ENVIRONMENTAL FINITE LIFE FATIGUE TESTING. UTILIZING MINER'S HYPOTHESIS

This paper outlines one method suitable for cost effective computerized theoretical finite life structural fatigue design and determination of means for conducting laboratory fatigue tests that can predict or confirm finite service life of a component or product. Basic modified Goodman type fatigue test data is utilized with the actual environmental loading spectrum and Miner's hypothesis to determine the damaging cycles experienced in service. The total damaging portion of the environmental loading incurred during the long life of railroad equipment can then be applied in laboratory tests of practical duration. Hence, this is truly an environmental test and not what is often termed an accelerated fatigue test. The technical opinions expressed herein are those of the author and do not necessarily represent the policy of the Association of American Railroads.

• Supplemental Notes:
  • Contributed by the Rail Transportation Division of The American Society of Mechanical Engineers for presentation at the ASME-IEEE Joint Railroad Conference, Pittsburgh, Pa., April 3-4, 1974
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Cook, R M
• Publication Date: 1974-1

Media Info

• Features: Figures; References;
• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Fatigue (Physiological condition); Freight cars
• Old TRIS Terms: Goodman diagram; Modified goodman diagram
• Subject Areas: Railroads; Safety and Human Factors;

Filing Info

• Accession Number: 00054005
• Record Type: Publication
• Source Agency: American Society of Mechanical Engineers
• Report/Paper Numbers: ASME #74-RT-7
• Files: TRIS
• Created Date: Jun 3 1976 12:00AM