SYMPOSIA PAPER Published: 01 January 1956

The Effect of Speed of Testing on Glass


There are a number of time-dependent processes which occur in glass which affect testing procedures. In this review two of these processes of particular importance are discussed—the structural changes of importance at annealing temperatures and the surface effects giving rise to delayed fracture at ordinary temperatures. The experimental evidence, which indicates that this latter effect is caused by the slow growth of microscopic surface cracks, is also reviewed.

Author Information

Ritland, H., N.
Corning Glass Works, Corning, N. Y.
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Developed by Committee: E01
Pages: 19–29
DOI: 10.1520/STP46840S
ISBN-EB: 978-0-8031-6918-0
ISBN-13: 978-0-8031-6541-0