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Showing 217–234 of 371 experts

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Engineering

JH

John H. Hatcher

Senior Principal

Stafford, TX40+ years+ yrs★ 7.9

John H. Hatcher, MBA, PE, BCxP, CPP, LEED AP, WIRED SCORE AP, SMARTSCORE AP is an engineering and security expert specializing in HVAC building automation systems and physical security. With a career spanning consulting in HVAC controls, risk analysis, and intelligent building systems, he brings a comprehensive framework to litigation work. His work centers on investigating system failures, assessing security vulnerabilities, and evaluating whether industry standards have been met. Mr. Hatcher has been retained in numerous expert witness and consulting engagements across the United States, involving complex engineering disputes, security system failures, and building automation cases. His Bachelor of Science in Mechanical Engineering, along with certifications such as Certified Protection Professional (CPP) and Building Commissioning Professional (BCxP), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving HVAC systems, security protocols, and building automation technologies.

SecurityHVAC building automation systemsPhysical security+2

Engineering and Construction

CK

Craig Koehn

Principal

Houston, Texas30+ years+ yrs★ 7.9

Craig Koehn, P.E. is an engineering and construction expert specializing in mechanical, electrical, and fire protection systems investigations. With a career spanning engineering design, fire investigations, and forensic engineering, he brings a multidisciplinary approach to analyzing complex engineering failures and compliance issues. His work centers on investigating mechanical equipment failures, assessing fire protection systems, and evaluating whether construction practices adhere to industry standards. Mr. Koehn has been retained in numerous expert witness and consulting engagements across Texas and beyond, involving fire investigations, vehicular accident reconstructions, and environmental investigations. His M.S. in Industrial Engineering, along with his certification as a Certified Fire Investigator by Peter Vallas Associates, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving fire protection systems and mechanical failures.

Vehicular Black Box and Air Bag InvestigationsHuman Factors Aspects of InvestigationMold Origin and Cause Testing and Investigation+19

Oil and Gas

NC

Nick Cleveland

Independent Petroleum Consultant, Sr. Drilling Engineer/Project Manager

Fort Worth, TX20+ years+ yrs★ 7.9

Nick Cleveland is a petroleum engineering expert specializing in drilling, completions, and production across major U.S. basins. With a career spanning well design, horizontal and directional drilling, and AFE preparation, he brings a strategic operational framework to litigation work. His work centers on investigating wellbore construction, assessing drilling efficiencies, and evaluating whether operational standards were met. Mr. Cleveland has been retained in numerous expert witness and consulting engagements across the United States, involving oil and gas drilling operations and well design disputes. His B.S. in Engineering Technology from Texas A&M University, along with his Well Control Certification, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving drilling operations and wellbore integrity.

Petroleum EngineeringWell Design & EngineeringHorizontal & Directional Drilling+6

Construction

WM

Walter McBrier, P.E.

Licensed Professional Engineer | Construction Expert Witness | Principal Expert, GCM Group LLC

Boise, Idaho20+ years+ yrs★ 7.9

Walter McBrier, P.E. is a construction expert specializing in forensic analysis, litigation support, and expert reports in complex construction disputes. With a career spanning roles as a Vice President of a General Contracting firm and a Licensed Professional Engineer, he brings a real-world operational framework to analyzing project delivery, schedule manipulation, and cost management. His work centers on investigating schedule delays, assessing cost forensics, and evaluating whether change order disputes align with industry standards. Mr. McBrier has been retained in numerous expert witness and consulting engagements across the United States, involving heavy civil, utilities, commercial, industrial, and specialty construction sectors. His Bachelor of Science in Mechanical Engineering from Montana State University, along with his Licensed Professional Engineer (Civil - Idaho) certification, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving construction delay, cost quantification, and contract interpretation.

