years of experience as a professional engineer and is a recognized expert in assessing, evaluating, remediating and providing testimony on complex project design, construction and operational matters. His consulting expertise has been influential in shaping approaches to code compliance and life safety in semiconductor and similar advanced technology facilities.

  • Registered as a Professional Mechanical Engineer in the States of Arizona, California, Colorado, Illinois, Iowa, Nevada, New Hampshire, New Mexico, Oregon, Texas, Washington and Utah.
  • Registered with the National Council of Examiners for Engineering and Surveying NCEES (Certificate No. 6999)
  • Fellow in the HVAC industry leading organization ASHRAE
  • Visiting lecturer at the Arizona State University Del E. Webb School of Construction in Tempe, AZ
  • Advisor to CREATE, ACE – Alliance for Construction Excellence and the IAB – Industry Advisory Board, all affiliated with ASU

    Building Systems Analysis:

  • HVAC and Refrigeration
  • Process and Power Piping
  • Plumbing Systems
  • Standard of Care in Design and Construction
  • Chemical Exposures in the Workplace
  • Cleanroom Design and Performance
  • Codes and Standards
  • Patent and Trade Secret Disputes

    Bill’s pragmatic approach to both forensic and litigation consulting as well as project consulting is based on more than 40 years of real-world experience as a design professional, mentor and forensic analyst, as well as many years as an instructor in professional and academic settings.

    Litigation Support:

  • Forensic Analysis
  • Strategic Litigation Consulting
  • Trial Demonstratives
  • Expert Testimony

    Forensic Analysis, litigation consulting and expert testimony. Represented both plaintiffs and defendants in a variety of jurisdictions throughout the US and Asia.

    Bill’s ability to explain complex issues to non-technical audiences, including juries, mediators and judges, is a key to successfully solving your litigation challenges.

    Consulting Services:

    Services range from peer review to conceptual design to development of strategies and programs for expedited project delivery.

    Bill frequently acts as an owner’s agent and mentor, functioning as an extension of the owner’s project team. On other projects, Bill serves as a subject matter expert assisting project delivery firms in their development of viable solutions and review of construction documents.

    As a project consultant, Bill assures the project gets off to the right start and provides his expertise through completion and operation to maximize return on investment.

    Consulting Expertise Includes:

  • Project Design and Management Consulting
  • Forensic Analysis and Litigation Consulting
  • Mentoring & Advanced Education
  • 4/11/2005 · Construction
    Introduction: In our first Volume of the Forensic Exchanger, we discussed some of the all too many reasons why HVAC systems fail. If you missed that edition and are interested in that topic e-mail us and we will gladly send it to you. We will follow up with more discussion of that important topic in later editions

    William R. Acorn
    Facilities which utilize hazardous liquids and gases represent a significant potential liability to the owner, operator, and general public in terms of personnel safety and preservation of assets. It is obvious that a catastrophic incident or loss of property or personnel is to be avoided at all costs. This book was conceived to give the reader a guide to understanding the requirements of the various codes and regulations that apply to the design, construction, and operation of facilities utilizing hazardous materials in their processes.
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    Julian M. Toneatto, PhD, PE, PP
    PO Box 133
    Lafayette Hill PA 19444
    phone: 609-502-0900
    Julian M. Toneatto, PhD, PE, PP, has over 40 years of experience in Civil, Structural, and Environmental Engineering Consulting.

    Dr. Toneatto has a Doctorate in Structures and Dynamics and MBA in Finance. His former employers include the Department of Defense, U.S. Army Corps of Engineers, States, Municipalities, DOT, private and public firms, and the EXXON Corporation.

    Dr. Toneatto served as a Professor of Civil Engineering and Course Director at the Department of Civil Engineering, U.S. Military Academy. He structured, revised, and taught courses in Advanced Structural Analysis, the Honors Course in Structural Analysis and Steel Design, and authored and taught Soil Mechanics. Dr. Toneatto has also served on the faculty at USMA (West Point): Department of Civil and Mechanical Engineering, Philadelphia University and The US Army Engineer School at Fort Leonard Wood, MO.

    Litigation Support - Dr. Toneatto has been offering his expert witness services to the legal industry for decades. A Forensic Engineer, he provides expert reports, depositions, and court testimony in support of litigation.

    Areas of Expertise:
    • Forensic Engineering
    • Civil Engineering
    • Structural Engineering
    • Environmental Engineering
    • Materials Engineering
    • Safety Engineering
    • Failure Analysis
  • Geotechnical Engineering
  • Construction Damages
  • Petroleum Engineering
  • Corrosion
  • Land Use and Zoning
  • Occupational Health / Environmental Health
  • Product Liability - Consumer Safety
  • View Dr. Toneatto's Consulting Profile.
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    Tarek Omar, PhD
    Owner / President
    8360 Greensboro Dr., Suite 924
    McLean VA 22102
    phone: 703-544-8948
    Tarek-Omar-Forensic Engineering-Expert-Photo.jpg
    Dr. Tarek Omar, is a Mechanical and Structural Engineering expert with over 24 years of leading edge experience in the areas of accident investigation and reconstruction, highway safety, automotive / vehicular engineering, security barriers and structural analysis.

    From 1994 to 2002, Dr. Omar worked as a Senior Research Scientist at the National Crash Analysis Center (NCAC), the renowned research center created in 1992 as a successful collaborative effort among the Federal Highway Administration (FHWA), the National Highway Traffic Safety Administration (NHTSA), and George Washington University (GWU). The NCAC supports the US-DOT strategic goal to reduce fatalities and injuries on the nation's roadways and has successfully served to enhance safety worldwide. Dr, Omar completed numerous research projects in vehicle crash analysis, vehicle crashworthiness, and highway safety.

    In 2002, Dr. Omar founded his consulting firm, Advanced Research and Technology Corp (ART). In his role as President and Senior Consultant, he directs and conducts advanced Design and Nonlinear Finite Element Analysis (FEA) in the areas of Structural Impacts, Transportation Safety, and Physical Security Protection.

    Litigation Support - Dr. Omar and his team at ART provide clients with the compelling scientific evidences necessary to pursue and win complex specialty lawsuits including but not limited to vehicle crash, airbag and seatbelt fatalities and injuries, slip, trip & falls, occupant biomechanics, crashworthiness, and failure analysis, fuel tank, pipelines, and pressure vessel analysis.

    ART experts are widely recognized as a world leader in advanced computer simulations of complicated structural dynamics, crash, and impact-related problems. They use state-of-the-art technology including 3-D computer animation engineering and modeling and the latest engineering techniques for crash analysis (frontal, side-impact, vehicle, rollover, etc.), crash scene investigation, crash test data analysis (FMVSS, NCAP, IIHS, etc.), crash statistical data analysis (NASS, FARS, etc.), occupant kinematics, occupant protection, biomechanics, vehicle dynamics, and computerized crash simulations.

    Areas of Expertise:
    • Accident Investigation
    • Accident Reconstruction
    • Transportation Safety
    • Mechanical Design
    • Structural Analysis
    • Accident Biomechanics
  • Failure Analysis
  • Vehicle Dynamics
  • Crashworthiness
  • Materials Testing and Evaluation
  • Vehicle Damage / Crush Analyses
  • Intellectual Property / Patent Infringement
  • View ART's Consulting Profile.
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    Jason Young, BESc., MASc, PEng
    2770 Dufferin Street, Suite 207
    Toronto ON M6B 3R7
    phone: 416-630-0700
    Jason Young, BESc., MASc, PEng, is the lead investigator and President of Advantage Forensics Inc., a multi-disciplinary forensic engineering firm based in Ontario with service across Canada and the U.S. Their team of renowned and well-respected experts at Advantage Forensics have conducted thousands of forensic investigations in the following areas of expertise, at fair rates, with tremendous success for insurance defense and plaintiff clients
    • Collision Reconstruction - pedestrian, nighttime visibility, motorcycle, bicycle, trucks, data recorder download & analysis, multi-vehicle freeway collisions, computer simulation, winter maintenance, snowmobile, Segways
    • Human Factors - reaction times, driver behavior, road design & signage, warnings & labels, product misuse
    • Slips, Trips & Falls - friction testing, staircase building code assessment, fall hazard assessment
    • Biomechanics - seatbelt use, injury thresholds, fraud investigations, fall dynamics
    • Product Failure - materials failure, design assessment, safety factor testing
    • Playground, Fitness Equipment & Sports Accidents
    • Waterpark, Pool, Zipline & Amusement Ride Accidents
    • Fire & Explosion Investigation
    Their team of over 25 experts and consultants is led by Jason Young, a licensed professional engineer and seasoned expert with over 20 qualifications at Superior Court level and Arbitrations as an expert in Collision Reconstruction, Human Factors, Mechanical Engineering, Road Design Assessment, Waterslide Design, and Biomechanics. Mr. Young has a Masters in Biomedical Engineering and is also a Certified Playground Inspector and Certified Level 2 Zipline & Challenge Course Inspector. Mr. Young has taught numerous courses on Collision Reconstruction, Human Factors and Biomechanics to academia and is a sought-out expert panelist at insurance and research conferences in those fields. Mr. Young is a long-time member of CATAIR, HFES, and ASTM, and has contributed to numerous research papers and standards in collision reconstruction, human factors, and product design.

