Scholarlink

Stainless Steel structures such as pipelines are utilised in several industries to transport steam, crude oil and gas across long distances. They usually built over many miles onshore and offshore through different weather conditions. However, continued exposure to harsh environmental conditions such as high temperatures and pressure may cause corrosion and local thinning of pipe walls, which may lead initiation of cracks. This issue can be addressed effectively by regular inspection of structures using non-destructive testing (NDT) techniques. This manuscript focuses on application of an electromagnetic NDT method known as Transient Eddy Current Oscillations (TECO) technique for detecting surface cracks in stainless steel. Unlike the conventional Eddy Current Testing (ECT) approach, TECO identifies cracks using the decay of oscillations which are generated by a L-C tank circuit. A differential probe is fabricated with two hall sensors to identify the cracks in metal. The test specimen is a SS304 steel plate, featuring 1 mm to 4 mm crack depths starting from the surface, was fabricated using the electric discharge machine (EDM) technique. The obtained results were analysed in both frequency and time domain, continuous wavelet transform (CWT) technique is applied and several features were identified to interpret the crack depths. The identified features are able to clearly distinguish the crack depth in the test material.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Electromagnetic Transient Eddy Current Oscillations Differential Probe Technique to Detect Superficial Cracks in Steel Configurations

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Manu Sainadh Pilla,
  • Yesudas Bammidi,
  • Sujitha Nimushakavi,
  • Gopala Krishna Podagatlapalli,
  • Kiran Kumar Yelanati,
  • Kanaka Raju Pappala,
  • Chandra Sekhar Angani

摘要

Stainless Steel structures such as pipelines are utilised in several industries to transport steam, crude oil and gas across long distances. They usually built over many miles onshore and offshore through different weather conditions. However, continued exposure to harsh environmental conditions such as high temperatures and pressure may cause corrosion and local thinning of pipe walls, which may lead initiation of cracks. This issue can be addressed effectively by regular inspection of structures using non-destructive testing (NDT) techniques. This manuscript focuses on application of an electromagnetic NDT method known as Transient Eddy Current Oscillations (TECO) technique for detecting surface cracks in stainless steel. Unlike the conventional Eddy Current Testing (ECT) approach, TECO identifies cracks using the decay of oscillations which are generated by a L-C tank circuit. A differential probe is fabricated with two hall sensors to identify the cracks in metal. The test specimen is a SS304 steel plate, featuring 1 mm to 4 mm crack depths starting from the surface, was fabricated using the electric discharge machine (EDM) technique. The obtained results were analysed in both frequency and time domain, continuous wavelet transform (CWT) technique is applied and several features were identified to interpret the crack depths. The identified features are able to clearly distinguish the crack depth in the test material.