Accession Number : AD0687161
Title : FRACTURE DYNAMICS - A PHOTOELASTIC INVESTIGATION.
Descriptive Note : Technical rept.,
Corporate Author : WASHINGTON UNIV SEATTLE DEPT OF MECHANICAL ENGINEERING
Personal Author(s) : Bradley,W. B. ; Kobayashi,A. S.
Report Date : APR 1969
Pagination or Media Count : 41
Abstract : Isochromatic patterns associated with dynamic brittle crack propagation were recorded by means of a modified Schardin multiple-spark-gap, dynamic polariscope for 10 x 10 inch edge crack panels. With the material properties determined by dynamic calibration, the resulting photoelastic information was used to evaluate the elastic fields surrounding the propagating crack by the semi-inverse technique. This solution was characterized by the dynamic stress intensity factor whose behavior was determined for accelerating, constant velocity, and arresting cracks. (Author)
Descriptors : (*FRACTURE(MECHANICS), CRACK PROPAGATION), (*CRACK PROPAGATION, *PHOTOELASTICITY), CALIBRATION, STRESSES, STRAIN(MECHANICS), REAL TIME, HIGH SPEED PHOTOGRAPHY, INTERFERENCE, OPTICAL EQUIPMENT, INSTRUMENTATION, MATHEMATICAL MODELS
Subject Categories : Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE