Extension of Measurable Region of Object Vibration Phasor in Phase-Modulated TV Holographic Interferometry: Experiment
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概要
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In this paper, we present an experiment based on the previously reported theory concerning the extension of the measurable region of object vibration phasor in phase-modulated TV holographic interferometry. This theory is based on the following facts: (1) the modulation of speckle interference image is proportional to the Bessel function, (2) its argument indicates the distance between the phasors of phase modulation and object vibration in the complex plane, and (3) the modulation increases as the Bessel function argument approaches zero. The phase modulation phasor is scanned, and at each pixel, one seeks the phase modulation phasor producing the maximum modulation. From the modulations produced by four phase modulation phasors adjacent to the sought phase modulation phasor, the object vibration phasor can be calculated. We analyzed the vibration of a phosphor-bronze rectangular plate with free sides, which were vibrated at the center by a piezoelectric transducer (PZT). Twenty-one phase modulation phasors were employed. The results of measurement were presented, and it was confirmed that the object vibration phasor can be measured in the wider region based on the theory concerning the extension of the measurable region.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-03-15
著者
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Kojima Kentaro
Department Of Mechanical Systems Engineering Faculty Of Engineering Kanazawa University
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Nojima Ken
Department Of Mechanical Systems Engineering Faculty Of Engineering Kanazawa University
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Yamamoto Hirotaka
Department Of Applied Biological Chemistry Faculty Of Agriculture Niigata University
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Miyazaki Takeshi
Department Of Materials Science And Technology Nagaoka University Of Technology
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Yamamoto Hirotaka
Department of Mechanical Systems Engineering, Faculty of Engineering, Kanazawa University, Kodatsuno, Kanazawa 920-8667, Japan
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Nojima Ken
Department of Mechanical Systems Engineering, Faculty of Engineering, Kanazawa University, Kodatsuno, Kanazawa 920-8667, Japan
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Kojima Kentaro
Department of Mechanical Systems Engineering, Faculty of Engineering, Kanazawa University, Kodatsuno, Kanazawa 920-8667, Japan
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Sasaki Yasuhito
Department of Mechanical Systems Engineering, Faculty of Engineering, Kanazawa University, Kodatsuno, Kanazawa 920-8667, Japan
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Miyazaki Takeshi
Department of Mechanical Systems Engineering, Faculty of Engineering, Kanazawa University, Kodatsuno, Kanazawa 920-8667, Japan
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Miyazaki Takeshi
Department of Applied Chemistry, Faculty of Engineering, Osaka University
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