Monitoring Fatigue Damage in CFRP Using Acoustic Emission and Radiographic Techniques

Gustafson C-G; Seldén RB

doi:10.1520/STP36319S

SYMPOSIA PAPER Published: 01 January 1985

STP36319S

Monitoring Fatigue Damage in CFRP Using Acoustic Emission and Radiographic Techniques

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Tension-tension fatigue tests (R = 0.05) have been performed on quasiisotropic (0/±45/90)_s graphite/epoxy specimens. Results from the nondestructive monitoring of damage initiation and growth using both acoustic emission (AE) and X-ray radiography are presented. Damage development in the form of transverse cracking in the 90° plies and delamination at the −45/90 interfaces could be detected using both techniques. This shows that AE could be used as a nondestructive test method for detecting the onset and growth of transverse cracking and delamination in graphite/epoxy specimens.

Scanning electron microscopy was used for fractographic investigation of the delaminated surfaces.

Author Information

C-G, Gustafson

The Swedish Plastics and Rubber Institute, Sundsvall, Sweden

RB, Seldén

The Swedish Plastics and Rubber Institute, Sundsvall, Sweden

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Details

Developed by Committee: D30

Pages: 448–464

DOI: 10.1520/STP36319S

ISBN-EB: 978-0-8031-4941-0

ISBN-13: 978-0-8031-0414-3

Monitoring Fatigue Damage in CFRP Using Acoustic Emission and Radiographic Techniques

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