Scholarlink

<p>The integrity of steel pipes is of great importance in multiple industries, such as oil and gas, where saltwater and other corrosive agents inevitably mix with the hydrocarbons leading to internal corrosion that can develop into through-holes on pipe walls. External protective layers of composite material can be applied to postpone the need to stop production for definitive repairs. However, they do not stop the corrosion process. The dimensions of through-holes hidden by the protective layers of composite must be periodically monitored to ensure they do not exceed a critical size that compromises operational safety. Classic inspection methods such as ultrasound can be unreliable when composite materials and steel are combined. To overcome this limitation, different approaches have been studied, such as shearography and thermography. However, accurately and rapidly sizing detected defects remain a significant challenge. In this context, a novel hybrid non-destructive method integrating experimental data from a noninvasive optical interferometry technique and Kirchhoff–Love thin-plate analytical model is presented and validated. Hydrostatic testing was performed in 150-mm-diameter steel pipes with through-holes ranging from 10 to 50&#xa0;mm in diameter and concealed beneath composite material repairs of varied thickness (6–24&#xa0;mm). The proposed method achieved a mean error of 7.8% in measuring through-holes diameter through external non-contact measurements, a significant improvement over classic methods.</p>

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

Non-destructive sizing of through-holes under composite repairs in pipelines by shearography and thin-plate theory

  • 期刊论文

  • 发表日期：

    2025年11月25日

查看全文
  • Tiago J. Bortoli,
  • Analucia V. Fantin,
  • Estiven S. Barrera,
  • Mauro E. Benedet,
  • Daniel P. Willemann,
  • Thiago D. Cabral,
  • Armando A. Gonçalves Jr.,
  • Ana Lúcia F. S. d’Almeida

摘要

The integrity of steel pipes is of great importance in multiple industries, such as oil and gas, where saltwater and other corrosive agents inevitably mix with the hydrocarbons leading to internal corrosion that can develop into through-holes on pipe walls. External protective layers of composite material can be applied to postpone the need to stop production for definitive repairs. However, they do not stop the corrosion process. The dimensions of through-holes hidden by the protective layers of composite must be periodically monitored to ensure they do not exceed a critical size that compromises operational safety. Classic inspection methods such as ultrasound can be unreliable when composite materials and steel are combined. To overcome this limitation, different approaches have been studied, such as shearography and thermography. However, accurately and rapidly sizing detected defects remain a significant challenge. In this context, a novel hybrid non-destructive method integrating experimental data from a noninvasive optical interferometry technique and Kirchhoff–Love thin-plate analytical model is presented and validated. Hydrostatic testing was performed in 150-mm-diameter steel pipes with through-holes ranging from 10 to 50 mm in diameter and concealed beneath composite material repairs of varied thickness (6–24 mm). The proposed method achieved a mean error of 7.8% in measuring through-holes diameter through external non-contact measurements, a significant improvement over classic methods.