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<p>A crank arm on a mountain bicycle fractured during service. The purpose of the investigation was to identify the nature of the failure and any factors that would have contributed. Analysis revealed that the failure was due to torsional bending fatigue, without any evidence of material or processing flaws. It was deduced that the fracture was likely a normal end-of-life condition under the complicated spectrum loading in this application.</p>

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Failure Analysis of a Mountain Bicycle Crank Arm

  • 期刊论文

  • 发表日期：

    2025年5月8日

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  • B. A. Miller,
  • J. Barnes,
  • P. D. Swartzentruber,
  • M. Bayne,
  • A. Petters

摘要

A crank arm on a mountain bicycle fractured during service. The purpose of the investigation was to identify the nature of the failure and any factors that would have contributed. Analysis revealed that the failure was due to torsional bending fatigue, without any evidence of material or processing flaws. It was deduced that the fracture was likely a normal end-of-life condition under the complicated spectrum loading in this application.