00000nam 2200000zi 4500 9.869768 CaOODSP 20221107162935 m o d f cr ||||||||||| 190313t19671967oncad #ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- M38-1/190-1967E-PDF Trudeau, L. P., author. Mechanism of low-stress brittle fracture in normally ductile materials / L.P. Trudeau, Physical Metallurgy Division. Ottawa : Department of Energy, Mines and Resources, Mines Branch, 1967. ©1967 1 online resource (iv, 23 pages) : illustrations, graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier Research report ; R 190 Title from cover. "January 1967." Digitized edition from print [produced by Natural Resources Canada]. Includes bibliographical references. "A mechanism is suggested for brittle failures, in service, from small flaws in normally ductile materials which exhibit an impact energy transition behaviour. The theory suggests, and experiments confirm, that the minimum defect size required for fracture may be more than an order of magnitude smaller than the average size required. The necessary conditions for such a fracture are: (1) the material must exhibit dynamic nil-ductility behaviour under the conditions of stress, temperature and section size that apply in the structure; (2) there must be a defect of sufficient size to give rise to a stress field capable of sustaining a running fracture; and (3), at the base of this stress raiser, there must be a metallurgical imperfection or operative process capable of giving a fast increment of rupture over a microscopic distance comparable to the plastic zone size of a running fracture"--Abstract, page i. Includes abstract in French. gccst Steel gccst Metals gccst Measurement Canada. Department of Energy, Mines and Resources. Canada. Mines Branch. Canada. Physical Metallurgy Division. Research report (Canada. Mines Branch) R 190. (CaOODSP)9.855660 PDF 1.38 MB https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-1/M38-1-190-1967-eng.pdf