Accession Number : AD0684137
Title : THEORETICAL MODEL OF DUCTILE FRACTURE INSTABILITY BASED ON STRESS-WAVE EMISSION.
Descriptive Note : Final rept.,
Corporate Author : AEROJET-GENERAL CORP SACRAMENTO CALIF
Personal Author(s) : Gerberich,W. W. ; Reuter,W. G.
Report Date : FEB 1969
Pagination or Media Count : 59
Abstract : The report discusses a postulated, very general interpretation of fracture in terms of how dislocation mobility affects the local fracture stress. However, it is difficult to correlate this concept directly to the slow crack growth process which occurs in many complex materials. Also, there has been little experimental evidence of dislocation dynamics and discontinuous crack motion in complex materials which would allow such a model to be established. This program was initiated to study these characteristics in an effort to establish such a fracture criterion. (Author)
Descriptors : (*ALUMINUM ALLOYS, FRACTURE(MECHANICS)), (*FRACTURE(MECHANICS), THEORY), DISLOCATIONS, LOADS(FORCES), STRAIN GAGES, CRACK PROPAGATION, TRANSDUCERS, INSTRUMENTATION, COLD WORKING, STRESSES, TENSILE PROPERTIES, ACOUSTIC PROPERTIES, MECHANICAL WAVES, CALIBRATION, AGING(MATERIALS), SOLID SOLUTIONS, SOLUTION HEAT TREATMENT
Subject Categories : Metallurgy and Metallography
Distribution Statement : APPROVED FOR PUBLIC RELEASE