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double-specimen
相关语句
  双试样
     DOUBLE-SPECIMEN METHOD FOR J_(IC) TSETING
     用双试样求材料的J_(IC)
短句来源
     Based upon the linear relationship between Δα and Δ_p of cracked specimen in the stable growth stage and after yielding of the toughness band, a new method using double-specimen for J_(IC) testing was developed by essential estimation of medium or high toughness materials.
     本文应用裂纹试样在稳定扩展阶段及韧带屈服后,Δa与Δp之间呈线性关系的原理,通过对中、高韧度材料的试验,提出了用双试样求材料,J_(IC)的新方法。
短句来源
  相似匹配句对
     The Critical Load of Double-Notched Specimen
     双边切口试件的极限载荷
短句来源
     DOUBLE-SPECIMEN METHOD FOR J_(IC) TSETING
     用双试样求材料的J_(IC)
短句来源
     double alkanes.
     双链烷技术。
短句来源
     Double chin
     美女拒绝双下巴
短句来源
     CALCULATION OF PLASTIC BENDING WORK IN THE ARMS OF DOUBLE CANTILEVER BEAM SPECIMEN
     双悬臂梁试件中悬臂弯曲塑性功的计算
短句来源
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  double-specimen
Among them are the coating method, the absorbing disk method, the double-specimen method, the pulse heating-cooling method, and the cavity method.
      


This paper describes firstty the simplified double-specimen method for calculating JIC,iustend of themulti—specimen method for the accurn —te JIC On account of the slight difference between the two values of JIC btained the author derives the practical formula JIC= with single specimen only.In the case of lowd medium strength steels the maxium error of JIC thus obtained is 20%,and the error of KIC obt ainedafter conversion is less than 10% as to meet the practicalengineer ing demand.However,the error of...

This paper describes firstty the simplified double-specimen method for calculating JIC,iustend of themulti—specimen method for the accurn —te JIC On account of the slight difference between the two values of JIC btained the author derives the practical formula JIC= with single specimen only.In the case of lowd medium strength steels the maxium error of JIC thus obtained is 20%,and the error of KIC obt ainedafter conversion is less than 10% as to meet the practicalengineer ing demand.However,the error of JIC is generally below 10% if the quantities involved are carefully determined,so that a better KIC re sults.The formula described in the paper is of simple form,with high accuracy and less scattering is data.It is therefore recommended as a practical formula for calculating JIC in place of the fomula JIC=2U/B(w-a) usually adopted.

在本文的开始部分,叙述了采用简化双试件法来计算 J_(Ic),以代替求 J_(Ic)精确值的多试件法。由于两个 J_(Ic)值相差微小,作者就根据双试件法而导出只需单个试件的实用公式 J_(Ic)=1.2U/B(W-1.2a)。对于低、中强度钢,由此式得到的J_(Ic)其误差最大为20%,换算后得到的 K_(Ic)。值误差小于10%,这就满足了实际工程需要。事实上,如果谨慎测得式中有关各量,J_(Ic)的误差常不超过10%,因而可得到更好的 K_(Ic)结果。本文所导出的公式,形式简单,精度高,数据分散性小,因此可推荐作为 J_(Ic)的实用计算公式,以替代通常应用的公式J_(Ic)=2U/B(w-a)°。

Based upon the linear relationship between Δα and Δ_p of cracked specimen in the stable growth stage and after yielding of the toughness band, a new method using double-specimen for J_(IC) testing was developed by essential estimation of medium or high toughness materials. Its simplicity and accuracy may be available to the industrial laboratories on the requirement of engineering design.

本文应用裂纹试样在稳定扩展阶段及韧带屈服后,Δa与Δp之间呈线性关系的原理,通过对中、高韧度材料的试验,提出了用双试样求材料,J_(IC)的新方法。方法简便可靠、精度符合工程设计要求,尤其节省大量试料,可供工厂试验室采用。

A new kind of special-shape test plate is proposed in this paper. Experiments are conducted with double specimen method and COD is measured by micro-photography. The test results shows this kind of smaller specimen has the character of high strain gradient distribution just as a nozzle of pressure vessel doesand it can avoid some main defects of the big type wide plate test for model engineering structure.

本文提出了一种新型异形试板,采用双试样法进行试验并用显微摄影测量COD。试验结果表明:它具有压力容器接管的高应变梯度分布特性,避免了传统宽板试验模拟工程结构的一些缺点。

 
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