Laser metrological measurement of transient strain fields in Hopkinson-bar experiments

Dietmar Vogel; Bernd Michel; Werner F. Totzauer; Ulrich Schreppel; Rainer Clos

doi:10.1117/12.49546

1 December 1991 Laser metrological measurement of transient strain fields in Hopkinson-bar experiments

Dietmar Vogel, Bernd Michel, Werner F. Totzauer, Ulrich Schreppel, Rainer Clos

Proceedings Volume 1554, Second International Conference on Photomechanics and Speckle Metrology; (1991) https://doi.org/10.1117/12.49546
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

Often the direct experimental analysis of deformation fields on crack specimens is a necessary tool accompanying the application of modern fracture mechanics concepts. A speckle photographic technique for the measurement of in-plane displacement fields and respective elements of the distortion tensor on crack specimen surfaces has been developed which includes automatic specklegram evaluation by means of digital image processing. Short Q-switch pulses of a ruby laser permit to freeze specklegrams from solid state waves travelling through crack specimens. Mode I crack opening strain fields on impact loaded specimens have been measured and compared with theoretic results.

Citation Download Citation

Dietmar Vogel, Bernd Michel, Werner F. Totzauer, Ulrich Schreppel, and Rainer Clos "Laser metrological measurement of transient strain fields in Hopkinson-bar experiments", Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); https://doi.org/10.1117/12.49546

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