In this article,it describes that the beams strengthened with CFRP sheet which prestressed at one end(the other end anchored previously),the stress distribution and prestress transferable length of CFRP sheet are tested when CFRP sheet is prestressing and releasing,shrinkage of CFRP is also tested.
文章结合一端张拉(另一端先锚固)施工工艺对预应力碳纤维布张拉及放张时应力分布、预应力传递长度以及碳纤维布在预应力长期作用下的回缩量等作了测试。
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。
Application of prestress truss cable in large cross section coal roadway;
大断面煤巷预应力桁架锚索的理论与实践
The method of prestressing electrode thread on WEDM;
快走丝线切割电极丝的预应力法张紧
Research and experiment upon prestressed pull-straightening roller in CCM using photoelastic method;
连铸机预应力拉矫辊的光弹性实验研究