지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
This paper presents an experimental study on the detection and location of nonlinear scattering source due to the presence of fatigue crack in a laboratory specimen. The proposed technique is based on a combination of nonlinear elastic wave spectroscopy(NEWS) and time reversal(TR) focusing approach. In order to focus on the nonlinear scattering position due to the fatigue crack, we employed only one transmitting transducer and one receiving transducer, taking advantage of long duration of reception signal that includes multiple linear scattering such as mode conversion and boundary reflections. NEWS technique was then used as a pre-treatment of TR for spatial focusing of reemitted second harmonic signal. The robustness of this approach was demonstrated on a cracked specimen and the nonlinear TR focusing behavior is observed on the crack interface from which the second harmonic signal was originated.
목차
Abstract
1. Introduction
2. Experiments
3. Results and Discussion
4. Conclusions
References
참고문헌 (24)
참고문헌 신청
1. [학술지(정기간행물)] - Kyung-Young Jhang / 2009 / Nonlinear Ultrasonic Techniques for Nondestructive Assessment of Micro Damage in Material: A Review / International Journal of Precision Engineering and Manufacturing 10 (1) : 123 ~ 135
2. [학술지(정기간행물)] - J. M. Richardson / 1979 / Harmonic generation atan unbonded interface - I. Planar interfacebetween semi-infinite elastic media / International Journal of Engineering Science 17 : 73 ~ 85
3. [학술지(정기간행물)] - J. D. Achenbach / 1982 / Lossof specular reflection due to nonlinearcrack-face interaction / Journal of Nondestructive Evaluation 3 : 229 ~ 239
4. [학술지(정기간행물)] - S. Hirose / 1993 / Higherharmonics in the far-field due to dynamiccrack-face contacting / Journal of theAcoustical Society of America 93 : 142 ~ 147
5. [학술지(정기간행물)] - O. Buck / 1978 / Acoustic harmonic generationat unbonded interfaces and fatigue cracks / Applied Physics Letters 33 : 371 ~ 373
2. [학술지(정기간행물)] - J. M. Richardson / 1979 / Harmonic generation atan unbonded interface - I. Planar interfacebetween semi-infinite elastic media / International Journal of Engineering Science 17 : 73 ~ 85
3. [학술지(정기간행물)] - J. D. Achenbach / 1982 / Lossof specular reflection due to nonlinearcrack-face interaction / Journal of Nondestructive Evaluation 3 : 229 ~ 239
4. [학술지(정기간행물)] - S. Hirose / 1993 / Higherharmonics in the far-field due to dynamiccrack-face contacting / Journal of theAcoustical Society of America 93 : 142 ~ 147
5. [학술지(정기간행물)] - O. Buck / 1978 / Acoustic harmonic generationat unbonded interfaces and fatigue cracks / Applied Physics Letters 33 : 371 ~ 373
이 논문의 저자 정보
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0101-2014-500-003271601