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Grooving and Off‐Center Crack Effects on Applied‐Moment Double‐Cantilever‐Beam Tests
Author(s) -
Wu Carl Cm.,
McKinney Karl R.,
Lewis David
Publication year - 1984
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.1151-2916.1984.tb19184.x
Subject(s) - cantilever , groove (engineering) , materials science , moment (physics) , cracking , fracture toughness , beam (structure) , center (category theory) , structural engineering , fracture mechanics , composite material , physics , metallurgy , crystallography , chemistry , classical mechanics , engineering
Calculations of fracture toughness (K IC ) from the applied‐moment double‐cantilever‐beam test have assumed negligible groove effects and crack propagation along the center of the specimen. A rigorous analysis is presented, and procedures for routine measurements are suggested to correct for both the presence of the groove and off‐center cracking. For a typical specimen, neglect of these factors results in ≥10% error. The corrections introduced allow results to be obtained from miniaturized specimens.