    Visit their website at for more information regarding their team of experts and services. They offer reasonable hourly rates or fixed quotes that are guaranteed within 10%.

    View Advantage Forensics' Consulting Profile.
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    Adam K. Aleksander
    PO BOX 140558
    Boise ID 83714
    phone: 208-321-0200
    Adam AleksanderDr. Adam K. Aleksander, PhD, PE, CSP, has over 40 years of experience in the areas of Mechanical Engineering, Human Factors, and Safety Engineering. He combines both academic credentials and active work in industry to provide a grounded perspective in Product Liability, Industrial Incidents, Warnings, and OSHA related issues. He is also a VP of an Energy Services firm, with over 35 overseas assignments related to forensic services, power utility issues, and equipment failures.

    Dr. Aleksander has been a practicing engineer since 1972, focusing his Manufacturing, Consulting and Forensic investigations on Problem Definition and Root Cause Analysis of complex problems in confidential issues. His firm has experience encompassing an enormous variety of claims, from large $45 million dollar dam claims, to environmental clean-up claims, to small road construction claims. His litigation services often involve reconstruction, perception reaction studies, warnings, equipment operation, mechanical failures, industrial accidents, skiing, and bicycling injuries.

    As an Expert Witness, Dr. Aleksander has worked with many clients, including plaintiff's and defendant's attorneys, both civil and criminal, attorneys representing corporations, corporations in the power utility area, and corporations that produce products. His services are also available to insurance executives with complex claims issues that involve industrial or utility related losses. Dr. Aleksander has been retained over 125 times in a wide range of technical investigations.

    Litigation Expertise:
    • Product Liability - Design, Manufacturing and Marketing Defects, Involving Damage, Injury or Fatality
    • Equipment Failures - Proximal Cause of Failure with Contributing Factors
    • Human Factors, Visibility, Ergonomics, and General Research Issues - Product Usability, Warnings, Instructions, Perception, Reaction Time, Visibility and Conspicuity Issues
    • Construction, OSHA, and Safety Engineering - Regulatory and Safety Issues
    • Industrial Projects
    • Power Utility - Service and Equipment Failures
    View Dr. Aleksander's Consulting Profile.
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    Allied Glass Experts, LLC
    Henry (Hank) H. Chamberlain
    5000 State Ave.
    Kansas City KS 66102
    phone: 913-287-9200
    Henry Chamberlain has 50 years of experience in the Glass Industry. His expertise includes just about all aspects of glass from engineering design, manufacturing, strengthening, testing, quality control, installation, fractography, and failure analysis of glass and glazing systems. His experience ranges from automotive, architectural, and industrial glass applications to glass consumer products.

    Mr. Chamberlain has held numerous leadership positions in professional associations and is a well-respected expert within the glass industry community. Since 1996, he has contributed to many different publications and given lectures and presentations on glass.

    Areas of Specialization:
    • Computational modeling for structural and thermal design optimization of glazing systems. Mr. Chamberlain was one of the first group of ten people certified by the National Fenestration Rating Council to serve as the "Individual-in-Responsible-Charge" of a laboratory accredited by NFRC to issue product ratings
    • Design, quality control, and testing of glass parts and glazing systems for demanding architectural and industrial applications
    • Angle specific spectral models for optimization of the optical properties of fenestration systems
    • Process control and quality control in the manufacture and fabrication of glass, with emphasis on insulating and laminating technology and the measurement and control of stress during annealing, toughening or bending processes
    • Fracture mechanics of glass
    • Specialized spectrophotometric polariscopes, instrumentation used to detect and analyze defects in glass products, and other optical instruments
    Litigation Support - Mr. Chamberlain provides expert Forensic Glass and Glazing litigation support. His expertise includes analysis of inclusions and defects, fractographic analysis, stress analysis, and expert opinion regarding glazing system design and glazing methods. Mr. Chamberlain's services are available to counsel representing both plaintiff and defendant.

    Areas of Expertise:
    • Glazing System Design
    • Glass Failure Analysis
    • Fractography
    • Finite Element Analysis (FEA)
    • Optics & Acoustics
  • Energy Efficiency
  • Process Control
  • Glass Testing
  • Glass Codes & standards
  • Glass Safety
  • View Henry Chamberlain's Consulting Profile.
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    Steven R. Thomas, P.E.
    Multiple Addresses (See Below)
    NJ, NH, ME, MA, VT ,RI, CT, NY, PA ,DE, USA
    phone: 877-267-7855
    fax: 973-401-0056 or 603-293-4142
    New Jersey Office:
    PMB 4066
    55 Madison Avenue - Ste 400
    Morristown, NJ 07960
    T: (973) 401-0010
    F: (973) 401-0056
    New Hampshire Office:
    Analytic Engineering
    105 Juniper Ridge Road
    Gilford, NH 03249
    T: (603) 293-4477
    F: (603) 293-4142

    Analytic Engineering combines Professional Engineering with Effective Communication. We offer Technical Analysis and Services in the Engineering field and provide experienced Expert Testimony to communicate the conclusions reached.