Construction EngineeringConstruction Delay & Disruption AnalysisCost & Damages Quantification+10

Mechanical Engineering

VA

Victor Alan Werner

PE, P.Eng, PMP

Renton, Washington57 years+ yrs★ 7.9

Victor Alan Werner, PE, P.Eng, PMP is a mechanical engineering expert specializing in industrial process systems and equipment litigation. With a career spanning forensic analysis, industrial design, and energy modeling, he brings a robust technical framework to his litigation work. His work centers on investigating industrial process failures, assessing equipment design compliance, and evaluating whether operational deviations have occurred. Mr. Werner has been retained in numerous expert witness and consulting engagements across the United States and Canada, involving chemical process plants, pulp and paper mills, and food processing facilities. His BS in Mechanical Engineering from Oregon State University, along with his PMP certification, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving mechanical systems and processes.

Equipment & Machinery

Telecommunications

IJ

Istvan Jonyer, Ph.D.

Computer Scientist

Los Angeles, California22 years+ yrs★ 7.9

Istvan Jonyer, Ph.D. is a computer science and engineering expert specializing in intellectual property litigation, including patent infringement and trade secret misappropriation. With a career spanning artificial intelligence, networking, telecommunications, and consumer electronics, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating patent validity, assessing breach of contract claims, and evaluating whether technology implementations infringe on existing intellectual property. Dr. Jonyer has been retained in numerous expert witness and consulting engagements across the United States, involving cases with leading technology companies such as Google, Apple, and Netflix. His Ph.D. in Computer Science and Engineering, along with his MBA in Venture Capital and Entrepreneurship, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving complex technological systems.

Software EngineeringMachine LearningArtificial Intelligence+3

Electrical Engineering

JD

Jack D Matthews

Electrical Engineering/Energy Expert Witness

Acworth, Georgia33 years+ yrs★ 7.9

Jack D Matthews, BSEE, MBA is an electrical engineering and energy expert specializing in electrical accidents and utility damage claims. With a career spanning electrical engineering, energy systems, and protective relaying, he brings a comprehensive framework to litigation work involving complex electrical systems. His work centers on investigating electrical accidents, assessing NEC compliance, and evaluating whether equipment damage resulted from construction defects. Mr. Matthews has been retained in numerous expert witness and consulting engagements across the United States, involving utility damage claims, electrical accidents, and construction defects. His BSEE in Electrical Engineering, along with his MBA in Business Administration and status as a registered professional engineer in 25 states, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving electrical analysis and power quality investigation.

Energy

Workplace Safety: OSHA Compliance, Machine Guarding & Entanglements, Crane Accidents, Material Handling, Fork Lifts, and Conveyors.

JM

James M.L. Miller, PhD, MS, EIT

Emeritus Professor of Engineering

Ann Arbor, MI59 years+ yrs★ 7.8

James M. Miller, P.E., Ph.D. is a workplace safety and human factors engineering expert specializing in OSHA compliance, machine guarding, and accident reconstruction. With a career spanning safety management, regulatory compliance, and human factors engineering, he brings a comprehensive framework to litigation work involving safety standards and accident causation. His work centers on investigating OSHA compliance, assessing machine safety, and evaluating whether safety standards were met in industrial settings. Mr. Miller has been retained in numerous expert witness and consulting engagements across the United States, involving workplace safety, vehicle accidents, and consumer product safety. His Ph.D. in Industrial Engineering, along with his Professional Engineer registration in Ohio and Idaho, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving safety management and human factors engineering.

Vehicle Accidents: Car / Truck / Motorcycle / Commercial Vehicle Accident Reconstructions, Crash Data Retrievals (CDR Downloads / Black Box), and Pedestrian / Bicycle Accidents.Warnings & Instructions: Warning Labels & User Manual Designs, Product Label Designs, Compliance with US and Global Standards (ANSI Z535 and ISO Standards), Inadequate Warnings Analysis, Product Recall Information and Strategies, and Health & Chemical Hazard Warnings.Chemical Safety: MSDS / SDS Design, Review, and Analysis, including with respect to NEW OSHA HAZCOM 2012 and Globally Harmonized System (GHS), Chemical Product Warnings / Labels Compliance, Fire and Explosion Investigations, Toxic Tort Litigations (Asbestos, Lead, Benzene, Carbon Monoxide, Diacetyl, etc.), Chemical Exposures, Food Flavoring and Fragrance Hazards.+46

Corrosion and Material Testing

ZF

Zhicao Feng, Ph.D., P.E.

