caa a22 4500 465740278 CHVBK 20180323111807.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF00012548 doi (NATIONALLICENCE)springer-10.1007/BF00012548 Schoeck G. Institute for Solid State Physics, University of Vienna, Boltzmanngasse 5, A-1090, Wien, Austria aut Thermally activated crack-propagation in brittle materials [Elektronische Daten] [G. Schoeck] Under completely brittle conditions a crack can only be stabilized by lattice trapping. The crack rate à in vacuo is then controlled by the rupture of individual bonds at the crack tip with the aid of thermal activation. A careful thermodynamic analysis shows that the thermodynamic activation area is somewhat larger but comparable in magnitude to the atomistic activation area (i.e., the area by which the crack advances in each activation event). By plotting the experimental results in à vs K 2 (K = stress intensity factor) it is possible to derive the activation area from the slope of the curve and hence to determine whether brittle conditions can prevail. Kluwer Academic Publishers, 1990 International Journal of Fracture Kluwer Academic Publishers 44/1(1990-07-01), 1-14 0376-9429 44:1<1 1990 44 10704 https://doi.org/10.1007/BF00012548 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00012548 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Schoeck G. Institute for Solid State Physics, University of Vienna, Boltzmanngasse 5, A-1090, Wien, Austria aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 44/1(1990-07-01), 1-14 0376-9429 44:1<1 1990 44 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer