scholarly journals Forensic Engineering Analysis of Design & Manufacturing Practices for an Automotive Spring

2017 ◽  
Vol 34 (1) ◽  
Author(s):  
John Leffler
Keyword(s):  
Quality Assurance ◽  
Control System ◽  
Failure Modes ◽  
Engineering Analysis ◽  
Vehicle Manufacturer ◽  
Apparent Absence ◽  
Automotive Control ◽  
Child Fatality ◽  
Forensic Engineering

A child fatality case focused on the failure of springs in an automotive control system switch. In the forensic engineering analysis, the actions of the spring manufacturer, switch manufacturer, control system manufacturer, and vehicle manufacturer were of interest. Relevant details included the spring manufacturing drawing, the spring design itself, the Design Failure Modes & Effects Analysis (DFMEA) conducted by the switch manufacturer, apparent absence of quality assurance testing, warranty return failure descriptions, and the actions taken by various entities upon notice of spring failures.

scholarly journals Forensic Engineering Analysis of Failed UTV Roll Cages

2016 ◽  
Vol 33 (1) ◽  
Author(s):  
Olof Jacobson ◽  
Stephen A. Batzer ◽  
Mark Kittel ◽  
Jesse A. Grantham ◽  
Guy J. Barbera ◽  
...  
Keyword(s):  
Failure Modes ◽  
Dynamic Testing ◽  
Engineering Analysis ◽  
Cage Structure ◽  
Element Analysis ◽  
Design Concepts ◽  
Dirt Road ◽  
Analysis Laboratory ◽  
Forensic Engineering ◽  
Alternative Designs

Two cases were analyzed that involved pitchover/rollover accidents of the same model side by side utility terrain vehicle (UTV). In each case, the UTV ran over a bump on a dirt road and pitched over. The roll cages collapsed, and the drivers suffered significant injuries. Both roll cages collapsed in a similar manner. The design and failure modes of the roll cage structure were analyzed. Engineering analysis included dynamic analysis, laboratory testing, vehicle dynamic testing, finite element analysis, and a review of fundamental mechanical engineering design concepts. Roll cage design and applicable standards were evaluated. Reasonable alternative designs were identified and analyzed.

Failure Modes and Effects Analysis Using Virtual Prototyping System with Microcontroller Model for Automotive Control System

2013 ◽  
Vol 46 (21) ◽  
pp. 562-563 ◽  
Author(s):  
Yasuo Sugure ◽  
Yasuhiro Ito ◽  
Yohei Nakata ◽  
Yusuke Takeuchi ◽  
Hiroshi Kawaguchi ◽  
...  
Keyword(s):  
Control System ◽  
Failure Modes ◽  
Virtual Prototyping ◽  
Automotive Control

Application to an automotive control system

2018 ◽  
pp. 177-210
Author(s):  
Longo Stefano ◽  
Tingli Su ◽  
Herrmann Guido ◽  
Barber Phil
Keyword(s):  
Control System ◽  
Automotive Control

scholarly journals Forensic Engineering Analysis Of Alleged Property Damage From Construction Vibrations

2010 ◽  
Vol 27 (2) ◽  
Author(s):  
D.S. Sax Saxena ◽  
Saxena Anu
Keyword(s):  
Case History ◽  
Construction Projects ◽  
Pile Driving ◽  
Engineering Analysis ◽  
Existing Buildings ◽  
Construction Methods ◽  
Forensic Engineering ◽  
Eye Examination ◽  
Florida Panhandle ◽  
Subsurface Treatment

The Influence Of Construction And Pile Driving Vibrations On Surrounding Buildings, Including Hospitals And Eye Examination Facilities, Sensitive Devices Such As Computers And Surgical Microscopes Or Electronic Machines, And People In The Urban Environment Is A Significant Consideration In Obtaining Project Approvals From Appropriate Agencies And Authorities. Implementation Of Construction Projects In Areas Adjacent To Existing Buildings (Aged, Historical, Residential, Commercial, Industrial, Medical Services, Or Electronic Services) Creates Additional Difficulties. Specialized Case History Is Presented Where Damage To Sensitive Structures From A Variety Of Vibratory Construction Methods Ranging From Pile Driving, Highway Construction, Rock Excavation And/Or Blasting, Was Considered. Twenty Homeowners From A Residential Subdivision In The Florida Panhandle, Claimed Damage Including Cracking To Their Properties During Construction Of Various Portions Of City Storm Water Treatment/Enhancement Project. It Was Also Alleged That During Excavation And Construction Of Drainage Structures, Especially Four Subsurface Treatment Vaults That Required Installation And Extraction Of Sheet Piles Using Vibratory Hammer, Stability Of The Nearby Residential Structures Was Endangered And Resulted In Movement/Cracking. Forensic Engineering Analysis Was Effectively Utilized To Identify, Investigate, And Remediate The Concerns As Well As Assist In Litigation And In Some Cases Avoidance. This Technical Paper Presents Some Legal Issues Related To Litigation, Mediation, And Resolution Involving Jurisprudence System And Introduces A Case History That Includes All Elements Of Forensic Engineering.

scholarly journals Forensic Engineering Analysis Of Lightning Strikes And Surge Related Losses

2013 ◽  
Vol 30 (1) ◽  
Author(s):  
Curtis E. Falany
Keyword(s):  
Engineering Analysis ◽  
Electronic Circuits ◽  
Lightning Strikes ◽  
Structure Damage ◽  
Significant Damage ◽  
Forensic Engineering ◽  
Living Organisms

Lightning Is A Powerful And Dangerous Natural Force. It Is Capable Of Inflicting Significant Damage To Our Environment And Causing Injury Or Death In Living Organisms. Electrical And Electronic Circuits Are Particularly Susceptible To Lightning, Both From Direct Strikes And From Lightning Induced Electrical Surges. Fires Often Result From Lightning Strikes. Injury And Death Can Result From Both Direct Strikes, Lightning Induced Electrical Surges, And Indirectly From Structure Damage And Fires. The Insurance In-Dustry Offers Coverage For Lighting Related Losses And A Forensic Engineer Is Often Consulted To Assist In Adjusting The Claim.

scholarly journals Forensic Engineering Analysis of Dynamic Forces Created by Pedestrians Impacting Plate Glass at Different Speeds

2015 ◽  
Vol 32 (1) ◽  
Author(s):  
Michael Kravitz
Keyword(s):  
Impact Load ◽  
Building Code ◽  
Engineering Analysis ◽  
Glass Panel ◽  
Impact Speed ◽  
Dynamic Forces ◽  
Exit Door ◽  
Forensic Engineering ◽  
Pedestrian Impact ◽  
The Impact

This paper examines the effect of a pedestrian inadvertently impacting a glass panel adjacent to a glass exit door. The glass panel was full length and unmarked, violating the local building code and building commissioner directives. The defense argued that the old building code, to which the college building was constructed, was “grandfathered” and there was no violation. Initial witness and plaintiff statements indicated that the plaintiff was running when he struck the panel, which shattered and caused the plaintiff to incur injuries. The plaintiff testified later, in deposition, that he was walking when he struck the glass. The court needed to establish liability percentage, which is common in civil cases, and it was necessary to determine at what pedestrian impact speed the glass panel would break. The analysis used Timoshenko’s theory of vibration plates, Roark’s stress strain formulas, ergonomics, and human factors to estimate the impact load and stresses on the glass panel that caused failure.

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