Zobrazeno 1 - 10
of 35
pro vyhledávání: '"W. H. Duckworth"'
Autor:
W. H. Duckworth
Publikováno v:
Journal of the American Ceramic Society. 34:1-9
Factors in obtaining and interpreting tensile data on ceramic bodies are discussed, with particular attention given to the use of bending. A bend test can be used conveniently to obtain precise tensile data as long as stress is directly proportional
Autor:
W. H. Duckworth, G. K. Bansal
Publikováno v:
Journal of Materials Science. 13:239-242
An investigation was made of strength degradation caused by moisture-assisted slow crack growth of surface flaws in two dense polycrystalline ceramics. Specimen sizes were varied. The observed strength degradation of each ceramic was predictable usin
Publikováno v:
Journal of the American Ceramic Society. 59:472-478
Bend strengths of two sizes of specimens of an alumina ceramic were determined under conditions that either enhanced or restricted sub critical crack growth. The specimen sizes differed in each linear dimension by a factor of five and the effective s
Publikováno v:
Engineering Fracture Mechanics. 26:825-840
Mixed-mode fracture of soda-lime glass was studied using a diametral-compression test that features disk specimens with symmetric through-cracks. The test enables one to study fracture under pure mode I loading, pure mode II loading, or any combinati
Publikováno v:
Journal of the American Ceramic Society. 64:1-4
Uniaxial and equibiaxial tensile strengths are reported for glass-ceramic specimens exhibiting strength isotropy. Uniaxial strengths were determined in both 3- and 4-point bend tests. Stressing rate was a controlled variable and the tests were conduc
Publikováno v:
Journal of the American Ceramic Society. 59:189-192
Mechanical tests of most ceramics are subject to stringent requirements, more so than tests of materials which possess some ability to undergo plastic deformation. In this paper, sources of stress concentrations and spurious displacements which may b
Publikováno v:
Journal of the American Ceramic Society. 66:36-42
An improved test fixture for biaxial-tension strength testing of ceramics featuring uniform pressure loading of disks was developed and qualified. Biaxial data were obtained for an alumina ceramic, along with comparable uniaxial data from three- and
Publikováno v:
Journal of Materials Science. 20:935-940
Bend-test curves were calculated for materials obeying three very different damage laws. One result of the calculations is that the neutral axis migrates towards the compression face as the load-point displacement increases. For the three damage laws
Autor:
W. H. Duckworth, A. R. Rosenfield
Publikováno v:
International Journal of Fracture. 32:R59-R62