Page 110 - 《应用声学》2020年第5期
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752 2020 年 9 月
60 [2] Forman R G, Kearney V E, Engle R M. Numerical anal-
53.51
ysis of crack propagation in cyclic-loaded structures[J].
50
Journal of Basic Engineering, 1967, 89(3): 459–463.
ڀฉࣨϙ/mV 30 20.37 [4] Hirao M, Ogi H. An SH-wave EMAT technique for gas
[3] Rose J L. Ultrasonic guided waves in solid media[M]. Cam-
40
34.88
bridge: Cambridge University Press, 2014.
pipeline inspection[J]. Nondestructive Testing and evalu-
20
ation International, 1999, 32(3): 127–132.
10 [5] Ohtsuka Y, Higashi M, Nishikawa M. Fundamental ex-
periment for inspection of cooling pipes in operation by
0
8f1f1 8f1f2 8f1f4 using ultrasonic technique[J]. Fusion Engineering and De-
ᜈጯࡇࠪ/mm sign, 2006, 81(8–14): 1583–1587.
[6] Moran T J, Panos R M. Electromagnetic generation of
图 12 不同深度裂纹的缺陷波包的幅值 electronically steered ultrasonic bulk waves[J]. Journal of
Fig. 12 Amplitude of wave with different depth Applied Physics, 1976, 47(5): 2225–2227.
of crack [7] Gao H, Lopez B. Development of single-channel and
phased array electromagnetic acoustic transducers for
4 结论 austenitic weld testing[J]. Materials Evaluation, 2010,
68(7): 821–827.
[8] Ogilvy J A. Ultrasonic beam profiles and beam propaga-
本文以厚壁管道为研究对象,建立了斜入射SH
tion in an austenitic weld using a theoretical ray tracing
波检测有限元模型,在管道中激励出斜入射 SH 波, model[J]. Ultrasonics, 1986, 24(6): 337–347.
并对管道内壁不同径向深度的轴向裂纹进行检测, [9] Fortunko C M, Moulder J C. Ultrasonic inspection of
并通过实验验证了仿真结果的正确性,得到主要结 stainless steel butt welds using horizontally polarized
shear waves[J]. Ultrasonics, 1982, 20(3): 113–117.
论如下: [10] Demma A, Cawley P, Lowe M. Scattering of the funda-
(1) 通过扫频实验对斜入射 SH 波的激励频率 mental shear horizontal mode from steps and notches in
进行了频率优选,当入射频率为 1 MHz 时,此时激 plates[J]. The Journal of the Acoustical Society of Amer-
ica, 2003, 113(4 Pt 1): 1880–1891.
励信号束向性最好,旁瓣宽度和旁瓣能量也符合要
[11] Rajagopal P, Lowe M J S. Scattering of the fundamental
求,适宜检测微裂纹。 shear horizontal guided wave by a part-thickness crack in
(2) 用斜入射 SH 波分别对厚壁管道不同深度 an isotropic plate[J]. The Journal of the Acoustical Society
of America, 2008, 124(5): 2895–2904.
的轴向裂纹进行检测,研究发现,由于裂纹尖端衍射
[12] Nurmalia, Nakamura N, Ogi H, et al. Mode conversion
波和裂纹反射回波相位不同,相互叠加导致超声波 behavior of SH guided wave in a tapered plate[J]. NDT &
幅值出现 “多峰” 现象,当裂纹径向深度增加时,斜 E International, 2012, 45(1): 156–161.
入射SH波回波幅值呈现曲折型增加。 [13] Isla J, Cegla F. Coded excitation for low SNR
pulse-echo systems: enabling quasi-real-time low-power
(3) 本文根据 SH 波检测原理,设计并搭建斜入 EMATs[C]//2016 Institute of Electrical and Electronics
射SH 波和表面 SH 波实验检测环境,开展了厚壁管 Engineers International Ultrasonics Symposium (IUS). In-
道内壁轴向裂纹检测实验研究。实验结果表明,斜 stitute of Electrical and Electronics Engineers, 2016: 1–4.
[14] Isla J, Cegla F. Coded excitation for pulse-echo systems[J].
入射 SH 波的检测方法可以用于厚壁管道内壁轴向 Institute of Electrical and Electronics Engineers Transac-
裂纹,并且最小可检测出8 mm×1 mm×1 mm的轴 tions on Ultrasonics, Ferroelectrics, and Frequency Con-
向裂纹,实验结论与仿真结论一致,验证了斜入射 trol, 2017, 64(4): 736–748.
[15] Isla J, Cegla F. EMAT phased array: a feasibility study
SH 波检测厚壁管道内壁微裂纹方法的可行性与科
of surface crack detection[J]. Ultrasonics, 2017, 78: 1–9.
学性。 [16] 石文泽, 吴运新, 龚海, 等. 非铁磁性金属材料螺旋线圈电磁
超声换能器接收效率场路耦合分析 [J]. 中南大学学报 (自然科
学版), 2017, 48(12): 3200–3208.
参 考 文 献 Shi Wenze, Wu Yunxin, Gong Hai, et al. Circuit-field cou-
pled analysis of receiving efficiency of spiral coil electro-
[1] Paris P, Erdogan F. A critical analysis of crack propa- magnetic acoustic transducer in non-ferromagnetic metal
gation laws[J]. Journal of Basic Engineering, 1963, 85(4): material[J]. Journal of Central South University (Science
528–533. and Technology), 2017, 48(12): 3200–3208.