Title

An Assessment of Buffer Strips for Reduction of Stress Concentration At Cutouts in Composite Laminates

Abstract

A shear lag solution for a hybrid unidirectional buffer strip laminate containing a rectangular cutout is presented. Fiber stresses and displacements in the main panel and buffer strips are given as explicit functions of fiber and matrix properties, and laminate and cutout configurations. Stress concentration factors and laminate ultimate strengths for both soft and stiff buffer strips are presented. A substantial improvement in the notched strength is shown to be possible by using low modulus and high strength fibers for buffer strips. The stress concentration factors for a rectangular cutout are compared with those of a rectilinear crack in a buffer strip laminate. © 1987.

Department(s)

Mechanical and Aerospace Engineering

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1987 Elsevier, All rights reserved.


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