Senior Principal Engineer

★ 7.8

Zhicao Feng, Ph.D., P.E. is a pipeline integrity and corrosion control expert specializing in failure analysis and risk management. With a career encompassing advanced material characterization, non-destructive testing, and corrosion control methods, he brings a multidisciplinary approach to evaluating pipeline safety and reliability. His work centers on investigating pipeline failures, assessing corrosion risks, and evaluating whether protective measures meet industry standards. Mr. Feng has been retained in numerous expert witness and consulting engagements across the United States, involving pipeline integrity management, corrosion assessment, and material failure analysis. His PhD in Material Science & Engineering, along with certifications such as Cathodic Protection Level 4 and Senior Internal Corrosion Technologist, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving pipeline corrosion and integrity issues.

Coating EvaluationPipeline Integrity ManagementPipeline Risk Assessment+11

Forensic Engineering

JH

Joseph H. Dabrowski

Professional Engineer

★ 7.8

Mr. Dabrowski is a Professional Engineer with over 45 years of experience in the construction and construction-related industries. Of these, twenty years have been (part time) devoted to performing numerous forensic engineering assignments for insurance companies and sureties. Further, eight of them have been spent (part time) providing lump sum construction services to the federal government acting in the capacity of a General Contractor. As a construction expert I’ve provided construction litigation, commercial arbitration support, commercial mediation support and construction claims services for sureties and / or their attorneys for over thirty years (part time).

Mechanical EngineeringFailure AnalysisIndustrial Machinery+4

Construction

RL

Rosa Loloee

Construction Claims and Forensic Analysis Expert

San Diego, CA15 years+ yrs★ 7.8

Rosa Loloee, Registered Professional Engineer is a construction claims and forensic analysis expert specializing in construction claims and contract disputes. With a career encompassing construction engineering, forensic scheduling, and public infrastructure projects, she brings a comprehensive analytical framework to litigation work. Her work centers on investigating delay analysis, assessing cost escalation, and evaluating whether design errors and omissions have occurred. Ms. Loloee has been retained in numerous expert witness and consulting engagements across California, involving highway projects, design-build conflicts, and Caltrans claims. Her Bachelor of Science in Civil Engineering, along with her Registered Professional Engineer certification, reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving unforeseen condition claims and utility coordination disputes.

Construction Engineering

Construction Defects

SC

Scott Calkins, PE

Mechanical Eng. Construction Defect Expert Witness

Mesa, Arizona13 years+ yrs★ 7.8

Scott Calkins, PE is a Mechanical Engineering Construction Defect expert specializing in construction defect litigation. With a career encompassing HVAC systems, power and process piping, and compliance with hazardous occupancy standards, he brings a comprehensive technical framework to his litigation work. His work centers on investigating HVAC and refrigeration systems, assessing compliance with codes and standards, and evaluating whether the standard of care in design and construction was met. Mr. Calkins has been retained in numerous expert witness and consulting engagements across various industries, involving HVAC systems, plumbing systems, and cleanrooms for advanced technology industries. His BSME from Northern Arizona University, along with his Professional Mechanical Engineer certification and NCEES certification, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of standard of care in disputes involving mechanical engineering and construction defects.

Mechanical Engineering

Construction Defects

JB

Jason Bondurant, PE, RRC

Senior Engineer and Principal

West Palm Beach, Florida20 years+ yrs★ 7.8

Jason Bondurant, PE, RRC is a construction defects expert specializing in forensic investigations of building envelope failures. With a career spanning civil engineering, construction management, and quality assurance, he brings a comprehensive framework to litigation work involving complex construction issues. His work centers on investigating building envelope failures, assessing repair plans and specifications, and evaluating whether construction management practices meet industry standards. Mr. Bondurant has been retained in numerous expert witness and consulting engagements across the southeastern United States, involving construction defects and civil engineering cases. His Bachelor of Science in Civil Engineering from the University of Florida, along with his Registered Roof Consultant (RRC) certification, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving building envelope failures and construction defects.

Civil Engineering

Failure Analysis

D(

Donnavan (Don) Halimunanda

Senior Consultant

Atlanta, GA22 years+ yrs★ 7.8

Donnavan (Don) Halimunanda, M.S., B.S., P.E. is a failure analysis and mechanical engineering expert specializing in forensic engineering and product assessments. With a career spanning forensic engineering, product assessments, and mechanical failure investigations, he brings a comprehensive framework to litigation work involving complex engineering disputes. His work centers on investigating defects that result in injuries and fatalities, assessing heavy equipment performance issues, and evaluating whether corrosion or fatigue contributed to material failures. Mr. Halimunanda has been retained in numerous expert witness and consulting engagements across the southeastern United States, involving industrial accidents and product liability cases. His M.S. in Mechanical Engineering, along with his Professional Engineer licenses in Alabama, Georgia, Tennessee, North Carolina, and South Carolina, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving mechanical failures and engineering defects.

Mechanical Engineering

Plumbing

JC

John C. Petkovich

Construction Expert

Prescott, AZ39 years+ yrs★ 7.8

John C. Petkovich is a construction expert specializing in plumbing, excavating, and complex mechanical systems litigation. With a career spanning hands-on construction work, leadership roles, and strategic innovation, he brings a practical and entrepreneurial perspective to his litigation work. His work centers on investigating construction defects, assessing compliance with building codes, and evaluating whether industry standards were met in complex construction projects. Mr. Petkovich has been retained in numerous expert witness and consulting engagements across Arizona and Colorado, involving residential, commercial, and service-related disputes. His extensive experience in the construction industry, along with his contractor licenses in AZ and ID, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving high-pressure systems, underground infrastructure, and advanced plumbing installations.

ConstructionExcavatingBackfilling+20

Biomedical Engineering

DC

David C. Gross, PhD, PE

Expert Witness

West Lafayette, IN15 years+ yrs★ 7.8

David C. Gross, PhD, PE is a biomedical engineering expert specializing in intellectual property litigation. With a career encompassing medical devices, failure analysis, and regulatory compliance, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating product failures, assessing compliance with regulatory standards, and evaluating whether design defects contributed to adverse outcomes. Mr. Gross has been retained in numerous expert witness and consulting engagements across the United States, involving medical device failures, products liability, and intellectual property disputes. His PhD in Biomedical Engineering, along with his status as a Licensed Professional Engineer, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving medical devices and related technologies.

Intellectual Property

Engineering

WR

William R. Acorn

Principal and Founder

Mesa, AZ40+ years+ yrs★ 7.8

William R. Acorn, PE, DFE, FASHRAE, CFLC is a consulting mechanical engineer expert specializing in the built environment. With a career encompassing project management, forensic analysis, and code compliance, he brings a multifaceted perspective to litigation work. His work centers on investigating mechanical system failures, assessing code compliance, and evaluating whether design deviations contributed to operational issues. Mr. Acorn has been retained in numerous expert witness and consulting engagements both domestically and internationally, involving complex project design, construction, and operational issues in industries such as semiconductor manufacturing and healthcare facilities. His BSME in Mechanical Engineering from the University of Arizona, along with certifications such as Professional Mechanical Engineer and Certified Forensic Litigation Consultant, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving mechanical systems and code compliance.

HVACHVAC systemsCleanrooms+2

Civil Engineering

ME

MEGAN E. ABADIE, P.E.

Engineer: Civil and Environmental

Concord, California★ 7.8

MEGAN E. ABADIE, P.E. is a civil and environmental engineering expert specializing in forensic investigations related to structural and facility damage. With a career spanning civil engineering, hydrology, and environmental compliance, she brings a comprehensive framework to litigation work involving complex infrastructure and environmental systems. Her work centers on investigating root causes of structural damage, assessing the impact of environmental factors on infrastructure, and evaluating compliance with engineering standards. Ms. Abadie has been retained in numerous expert witness and consulting engagements across the western United States, involving cases of construction defects, sewer system failures, and water intrusion issues. Her MS in Civil and Environmental Engineering from San Jose State University, along with her NASSCO Pipeline, Lateral, and Manhole Assessment Certification, reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving flooding, sewer systems, and environmental compliance.

Hydrology

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