Predicting the strength of filament-wound specimens with surface cutsThe notched strength of filament-wound composite specimens was determined for coupons with various sized semielliptic surface notches. When the part-through notches did not cut the first 0-deg layer the strength was independent of the size of the notch and was equal to the unnotched tensile strength. When the cut penetrated 0-deg layers, the specimens failed in a two-part failure mode. The first part of the failure was modeled using fracture mechanics and a straight line tangent to the fracture mechanics solution, and the second part of the failure was modeled using a failure criterion that accounted for the moduli of 0-deg and helical layers.
Document ID
19900044522
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Morris, Don H. (Virginia Polytechnic Institute and State University Blacksburg, United States)
Harris, Charles E. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Structural Mechanics
Meeting Information
Meeting: International SAMPE Symposium and Exhibition