    Engineering Services:
  • Mechanical Engineering
  • Safety Engineering
  • Vehicular Accident Reconstruction
  • Failure Analysis
  • Computer Animation
  • Premises Liability
  • Patent Claim Analysis
  • Product Design & Liabilty
  • Product & Equipment
  • Design Engineering Services
  • Steven R. Thomas, PE, the Principal Engineer at Analytic Engineering, earned his Bachelor of Science - Engineering (Mechanical and Electrical) at Widener University, Chester, PA in 1979 and a Master of Science in Engineering Science (Safety Engineering and Human Factors) at The New Jersey Institute of Technology in 1997.

    Professional Experience: Steven R. Thomas, P.E. has worked for such organizations as General Motors, Thomas & Betts, General Cable and Breed Automotive Corporation. He has worked in the engineering fields of Research and Development, Product Design, Machine Design, Manufacturing, Industrial, Tooling, Safety, Facility Design, Failure Analysis and Accident Reconstruction. Since 1991 Mr. Thomas has worked as an Engineering Consultant in the Forensic field and has testified in numerous jurisdictions.
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    ANNA, Inc
    David Alley
    626 Admiral Drive C537
    Annapolis MD 21401
    phone: 410-353-4976
    David Alley is a Consulting and Forensic Engineer with over three decades of Design Engineering Experience, Field engineering experience and financial analysis experience for power Generation Projects in Cogeneration, Nuclear, Hydropower, Diesel Engine, Combustion Turbine and Gas Turbine Powered Power Generation Facilities. Mr. Alley is a National Electrical Code NFPA-70 expert and an Hazardous area delineation expert.

    BSEE-Clemson, MBA-Darden

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    40 Brambledown Road
    Wallington SM6 0TF
    phone: +442084012873
    Geoffrey Beresford Hartwell is a Chartered Engineer who practices as an Arbitrator, Adjudicator and Expert for Determination. Geoffrey is the former Senior Partner of Consulting Mechanical and Electrical Engineers BHA Cromwell House.

    A one time Chairman of the Expert Witness Society, Geoffrey Hartwell has experience giving evidence in court (in both civil and criminal matters) and in International Arbitration. He sometimes is retained as a Single Joint Expert or as a Tribunal Expert. His services are offered to both Plaintiff and Defense. Even when retained on behalf of a Client he, like all Experts, has an overriding responsibility to the Court or Tribunal.

    After his early career in aerospace and nuclear energy, Geoffrey entered private practice in association with the late Leslie Heap and Gerald Lewis of Heap and Digby, Consulting Engineers, in 1969. While with them he designed water and sewage equipment and also the bascule moving machinery for the Lowestoft Bridge, in Suffolk. He practiced also as Beresford Hartwell and Associates and, in 1971 established a separate office in Wallington, South London.

    In parallel with his design career, Geoffrey was first appointed as arbitrator in 1972 and his first foreign arbitration, an ICC appointment in Switzerland, took place later that year. He studied Law to Intermediate level and then transferred to the examinations of the Institute of Arbitrators (now Chartered) of which he became Chairman in 1996-1997 and for whom he taught in various countries on several courses, including the prestigious Diploma in International Commercial Arbitration.

    Technical Expertise:
    • Electrical Engineering and Design
    • Mechanical Engineering and Design
    • Instrumentation
    • Automation and Computer Control Systems
    • Maritime and Infrastructure Engineering
    • Process Engineering
    • Solid Waste Handling
  • Communications
  • Manufacturing
  • Computer Cartography
  • Moving Bridges and Lock Gates
  • Construction Project Management
  • Nuclear Energy
  • Water and Waste Water Treatment
  • Arbitration: Geoffrey Hartwell also acts as an arbitrator and adjudicator, as an expert mediator and conciliator, as an expert investigator and assessor for arbitral tribunals, and also as a Special Referee in the High Court of Justice of the Isle of Man. His services have been required in the UK and internationally.

    Dispute Boards: Geoffrey Hartwell has experience both as Member and as Chairman of Dispute Boards?. He has been a member of Dispute Boards, retained from the beginning of a project or, alternatively, appointed on an ad hoc basis when a problem arises, Dispute Adjudication Boards to determine a binding decision, and on Dispute Review Boards to make decisions that are advisory but not binding.

