Cryogenic Interlaminar Shear Strength of G-l0CR Glass-cloth/Epoxy Laminates by the Short-beam Method.

概要

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Interlaminar beam tests in the form of three-point flexure were examined both experimentally and analytically. The short-beam shear tests were carried out at room temperature, 77K and 4K to evaluate the interlaminar shear strength of G-10CR glass-cloth/epoxy laminates. These tests were conducted in accordance with ASTM D2344-84. The effects of temperature, specimen width and span-to-thickness ratio on apparent interlaminar shear strength are shown graphically. Photomicrographs (scanning electron micrographs, optical micrographs) of actual failure modes were utilized to verify the failure mechanisms. A three-dimensional finite element analysis was also performed to investigate the effects of specimen width and span-to-thickness ratio on the shear stress distribution in the mid-plane of the beam. Effective elastic moduli were determined under the assumption of uniform strain inside the representative volume element. The numerical findings were then correlated with the experimental results.
公益社団法人低温工学・超電導学会 (旧社団法人低温工学協会)の論文