A Study on the Vibration Characteristics of CFRP Composite Materials using Time-Average ESPI

Cho, C.-W.; DACC Co., 2-824 Palbok-Dong, Deokjin-Gu, Jeonju-Si, Jeollabuk-Do, 561-844 Republic Of Korea, Kim, S.-J.; Chonbuk National Uni., 567 Baekje-Daero, Deokjin-Gu, Jeonju-Si, Jeollabuk-Do, 561-756 Republic Of Korea, Choi, I.-Y.; Chonbuk National Uni., 567 Baekje-Daero, Deokjin-Gu, Jeonju-Si, Jeollabuk-Do, 561-756 Republic Of Korea, Hong, K.-M.; Chonbuk National Uni., 567 Baekje-Daero, Deokjin-Gu, Jeonju-Si, Jeollabuk-Do, 561-756 Republic Of Korea, Park, J.-H.; DACC Co., 2-824 Palbok-Dong, Deokjin-Gu, Jeonju-Si, Jeollabuk-Do, 561-844 Republic Of Korea, Kang, Y.-J.; Chonbuk National Uni., 567 Baekje-Daero, Deokjin-Gu, Jeonju-Si, Jeollabuk-Do, 561-756 Republic Of Korea & Kim, A.; Chonbuk National Uni., 567 Baekje-Daero, Deokjin-Gu, Jeonju-Si, Jeollabuk-Do, 561-756 Republic Of Korea
The ESPI (Electronic Speckle PatternInterferometry) is a real-time, full-field, nondestructiveoptical measurement technique. In thisstudy, ESPI was proposed for the purpose ofvibration analysis for new and composite materials.Composite materials have various complicatedcharacteristics according to the materials,orientations, and the stacking sequences of the plyand boundary conditions. Therefore, it is difficult toanalyze composite materials. For efficient use ofcomposite materials in engineering applications thedynamic behavior (i.e., natural frequencies andnodal patterns) should be known. With the use ofTime-Average ESPI, one...