    Adjudication: Similar to arbitration, Mr. Hartwell adjudicates domestic and international disputes which are only temporarily binding unless otherwise agreed upon by the parties.

    View Geoffrey Beresford Hartwell's Consulting Profile.
    12/4/2013 · Mediation
    International Commercial Arbitration, the chosen basis of the annual Willem Vis Moot, is arguably not au fond a process at law. It is quite simply the performance of an agreement between two parties to have a chosen third party hear and determine some difference between them.

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    Helmut G. Brosz
    President & C.E.O
    See Website for USA Office Address
    64 Bullock Drive
    Markham Ontario L3P 3P2
    phone: 905-472-6660
    fax: 905-472-6665
    Brosz & Associates are Electrical Experts headed by President and C.E.O., Professor Helmut G. Brosz, B.A.Sc., D.B.A., F.A.A.F.S., P. ENG., Adjunct Professor at Ryerson University, Adjunct Assistant Professor at University of Toronto.

    They provide a wide range of highly specialized Forensic Science and Engineering, Accident Reconstruction, Testing, Commissioning, and Technical and Scientific Services. Their staff of specialists and experts have completed over 5,200 assignments since 1970 ranging from electrical accidents and electrocutions to electrical power system investigation and testing of equipment failures including circuit breakers, motors, switchgear, generators, transformers and appliances.

    Their engineering facilities at Brosz & Associates enables them to perform in-depth research, electrical testing, forensic laboratory testing, microscopy, macro photography and photographic documentation, X-Ray testing, infrared testing, high voltage testing, high current testing and more. Most of their testing equipment is portable and they are also capable of producing professional collages and scale models for reports, mediations, depositions and trial.

    Their clients include insurance companies, legal firms, adjusters, risk managers, manufacturers, contractors, utilities, governments and individuals.

    Services Include:
  • Cause and Origin Investigations
  • Failure Analysis
  • Loss Prevention and Mitigation
  • Subrogation Support for the Insurance Industry
  • Electrical Safety and Accident Prevention
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    Thomas H. Burtness, PE
    2195 Wagon Trail Rd.
    White Heath IL 61884
    phone: 217-687-2000
    Thomas Burtness Electrical Engineering Expert PhotoThomas H. Burtness, PE, is an Electrical Engineer specializing in both Electrical and Building Construction - equipment selection, specification, and installation (actually “working with the tools”), as well as cost control techniques.

    Background - Mr. Burtness has 40+ years of experience in the design, specification, construction contract administration, installation, startup, and troubleshooting of electrical power, on-site generation, distribution, control, and instrumentation systems and equipment for residential, commercial, industrial, and municipal occupancies. His experience also includes water, wastewater, and stormwater treatment plants, and military facilities.

    Additional expertise includes Illumination Engineering for street, roadway, and area lighting including photometric footcandle requirements, calculations, field verification, equipment specifications, installation, and analysis of failure, glare, overlighting and underlighting.

    Litigation Support - Since, 1981, Mr. Burtness has been providing forensic electrical engineering services to insurance companies and attorneys including accident and failure investigations, determination of cause and origin, litigation support, expert opinions, reports, and testimony. His services are available nationwide, with PE registration by comity available in most states.

    Cases Involve:
    • Industrial Accidents
    • Electrocution
    • Personal Injury
    • Fire
    • Equipment and Machinery Failure
  • Failure of Safety Circuitry
  • Grounding
  • Lightning Damage and Fire
  • Construction Defects / Contract Claims
  • Design and Specification Disputes
  • View Thomas Burtness' Consulting Profile.
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    Curt M. Freedman, PE, CEM, CEA, LEED AP
    24 Ridge Road
    Longmeadow MA 01106
    phone: 413-567-1175
    Curt Freedman Forensic Engineering Expert PhotoCurt M. Freedman, PE, CEM, CEA, LEED AP, has over 30 years of experience as a Mechanical Engineer. He is registered to practice in Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Maryland, and Ohio.

    Litigation Support - Mr. Freedman provides forensic engineering services for the insurance industry and attorneys representing Plaintiff and Defense. With a portable microscope diagnostic camera, his investigations include material science evaluations, as well as mechanical and structural evaluations. Mr. Freedman's background also includes designing, engineering, and constructing HVAC systems, plumbing systems, and utility conservation products for the residential, commercial, and industrial sector.

    Curt Freedman also offers professional forensic services for the Investigation of Child Heatstroke / Hot Car Incident Deaths. His detailed services in this area include evaluation, field testing, and analytic modeling to determine real time interior temperature of the subject vehicle.

