Application of Digitised Frequency Modulated Thermal Wave Imaging for Testing and Evaluation of Rebar Corrosion in Concrete Structures: A Numerical Study

IF 0.9 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING
Anshul Sharma, Vanita Arora, Ravibabu Mulaveesala
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引用次数: 0

Abstract

The utilization of reinforced concrete structures has an extensive past within the realm of infrastructure due to its economical nature, impressive robustness, ability to withstand adversity, and eco-friendliness, alongside the uncomplicated procurement of essential raw materials. Nevertheless, these structures have certain drawbacks, including limited tensile strength and malleability, resulting in cracks within the edifices. These cracks have the potential to permit the ingress of chlorides, leading to corrosion of the reinforcement. In order to effectively address issues of quality control, upkeep, and strategic renovation of these buildings, it becomes imperative to employ a suitable nondestructive testing and assessment technique for comprehensive surveillance aimed at early detection of hidden rebar corrosion. Infrared thermal wave imaging has arisen as a feasible method for the nondestructive examination and assessment of reinforced concrete structures. This is attributed to its ability to perform comprehensive, remote, and rapid inspections, facilitating the monitoring of subsurface rebar corrosion. The current section introduces an innovative approach known as Digitised frequency modulated thermal wave imaging (DFMTWI) within diverse thermal nondestructive testing methodologies. This technique is put forward to numerically test and evaluate rebar corrosion within concrete structures, and the obtained results are then compared with the frequency-modulated thermal wave imaging (FMTWI) results by taking signal-to-noise ratio (SNR) as a figure of merit.

Abstract Image

Abstract Image

应用数字化调频热波成像技术测试和评估混凝土结构中的钢筋锈蚀:数值研究
摘要 由于钢筋混凝土结构经济实惠、坚固耐用、抗压能力强、生态友好,而且原材料采购简单,因此在基础设施领域有着广泛的应用。然而,这些结构也有一些缺点,包括抗拉强度和延展性有限,导致建筑物内部出现裂缝。这些裂缝有可能允许氯化物进入,导致钢筋腐蚀。为了有效解决这些建筑物的质量控制、维护和战略翻新问题,必须采用合适的无损检测和评估技术进行全面监控,以便及早发现隐藏的钢筋锈蚀。红外热波成像技术已成为对钢筋混凝土结构进行无损检测和评估的可行方法。这是因为红外热像仪能够进行全面、远程和快速检查,从而促进对地下钢筋锈蚀的监测。本节在各种热无损检测方法中引入了一种创新方法,即数字化频率调制热波成像(DFMTWI)。该技术用于对混凝土结构中的钢筋腐蚀情况进行数值测试和评估,然后将获得的结果与频率调制热波成像(FMTWI)的结果进行比较,并将信噪比(SNR)作为衡量标准。
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来源期刊
Russian Journal of Nondestructive Testing
Russian Journal of Nondestructive Testing 工程技术-材料科学:表征与测试
CiteScore
1.60
自引率
44.40%
发文量
59
审稿时长
6-12 weeks
期刊介绍: Russian Journal of Nondestructive Testing, a translation of Defectoskopiya, is a publication of the Russian Academy of Sciences. This publication offers current Russian research on the theory and technology of nondestructive testing of materials and components. It describes laboratory and industrial investigations of devices and instrumentation and provides reviews of new equipment developed for series manufacture. Articles cover all physical methods of nondestructive testing, including magnetic and electrical; ultrasonic; X-ray and Y-ray; capillary; liquid (color luminescence), and radio (for materials of low conductivity).
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