Acoustic emission and ultrasonic imaging in pultruded GRP composites

Author

Chow, T. ; Hutchins, D.A. ; Mottram, T.

Author_Institution

Dept. of Phys., Queen´´s Univ., Kingston, Ont., Canada

fYear

1991

fDate

8-11 Dec 1991

Firstpage

1053

Abstract

Some experiments in which acoustic emissions (AEs) and ultrasonic tomography were concurrently performed on samples of glass reinforced plastic (GRP) composites are described. Direct tensile tests were performed on rectangular plates of GRP samples, in which a circular hole was machined in their centers. Cracks that propagated from this hole were monitored by AEs throughout the loading phase, and by ultrasonic tomographic imaging at regular intervals. Analysis of this data indicated that the crack propagation seems to be controlled by the glass fiber breakage. The region of damage seems to extend well away from the visible crack

Keywords

acoustic emission testing; crack detection; glass fibre reinforced plastics; ultrasonic materials testing; acoustic emissions; circular hole; crack propagation; cracks; damage region; direct tensile tests; glass fiber breakage; glass fibre reinforced plastic composites; loading phase; pultruded GRP composites; rectangular plates; ultrasonic imaging; ultrasonic tomography; visible crack; Acoustic emission; Acoustic propagation; Acoustic testing; Glass; Monitoring; Optical imaging; Performance evaluation; Plastics; Tomography; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1991. Proceedings., IEEE 1991

Conference_Location

Orlando, FL

Type

conf

DOI

10.1109/ULTSYM.1991.234275

Filename

234275