High-speed holographic microscopy for fast-propagating cracks in transparent materials.

High-speed holographic microscopy for fast-propagating cracks in transparent materials. Research Abstract Details 

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High-speed holographic microscopy for fast-propagating cracks in transparent materials. Abstract Text:

S Suzuki,Y Nozaki,H Kimura,

A method of high-speed holographic microscopy is developed to take three successive microscopic photographs of a crack tip propagating in a transparent poly(methyl methacrylate) specimen at a speed of several hundred meters per second. When a crack is propagating in a specimen, three Q-switched ruby lasers emit three laser pulses successively. The time interval between each laser pulse and the next is 1 mus or longer. An optical system of angle-multiplexing holography records the crack as three successive holograms on one photographic plate. Crack images are reconstructed and photographed through a conventional microscope. The spatial resolution of the reconstructed images is approximately 114 lines/mm. From the photographs, one can measure crack speed, crack opening displacement, and the dynamic stress intensity factor. The high-speed holographic microscopy makes it possible to study rapid crack propagation in microseconds.

High-speed holographic microscopy for fast-propagating cracks in transparent materials. Publishing Authors By Initials

S Suzuki,Y Nozaki,H Kimura,

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High-speed holographic microscopy for fast-propagating cracks in transparent materials. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Applied optics

VOLUME: 36

Page Numbers: 7224-33

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ISSN: 0003-6935

DAY: 1

MONTH: Oct

YEAR: 1997

High-speed holographic microscopy for fast-propagating cracks in transparent materials. Information

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LANGUAGE: eng

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Country: United States

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MEDLINETA: Appl Opt

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