    Areas of Expertise:
  • Appliances
  • Building Temperature Modeling
  • Carbon Dioxide Gas Testing
  • Carbon Monoxide Investigations
  • Compressed Air Systems
  • Construction Cost Evaluations
  • Controls Systems
  • Fire Sprinkler Systems
  • Flat Plate Solar Panels
  • Forklifts
  • Furnaces
  • Hydronic Boilers
  • Industrial Accidents
  • Fire Sprinkler Head Failures
  • Ladders
  • Loss of Heat / Fuel Freeze
  • Manufacturing Equipment Accidents
  • Metallic Pipe Fitting Failures
  • Motor Failures
  • Plastic Fitting Failures
  • Plumbing / Piping Systems
  • Rooftop HVAC Equipment
  • Stairs, Ramps
  • Slips & Falls
  • Steam Boilers
  • Photo-voltaic Solar Panels
  • Pump Failures
  • Solar Insolation Modeling
  • Toilet Failures
  • Water heater failures;

  • View Curt Freedman's Consulting Profile.
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    Harry G. Direen, PhD, PE
    Colorado Springs CO 80921
    phone: 877-869-5201
    Harry Direen, PhD, PE has over 30 years of experience as an engineer Designing and Developing Systems in the Electronics and Software Industry. He has taught engineering courses at the US Air Force Academy and at the University of Colorado. Dr. Direen currently works with a research group at the US Air Force Academy developing control systems and image processing using GPGPUs for UAVs. An inventor, he holds 3 United States patents.

    Litigation Support - Dr. Direen has significant experience as an expert witness supporting counsel and testifying in complex patent infringement cases. He has a broad base of knowledge in electronic and software systems gained from a long career developing a wide range of products and systems. His litigation experience also includes encryption / decryption methods associated with databases and signal processing.

    Dr. Direen has reverse engineered a variety of complex systems over the years, including: media players, modems, modem compression algorithms, coriolis mass flow meters, database systems, and a range of other products to support patent infringement cases generating detailed claim charts and writing expert reports to demonstrate infringement. He has successfully discovered and analyzed complex digital signal processing algorithms and pertinent operations within these products.

    Dr. Direen's expertise is available to counsel representing both plaintiff and defendant. He is highly proficient in explaining complex systems to laymen.

    Areas of Expertise:
    • Electronic Systems
    • Control Systems
    • Embedded Systems Design and Development
    • Databases
    • Control of UAVs / Drones
  • Robotics
  • Software
  • Signal Processing
  • Product Reverse Engineering
  • Intellectual Property
  • View Dr. Direen's Consulting Profile.
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    Gerald O. Davis, PE
    4723 Squaw Valley Court
    Glen Allen, VA
    VA, DC, MD, WV, NC USA
    phone: 804-967-9129
    fax: 804-967-9130
    Gerald O. Davis, PE, President and co-owner of DM&ME, has over 40 years experience in Metallurgy and Mechanical Engineering. Mr. Davis is a Forensic Expert in Metallurgy, Corrosion, Mechanical Failures, & Root-Cause Failure Analysis. His recent background includes work as a corrosion researcher, senior engineer, and program manager for Battelle Memorial Institute, DNV, Inc., Henkels & McCoy, Inc., respectively and, since 2004, as president of DM&ME.

    Mr. Davis has been offering Expert Witness Services for the past 14 years for product liability and personal injury evaluations. He is retained for his knowledge of Forensic Engineering and Root-Cause Failure Analysis. Mr. Davis is experienced with depositions and trial testimony. His services include specification and interpretation of metallurgical lab tests, review of mechanical failures and review of physical evidence and its meaning. His findings are presented in clear oral and written reports which he provides to judges and juries in non-technical language.

    Areas of Expertise:
    • Metallurgy
    • Laboratory Testing and Interpretation
    • Corrosion Analysis & Control Methods
    • Mechanical Design Analysis
    View Consulting Profile.
    Many considerations are included in a valid engineering design process. Typically decisions that provide for safe service and expected reliability in the given component or structure are the most critical. Determining the numerical value of an appropriate safety factor (or factor of safety) during design is vital to achieving mechanical or structural integrity.

    11/16/2015 · Corrosion
    A common cause of failures in various types of equipment is fatigue failure of bolts that secure parts together. Fatigue in any type of dynamically loaded mechanical component accounts for more than 80% of all failures. This post reviews some important factors in fatigue failure of metallic bolts.

    The working relationship between the attorney and their expert witness in a case can be more effective if a few simple guidelines are followed. These are common sense things but one or more can be overlooked in the frequent day-to-day rush that busy attorneys face. When that happens some of the potential contributions from the expert may be compromised or lost to the detriment of the attorney's client.

