Application of high-speed holographic microscopy to study rapid crack propagation

Shinichi Suzuki; Yousuke Kanahashi; Ryuuichi Nakagami

doi:10.1117/12.273369

28 May 1997 Application of high-speed holographic microscopy to study rapid crack propagation

Shinichi Suzuki, Yousuke Kanahashi, Ryuuichi Nakagami

Proceedings Volume 2869, 22nd International Congress on High-Speed Photography and Photonics; (1997) https://doi.org/10.1117/12.273369
Event: 22nd International Congress on High-Speed Photography and Photonics, 1996, Santa Fe, NM, United States

Abstract

A method of angle-multiplexing holography is applied to develop high-speed holographic microscopy, which can take three successive photographs of a fast propagating crack. The crack speed is at several hundred m/sec. The optical system for holographic recording has three pulsed ruby lasers as light sources. When the crack is propagating in the observation area in a plate specimen, the three ruby lasers oscillate successively. The time interval of the laser oscillation is about 1 microsecond or longer. Varying the angle of incidence of reference beams, the optical system records the crack as three holograms which are superimposed on a holographic plate. Illuminated with a He- Ne laser beam, the three holograms reconstruct for three crack images. Lens assisted holography with spatial filters are utilized to reconstruct the three crack images separately. The spatial resolution of the reconstructed images is more than 120 lines/mm. Along a crack, one can measure the crack opening displacement (COD), that is of the order of ten microns. The dynamic stress intensity factor can be obtained from the COD measurement. The high-speed holographic microscopy is useful to study the rapid fracture phenomena in microseconds.

Citation Download Citation

Shinichi Suzuki, Yousuke Kanahashi, and Ryuuichi Nakagami "Application of high-speed holographic microscopy to study rapid crack propagation", Proc. SPIE 2869, 22nd International Congress on High-Speed Photography and Photonics, (28 May 1997); https://doi.org/10.1117/12.273369

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available