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Evaluation of Fracture Toughness for Ceramic Materials by a Single‐Edge‐Precracked‐Beam Method
Author(s) -
NOSE TETSURO,
FUJII TOSHIMITSU
Publication year - 1988
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.1151-2916.1988.tb05049.x
Subject(s) - materials science , ceramic , fracture toughness , composite material , beam (structure) , enhanced data rates for gsm evolution , fracture (geology) , structural engineering , telecommunications , computer science , engineering
As a substitute for the fatigue‐cracked‐beam method prescribed in ASTM E399 A2, a recently devised precracking method was applied to the evaluation of fracture toughness of ceramic materials. Straight‐through precracks proved to be easily introduced into rectangular beams of several ceramic materials. This method gives K ic values almost identical with those of the fatigue‐cracked‐beam method. The K ic values are almost constant over wide ranges of the pop‐in precrack length and the loading rate of the three‐point bend test. The test can be easily performed even at elevated temperatures although its validity should be further examined.