A traffic accident caused by fatigue failure of axle |
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| Authors: | Park Chan-Seong Lee Sang-Hoon Lee Kyu-Jung |
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| Affiliation: | Department of Physical Engineering, Central District Office of National Institute of Scientific Investigation, Daejeon 305-348, Korea. color@nisi.go.kr |
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| Abstract: | ![]()
An investigation of a traffic accident involving a tractor-trailer and a passenger car that were traveling at high speed is presented. The cause was the fracture of a trailer axle. The investigation showed that the fracture was because of the fatigue failure. In addition, cracks were found in the remaining three trailer wheels. Hardness measurements showed that, because of inadequate heat treatment of the metal, they were prone to failure. |
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| Keywords: | forensic science traffic accident trailer axle fatigue failure hardness heat treatment |
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