预制裂纹 meaning in Chinese
precrack
Examples
- Influence of starting notch geometry parameters of connecting rod on its fracture splitting force
连杆预制裂纹槽几何参数对胀裂力的影响 - Numerical simulation on failure process of pre - cracked rock disk under dynamic loading
含预制裂纹岩石试样在动载荷作用下破裂模式的数值模拟 - It shows that damage cracks was borne by the prefabricated crack , and the layer which has the large area of prefabricated crack is the damage area of sandstone
结果表明，含有预制裂纹的红砂岩的损伤演化和裂纹的扩展受到预制裂纹的影响，破坏裂纹从预制裂纹尖端起裂，并且最终破坏发生于含有最大预制裂纹的层面。 - The aim of this work is , using the experimental acoustic emission ( ae ) technique , to study the effect of stress on rock fracture , the changes of some values before rock failure and the influence of cracking in rock on fracture
本文利用实验室声发射( acousticemission ，简称ae )技术，讨论了应力方式对岩石破裂的影响、岩石破裂过程中一些物理量的变化和预制裂纹系对岩石破裂的影响。 - The following results were found , i . e . , the water ratio affects obviously the acoustic wave velocity of rock sample ; the wave velocity is higher in saturated rock samples than in unsaturated ones ; and it decreases gradually with the strain of samples during uniaxial compression ; and also with the lengthening holding time at 160 ; when heating the samples the acoustic wave velocity increases slightly in initial stage and comes to the peak value at 60 , then decreases gradually with increasing temperature ; meantime , there is a certain temperature effect on rock samples size
实验发现含水率对波速影响比较大，饱和岩样的声波传播速度高于不饱和岩样的声波传播速度；人工预制裂纹对声波传播速度影响不大；单轴压缩条件下，声波传播速度随应变增加逐渐降低；在同一温度( 160 )下，波速随保温时间的增加而逐渐降低；在对岩样逐渐加热情况下，初始加热阶段波速略有升高，当温度达到60时，岩样波速达到峰值，之后随着温度继续升高其波速逐渐下降；波速随温度变化具有一定的尺寸效应。