分析了钢锻件材质超声衰减系数测量精度误差对缺陷定量的影响,对如何提高材质衰减系数测量精度提出了具体测量方法 The influence of the measurement error of the ultrasonic attenuation coefficient of the steel forgings on the quantitative analysis of the defects was analyzed and a specific measurement method was proposed to improve the measurement accuracy of the material attenuation coefficient