面向晶粒尺寸的超声多尺度衰减评价方法

李雄兵, 宋永锋, 倪培君, 刘锋

ULTRASONIC EVALUATION METHOD FOR GRAIN SIZE BASED ON MULTI-SCALE ATTENUATION

LI Xiongbing, SONG Yongfeng, NI Peijun, LIU Feng

表2 不同方法的性能对比分析

Table 2 Performance analysis of different methods

Sample No.	$\begin{matrix} D_{v} \end{matrix}$ / mm	$\begin{matrix} E_{v} \end{matrix}$ / %	$\begin{matrix} D_{t} \end{matrix}$ / mm	$\begin{matrix} E_{t} \end{matrix}$ / %	$\begin{matrix} D_{m} \end{matrix}$ / mm	$\begin{matrix} E_{m} \end{matrix}$ / %
1	81.5±5.7	12.57	72.9±2.9	0.69	72.7±1.9	0.41
2	83.6±8.5	1.33	81.2±3.5	-1.58	82.3±2.8	-0.24
3	85.5±10.6	-5.63	95.9±4.1	5.85	91.7±4.0	1.21
4	98.2±8.3	-7.01	102.0±4.5	-3.41	104.2±4.4	-1.33
5	135.7±9.0	0.22	131.5±5.7	-2.88	134.3±2.7	-0.81
6	143.9±10.1	1.41	145.0±6.5	2.18	143.3±3.5	0.99