DataVXNondestructive Testing and EvaluationPaper
journal article·2019-04-03

Study on a combined NDT method based on ACFM and eddy current thermography

Min He, Weijun Li, Wenpei Zheng, Guansheng Qi

Nondestructive Testing and Evaluation· Volume 34· Issue 2
Publisher page
Source abstract

Abstract

Alternating current field measurement (ACFM) and eddy current thermography are two non-destructive testing (NDT) methods widely used in industries. In this study, a combined NDT method based on the two methods is proposed. Firstly, some relative mathematical models are provided, and then an experimental system is designed for the combination of the two methods. The obtained magnetic field signal is smoothed by the double moving average method and crack identification and location are realised by using the method based on the morphological characteristics of Bx curve. Then, the thermal images are processed by a new method which is called virtual sensing technology (VST). It proves that VST can extract useful defect information from the images efficiently. The effect of excitation current on magnetic field and temperature field is studied and optimal current value is determined. Also, the effect of temperature and external magnetic field on magnetic field sensor is discussed. Finally, the future prospects of the combination of ACFM and eddy current thermography are discussed in this paper.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Thermography and Photoacoustic Techniques · Non-Destructive Testing Techniques · Ultrasonics and Acoustic Wave Propagation

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, China

College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao, China

College of Safety and Ocean Engineering, China University of Petroleum, Beijing, China

Funding

Natural Science Foundation of Shandong Province · National Natural Science Foundation of China · Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents · First-class Discipline of Mineral Engineering construction project of Shandong University of Science and Technology

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