High-speed rail wheel electromagnetic tomography flaw detection method and device

• Main Authors: YUE YUANLI, LI YONG, LIU ZE, WU JIANLI, LIU XIANGLONG
• Format: Patent
• Language: Chinese; English
• Published: 30.04.2019
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a high-speed rail wheel electromagnetic tomography flaw detection method and device. The device comprises a signal generating device and a signal transmitting and processing device; the signal generating device comprises a U-shaped electromagnetic tomography sensor support and electromagnetic coils, and the electromagnetic coils are evenly installed in the U-shaped electromagnetic tomography sensor support and used for collecting induced voltage signals of high-speed rail wheels according to the signals transmitted by the signal transmitting and processing device; the signal transmitting and processing device generates an alternating sine excitation signal with a fixed frequency phase through an excitation signal generation module; a power amplification module amplifies the excitation signal, a channel switching module performs gating switching on an electromagnetic coils, a signal conditioning module amplifies and filters induced voltage signals output by the electromagnetic coils, and