Sensor to Monitor Localized Stresses on Steel Surfaces Using the Magnetostrictive Delay Line Technique
Kaiming Liang,
Spyridon Angelopoulos,
Georgios Lepipas,
Panagiotis Tsarabaris,
Aphrodite Ktena,
Xiaofang Bi,
Evangelos Hristoforou
Affiliations
Kaiming Liang
Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University (BUAA), Beijing 100191, China
Spyridon Angelopoulos
School of Electrical & Computer Engineering, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece
Georgios Lepipas
School of Electrical & Computer Engineering, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece
Panagiotis Tsarabaris
School of Electrical & Computer Engineering, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece
Aphrodite Ktena
Energy Systems Laboratory, National & Kapodistrian University of Athens, Evripos Campus, 34400 Evia, Greece
Xiaofang Bi
Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University (BUAA), Beijing 100191, China
Evangelos Hristoforou
School of Electrical & Computer Engineering, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece
In this paper, a new type of force sensor is presented, able to monitor localized residual stresses on steel surfaces. The principle of operation of the proposed sensor is based on the monitoring of the force exerted between a permanent magnet and the under-test steel which is dependent on the surface permeability of the steel providing a non-hysteretic response. The sensor’s response, calibration, and performance are described followed by a discussion concerning the applications for steel health monitoring.
