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Forensic Engineering Consultants

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William Acorn, P.E., FASHRAE
Principal
10617 N Hayden Rd, Suite B-108
Scottsdale AZ 85260
USA
phone: (602) 888-7250
fax: 520-577-0851
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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, Utah and Washington.
  • 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
    President
    PO Box 133
    Lafayette Hill PA 19444
    USA
    phone: 609-502-0900
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    Adler Engineers, Inc.was established on June 14, 1990 as a Civil / Geotechnical Engineering and Environmental Consulting firm to provide quality services for public and private clients in a highly competitive environment. Adler performs Site, Civil, Structural and Geotechnical Engineering tasks as well as Environmental Consulting, Expert Witness, and Forensic Engineering services including:
    • Civil Engineering / Surveying / Landscape Architecture
    • Environmental Consulting / Cultural Resource Management
    • Construction Engineering / Field Services
    • Sustainable Design
    • Threat and Security Assessments
    • Telecommunications Design and Engineering
    Julian M. Toneatto, PhD, PE, PP, President of Adler Engineers, Inc., 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.

    View Dr. Toneatto's Expert Witness Profile.
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    Tarek Omar, PhD
    Owner / President
    8360 Greensboro Dr., Suite 924
    McLean VA 22102
    USA
    phone: 703-544-8948
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    ART Corp. experts have more than 22 years of advanced expertise in the areas of accident/collision investigation, highway safety, automotive/vehicular engineering, security barriers and structural analysis. Their superior expertise is guaranteed to provide you with the compelling evidences necessary to pursue and win complex specialty lawsuits including but not limited to accident reconstruction, airbag and seatbelt fatalities/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 have conducted a wide variety of successful projects and accident reconstruction analysis for many government agencies, private industry, and engineering and law firms.

    Professional in utilizing state-of-the-art technology including 3-D computer animation engineering and modeling and the latest engineering techniques for crash analysis (frontal, side-impact, incompatibility, single 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, human factors, vehicle dynamics and computerized crash simulations.

    View Dr. Omar's Expert Witness Profile.
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    Jason Young, BESc., MASc, PEng
    2770 Dufferin Street, Suite 207
    Toronto ON M6B 3R7
    Canada
    phone: 416-630-0700
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    Advantage Forensics Inc. is a multi-disciplinary forensic engineering firm based in Ontario with service across Canada and the U.S. Their team of over 25 experts and senior consultants are ready to assist you with your specialty consulting needs in the following areas:
    • Expert Witness Services
    • Road Lighting Safety Assessment
    • Road Signage Assessment
    • Traffic Safety Assessment
    • Collision Data Recorder Download & Analysis
    • Floor Safety, Friction Testing & Audits
    • Safety Hazard Assessment
    • Playground Safety Inspection & Compliance
    • Fraud Investigation
    • Product Safety Testing & Compliance
    • Product Warning Assessment
    • Fire Safety Assessment & Audits
    President, Jason Young, BESc., MASc, PEng, is a licensed professional engineer with over 16 years of experience in Mechanical / Biomechanical engineering forensics and safety testing. Mr. Young has a Masters in Biomedical Engineering, is a Certified Playground Inspector and Certified Level 2 Zipline & Challenge Course Inspector, and is an active member of CATAIR, HFES, and ASTM with numerous research publications and contributions to current standards. Mr. Young has taught numerous courses on Collision Reconstruction, Human Factors and Biomechanics to academia and is a sought-out expert panelist and guest speaker in those fields.

    Their senior consultants in road safety, traffic safety, fire safety and product safety are among the top experts in their respective fields in North America and are well-known for their outstanding service, keen attention to detail, and professional results. They offer reasonable hourly rates for consulting services or guaranteed fixed quote rates, depending on your preference. Visit their website at www.aforensics.ca/ for more information regarding consulting services and experts, or call to discuss your specific needs.

    View Jason Young's Expert Witness Profile.
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    Roland O’Brien-Bills, PE, MSc
    Mechanical & Safety Engineer
    212 Elmwood Ave. Ext.
    Gloversville NY 12078
    USA
    phone: 518-675-0077
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    Expert in Fire Tube Boilers, Water Tube Boilers, which include - Steam, Hot Water, HTHW, Condensate -, Piping, and Furnace & Vapor Explosions and Steam Condensate Explosions as well as Steam Condensate Water Hammer.  Visit www.ais-forensic-engineering.com and www.accidents-inspections.com for a fuller description of capabilities.

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    Adam K. Aleksander, PhD, PE, CSP
    Principal
    PO BOX 140558
    Boise ID 83714
    USA
    phone: 208-321-0200
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    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. His consulting services include industrial projects related to utility and heavy industrial plant events, equipment failures, combustion, STG, chlorine, and material handling systems. Principal at ALEKSANDER & Associates and VP of an Energy Services firm, 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.

    Dr. Aleksander has performed extensive research in his field of expertise. The author of numerous publications on Mechanical Engineering, Human Factors, and Safety Engineering, he has delivered lectures and presented seminars to such entities as the American Academy of Forensic Sciences, the International Academy of Forensic Sciences, and the National Academy of Forensic Engineers.

    ALEKSANDER & Associates Services Include:

    Investigative Engineering
    • Accident / Incident Investigation
    • Accident, Loss, & Exposure Evaluations
    • Environmental Permitting & Reclamation
    • Product Liability
    • Risk Management & Safety
    Preventive Engineering
    • Accident / Incident Investigations
    • Human - Machine Interaction & Ergonomics
    • Research & Investigations
    • RMP & PSM
    • Work Site Evaluation
    Safety / Ergonomics
    • Industrial Ergonomics
    • Risk Management, PSM, Loss Control
    • Accident, Loss, & Exposure Evaluations
    Consulting Engineering
    • Engineering Design & Analysis
    • OSHA & Regulatory Issues
    • Industrial Forensics
    View Dr. Aleksander's Expert Witness Profile.
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    Allied Glass Experts, LLC
    Henry (Hank) H. Chamberlain
    Chairman and President
    5000 State Ave.
    Kansas City KS 66102
    USA
    phone: 913-287-9200
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    Allied Glass Experts, LLC (AGE) is an international consulting, engineering, and research group with practice limited to Glass and Glazing issues. A Kansas corporation, AGE associates include numerous internationally recognized experts in diverse areas of the glass industry. Together, they can often provide the optimum mix of expertise to resolve technical issues involving glass and glazing systems.

    AGE projects commonly involve architectural, industrial, or automotive applications. Design, forensic, research, engineering, testing, and consulting services are available.

    Services Include:
    • Design & Testing
    • Failure Analysis
    • Fractography
    • Finite Element Analysis (FEA)
  • Optics
  • Energy Efficiency
  • Process Control
  • Forensics
  • Henry Chamberlain, Chairman, has 50 years of experience in the Glass Industry. His expertise includes design, manufacturing, testing, quality control, and failure analysis. He has a breadth of experience from automotive, commercial, architectural, and consumer product applications.

    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 glass industry publications and given lectures and presentations on glass.

    View Henry Chamberlain's Expert Witness 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
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    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
    USA
    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
    GBR
    phone: +442084012873
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    Geoffrey Beresford Hartwell is a Chartered Consulting 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.

    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
  • Consulting Services Include:
    • Arbitration - Geoffrey Hartwell 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 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
    Background: 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.

    Selected Projects:
    • UK Maritime - Roll-On Roll-Off: At Yarmouth in the Isle of Wight, Geoffrey designed an hydraulically-operated vehicle ramp to engage with ferries at all states of the tide. Remote radio control enables the ramp to be trimmed by the approaching vessel. The project included car marshalling and adjustable area lighting
    • Modernization of The Tower Bridge, London - In 1974 BHA were appointed by Cleveland Bridge and Engineering Co Ltd to design and manage the modernization of the machinery of The Tower Bridge. The project included new electro-hydraulic pumps, hydraulic motors and drive gears
    • Ipswich - Central Control for Water Supply Network: The entire system of pumping stations, treatment works and distribution had new instrumentation and control connected by radio and landline telemetry to a central base station. Geoffrey designed and managed the entire scheme with a dedicated design team
    View Geoffrey Beresford Hartwell's Expert Witness 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
    CAN
    phone: 905-472-6660
    fax: 905-472-6665
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    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
    USA
    phone: 217-687-2000
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    Burtness Engineering Services, is a multi-disciplined consulting engineering firm serving municipal, institutional, industrial, and commercial end user clients, civil engineering firms, and landscape architectural firms with MEP services for the construction industry. They specialize in Street and Area Lighting Design, Electrical Engineering, and Forensic Engineering services.

    Consulting Services Include:
    • Illumination Engineering for Roadway, Street, and Area Lighting
    • Electrical Engineering (Through 15kv)
    • Monitoring and Control Systems for Street and Area Lighting
    • Full Range of MEP Services
    • Industrial Instrumentation and Control Systems
    • Stakeholder Based Collaborative Design Philosophy
    • Focusing on the Marriage of the Art of Aesthetic Design and the Science of Technical Engineering
    • Serving as a Prime or a Sub Consultant
    • Forensic Consulting and Expert Witness Services
    Thomas Burtness Electrical Engineering Expert PhotoPrincipal, Thomas 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.

    Thomas Burtness has written numerous in-depth reports, including municipal master planning documents, as well as operation, maintenance, and testing manuals. He also has extensive experience in public speaking and teaching.

    View Thomas Burtness' Expert Witness Profile.
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    Curt M. Freedman, PE, CEM, CEA, LEED AP
    24 Ridge Road
    Longmeadow MA 01106
    USA
    phone: 413-567-1175
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    Curt Freedman Forensic Engineering Expert PhotoCurt M. Freedman, PE, CEM, CEA, LEED AP, has over 30 years of experience as a Mechanical Engineer. With a Masters in Engineering Management, he provides professional engineering consultation services for the residential, commercial, and industrial sector.

    Mr. Freedman evaluates building mechanical and structural infrastructure. His experience includes the design, engineering, and construction of HVAC systems, boilers and chillers, plumbing systems, and utility conservation products for the residential, commercial, and industrial sector. He is registered to practice in Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, and Maryland.

    Since 2006, Mr. Freedman has been an adjunct professor at Western New England College in Springfield, MA where he teaches materials science laboratory, energy management, and alternative energy sources. In 2010, he became the first professor to successfully include the Certified Energy Manager (CEM) Exam as part of an engineering classroom as sponsored by the Association of Energy Engineers (AEE). Mr. Freedman is an advocate for utility conservation and more equitable electric natural gas, water, and sewer tariffs.

    Engineering Design Expertise:
    • Artesian Well Design
    • Code Compliance Evaluations
    • Controls Systems
    • Electric / Natural Gas Conversions
    • Commercial Property Reserve Funding
    • Flat Plate Solar Panels
    • Energy Conservation
    • Forensic Engineering Evaluations
    • Furnaces
    • Gray Water Heat Recovery
    • HVAC Design
    • Hydronic Boilers
  • Mechanical System Troubleshooting
  • Natatorium HVAC Design / Energy Conservation
  • Photo-voltaic Solar Panels
  • Property Assessments
  • Real Estate Closing Inspections
  • Refrigeration System Efficiency Measures
  • Renewable Energy systems
  • Restaurant Energy Conservation
  • Rooftop HVAC Equipment
  • Steam Boilers
  • Utility Rate Audits
  • Water Conservation
  • View Curt Freedman's Expert Witness Profile.
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    Harry G. Direen, PhD, PE
    Colorado Springs CO 80921
    USA
    phone: 877-869-5201
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    DireenTech is a Design and Systems Development firm in the Electronics and Software Industry. They are currently under contract with the US Air Force Academy Center for UAS Research, Department of Electrical and Computer Engineering in the area of using General Purpose Graphics Processing Units (GPGPU) in UAVs / Drones to provide fast autonomous target identification and GPS denied navigation.

    DireenTech has also partnered with FalconWorks and Falci Adaptive Motor sports on the NeuroGroove program to develop technologies to help those with neuromotor disabilities, including U.S. veterans, increase their ability to control and interact with their environment.

    Core Services
    • Software Design and Development
    • Electronic Hardware Design and Development
    • Research using GPGPUs for Control, Navigation and Image Processing
    • Intellectual Property
    • Reverse Engineering Hardware, Software, and Firmware
    • Product Forensics
    Chief Operating officer, 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.

    Dr. Direen has a broad base of knowledge in electronic and software systems gained from a long career developing a wide range of products and systems. He 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. Dr. Direen has successfully discovered and analyzed complex digital signal processing algorithms and pertinent operations within these products for many years.

    View Dr. Direen's Expert Witness Profile.
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    Gerald O. Davis, PE
    President & Co-Owner
    4723 Squaw Valley Court
    Glen Allen, VA
    23060
    VA, DC, MD, WV, NC USA
    phone: 804-967-9129
    fax: 804-967-9130
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    Gerald O. Davis, PE, President and co-owner of DM&ME, has over 40 years experience in Metallic materials Usage, Corrosion, Metallurgy, Mechanical Failure, & 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, for DM&ME as an independent consultant. For (7) years he served as a mechanical engineer and maintenance/reliability engineer in a continuously operating chemical processing plant.

    Mr. Davis provides services to a variety of industrial clients who desire outside help in his knowledge areas. Clients include those interested in targeted materials selection, prevention of equipment failure, or on-site short-course training for materials matters. Located in Central Virginia, he provides services across the nation.

    Consulting Services Include:
    • Metallurgical Root-Cause Failure Analysis and Consulting
    • Metallic Materials Selection & Design Reviews
    • Corrosion Analysis and Control
    • Mechanical Failure Analysis
    • Customized On-Site Materials Training
    View Expert Witness Profile.
    5/30/2018 · Metallurgy
    Sometimes the physical properties of hardness and hardenability are confused. Hardness represents an existing condition after processing by heat treatment. It is a direct indicator of the mechanical strength of the steel. Hardenability denotes the potential of a steel to develop a particular value of hardness after a particular heat treatment. Hardenability is primarily dependent on the chemical composition of the steel. Hardenability is associated with a steel's ability to develop hardness to a given desired depth in thickness of the finished product. Developing high hardness throughout thick cross sections is usually more difficult to attain without adding expensive elements (compared to carbon) to the composition.

    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 www.dmme-engineering.com) 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.

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