caa a22 4500 467947198 CHVBK 20180322200725.0 cr unu---uuuuu 170328e19861101xx s 000 0 eng 10.1007/BF00553447 doi (NATIONALLICENCE)springer-10.1007/BF00553447 (NATIONALLICENCE)springer-10.1007/BF02431630 The J-integral as a fracture criterion for polycarbonate thermoplastic [Elektronische Daten] [R. Singh, K. Parihar] Fracture behaviour of a polycarbonate thermoplastic has been investigated. Fracture tests were conducted on single edge notched specimens and the J-integral evaluated using energy rate interpretation. Its value has been found to be independent of crack length when crack length to specimen width (a/w) is larger than 0.34. For smaller cracks general material damage away from the crack tip is also found to influence the energy absorbed. An extrapolation method has been used to separate the crack tip energy from the energy absorbed due to general material damage. The J-integral thus obtained is independent of crack length and specimen length and its critical value is the same as obtained fora/w > 0.34 without extrapolation. The critical stress intensity factor was also evaluated using the R-curve approach. It has been found that the J-integral agrees well with the criticial stress intensity factor obtained using the R-curve approach. Chapman and Hall Ltd., 1986 Singh R. Defence Materials and Stores Research and Development Establishment, 208 013, Kanpur, India aut Parihar K. Defence Materials and Stores Research and Development Establishment, 208 013, Kanpur, India aut Journal of Materials Science Kluwer Academic Publishers 21/11(1986-11-01), 3921-3926 0022-2461 21:11<3921 1986 21 10853 https://doi.org/10.1007/BF00553447 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00553447 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Singh R. Defence Materials and Stores Research and Development Establishment, 208 013, Kanpur, India aut NATIONALLICENCE 700 1- Parihar K. Defence Materials and Stores Research and Development Establishment, 208 013, Kanpur, India aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers 21/11(1986-11-01), 3921-3926 0022-2461 21:11<3921 1986 21 10853 NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02431630 text/html Onlinezugriff via DOI Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer