Ultrasonic texture measurement of sheet metals: an integrated system combining Lamb and shear wave techniques
Ultrasonic texture measurement of sheet metals: an integrated system combining Lamb and shear wave techniques
复制标题
DOI：
10.1080/10589750500424294
复制
发表时间：
2005-12
影响因子：
2.6
通讯作者：
M. Potter;S. Dixon
中科院分区：
文献类型：
--
作者：
M. Potter;S. Dixon
我们提出了两种技术的比较超声评价的晶体结构的金属板材：使用偏振剪切波通过厚度模式和使用兰姆波在俯角捕获速度与角度在平面扫描。每种技术在不同的厚度范围内都有效，在毫米范围内有重叠。直接比较这两种技术可以更好地理解所涉及的误差和所使用的近似值。此外，我们还研究了将两种技术结合成一个集成系统的可能性，该系统能够几乎同时使用两种技术测量纹理，并且比任何一个单一系统的复杂性都没有增加。这允许确定额外的材料参数，如厚度或平均lam<s:1>常数。初步结果表明，不同技术对w420的处理结果基本一致，但对w400的处理结果存在显著差异，这是由于材料常数的变化。
We present a comparison of two techniques for the ultrasonic evaluation of the crystallographic texture of sheet metals: the use of polarised shear waves through thickness mode and the use of Lamb waves in a pitch-catch velocity vs angle in plane scan. Each technique is effective over a different range of thicknesses, with overlap in the millimetre regime. A direct comparison of the two techniques leads to a better understanding of the errors involved and approximations used. Additionally, we investigate the possibility of combining the two techniques into an integrated system capable of measuring the texture using both techniques almost simultaneously with little increase in complexity over either single system. This allows the determination of additional material parameters such as the thickness or averaged Lamé constants. Initial results show a generally good agreement between techniques for W 420 but a significant difference between results for W 400 which is attributed to variation in the materials constants.