Apparatus and method for detecting fatigue cracks in orthotropic panels

An orthotropic plate and fatigue crack technology, which can be used in measurement devices, analysis of solids using sonic/ultrasonic/infrasonic waves, and material analysis using sonic/ultrasonic/infrasonic waves. and other problems to achieve the effect of improving the detection efficiency and expanding the effective area

Active Publication Date: 2020-11-27
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current method for these damages is manual sampling inspection, which has the disadvantages of low efficiency, high missed detection rate and high cost.

Method used

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  • Apparatus and method for detecting fatigue cracks in orthotropic panels
  • Apparatus and method for detecting fatigue cracks in orthotropic panels
  • Apparatus and method for detecting fatigue cracks in orthotropic panels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as Figure 1 to Figure 8 As shown, the device and method for using the present invention for fatigue crack detection of orthotropic panels include a vehicle body, the vehicle body includes a front 2 and a rear 10, the front 2 is hinged to the rear 10, and the front 2 is provided with an angle adjustment assembly, the angle adjustment assembly can adjust the size of the angle formed between the front 2 and the rear 10, the bottom of the front 2 and the rear 10 are provided with a first motor 17, the first motor 17 The output end is provided with a permanent magnet wheel 3; the tail 10 is also provided with a steering gear b11, the output end of the steering gear b11 is provided with a detection mechanism 8, and the detection mechanism 8 can rotate around the connection with the steering gear b11 , the detection mechanism 8 includes a connecting rod 8-1, a drive assembly, a connector 8-10, a limiter and a detection assembly, one end of the connecting rod 8-1 is conne...

Embodiment 2

[0049] On the basis of Embodiment 1, a camera 1 and a battery 16 are provided on the top of the vehicle head 2, and the camera 1 is connected to the battery 16 and the controller 12 respectively.

Embodiment 3

[0051] On the basis of Embodiment 1, a rotating shaft is provided at the center of the permanent magnet wheel 3, a first gear is provided on the rotating shaft, and the first gear and the permanent magnet wheel 3 are coaxial, and the output of the first motor 17 There is also a second gear meshed with the first gear on the end; there are two first motors 17 at the bottom of the front end 2 and the rear end 10, and the two first motors 17 are arranged in a misplaced position.

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PUM

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Abstract

The invention discloses a device for detecting fatigue cracks of an orthotropic panel and a use method thereof. The device comprises a vehicle body and is characterized in that the vehicle body comprises a headstock and a tailstock which are hinged with each other; an angle adjusting component is arranged on the headstock and used for adjusting an included angle formed between the headstock and the tailstock; first motors are arranged at the bottoms of the headstock and the tailstock, and permanent magnet wheels are arranged at the output ends of the first motors; a steering engine b is arranged at the tailstock, a detection mechanism is arranged on the output end of the steering engine b, the detection mechanism comprises a connecting rod, a driving component, a connector, a stopper and adetection component, one end of the connecting rod is connected with the output end of the steering engine b, the other end of the connecting rod is connected with the driving component, one end of the connector is connected with the driving component, the other end of the connecting head is respectively connected with the stopper and the detection component, and the included angle between the stopper and the detection component can be adjusted; a controller and an ultrasonic ranging module are further arranged on the headstock, the controller is respectively connected with an ultrasonic ranging module, the first motors, the steering engine b and the driving component.

Description

technical field [0001] The invention relates to the technical field of orthotropic panel detection, in particular to a device for detecting fatigue cracks of an orthotropic panel and a method for using the same. Background technique [0002] The orthotropic slab is also called the orthotropic panel. The orthotropic slab is the orthotropic steel bridge deck. load structure. This structure is structurally anisotropic because its stiffness differs in two directions perpendicular to each other. The orthotropic plate is an important part of the steel bridge, and it is also the most easily damaged part. Due to the repeated ballasting of the vehicle, cracks will appear on the orthotropic plate, especially at the weld between the U rib and the top plate. The current method for these damages is manual sampling inspection, which has the disadvantages of low efficiency, high missed detection rate and high cost. Contents of the invention [0003] The technical problem to be solved ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04G01N29/265
CPCG01N29/04G01N29/265G01N2291/0234G01N2291/0289G01N2291/2632
Inventor 王海波勾红叶韩冰薛朝军王君明杨彪华辉邹怀静魏莹莹
Owner SOUTHWEST JIAOTONG UNIV
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