Accession Number : ADA305373

Title :   Wave Propagation in Graphite/Epoxy Laminates Due to Impact.

Descriptive Note : Interim rept.,

Corporate Author : PURDUE UNIV LAFAYETTE IN COMPOSITE MATERIALS LAB

Personal Author(s) : Tan, T. M. ; Sun, C. T.

PDF Url : ADA305373

Report Date : DEC 1982

Pagination or Media Count : 171

Abstract : The low velocity impact response of graphite/epoxy laminates is investigated theoretically and experimentally. A 9-node isoparametric finite element in conjunction with an empirical contact law was used for the theoretical investigation. Flat laminates subjected to pendulum impact were used for the experimental investigation. Theoretical results are in good agreement with strain gage experimental data. The collective results of the investigation indicate that the theoretical procedure describes the impact response of the laminate up to about 150 in/sec. impact velocity.

Descriptors :   *IMPACT, *STRESS WAVES, *GRAPHITE EPOXY COMPOSITES, EXPERIMENTAL DATA, FINITE ELEMENT ANALYSIS, THEORY, LOW VELOCITY, WAVE PROPAGATION, STRUCTURAL RESPONSE, EPOXY LAMINATES, STRAIN GAGES.

Subject Categories : Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE