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.
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초록· 키워드
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An epoxy coating applied to the concrete surface of a containment building deteriorates in hazardous environments such as those containing radiation, heat, and moisture. Unlike metals, the epoxy coating on a concrete liner absorbs and discharges moisture during the degradations process, so it has a different density and volume during service. In this study, acoustic impedance was adopted for characterizing the degradation of a glass-reinforced epoxy coating using the acoustic reflection coefficient (reflectance) on a rough epoxy coating. For estimating the acoustic reflectance on a wavy epoxy coating surface, a probabilistic model was developed to represent the multiple irregular reflections of the acoustic wave from the wavy surface on the basis of the simulated annealing technique. A number of epoxy-coated concrete specimens were prepared and exposed to accelerated aging conditions to induce an artificial aging degradation in them. The acoustic impedance of the degraded epoxy coating was estimated successfully by minimizing the error between a waveform calculated from the mathematical model and a waveform measured from the surface of the rough coating.
목차
Abstract
1. Introduction
2. Statistic Model of Acoustic Reflection on a Wavy Epoxy Surface
3. Evaluation of Acoustic Impedance Using SA Method
4. Specimen of Glass-Reinforced Epoxy Coating
5. Accelerated Aging Test of Epoxy Coating
6. Experimental Results
7. Conclusions
References
참고문헌 (7)
참고문헌 신청
1. [학술지(정기간행물)] - 나환선 / 2003 / 부착력과 임피던스를 이용한 에폭시 도장재 열화 특성에 관한 실험적 평가 / 한국구조물진단유지관리공학회 논문집 7 (2) : 6 ~ 158
2. [학술대회논문] - N. Kim. / 2004 / Ultrasonic evaluation of epoxy coating in nuclear power plant / Material Science Forum 449- 452 : 1209 ~ 1212
3. [학술지(정기간행물)] - M. Frigione. / 2000 / Nondestructive and in-situ monitoring of mechanical property buildup in epoxy adhesives for civil applications by propagation of ultrasonic waves / Ploymer Engineering and Science 40 (3) : 656 ~ 664
4. [학술지(정기간행물)] - N. Kim. / 2006 / Characterization of material degradation in epoxy film based on scanning acoustic microscopy(SAM) / Key Engineering Materials 321-323 : 578 ~ 581
5. [학술대회논문] - N. Kim. / 2003 / A new technique for ultrasonic thickness measurement of thin film / Japan and Korea Joint Workshop on Advanced Semiconductor Processing and Equipments : 136 ~ 141
2. [학술대회논문] - N. Kim. / 2004 / Ultrasonic evaluation of epoxy coating in nuclear power plant / Material Science Forum 449- 452 : 1209 ~ 1212
3. [학술지(정기간행물)] - M. Frigione. / 2000 / Nondestructive and in-situ monitoring of mechanical property buildup in epoxy adhesives for civil applications by propagation of ultrasonic waves / Ploymer Engineering and Science 40 (3) : 656 ~ 664
4. [학술지(정기간행물)] - N. Kim. / 2006 / Characterization of material degradation in epoxy film based on scanning acoustic microscopy(SAM) / Key Engineering Materials 321-323 : 578 ~ 581
5. [학술대회논문] - N. Kim. / 2003 / A new technique for ultrasonic thickness measurement of thin film / Japan and Korea Joint Workshop on Advanced Semiconductor Processing and Equipments : 136 ~ 141
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UCI(KEPA) : I410-ECN-0101-2015-500-001546903