材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
ヘルツの接触圧を考慮した圧裂引張応力
淡路 英夫佐藤 千之助
著者情報
ジャーナル フリー

1978 年 27 巻 295 号 p. 336-341

詳細
抄録

The diametral compression testing method, in which a simple penny shaped disk is loaded along a diameter until it splits, is convenient for determining the fracture strength of brittle materials. The maximum tensile stress at the center of disk σH is derived accurately by considering the Hertzian contact width as follows;
σH={1-1.15(b/R)2+0.22(b/R)3P; σP=P/πRt
where R, t and b are the radius, thickness and contact half width of the disk specimen, respectively. σP is the uniform tensile stress on the loading axis when the disk is compressed by the point force P. Furthermore, the correction in the diametral compressive strength for the effects of stress distribution and specimen volume is considered according to the Weibull's statistical theory, in order to apply this method to practical uses.

著者関連情報
© 日本材料学会
前の記事 次の記事
feedback
Top