Location

La Jolla, CA

Start Date

1-1-1993 12:00 AM

Description

Conventional composite laminates draw their strength from high-modulus fibers placed in a single direction within each of many individual plies comprising a multilayer laminate. The plies are arranged in various directions in the plane of the laminate to tailor the stiffness of the finished part. However, the material is designed so that fibers from different layers do not communicate — or cross each others’ plane. This situation leads to relatively low tensile strength normal to the plane of the plies. In practice, this construction geometry means that the laminate is susceptible to damage in impact, where plies tend to come unbonded. After impact, the overall laminate strength, particularly the in-plane compressional strength, can be seriously impaired.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

12B

Chapter

Chapter 5: Engineered Materials

Section

Composite Properties

Pages

1177-1184

DOI

10.1007/978-1-4615-2848-7_151

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Ultrasonic Plate Waves in 3-D Braided Composites

La Jolla, CA

Conventional composite laminates draw their strength from high-modulus fibers placed in a single direction within each of many individual plies comprising a multilayer laminate. The plies are arranged in various directions in the plane of the laminate to tailor the stiffness of the finished part. However, the material is designed so that fibers from different layers do not communicate — or cross each others’ plane. This situation leads to relatively low tensile strength normal to the plane of the plies. In practice, this construction geometry means that the laminate is susceptible to damage in impact, where plies tend to come unbonded. After impact, the overall laminate strength, particularly the in-plane compressional strength, can be seriously impaired.