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NDE of Low-velocity Impact Damages in Composite Laminates using ESPI, Digital Shearography and Ultrasound C-scan Techniques
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  • NDE of Low-velocity Impact Damages in Composite Laminates using ESPI, Digital Shearography and Ultrasound C-scan Techniques
  • NDE of Low-velocity Impact Damages in Composite Laminates using ESPI, Digital Shearography and Ultrasound C-scan Techniques
저자명
Kim. Ghi-Seok,Hong. Soon-Sung,Jhang. Kyung-Young,Kim. Geon-Hee
간행물명
International journal of precision engineering and manufacturing
권/호정보
2012년|13권 6호|pp.869-876 (8 pages)
발행정보
한국정밀공학회
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정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

In this paper, the low-velocity impact damage in composite laminates was investigated by three NDE (Non-destructive Evaluation) techniques, Electronic Speckle Pattern Interferometry (ESPI), digital shearography and ultrasound C-scan. The objective of this study is to evaluate the detection performance of each NDE technique against low-velocity impact damage in fiber glass composite laminates when the specimen was inspected from front surface (impact side) which may be available in depot level. Unidirection and crossply fiber glass composite laminates were impact damaged with four energy levels (5, 10, 15, 18 J) by drop weight impact machine. The results showed that ESPI and digital shearography techniques were able to identify the barely visible low-velocity impact damage. However, some limitations for detection depth were found in ESPI and digital shearography because the impact damage on reverse side was rarely detected by them. Nonetheless, ESPI and digital shearography techniques were estimated as one of useful NDE methods embedded with improved post processings including image process and optimal calibration method for different excitations.