Design and Testing
Unidirectional composite axial tensile specimens
Dr. Don Adams explains why the design of tensile test coupons is more art than science, and explains the implications of that art for testing accuracy.
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Flexure test methods
The three fundamental mechanical property characterization tests of materials are tension, compression and shear. Note that flexure is not included. This article addresses some of the reasons why. When a beam resting on supports near its ends is loaded, the supported side is in tension and the opposite side is in
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Current compression test methods
Dr. Don Adams discusses the test methods and fixtures currently available to test the compressive strength of composites.
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Open-hole compression testing
By the early 1980s, the emphasis was shifting from development of composite materials to development of tough, durable composite materials. The common catch phrase that emerged was "effects of defects." This new emphasis on toughness dictated the development of test methods that could measure this material
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