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本文试图将超声技术应用于新的领域——损伤力学,去估价金属材料的微观缺陷(由塑性变形引起的)所产生的损伤.建立了超声参数与材料损伤变量D之间的联系,并用这个技术测量了三种球墨铸铁的塑性损伤.
This paper attempts to apply the ultrasonic technique to a new field - damage mechanics, to evaluate the damage caused by microscopic defects of metallic materials (caused by plastic deformation), and to establish the relationship between the ultrasonic parameters and the material damage variable D The technique measures the plasticity of three ductile cast irons.