Tai Jan Lean, Sultan Mohamed Thariq Hameed, Łukaszewicz Andrzej, Shahar Farah Syazwani, Tarasiuk Wojciech, Napiórkowski Jerzy
Department of Aerospace Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
Laboratory of Biocomposite Technology, Institute of Tropical Forest and Forest Product (INTROP), University Putra Malaysia, Serdang 43400, Selangor, Malaysia.
Materials (Basel). 2023 Jul 20;16(14):5123. doi: 10.3390/ma16145123.
On-stream inspections are the most appropriate method for routine inspections during plant operation without undergoing production downtime. Ultrasonic inspection, one of the on-stream inspection methods, faces challenges when performed at high temperatures exceeding the recommended 52 °C. This study aims to determine the ultrasonic velocity and attenuation with known material grade, thickness, and temperatures by comparing theoretical calculation and experimentation, with temperatures ranging between 30 °C to 250 °C on low-carbon steel, covering most petrochemical equipment material and working conditions. The aim of the theoretical analysis was to obtain Young's modulus, Poisson's ratio, and longitudinal velocity at different temperatures. The experiments validated the theoretical results of ultrasonic change due to temperature increase. It was found that the difference between the experiments and theoretical calculation is 3% at maximum. The experimental data of velocity and decibel change from the temperature range provide a reference for the future when dealing with unknown materials information on site that requires a quick corrosion status determination.
在线检测是在工厂运行期间进行常规检查而不造成生产停机的最合适方法。超声检测作为在线检测方法之一，在温度超过推荐的52°C的高温下进行时面临挑战。本研究旨在通过比较理论计算和实验，确定已知材料等级、厚度和温度下的超声速度和衰减，温度范围为30°C至250°C，材料为低碳钢，涵盖了大多数石化设备材料和工作条件。理论分析的目的是获得不同温度下的杨氏模量、泊松比和纵向速度。实验验证了温度升高导致超声变化的理论结果。发现实验与理论计算之间的最大差异为3%。温度范围内速度和分贝变化的实验数据为未来处理现场未知材料信息时快速确定腐蚀状态提供了参考。
