Forensic Engineering Expert Witnesses

William 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

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.

Acorn Consulting Services

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

Expert in Boilers, Piping, Explosions including Water Hammer.  Visit www.ais-forensic-engineering.com and www.accidents-inspections.com for a fuller description of capabilities.

Dr. 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.

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.

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.

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. 

Brosz & Associates 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 allow 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. 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

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.

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.

Jose J. Granda, PhD, PE, is a Professor of Mechanical Engineering at the California State University in Sacramento, CA. Prof. Granda is a Professional Registered Mechanical Engineer with almost 40 years of experience in the industry. A NASA Fellow, he served as a NASA public spokesman for 17 space shuttle missions.

Degrees and License:

• PhD in Mechanical Engineering, University of California, Davis
• ME in Mechanical Engineering, University of California, Berkeley
• MS in Mechanical Engineering,  National Polytechnic University, Ecuador
• PE (Professional Engineer) License in Mechanical Engineering

Specialized Training: Vehicle Dynamics and Design, Vehicle Safety and Crash Reconstruction, Accident Bio-mechanics, Finite Element Modeling in Computer Aided Design, Advanced Mechanical Design and Failure Analysis, CSUS;  Motorcycle Accident reconstruction;  EDR Certification, Tech 1, Tech II,  EDR Analysis Certification, Collision Safety Institute;  Applying Automotive EDR Data to Traffic Crash Reconstruction, SAE Society of Automotive Engineers International;  Advanced Accident Reconstruction Utilizing Human Factors course; Photogrammetry for Collision Reconstruction, Lightpoint Data; Bicycle and Pedestrian Accident Reconstructions; Heavy Commercial Vehicles Accident Reconstruction

Litigation Support - Prof. Granda is an expert in Forensic Engineering and Accident Reconstruction using computer simulations. His cases include accidents involving vehicles and people. He offers services to attorneys for plaintiff and defendant which include thorough written reports, depositions, and trial experience.

Areas of Expertise:

Automotive Accidents Truck Accidents Bus Accidents Motorcycle Accidents Biomechanics Occupational / Workplace / Industrial Accidents Finite Element Modeling and Failure Analysis

EDR (Event Data Recorder) Analysis Speed Studies Patent Infringement Slip and Fall Visibility Fitness Equipment Cranes / Hoists / Lifts

 View Prof. Granda's Consulting Profile.

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.

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

Paul Eason is a Licensed Engineer, Nationally Certified Fire & Explosion Investigator and Forensic Consultant. His expertise comes from a strong background in industry and academia. In addition to his consulting practice, he is a professor in the Mechanical Engineering program at the University of North Florida, and maintains a graduate faculty appointment in the Materials Science and Engineering Program at the University of Florida.

Dr. Eason has testified in numerous trials and depositions in the following practice areas: Product Design & Manufacturing Analysis, Metallurgy & Materials, Fire & Explosions and Industrial Accidents

Areas of Expertise:

Product liability and failure analysis, Product Defect & Safety Issues including: Metals, Plastics, Glass, Ceramics, Corrosion, Fatigue, Overload & Material Selection

Fire and Explosion analysis including: cause and origin determination, product related fire causation, industrial process accidents, dust explosions, welding/brazing accidents

James Parker has over 35 years of relevant industry experience specializing in Electronic Security Systems & Sensors, Electronics R&D, and New Product Development. He has in-depth knowledge of electronic product design in both Wired and Wireless Technologies and outstanding knowledge of Environmental and False Alarm Immunity. Products, such as alarm systems, that Mr. Parker led the design of, have an installed base in the millions. 

Litigation Support - Mr. Parker provides Patent Litigation support to counsel representing both Plaintiff and Defense and is experienced with civil liability, criminal and patent litigation, including Inter Partes Reviews (IPRs). He has the ability to explain complex technical material in a straight forward manner. Mr. Parker's past clients include Cravath, Swaine & Moore LLP, Weil, Gotshal & Manges LLP, Fish & Richardson PC, Alarm.com, 2GIG Technologies, and Nest Labs. His services are available nationally and internationally. 

Areas of Expertise:

Electronic Security Security Systems Burglar Alarm Systems Intrusion Detection Motion Detection Wireless Alarm Systems Wired Alarm Systems Occupancy Detection Systems Premises Security Residential and Commercial Security Inter Partes Reviews (IPRs)

Research and Development Engineering Management New Product Development Electronic Engineering Embedded Systems Alarm Control Panels PIR (Passive Infra-Red) Motion Detection uW (Microwave) Doppler Motion Detection Solar LED Flood Lights (Patio to Street Level) Patent Litigation Intellectual Property

Background - Mr. Parker is the Past Vice President of Engineering for Digital Security Controls Ltd. (DSC), a leading global manufacturer of electronic security systems and components with sales exceeding $400 million annually. He is currently the President at EE-Systems Group Inc. Canada (R&D) where he is responsible for overseeing new product and business development. A prolific inventor, Mr. Parker has been granted over 25 unique patents with approximately 100 patent documents published worldwide. 

View James Parker's Consulting Profile.

