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Design of a pulsed electromagnet‑type electromagnetic acoustic transducer and detection method for near‑surface defects in ferromagnetic metals
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Peng HUO1, 3, Guodong MA2, Chongshun TIAN2, Chenxi XIE2, Cuixiang PEI2
Pressure Vessel Technology | 2026, 43(2) : 79 - 86
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Pressure Vessel Technology | 2026, 43(2): 79-86
• Inspection & Maintenance •
Design of a pulsed electromagnet‑type electromagnetic acoustic transducer and detection method for near‑surface defects in ferromagnetic metals
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Peng HUO1, 3, Guodong MA2, Chongshun TIAN2, Chenxi XIE2, Cuixiang PEI2
Affiliations
  • 1School of Electrical Engineering，Xi'an Jiaotong University，State Key Laboratory of Electrical Insulation and Power Equipment，Xi'an 710049，China
  • 2School of Aerospace，Xi'an Jiaotong University，State Key Laboratory for Strength and Mechanical Structures，Xi'an 710049，China
  • 3Longyuan （Beijing） New Energy Engineering & Technology Co.，Ltd.，Beijing 100034，China
Published: 2026-02-28 doi: 10.3969/j.issn.1001-4837.2026.02.008
Outline
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To overcome the problems of strong magnetic force interference，low transduction efficiency，and poor detection performance existing in current electromagnetic acoustic surface wave transducers when detecting structural defects in ferromagnetic metals，a novel electromagnetic acoustic surface wave transducer based on a U‑type pulsed electromagnet with high conversion efficiency and strong adaptability，as well as a corresponding detection method，were designed and developed.Finite element numerical simulation was used to optimize the transducer configuration and verify the feasibility of the detection method.A pulsed electromagnet‑type electromagnetic acoustic testing system was established.The effects of pulse number，excitation voltage，and defect size on the transducer performance were analyzed，and the performance differences between this transducer and existing electromagnetic acoustic transducers were compared.The results show that the pulsed electromagnet‑type transducer has significantly better near‑surface defect detection capability in DH36 low‑alloy carbon steel compared to existing electromagnetic acoustic transducers.This study provides a new method for addressing near‑surface defects in ferromagnetic metals.

ferromagnetic metal  /  electromagnetic acoustic transducer  /  surface wave  /  pulsed electromagnet  /  defect detection
霍鹏, 马国栋, 田崇顺, 解晨曦, 裴翠祥. 铁磁性金属近表面缺陷的脉冲电磁铁式电磁超声传感器设计及检测方法. 压力容器, 2026 , 43 (2) : 79 -86 . DOI: 10.3969/j.issn.1001-4837.2026.02.008
Peng HUO, Guodong MA, Chongshun TIAN, Chenxi XIE, Cuixiang PEI. Design of a pulsed electromagnet‑type electromagnetic acoustic transducer and detection method for near‑surface defects in ferromagnetic metals[J]. Pressure Vessel Technology, 2026 , 43 (2) : 79 -86 . DOI: 10.3969/j.issn.1001-4837.2026.02.008
Appendix
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Year 2026 volume 43 Issue 2
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Article Info
doi: 10.3969/j.issn.1001-4837.2026.02.008
  • Receive Date：2025-10-23
  • Online Date：2026-10-23
  • Published：2026-02-28
Article Data
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History
  • Received：2025-10-23
  • Revised：2025-12-26
Affiliations
    1School of Electrical Engineering，Xi'an Jiaotong University，State Key Laboratory of Electrical Insulation and Power Equipment，Xi'an 710049，China
    2School of Aerospace，Xi'an Jiaotong University，State Key Laboratory for Strength and Mechanical Structures，Xi'an 710049，China
    3Longyuan （Beijing） New Energy Engineering & Technology Co.，Ltd.，Beijing 100034，China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
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Number of
species		 占总种数比例
Percentage of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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