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Strength and Absorbed Energy in Instrumented Impact Tests of Al 2 O 3
Author(s) -
BERTOLTTI RAYMOND L.
Publication year - 1974
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1974.tb10905.x
Subject(s) - charpy impact test , brittleness , materials science , flexural strength , composite material , izod impact strength test , impact energy , instrumentation (computer programming) , fracture (geology) , ultimate tensile strength , computer science , operating system
By use of strain‐gage instrumentation to record impact loads as a function of time, the flexural strength at high strain rates and the energy absorbed in Charpy impact fracture of an alumina were measured. The energy absorption by Al 2 O 3 impact specimens is shown to result principally from elastic mechanical loading. Extraneous energy losses in the Charpy test can easily exceed the magnitude of this mechanical specimen‐loading energy and are shown to be inherent sources of error in impact testing of brittle materials.