Issue 15

I. S 46 Th ope ove Sub Th loc use tips En and 17( nor Eq cas righ cas E F A . Raju et alii, Fr e individual m ning for on- rly conserva strate Defects e fracture me ations and th d in this pap are located try Peak Heati the location b) for the le malized by G . 4 and norm es -2→+1 an t tip becom e -2→+4), th FECT OF V A s menti applica qualitat attura ed Integri ode G value orbit cold is tive. (a) Interface Figure – Effect of D chanics resp en extending er to indicate at Locations ng . To study of the right ft tip and in Ic , and the g alized by G I d -2→+2), t es larger than e left tip nor RIOUS V AR oned previou tion. Some o ively. tà Strutturale, 1 s were also e dominated b defect at craze at varyin 16 : Normaliz efect Length onse for sub the defect a that a subsu A and B, resp “very long” s defect tip is v Fig. 17(c) fo reen dashed c . For the in he left tip is s the normal malized G T e IABLES ON sly, there are f these variab 5 (2011) 35-49 xamined. Th y Mode II an crack Locatio g craze crack l (b ed G T as a fun strate defects long the jogg rface defect e ectively, as i ubstrate defe aried along r the right ti curves repres itial case (i.e table, but th ized G T sugg xceeds the n THE D EFE many variab les are ident ; DOI : 10.3221/I e G II values d indicating n +1 and defo ocations (defo ) Normalized ction of interf is examined le (i.e., chan xists between llustrated in F cts for entry the joggle up p. The blue ent the resis ., case -2→0 e right tip is u esting a retu ormalized R a CT D RIVIN les that cont ified in Fig. 1 GF-ESIS.15.05 are larger tha that the com rmed configu rmation scaled G T . ace defect loca by fixing th ging the defe Location A ig. 17(a). peak heating, to Location curves repre tance to the ), both defec nstable. Fo rn to a stabl nd hence th G F ORCE ribute to the 8, and the ef n the G I valu parison of G rations for int by 20x). tion – On-orb e left tip of t ct size or len and Locatio the left defe +4. The frac sent the tota defect drivin t tips are sta r the case -2→ e region. Fo e left tip beco defect drivin fect of each es, suggestin T to G Ic in F erface defects it cold. he defect at gth). The no n B. The left ct tip is place ture respons l defect driv g force, or R ble. For lon +3, the nor r the “very l mes unstable g force, the G of these varia g that the de ig. 16(b) may different acre tation ‘A→B and right de d at Location e is given in ing force, or , evaluated u ger defects malized R at ong” defect . T value, for bles is discu fect be age ’ is fect -2, Fig. G T , sing (i.e., the (i.e., this ssed