Accession Number:

ADA230383

Title:

Dynamic Fracture Analysis by Moire Interferometry

Descriptive Note:

Technical rept.

Corporate Author:

WASHINGTON UNIV SEATTLE DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

• Arakawa, K.
• Drinnon, R. H.
• Kosai, M.
• Kobayashi, A. S.

Report Date:

1990-12-01

Pagination or Media Count:

15.0

Abstract:

Dynamic moire interferometry was used to measure separately the u- and v-displacement fields surrounding a rapidly propagating crack tip in Homalite-100 and 7075-T6 aluminum alloy plates. This transient crack tip displacement data was then used to compute the dynamic stress intensity factor and the remote stress component. J-integral values was also estimated using the static approximate procedure. This static analysis provided the correct J when the contour integral was taken within 3 mm of the crack tip. jhd

Descriptors:

• *PROPAGATION
• CRACKS
• INTEGRALS
• FRACTURE(MECHANICS)
• INTERFEROMETRY
• J INTEGRALS
• STATICS
• STATIC TESTS
• CONTOURS
• STRESS CONCENTRATION
• MOIRE EFFECTS
• DYNAMICS
• VALUE

Subject Categories:

• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE