采用超声频谱分析技术对厚度为52 mm的环氧浇注绝缘材料底面下直径为0.8~0.25 mm的铝合金夹杂物进行了定量检测。提取不同损伤状态下底面回波功率谱相对于基准信号的均方差（RMSD）值计算结果作为定量表征指数。结果表明：存在铝合金夹杂时，RMSD的数值随损伤尺寸的减小而减小。借助超声频谱分析技术可以对直径为0.25 mm的铝合金夹杂物进行有效检测。
The aluminum inclusions with diameter of 0.8~0.25 mm bonded at the bottom of the epoxy casting insulating material with thickness of 52 mm were tested quantitatively by ultrasonic spectrum anal-ysis technique. The root mean square deviation(RMSD) of the power spectrum of the reflected wave un-der different damage states compared to reference signal was extracted as damage index. The results show that when the aluminum inclusions exist, the RMSD decreases with the decrease of the aluminum inclusion diameter. The ultrasonic spectrum technique can effectively test the aluminum inclusion with the diameter of 0.25 mm.
参考文献
| [1] | DAOCHUN HUANG;YINBIAO SHU;JIANGJUN RUAN;YI HU .Ultra High Voltage Transmission in China: Developments, Current Status and Future Prospects[J].Proceedings of the IEEE,2009(3):555-583. |
| [2] | D. M. McCann;M. C. Forde 20f .Review of NDT methods in the assessment of concrete and masonry structures[J].NDT & E international: Independent nondestructive testing and evaluation,2001(2):71-84. |
| [3] | M. A. Drewry;G. A. Georgiou .A review of NDT techniques for wind turbines[J].Insight: Non-Destructive Testing and Condition Monitoring,2007(3):137-141. |
| [4] | Raisutis R;Jasiuniene E;Sliteris R et al.The Review of Non-destructive Testing Techniques Suitable for Inspection of the Wind Turbine Blades[J].Ultragarsas,2008,63(01):26-30. |
| [5] | Fantidis J G;Potolias C;Bandekas D V et al.Nondestruc-tive Testing of Medium and High Voltage Cables with a Transportable Radiography System[J].Journal of Engineer-ing Science and Technology Review,2010,3(01):89-94. |
| [6] | Robinson A P;Lewin P L;Swingler S G.Detection of Man-ufacturing Defects in Polymeric Cable Joint Insulation Us-ing X-rays[A].,2006:34-37. |
| [7] | Harrold R T .Acoustical Technology Applications in Electri-cal Insulation and Dielectrics[J].IEEE Transactions on Elec-trical Insulation,1985,20(01):3-19. |
| [8] | Reynolds W N;Scudder L D;Pressman H .The Use of Ul-trasonic Wave Attenuation to Monitor Polymer and Compos-ite Quality[J].Testing,1986,6(05):325-336. |
| [9] | Vary A;Bowles K J .An Ultrasonic-acoustic Technique for Non-destructive Evaluation of Fiber Composite Quality[J].Polym Engineering Sci,1979,19(05):373-376. |
| [10] | Suvorov A S .Ultrasonic Flaw Detection in High Voltage Porcelain Insulators[J].Soviet Power Engineering,1975,1(01):54-58. |
| [11] | Gericke O R .Spectrum and Contour Analysis of Ultrason-ic Pulses for the Determination of Microstructure in Metals[J].The Journal of the Acoustical Society of America,1960,32(11):1499-1499. |
| [12] | Anders F;Rolf S .Assessment of Banding in Steels by Us-ing Advanced Image Analysis[J].Materials Characterization,1998,41(01):11-26. |
| [13] | Kawano K;Birring A S .Hydrogen Damage Detection by a Nondestructive Testing Technique[J].Material Perfor-mance,1989,28(08):71-74. |
| [14] | Jeong H.;Hsu DK. .EXPERIMENTAL ANALYSIS OF POROSITY-INDUCED ULTRASONIC ATTENUATION AND VELOCITY CHANGE IN CARBON COMPOSITES[J].Ultrasonics,1995(3):195-203. |
| [15] | Birt E A .A Review of NDE Methods for Porosity Mea-surement in Fibre-reinforced Polymer Composites[J].Jour-nal of Composite Materials,1997,31(03):276-292. |
| [16] | LI Ji-cheng,LIN Li,LI Xi-meng,LI Guang,LEI Ming-kai.Ultrasonic characterization of modified Cr2O3 coatings by reflection coefficient spectroscopy[J].中国有色金属学报（英文版）,2010(03):418-424. |
| [17] | Lescribaa D;Vincent A .Ultrasonic Characterization of Plas-ma-sprayed Coatings[J].Surface and Coatings Technology,1996,81(03):297-306. |
| [18] | Giurgiutiu V;Rogers C A.Recent Advancements in the Electro-mechanical (E/M) Impedance Method for Structural Health Monitoring and NDE[A].San Di-ego,California,1998:536-547. |
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