STEEL BRIDGE FATIGUE CRACK MONITORING DEVICE AND METHOD

WIPO Patent Application WO/2021/223310

A1

The present application relates to the technical field of steel bridge fatigue crack monitoring, and particularly relates to a steel bridge fatigue crack monitoring device, comprising: a sliding guide rod; a positioning mechanism having a first position buckle, wherein there are at least two positioning mechanisms, the first positioning buckles on the two positioning mechanisms are sleeved on the sliding guide rod, and the bottom parts thereof are fixedly connected to a steel plate surface at a fatigue crack; and a monitoring mechanism having a second positioning buckle and a TOFD probe, wherein the second positioning buckle is sleeved on the sliding guide rod, the TOFD probe is connected to the second positioning buckle, and the bottom parts of two TOFD probes are in contact with the steel plate at two sides of the crack. The present application monitoring cracks in real time by means of the positioning mechanisms and the monitoring mechanism provided on the sliding guide rod. By means of providing a plurality of monitoring devices at the two ends and the middle of the crack, the changes in the length and depth directions of the crack may be monitored, thus implementing real-time dynamic tracking of cracks in the steel bridge, and improving the durability and operational safety of the steel bridge. Further set forth in the present application is a steel bridge fatigue crack monitoring method.

JP2001504379	INDUSTRIAL APPLICABILITY: An ultrasonic flaw detector for damage to a smooth surface on a crown surface and a method for detecting the same.
WO/2000/034769	METHOD FOR EXAMINING A SOLIDIFIED AND/OR HARDENED MATERIAL USING ULTRASOUND, RECEPTACLE AND ULTRASOUND SENSOR FOR CARRYING OUT THE METHOD
JPH04503862	[Title of the Invention] A device for determining a grade of a mechanical property by which a sample of a hygroscopic material was standardized, without destroying automatic and material

WANG XIANQIANG (CN)
ZHANG JIANDONG (CN)
WU ZANPING (CN)
LIU DUO (CN)
XU HAIHONG (CN)
LIN YI (CN)
HUA CHUNLI (CN)
LI HAO (CN)
YANG YI (CN)
DU YUAN (CN)
CHEN XIN (CN)
ZHANG DONGLIANG (CN)
SUN MIN (CN)
HUANG JIANHUA (CN)

PCT/CN2020/098255

November 11, 2021

June 24, 2020

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JSTI GROUP CO LTD (CN)

G01N29/07

CN203479763U	2014-03-12
CN207689439U	2018-08-03
CN207662845U	2018-07-27
JP2020030070A	2020-02-27
US7104125B2	2006-09-12

KANGXIN PARTNERS, P.C. (CN)

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