caa a22 4500 463221311 CHVBK 20180405153213.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10853-006-1016-5 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1016-5 Smith E. School of Materials, Manchester University, Grosvenor Street, M1 7HS, Manchester, UK aut The effect of flaw shape on fracture initiation at a blunt flaw [Elektronische Daten] [E. Smith] The author is involved in a wide-ranging research programme, the objective being to extend the fracture mechanics methodology for sharp cracks to blunt flaws, so as to take credit for the blunt flaw geometry. The approach is based on the cohesive process zone representation of the micro-mechanistic processes that are associated with fracture. An earlier paper has derived a blunt flaw fracture initiation relation which gives the critical elastic flaw-tip peak stress σpcr (a "signifier” of a critical condition in the process zone) in terms of the process zone material parameters, subject to the proviso that the process zone size s is small compared with the flaw depth (length) and any characteristic dimension other than the flaw root radius ρ. The relation has been derived using a "two-extremes” procedure, whereby the separate σpcr solutions for small and large s/ρ are blended together to give an all-embracing relation that is valid for all s/ρ. A key feature of the relation is that σpcr essentially depends on only one geometrical parameter: the flaw root radius ρ. Though the relation has evolved from a consideration of the characteristics of one model, i.e. that of an elliptical flaw in an infinite solid that is subjected to an applied tensile stress, it is anticipated that the relation can be applied equally well for a wide range of geometrical configurations involving different flaw shapes. It is against this background that the present paper demonstrates that the relation also applies to the behaviour of an intrusion type flaw in the surface of a semi-infinite solid subjected to an applied tensile stress. Springer Science+Business Media, LLC, 2006 Journal of Materials Science Springer US; http://www.springer-ny.com 42/1(2007-01-01), 307-313 0022-2461 42:1<307 2007 42 10853 https://doi.org/10.1007/s10853-006-1016-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1016-5 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Smith E. School of Materials, Manchester University, Grosvenor Street, M1 7HS, Manchester, UK aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/1(2007-01-01), 307-313 0022-2461 42:1<307 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer