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。
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.
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