Premium
Elastic‐Plastic Contact Damage in a Lead Lanthanum Zirconate Titanate
Author(s) -
PRICE JAMES J.,
VARNER JAMES R.
Publication year - 1986
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.1151-2916.1986.tb07467.x
Subject(s) - materials science , lead zirconate titanate , composite material , lanthanum , cracking , titanate , lead (geology) , contact mechanics , fracture (geology) , finite element method , structural engineering , ceramic , ferroelectricity , dielectric , inorganic chemistry , chemistry , optoelectronics , engineering , geomorphology , geology
Spherical indenters were used to produce elastic‐plastic contact damage in a lead lanthanum zirconate titanate (PLZT) under conditions of quasi‐static and impact loading. The extent of radial cracking produced under both loading conditions showed good correlation with the response predicted by an earlier fracture mechanics analysis for quasi‐static conditions. Calculated radial crack lengths corresponding to conditions of impact loading exhibited excellent agreement with experimentally measured values. The dynamic hardness of the PLZT was determined to be ∼ 1.5 times the quasi‐static hardness. Differences in the radial crack lengths produced under the two loading conditions were attributed primarily to this difference in hardness response.