Design and assembly of an apparatus system based on đại lý 188bet villari effect for detecting stress concentration zone on ferromagnetic materials

09/11/2020 6174 lượt xem
Doan Thanh Dat, Le Thi Hong Giang, Nguyen Dinh Dung, Hoang Anh Tuan, Nguyen Thi Le Hien. Vietnam Petroleum Institute. Email: hienntl@vpi.pvn.vn. https://doi.org/10.47800/PVJ.2020.10-06.

Summary.

This paper presents đại lý 188bet study results on đại lý 188bet fabrication of a structural integrity assessment apparatus by determining stress concentration zones in pressure pipeline and equipment. đại lý 188bet apparatus uses a triaxial magnetic field sensor to measure magnetic field components in three axes Ox, Oy, and Oz, in đại lý 188bet working range of đại lý 188bet magnetic field from -300 μT to 300 μT. đại lý 188bet investigation of đại lý 188bet selfmagnetic leakage field by this apparatus in đại lý 188bet API 5L steel specimens under tensile stress shows a high variation of đại lý 188bet magnetic field at a steel elongation lower than 1 mm (corresponding to đại lý 188bet elastic deformation state of đại lý 188bet material). In đại lý 188bet case of an artificial defect, đại lý 188bet apparatus can detect a change in đại lý 188bet magnetic field caused by stress concentration.

Key words: Magnetic field apparatus, stress concentration zone, integrity assessment, defect detection, self-magnetic flux leakage.

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