拉伸断裂

After natural weathering, flexural properties increased greatly, tensile strength decreased, except for those with HALS and phthalocyanine green, tensile elongation at break and impact ductility decreased greatly.

自然老化后，弯曲性能大幅度提高，拉伸强度除添加受阻胺和酞菁绿的之外，其余均降低，拉伸断裂伸长率和冲击韧性大幅度降低。

It has been found that there is an empirical relationship between the interionic separations at fusion and at tensile fracture of NaCl-structure ionic crystals, viz.

发现拉伸断裂时的离子间距γi与从等压态方程计算得到的晶体熔化时的离子间距γm之间存在一个经验关系式，即γm=0。

ABSTRACT In this thesis, the microstructure, the in situ tensile fracture processes and the mechanism of deformation and fracture of the SiC whisker reinforced aluminium composites made by a squeeze casting method were studied by means of SEM, TEM, HVEM, AES, HREM, electronic tensile machine and magnetic tape recorder. The dislocation theory and the complex function method were also used during analysis.

本文利用扫描电镜、透射电镜、高压电镜、俄歇谱仪、高分辨电镜、电子拉伸机和磁带式记录仪等设备和技术以及位错理论和复变函数方法研究了由高压凝固铸造法制备的碳化硅晶须增强铝复合材料的显微组织、动态拉伸断裂过程以及在特殊条件下变形和断裂的规律。

The test outcome indicates that the AE signal is abundant and has good measurability in the process.

研究表明，材料拉伸断裂过程中，声发射信号丰富明显，可测性良好，并且不同破坏阶段的声发射信号具有不同的特征。

At this point, tensile fracture partially occurred, as evidenced by some apparent necking.

这时，一些明显的颈缩现象表明，发生了局部拉伸断裂。

The effect of the cross-linking agent on the sericin's physical property and structure was discussed.

结果表明，交联剂对丝胶蛋白膜的交联作用明显，引起了丝胶结晶形态的变化；并改善了丝胶蛋白膜的物理性能，交联剂PEGO10加入 30 %左右所制得的丝胶蛋白膜拉伸断裂强度和断裂伸长率较好。

Fractography analysis shows that the global tension failures trimly,because of matrix cracks and tension fracture of fiber and the compression specimens failure in a shear plane about a little angle to the compression loading direction because of delamination and longitudinal fiber shear fracture.

其拉伸断口较为平齐，基体开裂以及纤维拉伸断裂是主要破坏形式；压缩破坏呈现剪切断面，压缩断面和压缩加载方向形成一个较小夹角，层间分层和纵向纤维剪切断裂是其主要破坏形式。

The mat rix failure may play a significant role in the failure mechanism of YAl 2P/ Mg-Li-Al composite.

基体的断裂失效在 YAl 2P/ Mg2Li2Al复合材料拉伸断裂过程中起很大作用。

To improve the compatibility between the wood fiber and polymer, wood fiber were treated with modified titanates and grafted acrylonitrile.

用改性钛酸酯类偶联剂处理木纤维可提高复合材料的拉伸强度，但大大降低了复合材料的拉伸断裂伸长率。

Common rolling plank is shown intense (orientaton of 0002) tool reference plane, after rolling of horn waiting for diameter, plank grain orientaton by original (change of orientaton of 0002) tool reference plane is; of orientaton of blame tool reference plane the existence after strain crack of common rolling plank is many twin brilliant, amount of brilliant of twin of drawing of direction of rolling of edge of plank of rolling of horn w

普通轧制板材呈强烈的(0002)基面取向，等径角轧制后，板材晶粒取向由原来的(0002)基面取向转变为非基面取向；普通轧制板材拉伸断裂后存在大量孪晶，等径角轧制板材沿轧制方向拉伸孪晶数量明显减少，等径角轧制有可能启动了新的滑移系，而拉伸孪生只是作为一种协调变形机制。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。