大型钛合金锻件厚度对超声杂波水平的影响
Effect of Thickness on Ultrasonic Noise of Large TC4 Titanium Forging
摘 要
对大厚度钛合金锻件不同厚度的横截面及纵剖面切片试样进行了金相观察, 应用超声接触法和水浸法检测了不同厚度试样的衰减和杂波水平。进而分析认为大厚度钛合金锻件远场区厚度影响杂波评定水平的两个主要途径为: 远场区的声束扩散和主声束与声轴线的声压分布随厚度的相对变化。分析结果为大厚度钛合金锻件远场区超声检测方案的确定和超声检测标准的制定提供了依据。
超声检测
杂波水平
厚度
声束扩散
Titanium alloys
Ultrasonic testing
Noise level
Thickness
Beam divergence
Abstract
By metallographic observation of the large titanium alloys forging with different thicknesses on cross section and vertical section, and through detecting the bottom attenuation and noise level of various thickness of the samples by conventional ultrasonic testing method and water immersion method, the reason that the noise level of the Large forging in the far field increased with the thickness was analyzed. The results show that the most important mechanism for the influence of thickness on noise level is that the beam divergence in the far field and the ultrasonic pressure distribution on the main beam and the beam axis varies with the thickness, which provides the basis for determining the ultrasonic detection scheme and setting the ultrasonic detection standards of the large TC4 titanium alloys forging.
中图分类号 TG115.28 DOI 1000-6656(2014)09-0014-05
所属栏目 试验研究
基金项目
收稿日期 2013/10/30
修改稿日期
网络出版日期
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备注王弘(1973-),男,硕士,主要从事超声波检测研究。
引用该论文: WANG Hong,LIANG Jing,SHI Yi-wei,HAN Bo,GAO Xiang-xi,TAO Chun-hu. Effect of Thickness on Ultrasonic Noise of Large TC4 Titanium Forging[J]. Nondestructive Testing, 2014, 36(9): 14～18
王弘,梁菁,史亦韦,韩波,高祥熙,陶春虎. 大型钛合金锻件厚度对超声杂波水平的影响[J]. 无损检测, 2014, 36(9): 14～18
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参考文献
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【2】马小怀.钛合金超声波杂波产生原因的分析［J］.无损检测,2006,28(12): 649-651.
【3】胡宗式.钛合金超声探伤中杂波与组织的关系［J］.钛工业进展,2002(6): 31-34.
【4】李家伟.无损检测手册［M］. 北京: 机械工业出版社,2002.
【5】赵爱国,史亦韦,张卫方,等.TA11钛合金棒材特性对比研究[J].材料工程,2003(z1): 184-186.
【6】HAN Y K, THOMPSON R B. Ultrasonic Backscattering in Duplex Microstructures［J］. Theory and Application to Titanium Alloys, Metallurgical and materials transactions, January 1997, 28, A: 91-104.
【7】WAGNER R F, SMITH S W, SANDRIK J M, et al.“Statis-tics of speckle in ultrasound B-scans,”［J］. IEEE Trans. Sonics Ul-trason, 1983, 30: 156-163.
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【9】RUSSELL M D and NEAL S P.“Experimental evidence of single and multiple scattering in polycrystalline materials,”［C］∥Review of Progress in Quantitative Nondestructive Evaluation. Plenum 1997: 1521-1528.
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【11】张英明,韩明臣,田园,等.钛合金超声探伤技术［J］.稀有金属快报,2008,27(10): 1-5.
【12】张永德.量子力学［M］.北京: 科学出版社,2008: 274-275.
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