work of fracture

Work of fracture for composite materials

复合材料的断裂功

Studying and Characterizing the Fracture Behavior of Polyolefin Materials by the Essential Work of Fracture Method

应用基本断裂功方法对聚烯烃材料断裂行为的研究与表征

An increase in crystal grain size of co-polypropylene probably resulted in a decrease in the specific nonessential work of fracture , which induced less ability in preventing fracture for long time .

共聚聚丙烯的晶粒尺寸较大可能造成其比基本断裂功减小，致使其耐长期破裂行为较差。

The specific essential work of fracture ( w_e ) of the composite first increases with the increase of the hot stretch ratio , and shows a maximum at a hot stretch ratio of 19.17 , then decreases with further increasing the hot stretch ratio .

比基本断裂功（we）先随热拉伸比（HSR）增加而增加，热拉伸比为19.17左右时达到最大值，继续增加热拉伸比，we降低。

The excellent mechanical properties were obtained through optimum microstructure parameter . The fractural toughness is 20 ~ 20MPa · m 1 / 2 and the work of fracture is more than 4000 J / M 2 as well as the bending strength remain from 500 ~ 700MPa .

通过对该材料的结构参数和几何参数进行优化设计，可获得优异的力学性能：断裂韧性在20～28MPa·m1/2，断裂功高于4000J/m2，同时抗弯强度可保持在500～700MPa。

From the parameters , the interfacial tension , work of adhesion , fracture energy between filler and polymer matrix had been estimated .

并由此估算出了基体与填料所形成的界面的界面张力γ（SL）、粘附功Wa、裂纹能γG。

This work employs the theory of fracture mechanics , combines the experiment , on the basis of numerical simulation , have launched research to the fatigue reliability and safety problem of silicon aluminium alloy piston . 1 .

本文应用断裂力学的理论，结合试验，在数值模拟的基础上，对硅铝合金活塞机械疲劳可靠性问题展开了研究。