caa a22 4500 469089318 CHVBK 20180323133012.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF00777224 doi (NATIONALLICENCE)springer-10.1007/BF00777224 Zavada V. Institute of Strength Problems, Academy of Sciences of the Ukraine, Kiev aut Construction of R-curves for ceramics [Elektronische Daten] [V. Zavada] A method of investigating R-curves in ceramics is described and results of testing it are given. Nonlinearity and hysteresis in the load-deflection diagram and residual deflection of specimens after their unloading were detected for specimens with a crack. It is suggested that friction between walls of the crack is the cause of this. A model is proposed for estimation and consideration of the effect of frictional forces when determining crack resistance. Plenum Publishing Corporation, 1992 Strength of Materials Kluwer Academic Publishers-Plenum Publishers 24/1(1992-01-01), 44-51 0039-2316 24:1<44 1992 24 11223 https://doi.org/10.1007/BF00777224 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00777224 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Zavada V. Institute of Strength Problems, Academy of Sciences of the Ukraine, Kiev aut NATIONALLICENCE 773 0- Strength of Materials Kluwer Academic Publishers-Plenum Publishers 24/1(1992-01-01), 44-51 0039-2316 24:1<44 1992 24 11223 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer