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Fastener and Latch Mechanisms Forensic, Expert Witness and Litigation Support
Expert WitnessForensic Expert
We provide services for cases involving fasteners, latches, aircraft rapid decompression and wind damage. We make use of state-of-the-art analysis tools and computer software to provide definitive results and undisputable conclusions.
Argos Engineering offers services and expertise in the following areas:
-Fasteners and mechanically-fastened joint failures
-Latching mechanisms and latched joint failures, particularly aircraft structural latches
-Aircraft rapid decompression
-Mechanism kinematics and failure analysis
-Metal Forming (hot and cold forging) and processing (heat treatment, finishing)
-Fastening of laminated composite materials
-Wind load analysis
-Inspections with reports
-Deposition and trial testimony
-New product development and testing
Litigation support services include but are not limited to:
Inspections with reports
Deposition and trial testimony
Litigation Support Services
Argos Engineering provides litigation consulting in the areas of products liability and patent infringement. Argos' principal, Dr. John D. Pratt, has extensive experience with fasteners, latches and mechanisms, including manufacturing processes, standardization and performance. Dr. Pratt has also developed sophisticated analytical tools to analyze the influence of explosive decompression on aircraft interiors and structures.
Areas of Expertise
Wind Load Analysis, Aircraft Decompression, Kinematic Analysis, Latching Mechanisms, Wind Damage, Fasteners.
Argos Engineering provides new product development consulting for the Aerospace Fastener and Aircraft Interiors industries, as well as litigation consulting in the areas of mechanisms, latches and fasteners.
Argos' principal, Dr. John D. Pratt, has extensive experience with fasteners, latches and mechanisms, including manufacturing processes, standardization and performance. Dr. Pratt has also developed sophisticated analytical tools to analyze the influence of explosive decompression on aircraft interiors and structures.
As an aerospace industry executive in 2005, Dr. Pratt co-invented and led the development of the post-9/11 secure (terrorist-proof) cockpit door decompression latches now installed on half the world's fleet of commercial transport aircraft.
Before entering private practice in 2005, Dr. Pratt co-invented and led the development of the post-9/11 secure (terrorist-proof) cockpit door decompression latches now installed on half the world's fleet of aircraft.
Previously Dr. Pratt invented and commercialized the first viable blind fastening system for laminated composites. After 24 years, that system (Monogram Aerospace Fasteners' Composi-Lok©) remains the one of the most-used structural blind fasteners for composite airframe assembly and is the benchmark against which other fasteners are measured.
Dr. Pratt continues to work with Airbus, Lockheed, and Boeing on the development of improved fastening systems that address the challenges of robotic assembly, aesthetic appearance, and lightweight assembly.
Argos Engineering, Laguna Niguel, CA. June 2005 - Present
Hartwell Corporation, Placentia, CA. August 2000 - June 2005
Vice President, Engineering
Textron Aerospace Fasteners, Santa Ana, CA. March 1988 - July 2000
Vice President, Research and Development
Olympic Fastening Systems, Downey, CA. August 1969 - February 1979
Sr. Project Engineer, R&D
Professional Engineering License (Mechanical Engineering), CA, 1979
Legal Experience & Services
Argos Engineering's recent litigation consulting projects have included aircraft engine cylinder head bolt failure analysis, aircraft hanger wind-induced anchorage loss, motor home retractable bunk mechanism failure analysis, wind-induced structural damage, glass rack safety analysis, and storm drain cover patent infringement.
Dr. Patt´s court experience includes testimony in several patent infringement and products liability suits, as well as extended testimony before the Federal Trade Commission.
National Academy of Forensic Engineers (NAFE)
National Society of Professional Engineers (NSPE/CSPE)
American Society of Mechanical Engineers (ASME)
American Society of Civil Engineers (ASCE)
American Society of Metals (ASM)
Society of Forensic Engineers and Scientists (SFES-Candidate)
American Society of Forensic Sciences (AAFS)
Dr. Pratt has chaired several national and international committees on fastener standardization and testing, and advanced the state-of-the-art in fastening and latching technology several times during his career.
Seminars & Training
Forensic Engineering Seminars
July 10-11, 2005: National Academy of Forensic Engineers, Chicago
October 15-16, 2005: Society of Forensic Engineers and Scientists, Concord
January 28-29, 2006: Society of Forensic Engineers and Scientists, Santa Monica
February 20-24, 2006: American Academy of Forensic Sciences, Seattle WA
March 25-26, 2006 Society of Forensic Engineers and Scientists, Yosemite
May 17-19, 2006: American Society of Civil Engineers, Long Beach
October 7-8, 2006: Society of Forensic Engineers and Scientists, Incline Village
"Fastening of Advanced Composites" NASA conference, 1983
"Testing and Analysis of Mechanically-Fastened Lap Joints" Ph.D. Dissertation, John D. Pratt
“Analytical Modeling of Bolted Lap Joint Load-Elongation Behavior” Journal of Aerospace Engineering, American Society of Civil Engineers, January 2002
“Comparative Load-Elongation Behavior of Single-Bolted and Dual-Bolted Lap Joints”, Journal of Aerospace Engineering, American Society of Civil Engineers, April 2002
“The Influence of Conical Head Geometry on the Slip Resistance of Bolted Joints”, Journal of Aerospace Engineering, American Society of Civil Engineers, October 2002
"Rapid Decompression of Pressurized Aircraft", Journal of Failure Analysis and Prevention, American Society of Metals, December 2006
“Allowables-Based Flow Curves for Nonlinear Finite-Element Analysis”, Journal of Failure Analysis and Prevention, American Society of Metals, April 2007
B.S.M.E. - California State University, Fullerton
M.S.M.E. - California State University, Fullerton
Ph.D. - Civil Engineering - Structural Mechanics (Airframe Joint Behavior) - University of California, Irvine