000001705 001__ 1705
000001705 005__ 20141118153457.0
000001705 04107 $$acze
000001705 046__ $$k2007-05-14
000001705 100__ $$aSeitl, S.
000001705 24500 $$aEVALUATION OF NOTCH GEOMETRY EFFECT ON BEHAVIOUR OF FRACTURE TOUGHNESS TESTING SPECIMEN

000001705 24630 $$n13$$pEngineering Mechanics 2007
000001705 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Prague
000001705 506__ $$arestricted
000001705 520__ $$2eng$$aThe basic fracture properties of cement-based composite are ascertained on the basis of test evaluations of the specimens in suitable test configurations. Three-point bending specimens with a central starting notch are the most frequently used specimens for laboratory testing. Through models of equivalent elastic cracks the critical crack length and effective fracture toughness (or toughness) can be calculated. The influence of the geometry of the starting notch in a three-point bend specimen on the resulting values of critical applied force and fracture toughness is studied in this paper. To this end, a crack initiation at the notch tip is numerically simulated. It is shown that the values of fracture toughness obtained for specimens with larger widths of starting notch can be overestimated.

000001705 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000001705 653__ $$a

000001705 7112_ $$aEngineering Mechanics 2007$$cSvratka (CZ)$$d2007-05-14 / 2007-05-17$$gEM2007
000001705 720__ $$aSeitl, S.$$iKnésl, Z.$$iKeršner, Z.$$iKlusák, J.
000001705 8560_ $$ffischerc@itam.cas.cz
000001705 8564_ $$s481898$$uhttps://invenio.itam.cas.cz/record/1705/files/120-Seitl-PT.pdf$$y
             Original version of the author's contribution as presented on CD, .
            
000001705 962__ $$r1585
000001705 980__ $$aPAPER