SYMPOSIA PAPER Published: 01 January 1984
STP32728S

Chevron-Notch Bend Testing in Glass: Some Experimental Problems

Source

This study describes experimental difficulties in the use of the chevron-notch bend test to determine the plane-strain fracture toughness, KIc, for brittle materials. Four-point flexure tests were performed on soda-lime-silica glass and vitreous silica in both “wet” and “dry” environments and at various loading rates. Results show that an inability to produce stable crack growth in the chevron-notch bend test can lead to serious overestimates of KIc as well as to significant scatter in the data. It is also shown that water enhanced crack growth can reduce the measured value of KIc.

Author Information

Chuck, L
National Bureau of Standards, Washington, D.C.
Fuller, ER
National Bureau of Standards, Washington, D.C.
Freiman, SW
National Bureau of Standards, Washington, D.C.
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Details
Developed by Committee: E08
Pages: 167–175
DOI: 10.1520/STP32728S
ISBN-EB: 978-0-8031-4917-5
ISBN-13: 978-0-8031-0401-3