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Meeting Materials Science & Technology 2019
Symposium Failure Prevention and Unconventional Failures
Presentation Title Investigation of an Amphibious Duck-boat Fracture in Seattle, WA
Author(s) Adrienne Lamm
On-Site Speaker (Planned) Adrienne Lamm
Abstract Scope On September 24, 2015, a DUKW amphibious passenger vehicle (aka “duck-boat”) traveling north on Route 99 in Seattle, Washington crossed the center line into the southbound lanes of oncoming traffic. The vehicle struck a motorcoach that was traveling south, killing five passengers and injuring others in both vehicles. During the on-scene phase of the investigation, National Transportation Safety Board investigators found the front driver’s side wheel had separated from the DUKW vehicle. The subsequent materials laboratory investigation found that the wheel had fractured from the front axle housing due to fatigue cracking. This presentation will highlight the numerous techniques used in this investigation, including non-destructive inspection, electron microscopy, metallography, and finite element modeling, to determine the cause of this accident. This presentation will also discuss the recommendations that resulted from this investigation to prevent future accidents on this unique vehicle.
Proceedings Inclusion? Definite: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

As Designed Does Not Always Equal as Manufactured
Cold Spray for Cavitation Erosion Protection for Hydropower Applications
Common Failures, Uncommon Features
Electrochemical Measurement of Corrosion Protection Using Vapor Corrosion Inhibitors
Failure Analysis of a LORAN C Tower Near Greenland
Failure by Design
Failure Prevention of High Strength Bolts
Failure Severity Mitigation through the Use of Exception-Handling Devices
Human Factors in Control Systems
Investigation of an Amphibious Duck-boat Fracture in Seattle, WA
Laboratory Testing of Major Components in Support of Continued Operation
Leak in Water Line 45 Years in the Making
Metallurgical Failure Analysis of a Fractured Intermediate Coupling
NTSB Recommendations to Prevent Future Transportation Accidents
Radiant Tube Heater Failure Analysis and Resulting Changes to NFPA 54
The Failure Analysis & Prevention of a Large and Critical Extrusion Gearbox : Part 3 - Material, Microstructure & Heat Treatment : Curiosities of Some Gear Teeth
The Power of the "Infinite Smalls" Where Heavy Rude Working Conditions Are Involved !
The Unusual Case of a Not-so-Obvious Brake Line Failure
Using Material Science to Understand Seemingly Random Product Failures
When a Highway Bridge Suddenly Lifts Its Up Without Prior Announcement … !
Wind-induced Failure of 9m Street Lamp Poles

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