Bermejo, R*; Supancic, P*; Krautgasser, C*; Morrell, R; Danzer, R* (2013) Subcritical crack growth on low temperature co-fired ceramics under biaxial loading. Eng. Fract. Mech., 100. pp. 108-121.

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Abstract

The subcritical crack growth (SCCG) on Low Temperature Co-fired Ceramics (LTCC) has been evaluated. Different stressing rates (i.e. from 0.01 to 200 MPa/s) and environmental conditions (i.e. from < 2 % to > 98 % relative humidity) have been assessed under biaxial loading using the ball-on-three-balls (B3B) test. Very different strength values (i.e. s0 = 430 MPa in dry environments at high stressing rates and s0 = 240 MPa in high humidity environment at low stressing rates) were ascribed to SCCG effects. The suitability of the B3B test is demonstrated for accurate strength measurements of ceramic materials in different environments.

Item Type:	Article
Keywords:	Ceramics, delayed failure, subcritical crack growth, LTCC
Subjects:	Advanced Materials Advanced Materials > Mechanical Measurement
Identification number/DOI:	10.1016/j.engfracmech.2012.12.004
Last Modified:	02 Feb 2018 13:14
URI:	http://eprintspublications.npl.co.uk/id/eprint/5806

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