    6/30/2015 · Engineering
    Too frequently an attorney will begin to seek a potential expert witness only after having done considerable initial work. Often there is a last minute rush to locate and select specialized technical assistance. These approaches can have expensive consequences. Alternatively, securing a suitable expert early in the litigation process offers the following advantages for the retaining attorney:

    6/2/2015 · Engineering
    Many negative consequences can result from failures of a range of different products that often lead to property & casualty insurance disputes or product liability legal actions. The products may include consumer or industrial goods. Typically the private user or worker is injured or a business incurs significant financial loss. The injured individual, insurance carrier, attorney(s) or industrial manufacturer and user are all interested to confirm what went wrong – and who is liable. Resolution often depends on engineering analysis.

    5/7/2015 · Corrosion
    Clearly it is advantageous to know when corrosion is occurring in operating equipment to avoid future failure. There is extensive literature on this topic. This post is a brief summary of information selected from the four references cited below. Each source includes several other references.

    4/7/2015 · Manufacturing
    "3D printing" or the more descriptive term - additive manufacturing (AM) - has received much publicity in recent years. What is this technology and what are some of its practical features? This blog is a summary of AM and its on-going development to make actual service components using metal alloys. Presented are selected portions of information provided in the two references cited.

    3/3/2015 · Corrosion
    Most engineers know about the danger of galvanic corrosion caused by physical contact between dissimilar metals exposed to a corrosive liquid. However, this possibility is often overlooked and other features of this type of corrosion may not be widely known.

    1/21/2015 · Failure Analysis
    It is essential when beginning a root-cause failure analysis involving metallic materials to collect and maintain the as-found physical evidence properly prior to detailed examinations. This has two objectives. In all cases collecting and protecting the evidence in its undisturbed condition provides the best opportunity to derive meaningful good results from the subsequent analyses. Secondly, in a legal proceeding lack of attention to these matters can produce the accusation of spoilation of evidence. As a minimum this will cause presentation problems for the offending party in the suit. At worst such deficiencies by that party may cause the case to be thrown out.

    12/12/2014 · Corrosion
    Aluminum alloy materials are well known for their light weight and strength-to-weight ratios. They are also susceptible to several forms of corrosion. Relative to other metals, their natural electrochemical potential places them adjacent to other very susceptible (active) metals such as magnesium (Mg) and zinc (Zn) in a traditional galvanic series in seawater. However, Al alloys naturally form a very thin, protective (passive) oxide film on their surface when exposed to oxygen. This film prevents corrosion as long as it is maintained over the surface. Pitting corrosion is a common form of attack on aluminum. This is typically caused by exposure to halide ions, chloride ions being the most common type found in corrosive media, that breakdown the passive film at discreet spots. This permits pits to initiate and grow.

    11/7/2014 · Metallurgy
    Often when engineers consider mechanical fatigue they envision cyclic, reversing stresses in a spinning shaft or possibly the up and down flex of aircraft wings. Rolling contact fatigue (RCF) or the associated mechanical wear is an important, closely related process to the traditional mechanism of fatigue but with distinct differences. RCF is also often known as spalling.

    9/25/2014 · Product Liability
    This term raises some vital issues that the engineer should be aware of when using it. First several definitions are available and thus it is perceived differently by different groups and individuals. From a legal standpoint, in many states, using the term to describe a product that was involved in an incident involving an injury means that the designer or manufacturer of that product may be financially liable for the injury. Engineers sometimes use the term simply to indicate an imperfection in a product without intending its frequent legal use. Further the engineer realizes that no material and no finished product is perfect. However, these variations from perfection do not necessarily mean they were cause for failure and thus the injury that may occur in a given incident. Some product liability attorneys may not readily acknowledge or understand this distinction.

    8/21/2014 · Corrosion
    The optimal time to make decisions and take actions to minimize potential failures of equipment, facilities and components is during their design. This two-part blog post provides an overview of the types of issues involved and specific actions that can be useful to the design engineer. Archived blog posts (at that discuss specifics are provided parenthetically.

    7/15/2014 · Metallurgy
    Four, tri-lobe pumps were damaged and required extensive repair during the latter stages of construction for a modification in a pharmaceutical manufacturing plant. The economic loss was significant and the general contractor for the work paid the plant's owner for the loss. The renovated units were installed and are in use. However, the general contractor then sued one of its subcontractors - a welding contractor that fabricated and completed weld joints between piping sections on the inlet side of the pumps. The general contractor claimed poor quality welds in the piping permitted loosened weld fragments to enter the pumps during the required water flow verification of the system and this caused the damage.

