Accession Number:

ADA021589

Title:

Dynamic Photoelastic Analysis of Three Fracture Specimens.

Descriptive Note:

Technical rept.,

Corporate Author:

WASHINGTON UNIV SEATTLE DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

• Kobayashi,A. S.
• Mall,S.

Report Date:

1976-01-01

Pagination or Media Count:

30.0

Abstract:

Previous dynamic photoelasticity results on single edge-notched tension plates without and with stringer reinforcements, dynamic tear test DTT specimens and wedge-loaded double cantilever beam DCB specimens are reviewed and some common fracture dynamic features in these three specimens machined from 9.53 mm thick Homalite-100 plates are discussed. Comparisons between dynamic finite element and dynamic photoelastic analyses of single edge-notched tension plates and one-dimensional dynamic, and dynamic photoelasticity analyses of wedge-loaded DCB specimens verified the existence of large fluctuations in dynamic stress intensity factors during crack propagation in the specimens considered in these investigations.

Descriptors:

• *STEEL
• *FRACTURE(MECHANICS)
• *PHOTOELASTICITY
• STRESSES
• FINITE ELEMENT ANALYSIS
• CRACK PROPAGATION
• DYNAMIC TESTS
• NOTCH TOUGHNESS

Subject Categories:

• Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE