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Effects of specimen thickness on fracture toughness of an aluminum alloy

✍ Scribed by D. T. Read; R. P. Reed

Publisher
Springer Netherlands
Year
1977
Tongue
English
Weight
668 KB
Volume
13
Category
Article
ISSN
1573-2673

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✦ Synopsis

J-integral resistance curves for three specimen thicknesses and valid (according to ASTM Method E 399) K~ values at 76 K are reported for aluminum alloy 2219. The J-integral values were independent of thickness at small crack extensions, but at substantial crack extensions the values for the thin specimens were larger than those for the thick specimens. The measured J,c values were less than those calculated from the measured K~c values. The reason for this discrepancy was that crack extension occurred before the K~ measurement point was reached.

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