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Stable Crack Growth in Polycrystalline Magnesia under Monotonic and Cyclic Loads
Author(s) -
Ogawa Takeshi,
LLorca Javier
Publication year - 1994
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.1151-2916.1994.tb07253.x
Subject(s) - materials science , crystallite , composite material , tension (geology) , fracture (geology) , scanning electron microscope , compression (physics) , monotonic function , metallurgy , mathematics , mathematical analysis
The quasi‐static, stable growth of cracks in polycrystalline magnesia under various loading conditions (cyclic compression, monotonic tension, and tension–compression fatigue) was studied. Crack length was monitored continuously through a conductive film attached to the specimen surface. The fracture surfaces and the crack path were examined by scanning electron microscopy. The different fracture mechanisms responsible for the observed stable crack growth in each loading condition are discussed.