Vehicle-mounted nondestructive detection system and method for internal diseases of railway track slab structure

• Main Authors: CHEN CHENGSHEN, ZHAO GUANGMAO, WANG SHAOLIN, WANG GUANCHAO, ZHOU HAIBIN, HU WENLIN, QI CHUNYU
• Format: Patent
• Language: Chinese; English
• Published: 18.03.2022
• Subjects: BODY DETAILS OR KINDS OF RAILWAY VEHICLES; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; OTHER AUXILIARY EQUIPMENT FOR RAILWAYS; PERFORMING OPERATIONS; PHYSICS; RAILWAYS; TESTING; TRANSPORTING

The invention belongs to the technical field of engineering nondestructive testing, and discloses a vehicle-mounted nondestructive testing system and method for internal diseases of a railway track slab structure, and the method comprises the steps of non-contact acoustic emission array detection system arrangement, electromagnetic impact hammer signal excitation, data acquisition by an acoustic emission multichannel host, trolley movement, signal re-excitation, data re-acquisition and data synthesis. Data imaging, defect difference analysis and result output. According to the invention, array detection is carried out above the track plate, so that the damage condition in the track plate can be nondestructively detected, and the damage position, depth and mortar void condition in the track plate can be identified; the sensor array keeps a constant distance with the track plate in a non-contact mode, movement detection is facilitated, the sensor array has expansibility, the number of sensors can be increased o