摘要
在谐波和活塞波声场理论的基础上,提出了修正的距离波幅曲线计算公式。大量实验数据证明,修正公式比原有公式(单纯活塞波或超声波缺陷当量计算尺公式)精度更高,在5>0.8N范围内实验数据最大误差平均值<1dB,使理论计算能完全满足实际探伤的需要,而且拟合计算出的衰减系数比较合理。
An amended formula for distance-amplitude curve is given. Experimental data show that the formula with error of only about 1dB in the range of S>0. 8N is more accurate than the original ones and it is more reasonable for attenuation coefficient count.
出处
《无损检测》
1997年第7期197-200,共4页
Nondestructive Testing
