Frame device for NDT test and application method thereof

Abstract

The invention discloses a frame device for NDT test and application method thereof, the frame device for NCT test comprises a lifting component connected to the testing machine, wherein the below of the lifting component is provided with a bracket, and the two ends of the bracket are respectively connected with a top board and a base board, and the central axis in the vertical direction of the bracket coincides with the central axis of the top board and the base board, and coincides with the central axis in the vertical direction of the testing machine, the top board is connected with the lower surface of the lifting component, and the left and right sides of the upper surface of the top board and the base board are provided with a locating slot respectively for mounting the guide plate, the other end of the guide plate is installed in the guide rail of the testing machine, and the lower part of the base board is connected to a hammer blade. During the test, the lifting mechanism equipped for the testing machine hooks the lifting component and raises the hammer to the set height. When the sample is placed in position, the lifting mechanism disconnects the hook, the hammer body falls freely to impact the sample, after one test is completed, the sample is taken out for assessment of the crack arrest situation, all the connecting parts of the frame device are fixed by bolts, so the assembly and disassembly are simple and convenient, with reasonable design and cost-reducing.

Description

technical field [0001] The invention belongs to the technical field of material testing equipment, and in particular relates to a frame device for NDT testing and a usage method thereof. Background technique [0002] NDT (Nondestructive Testing, non-destructive testing) drop weight test method has been widely valued and widely used in the fields of ships, pressure vessels, bridges, marine engineering, etc. If the NDT temperature of the structural material is lower than the minimum service temperature of the structure, it has sufficient safety performance against brittle fracture. The use temperature of the material can be determined by measuring the NDT temperature by the drop weight test method, and the maximum crack size allowed to prevent brittle fracture under the design stress can be obtained, or the minimum stress for brittle fracture can be obtained from the crack size. In addition, the determination of NDT in fracture mechanics is to evaluate the material design fra...

AI Technical Summary

Problems solved by technology

[0003] The equipment used to test the NDT temperature is a drop-weight impact testing machine, but the existing testing machine is prone to deformation under the action of a huge impact force. After deformation, the frame is no longer horizontal and cannot be restored after deformation. The guide rail is directly welded on the frame. After deformation, it cannot be moved or replaced, and the next round of tests cannot be carried out. Only a new frame can be replaced, and the frame is troublesome to assemble and disassemble. The drop weight testing machine needs to be disassembled and removed. Frameworks are inefficient and expensive to use

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