The significance of the results of Scanning Electron Microscope studies of the microstructural deformation and damage processes in different types of metals for the formulation of an engineering approach to the problem of fatigue and of its relation to fracture mechanics is discussed. The futility of attempts to develop a unique model of fatigue based either on physical theories of lattice defects or on mechanical theories of plastic strain accumulation is demonstrated, and the usefulness of fracture-mechanics concept applied to microcrack development and combined with probabilistic considerations based on order statistics is illustrated.

  • Corporate Authors:

    George Washington Transportation Research Institute. Center for Intelligent Systems Research


    Office of Naval Research

    Department of the Navy, 800 North Quincy Street
    Arlington, VA  United States  22217

    Naval Ship Systems Command

    Washington, DC  United States 

    Air Force Materials Laboratory

    Wright-Patterson Air Force Base
    Dayton, OH  United States  45433
  • Authors:
    • Freudenthal, A M
  • Publication Date: 1973-12

Media Info

  • Features: References;
  • Pagination: 63 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00091772
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: TR-16 Tech. Rpt.
  • Contract Numbers: N00014-67A-0214-0011
  • Files: TRIS
  • Created Date: Sep 10 1975 12:00AM