    6/9/2014 · Corrosion
    Most realize that damage due to corrosion of metals is costly - but what specifically is that cost and what is included in the total? A study completed in 2002 sponsored by the Federal Highway Administration (FHWA), the National Association of Corrosion Engineers (NACE International) and implemented by CC Technologies Laboratories (now part of DVN) addressed those questions.

    5/2/2014 · Corrosion
    Material selection entails picking an engineering material - either metal alloy or non-metal - that is inherently resistant to the particular corrosive environment and also meets other criteria. Variables that will affect corrosion are established along with materials that may provide suitable resistance for those conditions. Obviously other requirements such as cost and mechanical properties of the potential materials must be considered.

    3/28/2014 · Corrosion
    Pin-hole leaks from a fire-control sprinkler piping system just above the false ceiling of multiple rooms in an office building resulted in a suit against three parties involved with supplying the system. The plaintiff - a financial service organization that owned the building - had much computerized transaction data stored on magnetic tapes in several rooms damaged or destroyed by the incident. The monetary loss was major. The leaks occurred within two years after the system was installed. This period is clearly far short of the expected life of the system. Defendants in the case included the supplier of the piping used in the system, the engineering firm that designed it and the installation contractor.

    2/26/2014 · Corrosion
    A variety of low-voltage electronic devices may fail to operate properly because of exposure to certain corrosive, gaseous environments. Susceptible items include consumer products such as microwave ovens, audio equipment, TV's and personal computers as well as many types of industrial sensors and automatic control devices. Failure generally occurs because of specific application factors. These include the severity of the environment, the presence or absence of atmospheric sealing of components within the device and the metals used at critical internal locations. Frequently complete failure doesn't occur but normal operation is erratic.

    A full size, cylindrical tank trailer pulled by a truck tractor/ cab split open on its lower section at mid-span and released hundreds of gallons of hydrochloric acid (HCl) onto a secondary highway in a northeastern state. When this occurred the truck driver jumped out of the truck's cab and sustained acid burns to his ankles because he was wearing low-quarter shoes.

    12/20/2013 · Failure Analysis
    A severe personal injury incident occurred as a recreational fishing boat was approaching a dock at approximately 20 mph after a day on the water. The large outboard engine (75 HP) on the stern of the boat struck a fixed underwater obstruction, flipped into the boat while still running and amputated the hand of a passenger seated near the engine.

    11/26/2013 · Engineering
    A licensed professional engineer (P.E.) is required to adhere to a Code of Ethics for Engineers in all work he undertakes. However, there are some special criteria when employed as an expert witness.

    Check for SynapsUs
    James R. Drebelbis, AIA, PE
    2909 Cole Ave
    Suite 100
    Dallas TX 75204
    phone: 214-468-8118
    Drebelbis Engineering is an Architectural and Engineering firm specializing in Forensic Engineering. Their combined background in architecture, engineering, and business make Drebelbis Engineering uniquely qualified to address the complexities found in forensic engineering assignments.

    A Dallas-based company founded in 1996, their focus is structural, architectural and civil engineering as applied to buildings and site systems. They bring technical engineering knowledge, testimony, and remedy when construction fails to perform and when construction processes derail.

    Principal, James R. Drebelbis, AIA, PE, is an Architect and Structural Engineer with over 40 years of experience in all phases of building construction and performance, project management, and producing documents for building construction (drawings, specifications, change orders).

    Litigation Support - Mr. Drebelbis specializes in Forensic Engineering for attorneys and insurance companies. His understanding of building types and construction systems includes site construction and earth retaining structures as well as residential, commercial, manufacturing, and institutional buildings.

    Mr. Drebelbis is retained for Cause and Origin of Structural Failures and disputes about construction performance that often emphasize the obvious (leaks, cracks, collapses). His expertise is available to attorneys representing both Plaintiff and Defendant. Services include engineering investigation, documentation, testimony, and preparation of Certificates of Merit.

    Education/Licenses: - BS Arch. Engineering, MBA, Professional Engineer (Texas, Alabama, Kansas, Oklahoma, Louisiana, New Mexico), Architect (Texas)

    Areas of Technical Experience and Expertise:
    • Construction Technology
    • Building Codes
    • Forensic Engineering
    • Fire, Weather, Disaster Related Damage
    • Roofing & Waterproofing Systems
    • Water and Moisture Intrusion
    • Stair Construction
    • Performance of Building Materials
    • Retaining Structures
    • Application of Building Materials
  • Selection of Building Materials
  • Structural Engineering
  • Site and Building Drainage
  • Foundation Design
  • Soil Behavior
  • Concrete Workmanship and Design
  • Contract Documents
  • Professional Ethics
  • Slip, Trip, Fall
  • Corrective Construction
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