Point pressure type acquisition device

• Main Authors: ZHANG PENG, LIU XIAODONG, WANG GUOYU, XU YING, LIU DAYANG, TANG DINGMEI, CHEN ZHUO, DU YANPENG, ZHANG ZHENDONG, HAN KUNLIN
• Format: Patent
• Language: Chinese; English
• Published: 20.09.2019
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to a point pressure type collection device, and belongs to the field of defect detection equipment in a concrete structure. The point pressure type collection device comprises a plurality of collectors, wherein a vibration exciter and the collectors are geometrically arranged to form a small-array detection device; when the vibration exciter generates elastic waves through the surface of a transient impact structure, each collector receives the elastic waves transmitted along a medium, and a multiple-source multiple-channel elastic wave data body can be acquired after each excitation to form homologous multiple-channel elastic wave data. Compared with an ultrasonic wave opposite measurement method, a plurality of detection surfaces are not needed; the position of the internal defect can be determined by adopting a relative ultrasonic wave parallel measurement method; compared with a geological radar method, the method is not influenced by metal objects such as internal steel bars and the