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Measurement of shock waves using phase shifting pulsed holographic interferometer |
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| Authors: | Young-June Kang Sung-Hoon Baik Weon-Jae Ryu Koung-Suk Kim |
| Institution: | a School of Mechanical Engineering, Mechatronics Research Center, Chonbuk National University, Duckjin-Dong 1 ga 664-14, Duckjin-Gu, Chonju, Chonbuk 561-756, South Korea b Laboratory for Quantum Optics, Korea Atomic Energy Research Institute, Dukjin-Dong 150, Yusong, Daejon 305-353, South Korea c Department of Mechanical Design, Graduate School, Chonbuk National University, Duckjin-Dong 1 ga 664-14, Duckjin-Gu, Chonju, Chonbuk 561-756, South Korea d Department of Mechanical Design Engineering, Laser Application Research Center, Chosun University, Kwangju 501-759, South Korea |
| Abstract: | A phase shifting pulsed holographic interferometer was applied to the experimental study of the propagation of laser-induced shock waves over metal plates. A double-pulsed ruby laser was used to generate the shock waves and to make a holographic interferogram of the wave fields. The phase shifting method with a dual-reference beam solved the sign ambiguity problem in holographic fringe patterns and allowed a quantitative evaluation of the phase of the interference patterns. The transient surface profile and propagation behavior of the shock wave over plates were investigated from the holographic fringe patterns. |
| Keywords: | Holographic interferometer The phase shifting method Laser-induced shock waves |
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