precast concrete pile

Effect of prestrain on impact toughness and ductile-brittle transition temperature of welded joint;

预应变下焊接接头冲击韧度及韧—脆转变的分析

The Experimental Study on Mechanical Behaviour of Prestrain A3 Steel;

预应变A3钢的力学性能实验研究

The effect of prestrain on the reverse martensitic transformation of TiNi shape memory alloy fibers embedded in an Al matrix has been studied by differential scanning calorimeter(DSC),X-ray diffraction(XRD) and scanning electron microscope(SEM) methods.

采用示差扫描热分析(DSC)、X射线衍射(XRD)和扫描电子显微分析(SEM)等方法,研究了预应变对铝基体中复合的TiNi形状记忆合金丝的马氏体逆相变的影响。

The effect of pre-strain on shape recovery strain in an Fe-25%Mn-4.

5%Si-1%Cr-2%Ni合金预应变对可恢复应变量的影响,并用X射线衍射分析方法考察了应力诱发ε马氏体(εM)体积分数随预应变量的变化关系。

The effect of the pre-strain and technique of heating and cooing on the recovery stress of Fe-Mn-Si-CrNi-C shape memory alloy has been studied.

研究了预应变量、加热和冷却工艺对FeMn－Si-Cr－Ni－C形状记忆合金回复应力的影响。

Influence of pre-strain on fracture behavior of notched specimen of alloy steel with different graininess;

预应变对不同晶粒度合金钢缺口试样断裂行为的影响

In these experiments,specimens were bending to produce different pre-strain respectively,and then reverse bending were taken one by one.

在各弯曲试样得到不同的预应变后,又对其进行反向加载,记录不同预应变下各试样反向加载的弯矩随表面应变的变化曲线。

It is not unloaded until the given pre-strain value is reached.

在不同预变形下对几个试件分别进行加载,当达到给定的预应变值时就卸载,随后再进行反向加载试验,记录其屈服强度。