Load-Deformation Behavior of Composite Cylinders with Integrally-Formed Braided and with Machined Circular Holes

Author:

Brookstein David S.1,Tsiang Tseng-Hua1

Affiliation:

1. Albany International Research Co. 1000 Providence Highway Dedham, MA 02026

Abstract

The load-deformation behavior of braided ±45-deg graphite/epoxy cylinders with integrally-formed braided and machined holes has been investigated. Axial tension or compression was applied to the cylinders via pairs of diametrically-opposed holes at the mid-length of the specimens. Pin-joint bearing tests were conducted on another set of specimens. Strains were measured around the hole and at a range of locations along the cylinder length and circumference. The strain concentration effects and failure modes are illustrated and discussed. Integrally-formed braided holes are seen to provide an in creased joint bearing strength compared with machined holes in the composite materials studied.

Publisher

SAGE Publications

Subject

Materials Chemistry,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites

Reference8 articles.

1. Post, R.J. "Braiding Composites—Adapting the Process for the Mass Production of Aerospace Components," Proc. 22nd National SAMPE Symposium and Exhibition, pp. 486-503 (April 1977).

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