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Title: Materials testing using laser energy deposition

Abstract

A convenient method for determining the elastic constants of materials has been devised using the energy from a Q-switched neodymium-glass laser. Stress waves are induced in materials having circular rod or rectangular bar geometries by the absorption of energy from the laser. The wave transit times through the material are recorded with a piezoelectric transducer. Both dilatation and shear wave velocities are determined in a single test using an ultrasonic technique and these velocities are used to calculate the elastic constants of the material. A comparison of the constants determined for ten common engineering materials using this method is made with constants derived using the conventional ultrasonic pulse technique and agreement is shown to be about one percent in most cases. Effects of material geometry are discussed and surface damage to the material caused by laser energy absorption is shown.

Authors:
;
Publication Date:
Research Org.:
California Univ., Livermore (USA). Lawrence Livermore Lab.
OSTI Identifier:
5118837
Report Number(s):
UCRL-80469; CONF-780503-2
TRN: 78-008578
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 24. international instrumentation symposium, Albuquerque, NM, USA, 1 May 1978
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; MATERIALS TESTING; NEODYMIUM LASERS; USES; ELASTICITY; LASER RADIATION; Q-SWITCHING; SHOCK WAVES; STRESSES; WAVE PROPAGATION; ELECTROMAGNETIC RADIATION; LASERS; MECHANICAL PROPERTIES; RADIATIONS; SOLID STATE LASERS; TENSILE PROPERTIES; TESTING; 420500* - Engineering- Materials Testing; 420300 - Engineering- Lasers- (-1989)

Citation Formats

Wilcox, W W, and Calder, C A. Materials testing using laser energy deposition. United States: N. p., 1977. Web.
Wilcox, W W, & Calder, C A. Materials testing using laser energy deposition. United States.
Wilcox, W W, and Calder, C A. 1977. "Materials testing using laser energy deposition". United States. https://www.osti.gov/servlets/purl/5118837.
@article{osti_5118837,
title = {Materials testing using laser energy deposition},
author = {Wilcox, W W and Calder, C A},
abstractNote = {A convenient method for determining the elastic constants of materials has been devised using the energy from a Q-switched neodymium-glass laser. Stress waves are induced in materials having circular rod or rectangular bar geometries by the absorption of energy from the laser. The wave transit times through the material are recorded with a piezoelectric transducer. Both dilatation and shear wave velocities are determined in a single test using an ultrasonic technique and these velocities are used to calculate the elastic constants of the material. A comparison of the constants determined for ten common engineering materials using this method is made with constants derived using the conventional ultrasonic pulse technique and agreement is shown to be about one percent in most cases. Effects of material geometry are discussed and surface damage to the material caused by laser energy absorption is shown.},
doi = {},
url = {https://www.osti.gov/biblio/5118837}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {12}
}

Conference:
Other availability
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