Accession Number : ADA193751

Title :   J-Integral Measurement Using Moire Interferometry.

Descriptive Note : Technical rept.,

Corporate Author : WASHINGTON UNIV SEATTLE DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Dadkhah, M S ; Kobayashi, A S ; Wang, F X ; Graesser, D L

PDF Url : ADA193751

Report Date : Apr 1988

Pagination or Media Count : 19

Abstract : An improved moire interferometry, which records both the vertical and horizontal displacements simultaneously, was used to determine the J-internal within the confine of a constitutive relation. J-values, which are associated with stable crack growth in biaxially loaded 2024-T3 aluminum, single edge notched specimens, were found to be path independent and increased with crack extension. Keywords include: J-integral, Biaxial loading machine, Moire interferometry, Elastic-plastic fracture mechanics, Simultaneous displacement fields, Automated data reduction displacement fields, J-resistance curve and Stable crack growth.

Descriptors :   *CRACK PROPAGATION, *DISPLACEMENT, *INTERFEROMETRY, BIAXIAL STRESSES, CRACKS, EDGES, ELASTIC PROPERTIES, FRACTURE(MECHANICS), HORIZONTAL ORIENTATION, J INTEGRALS, LOADING(HANDLING), MACHINES, MEASUREMENT, MOIRE EFFECTS, PLASTIC PROPERTIES, STABILITY, SYNCHRONISM, VERTICAL ORIENTATION

Subject Categories : Optics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE