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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.67 No.5
- 발행연도
- 2018.1
- 수록면
- 545 - 553 (9page)
이용수
초록· 키워드
오류제보하기
Mode II delamination propagation is an important damage mode in laminated composites and this paper aims to investigate the behavior of this damage in laminated composite materials using acoustic emission (AE) technique. Three different lay-ups of glass/epoxy composites were subjected to mode II delamination propagation and generated AE signals were recorded. In order to investigate the propagation of delamination behavior of these specimens, AE signals were analyzed using Wavelet Packet Transforms (WPT) and Fast Fourier Transform (FFT). In addition, conventional AE analyses were used to enhance understanding of the propagation of delamination damage. The results indicate that different fracture mechanisms were the main cause of the AE signals. The dominant mechanisms in all the specimens were matrix cracking, fiber/matrix debonding and fiber breakage, with varying percentage of the damage mechanisms for each lay-up. Scanning Electron Microscopy (SEM) observations were in accordance to the AE results.
목차
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참고문헌 (35)
참고문헌 신청
American Society for Testing and Materials (ASTM) / 2001 / Test Method D6671-01; Standard Test Method for Mixed Mode IMode II Interlaminar Fracture Toughness of Unidirectional Fiber Reinforced Polymer Matrix Composites
Coifman, R.R. / 1993 / Signal Processing and Compression with Wavelet Packets, Progress in Wavelet Analysis and Applications, Editions Frontiers
Crews, J.H. / 1988 / A Mixed-Mode Bending Apparatus for Delamination Testing, NASA-TM-100662
Daubechies, I. / 1992 / Ten Lectures on Wavelets
De Groot, P.J. / 1995 / Real time frequency determination of acoustic emission for different fracture mechanisms in carbon/epoxy composites / Compos. Sci. Technol. 55(4):405~412
Coifman, R.R. / 1993 / Signal Processing and Compression with Wavelet Packets, Progress in Wavelet Analysis and Applications, Editions Frontiers
Crews, J.H. / 1988 / A Mixed-Mode Bending Apparatus for Delamination Testing, NASA-TM-100662
Daubechies, I. / 1992 / Ten Lectures on Wavelets
De Groot, P.J. / 1995 / Real time frequency determination of acoustic emission for different fracture mechanisms in carbon/epoxy composites / Compos. Sci. Technol. 55(4):405~412
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