Design & Tooling

Future multifunctional structures: Composites needed

Barton Bennett (Odyssian Technology, South Bend, Ind.) discusses multifunctional systems that will soon integrate composite structures with sensors, mechanisms and subsystems.

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The short beam shear test

Dr. Don Adams (Wyoming Test Fixtures Inc., Salt Lake City, Utah) discusses short beam shear testing methodology.

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Out of Autoclave

SQRTM enables net-shape parts

New out-of-autoclave process combines resin transfer molding with prepregs for complex helicopter part prototype.

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Aerospace

Fastener shear test methods

Dr. Donald Adams (Wyoming Test Fixtures, Salt Lake City, Utah) appraises existing methods for testing the performance of fasteners loaded in transverse shear.

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ATL/AFP

Deepsea submersible incorporates composite pressure capsule

Spencer Composites Corp. (Sacramento, Calif.) fabricates the inner carbon/epoxy composite pressure capsule for a submersible deepsea vessel the late Steve Fossett was to take to the depths of the Pacific Ocean's Mariana Trench.

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Composites 4.0

The digital thread: Transformation to automation

Dr. Leslie Cohen traces the “digital thread” on which automation of composites fabrication processes depends.

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Guide for Testing Polymer Matrix Composite Materials

Dr. Donald Adams offers insight into ASTM D 4762, a compendium of knowledge about standards relevant to testing polymer composites.

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Carbon Fibers

Digital design, RTM update aircraft propeller

Second-generation type-certified propeller delivers for Cirrus Aircraft’s SR-22 at a more affordable price.

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Glass Fibers

Building a bigger Big Wheel

Machining specialist scales up the 1970s icon, producing plugs and tools for an exact fiberglass replica at a Disney resort.

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Block shear strength of adhesive bonds

Dr. Don Adams describes two methods (ASTM D 905 and ASTM D 4501) for loading adhesive bonds in direct shear while minimizing undesirable peel and through-thickness tensile stresses.

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