基于超声衰减谱的金属材料无损辨识
Nondestructive Identification of Metal Materials Based on Ultrasonic Attenuation Spectrum
摘 要
分别以六种不同成份的金属材料为例,获取材料内部一段时域的超声背向散射信号f(t)后,两等份为f1(t)和f2(t),再通过快速傅里叶变换,计算出材料的衰减谱F(ω)。结果表明：利用衰减谱相关系数(两种材料的衰减谱Fa(ω)与Fb(ω)的相关系数)的计算可以对原始材料进行辨识。
无损辨识
金属材料
Attenuation spectrums
Nondestructive identification
Metal material
Abstract
Six kinds of metal materials with different ingredients are taken for example to study. The time domain ultrasonic backscattered signalsf(t) within the material are obtained and all of them are divided into two equivalent parts f1(t) and f2(t),and then analyzed with FFT,finally the attenuation spectrums F(ω) of material are calculated. The experiments show that the calculation by using of attenuation spectrums correlation coefficient (the correlation coefficient between the attenuation spectrums Fa(ω) and Fb(ω) of two kinds of material) can be used for nondestructive identification of metal materials.
中图分类号 TG115.28 DOI 10.11973/wsjc201511011
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(11374201)
收稿日期 2015/3/23
修改稿日期
网络出版日期
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备注刘小荣(1989-),男,硕士研究生,主要从事超声检测方面的研究工作。
引用该论文: LIU Xiao-rong,HE Xi-ping,CUI Dong,LU Kang,HE Sheng-ping,NI Tao. Nondestructive Identification of Metal Materials Based on Ultrasonic Attenuation Spectrum[J]. Nondestructive Testing, 2015, 37(11): 47～50
刘小荣,贺西平,崔东,卢康,贺升平,尼涛. 基于超声衰减谱的金属材料无损辨识[J]. 无损检测, 2015, 37(11): 47～50
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参考文献
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【4】SHI S,LIU Z G,SUN J T,ZHANG M,et al. Study of errors in ultrasonic heat meter measurements caused by impurities of water based on ultrasonic attenuation［J］. Journal of Hydrodynamics,2015,27(1):141-149.
【5】王少军,俞厚德,钱耀洲,等.基于超声散射法的微小缺陷及近表面缺陷的检测［J］. 无损检测,2014,36(1):49-53.
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【7】龙会国,邓宏平,何朋飞,等.锅炉水冷壁管沉积物下腐蚀损伤特征及其超声检测［J］. 无损检测,2014,36(6):19-23.
【8】李继承,林莉,赵扬,等.HIPIB辐照前后Cr2O3陶瓷涂层超声衰减特性研究［J］. 无损检测,2007,29(10):580-583.
【9】田彦平,贺西平,张宏普,等.基于声参量的金属材料辨识方法［J］.陕西师范大学学报:自然科学版,2014,42(3):34-40.
【10】BADIDI B A,LEBAILI S,NCHAALA A. Grain size influence on ultrasonic velocities and attenuation［J］. NDT&E International,2003,36(1): 1-5.
【11】SMAIL H,SARPN M,SELAMI K. Mean grain size determination in marbles by ultrasonic first backwall echo height measurements［J］. NDT&E International,2006,9(1):82-86.
【12】侯怀书,苏明旭,蔡小舒.基于超声衰减谱的纳米颗粒粒度分布测量研究［J］. 声学学报,2010,35(5):508-514.
【13】施克仁.无损检测新技术［M］.北京:清华大学出版社,2007.
【14】KAWASHIMA K.Ultrasonic nondestructive characteriza-tion of material［J］. Proceeding of Japan Society Mechanical Engineering A,2001,67: 370-377.
【15】张洪达,马世伟.Cr-Mo钢平均晶粒尺寸的超声无损评价［J］.上海大学学报:自然科学版,2006,2(12): 164-165.
【16】他得安,王威琪.超声背散射法评价松质骨状况的研究［J］. 应用声学,2013,32(3): 199-204.
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