Response of CFRP laminates under high strain rate compression until failure

• Type: Article in International Scientific Journal
• Date: 2005

Authors

R. M. Guedes (Author) FEUP; M. A Vaz (Author) FEUP; F. J. Ferreira (Author) Other; J. L. Morais (Author) Other

Journal

Title: Science and Engineering of Composite Materials

Vol. 12 No. 1

Pages: 145-151

ISSN: 0334-181X

Publisher: Walter De Gruyter

Indexing

ISI Web of Knowledge - 6 Citations

Scopus - 5 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Materials engineering

Other information

Authenticus ID: P-000-6QP

Abstract (EN): This work describes an experimental characterization: the non-linear rate-dependent mechanical behavior of a composite material under compression. Fiber reinforced polymer matrix composites exhibit non-linear mechanical behavior, except in fiber direction, which is rate-dependent. In this work the Texipreg (R) HS160 REM material system was used, comprising high strength carbon fiber and epoxy resin. Unidirectional laminates were tested under uniaxial compression tests on a universal testing machine. The stress/strain curves of several specimens were obtained at three different strain rates of 0.07, 0.001 and 0.0001/s. In all cases tests were continued until failure was reached to measure the strain rate effect on strength. A 3-parameter constitutive viscoplastic model /6,7/ was used to describe the mechanical behavior. This model was developed based on data for strain rate between 0.0001 and 0.07/s. In transverse direction the viscoplastic model was able to predict the high strain rate experiments conducted on a Split Hopkinson Pressure Bar.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7