Finite Element Analysis of an Improved Center Crack Specimen
A new crack specimen called the diagonally loaded square plate (DLSP) containing an angled central crack is analyzed using the finite element method. The stress intensity factors and the T-stress are calculated for the new specimen in the full range from pure mode I to pure mode II. Unlike the conventional center cracked specimen under uniaxial loading, the improved specimen is able to provide pure mode II. It is shown that the effect of non-singular stress component T in the DLSP specimen is not ignorable relative to the singular stress terms, particularly for mode II dominated loading conditions.
L. Garibaldi, C. Surace, K. Holford and W.M. Ostachowicz
M. R. Ayatollahi et al., "Finite Element Analysis of an Improved Center Crack Specimen", Key Engineering Materials, Vol. 347, pp. 441-446, 2007