SYMPOSIA PAPER Published: 01 January 1961
STP46377S

Evaluation of Reinforcements for Structural Plastics

Source

There is still a need for further standardization in the testing of reinforced plastics for structural purposes. Several variables in the preparation and testing of glass-fabric-reinforced test specimens are shown to have a marked effect on the mechanical data obtained. The variation in apparent properties can be as great as 100 per cent. The deficiencies of existing test methods for roving reinforced plastics are discussed. An improved procedure for the fabrication of test specimens containing parallel roving reinforcements, as well as methods for stressing the specimens to determine their flexural properties and horizontal shear strengths, are described. A hydraulic tester for determining the tensile strength and Young's modulus of elasticity of parallel roving-reinforced rings is also described.

Author Information

Erickson, P., W.
U. S. Naval Ordnance Laboratory, White Oak, Silver Spring, Md.
Milani, V.
U. S. Naval Ordnance Laboratory, White Oak, Silver Spring, Md.
Silver, I.
U. S. Naval Ordnance Laboratory, White Oak, Silver Spring, Md.
Perry, H., A.
U. S. Naval Ordnance Laboratory, White Oak, Silver Spring, Md.
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Details
Developed by Committee: D20
Pages: 28–58
DOI: 10.1520/STP46377S
ISBN-EB: 978-0-8031-6785-8
ISBN-13: 978-0-8031-6582-3