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Title: Confocal detection of Rayleigh scattering for residual stress measurement in chemically tempered glass

Abstract

A new optical method is presented for evaluation of the stress profile in chemically tempered (chemically strengthened) glass based on confocal detection of scattered laser beam. Theoretically, a lateral resolution of 0.2 μm and a depth resolution of 0.6 μm could be achieved by using a confocal microscope with high-NA immersion objective. The stress profile in the 250 μm thick surface layer of chemically tempered lithium aluminosilicate glass was measured with a high spatial resolution to illustrate the capability of the method. The confocal method is validated using transmission photoelastic and Na{sup +} ion concentration profile measurement. Compositional influence on the stress-optic coefficient is calculated and discussed. Our method opens up new possibilities for three-dimensional scattered light tomography of mechanical imaging in birefringent materials.

Authors:
; ; ; ;  [1];  [2]
  1. Institute of Physics, University of Tartu, Wilhelm Ostwald st., Tartu 50411 (Estonia)
  2. Nippon Electric Glass Co., 7-1 Seiran 2-chome, Otsu-shi, Shiga 520-8639 (Japan)
Publication Date:
OSTI Identifier:
22493083
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 118; Journal Issue: 24; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABUNDANCE; BIOMEDICAL RADIOGRAPHY; GLASS; LASER RADIATION; LAYERS; LITHIUM COMPOUNDS; MICROSCOPES; RAYLEIGH SCATTERING; RESIDUAL STRESSES; SODIUM IONS; SPATIAL RESOLUTION; THREE-DIMENSIONAL CALCULATIONS; TOMOGRAPHY

Citation Formats

Hödemann, S., E-mail: siim.hodemann@ut.ee, Möls, P., Kiisk, V., Saar, R., Kikas, J., and Murata, T. Confocal detection of Rayleigh scattering for residual stress measurement in chemically tempered glass. United States: N. p., 2015. Web. doi:10.1063/1.4938200.
Hödemann, S., E-mail: siim.hodemann@ut.ee, Möls, P., Kiisk, V., Saar, R., Kikas, J., & Murata, T. Confocal detection of Rayleigh scattering for residual stress measurement in chemically tempered glass. United States. doi:10.1063/1.4938200.
Hödemann, S., E-mail: siim.hodemann@ut.ee, Möls, P., Kiisk, V., Saar, R., Kikas, J., and Murata, T. Mon . "Confocal detection of Rayleigh scattering for residual stress measurement in chemically tempered glass". United States. doi:10.1063/1.4938200.
@article{osti_22493083,
title = {Confocal detection of Rayleigh scattering for residual stress measurement in chemically tempered glass},
author = {Hödemann, S., E-mail: siim.hodemann@ut.ee and Möls, P. and Kiisk, V. and Saar, R. and Kikas, J. and Murata, T.},
abstractNote = {A new optical method is presented for evaluation of the stress profile in chemically tempered (chemically strengthened) glass based on confocal detection of scattered laser beam. Theoretically, a lateral resolution of 0.2 μm and a depth resolution of 0.6 μm could be achieved by using a confocal microscope with high-NA immersion objective. The stress profile in the 250 μm thick surface layer of chemically tempered lithium aluminosilicate glass was measured with a high spatial resolution to illustrate the capability of the method. The confocal method is validated using transmission photoelastic and Na{sup +} ion concentration profile measurement. Compositional influence on the stress-optic coefficient is calculated and discussed. Our method opens up new possibilities for three-dimensional scattered light tomography of mechanical imaging in birefringent materials.},
doi = {10.1063/1.4938200},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 24,
volume = 118,
place = {United States},
year = {2015},
month = {12}
}