When the value of flaw angle is close to that of failure angle, the specimen is easy to emerge brittle failure with prominent stress decrease.

当预置裂纹缺陷的角度与试样的破坏角接近时，试样最容易发生脆性破坏，并产生很大的应力降。

The following conclusions are obtained: There are sensible elastic deformation and brittle failure feature in the oilwell cement under monopodium stress conditions.

结果表明，单轴应力条件下水泥石具有明显的弹性变形及脆性破坏特征；

The brittle failure of hign strength joint bolt on a ladle turntable happens often under the static load and low stress due to the sensitive and sudden break-up of cracks in hign tension alloy steel.

本文介绍了钢包回转台高强度连接螺栓在静载低应力状态下脆断的实例，证实了断裂原因是由于高强度合金钢裂纹敏感型突发性脆断所致。