Accession Number : AD0663783

Title :   THE INFLUENCE OF FRETTING ON FATIGUE,

Corporate Author : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT PARIS (FRANCE)

Personal Author(s) : Harris,W. J.

Report Date : APR 1967

Pagination or Media Count : 42

Abstract : The intrusion of fretting fatigue in the field of flight structures has been responsible, in many cases, for the high strength reduction factors, of 10 or more, commonly encountered. Consequently, a primary objective of the report was to consider the evidence to support the claim that fretting must be ranked in importance with geometric stress concentration and the like, when considering the fatigue behaviour of structures. Thus, Mean Structures Curves, Crack Propagation And Non-Propagating Cracks and some Fundamental Fretting Fatigue Researches have been described and interpreted with the elucidation of the fretting fatigue mechanism in mind. A survey of certain Anti-Fret Techniques has been included not only to emphasize the gains to be made in terms of structural efficiency but to justify the main thesis that Primarily, the fretting fatigue mechanism is controlled by the stress fields generated by the contact of two surface topographies. (Author)

Descriptors :   (*FATIGUE(MECHANICS), *CORROSION), (*METAL JOINTS, FATIGUE(MECHANICS)), EROSION, CORROSION INHIBITION, INTERACTIONS, SURFACES, DEGRADATION, MICROSTRUCTURE, COATINGS, AIRCRAFT, ALUMINUM ALLOYS, MOLYBDENUM COMPOUNDS, SULFIDES, EPOXY RESINS

Subject Categories : Properties of Metals and Alloys
      Couplers, Fasteners, and Joints

Distribution Statement : APPROVED FOR PUBLIC RELEASE