Crane metal structure weld joint fatigue crack monitoring system

A technology for fatigue cracks and metal structures, applied in measuring devices, using sonic/ultrasonic/infrasonic waves to analyze solids, and using sonic/ultrasonic/infrasonic waves for material analysis, etc. and other problems, to achieve the effect of reducing the intensity of personnel inspection, improving monitoring capabilities, and improving operational reliability

Pending Publication Date: 2020-08-28
GUANGDONG INSPECTION & RES INST OF SPECIAL EQUIP ZHUHAI INSPECTION INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

For large cranes, when initial crack damage is found, if they are allowed to continue to work, safe production cannot be guaranteed; if all of them are scrapped, because most of the damaged cranes are still within the design service life, scrapping will not only affect the normal production of the enterprise, and will cause huge economic losses

Method used

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  • Crane metal structure weld joint fatigue crack monitoring system
  • Crane metal structure weld joint fatigue crack monitoring system
  • Crane metal structure weld joint fatigue crack monitoring system

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Embodiment Construction

[0040] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific examples. The embodiments described below are exemplary only for explaining the present invention and should not be construed as limiting the present invention. If no specific technique or condition is indicated in the examples, it shall be carried out according to the technique or condition described in the literature in this field or according to the product specification.

[0041] figure 1 It is a structural frame diagram of the monitoring system of the present invention, figure 2 It is a schematic diagram of sensor network setup and connection of the system of the present invention. Such as figure 1 and 2 As shown, the crane metal structure welding seam fatigue crack monitoring system according to the present invention mainly includes: a monitoring host and...

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Abstract

The invention relates to a crane metal structure weld joint fatigue crack monitoring system, which mainly comprises a monitoring host and a monitoring terminal, wherein the monitoring host comprises asensor network, a piezoelectric impedance monitoring device and a Lamb wave monitoring device. According to the crane metal structure weld joint fatigue crack monitoring system, a monitoring networkis formed by utilizing a plurality of PZT sensors adhered to the vicinity of a crane metal structure weld joint, effective combination of a piezoelectric impedance technology and an active Lamb wave technology is comprehensively utilized, whole-process monitoring of fatigue crack damage from qualitative to quantitative is achieved, and the monitoring process can cover the whole process of fatiguecrack damage from initiation to fracture.

Description

technical field [0001] The invention belongs to the technical field of health monitoring of crane structures, and in particular relates to a fatigue crack monitoring system for welding seams of metal structures of cranes. Background technique [0002] Cranes are important machines for lifting and transporting goods. They are widely used in docks, factories, indoor and outdoor warehouses, etc., and play a very important role in national production. Crane is a kind of intermittent action machinery, which has short-term, repetitive and periodic working characteristics, and the working environment is harsh, and the consequences of its metal structure failure accidents are very serious. The failure types that cause the failure of the metal structure of the crane mainly include cracks, partial or overall deformation, fracture, corrosion, and insufficient rigidity. Among them, fatigue crack damage will significantly reduce the bearing area of ​​the metal structure, which in turn w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N27/04
CPCG01N27/041G01N29/041
Inventor 苏宇航李继承林晓明杨宁祥梁敏健陈建勋
Owner GUANGDONG INSPECTION & RES INST OF SPECIAL EQUIP ZHUHAI INSPECTION INST
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