Strength Tests of a CFRP Spar Using Methods of Acoustic Emission and Tensometry
- Authors: Stepanova L.N.1, Petrova E.S.1, Chernova V.V.2
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Affiliations:
- Chaplygin Siberian Aeronautical Research Institute
- Siberian Transport University
- Issue: Vol 54, No 4 (2018)
- Pages: 243-248
- Section: Acoustic Methods
- URL: https://journals.rcsi.science/1061-8309/article/view/181610
- DOI: https://doi.org/10.1134/S1061830918040101
- ID: 181610
Cite item
Abstract
Results of the strength tests of an aircraft wing spar made of Toray T1000 carbon fiber-reinforced plastic are presented. Construction failure zones have been inspected by the methods of acoustic emission (AE) and tensometry. Loading-induced changes in the stress-strain state (SSS) of wing-spar material have been analyzed. The coordinates of AE signal sources that correspond to the separation of the upper spar cap from the spar web have been determined. Algorithms for AE-data processing using wavelet transforms are considered. Connections have been established between changes in stresses emerging in CFRP material, AE signal structure, and the occurrence and propagation of spar fracture.
About the authors
L. N. Stepanova
Chaplygin Siberian Aeronautical Research Institute
Author for correspondence.
Email: aergroup@ngs.ru
Russian Federation, Novosibirsk, 630051
E. S. Petrova
Chaplygin Siberian Aeronautical Research Institute
Email: aergroup@ngs.ru
Russian Federation, Novosibirsk, 630051
V. V. Chernova
Siberian Transport University
Email: aergroup@ngs.ru
Russian Federation, Novosibirsk, 630049