Study of fracture of specimens made of fiberglass plastic using acoustic-emission and strain measurements

The crack resistance of specimens made of a fiberglass plastic composite material has been studied. All specimens had approximately the same geometric dimensions. At the center of the specimens, there were 25-mm-long notches on both sides. The specimens were loaded with a static or cyclic load at a...

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Bibliographic Details
Published in:Russian journal of nondestructive testing 2009-02, Vol.45 (2), p.103-108
Main Authors: Stepanova, L. N., Lebedev, E. Yu, Kabanov, S. I., Chaplygin, V. N., Katarushkin, S. A., Ramazanov, I. S., Kanifadin, K. V.
Format: Article
Language:English
Subjects:
Acoustic measurement
Acoustic Methods
Acoustics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Fiberglass
Glass fiber reinforced plastics
Localization
Materials Science
Nondestructive testing
Position (location)
Strain gages
Structural Materials
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Summary:The crack resistance of specimens made of a fiberglass plastic composite material has been studied. All specimens had approximately the same geometric dimensions. At the center of the specimens, there were 25-mm-long notches on both sides. The specimens were loaded with a static or cyclic load at a frequency f = 5 Hz. The tests were performed using acoustic-emission (AE) and strain gage measurements. The AE technique allowed stable localization of a flaw at an early stage of growth and made it possible to automate the measurement process. The strain gage measuring system was used to find deformations in the zones of localization of AE signals.
ISSN:1061-8309
1608-3385
DOI:10.1134/S1061830909020041