Mode II Mesoscopic Fracture Toughness of CFRP by Raman Coating Method-Reference-Cited by-同舟云学术

Mode II Mesoscopic Fracture Toughness of CFRP by Raman Coating Method

Published:2002-05 Issue:9 Volume:36 Page:1135-1148
ISSN:0021-9983
Container-title:Journal of Composite Materials
language:en
Short-container-title:Journal of Composite Materials

Author:

Miyagawa Hiroaki¹,Sato Chiaki²,Ikegami Kozo³

Affiliation:

1. Department of Precision Machinery Systems, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259Nagatsuta, Midori-ku, Yokohama 226-8502, Japan; Center for Intelligent Processing of Composites, Robert R. McCormick School of Engineering and Applied Science, Northwestern University, 2137 N Sheridan Rd., Evanston, IL 60208-3020, USA.

2. Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259Nagatsuta, Midori-ku, Yokohama 226-8503, Japan

3. Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259Nagatsuta, Midori-ku, Yokohama 226-8503, Japan; Department of Mechanical Engineering, College of Engineering, Tokyo Denki University, 2-2 Kandanishiki-cho, Chiyoda-ku, Tokyo 101-8457, Japan.

Abstract

Mesoscopic fracture toughness of epoxy matrix phase in unidirectional Carbon Fiber Reinforced Plastics (CFRP) in Mode II loading was investigated using End Notched Flexure (ENF) specimens and Raman spectroscopy. The distribution of shear strain near the crack tip in the epoxy matrix phase was measured experimentally. A lead oxide (PbO) thin film was deposited on the measured surface of the ENF specimen by Physical Vapor Deposition (PVD) as the pretreatment for Raman spectroscopy. The Mesoscopic fracture toughness of the epoxy matrix phase in CFRP in Mode II was determined using the measured results. It was also investigated using the Finite Element Method (FEM). The macroscopic fracture toughness measured by conventional ENF testing was four times as great as the mesoscopic fracture toughness of the epoxy matrix phase.

Publisher

SAGE Publications

Subject

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

Link

http://journals.sagepub.com/doi/pdf/10.1177/0021998302036009593

Reference16 articles.

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