VEHICLE COMPONENT FATIGUE TESTING

This paper, read at SEECO 79 in May 1979, demonstrates that the application of established principles can make a major contribution to the development of more reliable vehicle systems. Component/vehicle compatibility can only be achieved by close co-operation. The author discusses the classification of components according to the effect that fatigue failure would have on the performance of the vehicle or system in service. Definitions and examples are given of cases where fatigue would be: (I) unacceptable; (II) critical; (III) major; (IV) minor or non-critical. Component and service capability duty distribution are related. Methods of performing accelerated tests are examined. The development of an accelerated vibration fatigue technique test of a fuel adjusting plate made in a complicated shape is given as an example. A theoretical study of the mode of vibration has also led to an improved testing procedure. Alloy and iron castings used as housings or support brackets are assessed for fatigue strength using electromagnetic vibrators to compare their characteristics with units of known service reliability. Engines and rotating auxiliary equipment are variable frequency vibration generators; the natural frequency of the component must be outside the range of engine frequencies. (TRRL)

  • Corporate Authors:

    Modino Press Limited

    50 Pine Grove
    London N2O 8LA,   England 
  • Authors:
    • Powell, D E
  • Publication Date: 1980-6

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Filing Info

  • Accession Number: 00334137
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Aug 15 1981 12:00AM