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Title: Lifetime prediction of laser-precracked fused silica subjected to subsequent cyclic laser pulses

Abstract

Measurements of fatigue failure strength of laser-cracked fused silica in air at room temperature for different numbers of laser shots and laser fluences are presented. The failure-strength variability is found to be due mainly to the spectrum of crack depths. Agreement with theory suggests the incorporation of a residual term into the failure-strength equation. Due to its sign, the residual stress is of mouth-opening displacement nature at the crack. Analysis of the residual stress data shows a linear proportionality with crack depth, whereas the failure-strength is inversely proportional to the square root of the crack depth. (c) 2000 Materials Research Society.

Authors:
 [1];  [2];  [1];  [3];  [2]
  1. Laboratory for Laser Energetics and Department of Mechanical Engineering, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)
  2. Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)
  3. Department of Mechanical Engineering, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)
Publication Date:
OSTI Identifier:
20216864
Resource Type:
Journal Article
Journal Name:
Journal of Materials Research
Additional Journal Information:
Journal Volume: 15; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0884-2914
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PHYSICAL RADIATION EFFECTS; LASER TARGETS; CRACKS; RESIDUAL STRESSES; THERMAL FATIGUE; FRACTURE PROPERTIES; EXPERIMENTAL DATA; THEORETICAL DATA

Citation Formats

Dahmani, Faiz, Schmid, Ansgar W., Lambropoulos, John C., Burns, Stephen J., and Papernov, Semyon. Lifetime prediction of laser-precracked fused silica subjected to subsequent cyclic laser pulses. United States: N. p., 2000. Web. doi:10.1557/JMR.2000.0167.
Dahmani, Faiz, Schmid, Ansgar W., Lambropoulos, John C., Burns, Stephen J., & Papernov, Semyon. Lifetime prediction of laser-precracked fused silica subjected to subsequent cyclic laser pulses. United States. doi:10.1557/JMR.2000.0167.
Dahmani, Faiz, Schmid, Ansgar W., Lambropoulos, John C., Burns, Stephen J., and Papernov, Semyon. Mon . "Lifetime prediction of laser-precracked fused silica subjected to subsequent cyclic laser pulses". United States. doi:10.1557/JMR.2000.0167.
@article{osti_20216864,
title = {Lifetime prediction of laser-precracked fused silica subjected to subsequent cyclic laser pulses},
author = {Dahmani, Faiz and Schmid, Ansgar W. and Lambropoulos, John C. and Burns, Stephen J. and Papernov, Semyon},
abstractNote = {Measurements of fatigue failure strength of laser-cracked fused silica in air at room temperature for different numbers of laser shots and laser fluences are presented. The failure-strength variability is found to be due mainly to the spectrum of crack depths. Agreement with theory suggests the incorporation of a residual term into the failure-strength equation. Due to its sign, the residual stress is of mouth-opening displacement nature at the crack. Analysis of the residual stress data shows a linear proportionality with crack depth, whereas the failure-strength is inversely proportional to the square root of the crack depth. (c) 2000 Materials Research Society.},
doi = {10.1557/JMR.2000.0167},
journal = {Journal of Materials Research},
issn = {0884-2914},
number = 5,
volume = 15,
place = {United States},
year = {2000},
month = {5}
}