Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||FRACTURE OF GLASS IN TENSILE AND BENDING TESTS|
|Abstract:||To fully characterize the mechanical behavior of ceramics, it is useful to study their response to both tensile and bending tests. In this investigation, a quantitative comparison is made between tensile and bending results from (circularly) cylindrical glass rods of borosilicate glass and of fused silica. These experimental results show that in each material, the Weibull exponent m is approximately the same for both types of test. The fractured samples clearly showed that all failures initiated at surface-located flaws. The stress level at which the probability of fracture in tension equals 50 pct was determined; the maximum tensile stress for 50 pct probability of fracture in bending was also determined. The ratio of these two stresses was predicted previously from simple, theoretical considerations based upon the applicability of the Weibull function and on the distribution of defects in the specimens. This theoretical result is inconsistent with the experimental observations in view of the fractography. Therefore, it is concluded that failure in the materials tested is not satisfactorily described by Weibull statistics.|
|Editor:||Minerals Metals Materials Soc|
|Citation:||Metallurgical And Materials Transactions A-physical Metallurgy And Materials Science. Minerals Metals Materials Soc, v. 25, n. 5, n. 961, n. 968, 1994.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.