Envista Forensics is a global leader in Forensic Engineering & Recovery Solutions. They provide Cause & Origin, Failure Analysis, Fire and Explosion Investigations, Accident Reconstruction, Damage Evaluations and Equipment Restoration Services following disasters of all kinds. Envista has offered Consulting Services to the insurance, legal and risk management industries, as well as businesses, public entities, and universities for over 25 years. Their Experts travel globally from 30 offices located across the U.S., Canada, Mexico, the U.K., Australia and Singapore.

Envista's experience counts when equipment, systems, structures, or data have been threatened by catastrophe or litigation. Their experts and advisors determine cause and responsibility, and identify the nature and extent of damage or loss and provide a full range of solutions to protect their assets. Envista's technical professionals are trusted advisors and industry leaders. Their expertise is broad and deep, capable of withstanding all forms of scrutiny. Envista's services are available globally so that certainty is assured no matter where in the world it is needed. As the recovery from disasters has grown more complex, Envista has developed a comprehensive array of services to help their clients and has associates located around the globe to provide assurance no matter the type of loss or location of the disaster.

Envista helps attorneys quickly get to meaningful answers on the many technical issues at the center of a dispute. Their engineers have decades of experience working with both defendants and plaintiffs. They offer effective Expert Witness Testimony, with the ability to communicate effectively, build rapport with juries and judges, and maintain adherence to structured, methodical approaches in drawing conclusions are all extremely critical. Envista Forensics understands how critical the selection of an expert can be, and we understand what makes experts effective. Their court qualified experts have extensive experience providing expert testimony on a wide variety of engineering and technical matters.

Areas of Expertise:

Aviation & Aerospace Biomechanics Construction Defects Digital Forensics Electrical Injury & Electrocutions Causation Chemical Computer / Network Equipment Failure Construction Defect Disputes over Reparability of Damage Electrical Failure Equipment Restoration Fire & Explosion Analysis Equipment Restoration

Industrial / Manufacturing Equipment Materials Failure Mechanical Accidents Mechanical Failure Medical / Laboratory Equipment Product Failure / Liability Project Management Structural Failure Subrogation Utility & Energy Valuation of Structures or Equipment Vehicle Accident Investigation Workplace / Premises Accidents

View Envista's Consulting Profile.

John A. Williams, PhD, MBA, PE, has led EPS, a full-service Engineering firm, for over 23 years, delivering engineering, procurement, and construction management services (EPCM).

Background - Dr. Williams' operations experience began in 1977 as a USW union equipment operator and his engineering experience has ranged from manufacturing operations, detailed design, failure analysis, cost estimating and finance, and construction. He has instructed project management, cost estimating, financial evaluation methods for the American Institute of Chemical Engineers and American Society of Mechanical Engineers since 1996. He has authored and presented across technical topics and has received awards for his distinguished engineering work.

Litigation Support - Dr. Williams provides expert witness services to attorneys representing plaintiff and defendant. Recent Expert and Litigation Support services have included technology investigations, assessments, licensing and dispute resolution; forensic investigation of explosions, fires, and equipment failures; valuation and appraisals in ad valorem taxation, depreciation, obsolescence, and determination of fair market value, liquidated, and business interruption damages.

Dr. Williams performs forensic investigations, technology assessments, and financial valuation services on the following:

Explosions Fires Industrial Accidents Oil & Gas Production Equipment Oil Refining Failures Chemicals Plastics Steel Making

Biofuels Cellulose / Cellulosics Gasification / Wind Glass Making Power Generation (boilers, steam, turbines, etc. Energy Systems (gas, oil, coal, renewables) Biotechnology (citric acid, succinic acid, enzymes, etc. Renewable Energy Facilities

Brandon W. Erickson, PE, SE, principal of Erickson Structural Consulting Engineers, PC, has over 22 years of experience in Structural Engineering. Mr. Erickson received his B.S. in Civil Engineering from Brigham Young University and his M.S. in Structural Engineering from Stanford University. Mr. Erickson is licensed in Washington, Oregon, Hawaii, California, Idaho, Utah, Alaska, Montana, Arizona and Nevada. Mr. Erickson's main office is located in the Portland, Oregon metro area. Mr. Erickson also maintains a satellite office in Kihei, Hawaii, from which he provides services throughout the state of Hawaii. Litigation Support - Mr. Erickson provides litigation support services relevant to the structural design, construction, performance, failure, and remediation of buildings and similar structures. He is familiar with a variety of structural construction materials, including steel, concrete, wood, and masonry. His practice includes building structures and their foundations, remediation repair designs, construction means and methods, and seismic evaluations and upgrades. Retained as an expert for both Plaintiff and Defense, Mr. Erickson's services include comprehensive expert investigations, research, and forensic testing and analysis. His findings are summarized in well-documented, clear, and defendable reports. Mr. Erickson assists with mediation or arbitration, and provides expert testimony at deposition, mediation, or in court. Forensic Investigation Services:

• Perform Proximate Cause Investigations
• Assess Construction Defects
• Assess Design Errors
• Assess Materials Defects
• Develop Testing and Monitoring Systems
• Review Design and Construction Documents
• Determine Extent of Damage
• Prepare Schematic Remediation Designs Suitable for Scoping and Pricing
• Prepare Final Remediation Designs Suitable for Permitting, Bidding, and Construction
• Provide Assistance During the Remediation Phase

View Brandon Erickson's Consulting Profile.