| 학회 |
한국고분자학회 |
| 학술대회 |
2003년 봄 (04/11 ~ 04/12, 연세대학교) |
| 권호 |
28권 1호, p.340 |
| 발표분야 |
의료용 고분자 부문위원회 |
| 제목 |
Comparison of Sensitivity of PVDF and Copolymer-PVDF Sensors by Single Fiber Composites using Fragmentation Test and Acoustic Emission |
| 초록 |
Conventional piezoelectric lead-zirconate-titanate (PZT) senor has high sensitivity, but it is brittle. Recently polymer films such as polyvinylidene fluoride (PVDF) and copolymer-PVDF have been used use as a sensor. The advantages of PVDF are the flexibility and mechanical toughness. Simple embedding process and possible several shapes are also additional advantages. In this study, the sensitivity for single fiber reinforced epoxy composite with PVDF and copolymer-PVDF sensors was investigated using fragmentation test and acoustic emission (AE). AE parameters such as AE energy and amplitude for fiber fracture detected by PVDF sensor were compared to copolymer-PVDF sensor case relating to their thermal and mechanical properties, and then they were correlated with PZT sensor. For both PVDF and copolymer-PVDF sensors, AE energy and amplitude were lower than PZT sensor case due to their dissipation of elastic wave. Sensitivity of PVDF sensor for fiber fracture was almost same as copolymer-PVDF sensor, whereas AE energy and amplitude was rather higher in PVDF sensor. Acknowledgement: This study was supported financially by KOSEF through the ReCAPT, GNU. |
| 저자 |
조종수;박인규;김태희;최윤재;김수일;나재운;T. Akaike |
| 소속 |
서울대 농생명공학부;서울대 농생명공학부;서울대 농생명공학부;서울대 농생명공학부;서울대 농생명공학부;순천대 고분자공학과;Department of Biomolecular Engineering |
| 키워드 |
copolymer-PVDF sensor; sensitivity; fragmentation test; acoustic emission
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| E-Mail |
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