Effect of Loading Rate and Surface Conditions on Flexural Strength of Borosilicate Glass

Journal Article · Thu Jan 01 00:00:00 EST 2009 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1551-2916.2009.03019.x· OSTI ID:1049173

Nie, X ^[1]; Chen, Wayne ^[1]; Wereszczak, Andrew A ^[2]; Templeton, D W ^[3]

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1. Purdue University
2. ORNL
3. U.S. Army RDECOM-TACOM, Warren, MI

This study evaluates the loading rate and surface condition dependence of the flexural strength of a borosilicate glass. The glass specimens are subjected to three different surface treatments before four-point bending tests to study the effect of surface flaws. Quasistatic (Material Test System 810) and dynamic (Kolsky bar) experiments are performed at loading rates ranging from 0.7 to 4 x 10{sup 6} MPa/s. The results show that the flexural strength of the borosilicate glass has a strong dependence on the loading rate. A chemically etched surface produces an enhanced flexural strength by about an order of magnitude. Scanning electron microscopy images on fracture surfaces indicate that the failure is governed by different types of flaws under different surface treatment conditions. Edge failure is also identified for samples possessing high flexural strength.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: Work for Others (WFO)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1049173
• Journal Information: Journal of the American Ceramic Society, Vol. 92, Issue 6; ISSN 0002-7820
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BENDING
BOROSILICATE GLASS
DEFECTS
FLEXURAL STRENGTH
FRACTURES
GLASS
LOADING RATE
SCANNING ELECTRON MICROSCOPY
SURFACE TREATMENTS