Accession Number:

ADA002134

Title:

Exploratory Development of Basic Failure Behavior of Anisotropic Polymeric Material.

Descriptive Note:

Final rept. 1 May 72-15 Jan 73,

Corporate Author:

WASHINGTON UNIV ST LOUIS MO MATERIALS RESEARCH LAB

Personal Author(s):

• Wu,Edward M.

Report Date:

1974-04-01

Pagination or Media Count:

36.0

Abstract:

Crack extension in laminated composite has been analyzed through classical laminated plate analysis. The stress vector acting on the periphery of a critical volume encap- sulating the crack tip is obtained. This stress vector is compared to the strength vector. The comparison is made through polar representation of the stress and strength vector from the crack tip. Experimental results supported the hypotheses that the coincidence of the stress and strength vector determine the crack propagation trajectory. Author, modified-PL

Descriptors:

• *LAMINATES
• *FRACTURE(MECHANICS)
• STRESSES
• COMPOSITE MATERIALS
• CRACK PROPAGATION
• EPOXY RESINS
• REINFORCED PLASTICS

Subject Categories:

• Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE