Strain energy density to assess mode II fracture in U-notched disk-type graphite plates

Abstract

The brittle fracture criterion, namely the strain energy density (SED) over a control volume, which embraces the notch edge, is utilized in the present research to assess the experimentally obtained fracture loads of several U-notched Brazilian disk (UNBD) specimens made of a type of commercial graphite under pure mode II loading. The results show that the SED criterion could successfully predict the fracture loads of graphite specimens for different notch tip radii with an average discrepancy of about ±10%. It is proved in this investigation that not only the SED criterion works well on brittle fracture of notched graphite components under pure mode I, mixed mode I/II and pure mode III loading conditions, but also under pure mode II loading

Theoretical and experimental investigation of brittle fracture in V-notched PMMA specimens under compressive loading

“…For example, the following publications can be quoted under (i) pure mode I loading [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]; (ii) mixed mode I/II loading ; (iii) pure mode II loading [39][40][41]; and (iv) mode III and mixed mode I/III loadings [42][43][44]. Most of the investigations carried out in the context of brittle fracture of notched components have been quoted in two valuable review papers [45,46].…”

Fracture analysis of dissimilar Al‐Al friction stir welded joints under tensile/shear loading

“…At the end of this section, it is necessary to highlight that there are some well‐known brittle fracture criteria other than MTS and MS criteria, eg, the SED criterion, which can be potentially linked to EMC for ductile failure prediction of the FSWed CSCB specimens tested. Such a statement comes from this fact that SED performance in predicting static and fatigue failures of notched weldments has been well demonstrated .…”

Fracture assessment of VO-notches under mode II loading: Experiments and theories

“…[50] have been more recently predicted in Ref. [51] using the SED criterion. Note that mode II brittle fracture in sharp and blunt V-notches has been previously investigated in Ref.…”