STP279: Evaluation of Reinforcements for Structural Plastics

    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.

    Pages: 31    Published: Jan 1961


    Abstract

    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.


    Paper ID: STP46377S

    Committee/Subcommittee: D20.18

    DOI: 10.1520/STP46377S


    CrossRef ASTM International is a member of CrossRef.