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
Vibration monitoring is required for reliable thermosonic testing to decide whether sufficient vibration is achieved in each test for the detection of cracks. From a practical point of view, a cheaper and convenient monitoring method is better for the application to real tests. Therefore, the performance of different sensors for vibration monitoring was investigated and compared in this study to find a convenient and acceptable measurement method for thermosonics. Velocity measured by a laser vibrometer and strain provide an equivalent HI when measured at the same position. The microphone can provide a cheaper vibration monitoring device than the laser and the heating index calculated by a microphone signal shows similar characteristics to that calculated from velocity measured by the laser vibrometer. The microphone frequency response shows that it underestimates high frequency components but it is applicable to practical tests because it gives a conservative value of HI.
목차
Abstract
1. Introduction
2. Experiments
3. Results and Discussions
4. Conclusions
References
참고문헌 (14)
참고문헌 신청
1. [학술대회논문] - M. Imregun / 1990 / Natural frequency and damping changes produced by fatigue cracks / Proceedings of the 15th Seminar on Modal Analysis : 791 ~ 805
2. [단행본] - C. F. Beards / 1996 / Structural vibration: analysis and damping / Arnold
3. [학술지(정기간행물)] - A. P. Bovsunovsky / 2005 / Considerations regarding superharmonic vibrations of a cracked beam and the variation in damping caused by the presence of the crack / Journal of Sound and Vibration 288 (4) : 865 ~ 886
4. [학위논문] - M. Morbidini / 2007 / A comparison of the vibration-modulation and thermosonic ndt techniques / 박사 / Imperial College, University of London
5. [학술지(정기간행물)] - M. Morbidini / 2006 / Prediction of the thermosonic signal from fatigue cracks in metals using vibration damping measurements / Journal of Applied Physics 100 (10) : 1 ~ 13
2. [단행본] - C. F. Beards / 1996 / Structural vibration: analysis and damping / Arnold
3. [학술지(정기간행물)] - A. P. Bovsunovsky / 2005 / Considerations regarding superharmonic vibrations of a cracked beam and the variation in damping caused by the presence of the crack / Journal of Sound and Vibration 288 (4) : 865 ~ 886
4. [학위논문] - M. Morbidini / 2007 / A comparison of the vibration-modulation and thermosonic ndt techniques / 박사 / Imperial College, University of London
5. [학술지(정기간행물)] - M. Morbidini / 2006 / Prediction of the thermosonic signal from fatigue cracks in metals using vibration damping measurements / Journal of Applied Physics 100 (10) : 1 ~ 13
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UCI(KEPA) : I410-ECN-0101-2014-500-003259909