Wall surface residual stress test fixture and operation method thereof

Abstract

The invention provides a wall surface residual stress test clamp and an operation method thereof.The wall surface residual stress test clamp is used for being matched with a diffractometer ural ring sample table for use and comprises an outer ring fixing frame, the outer ring fixing frame is provided with a center through hole, and an objective table is arranged in the center through hole; the top of the objective table is used for bearing and fixing an object to be measured, and the height position of the objective table can be adjusted in the axial direction of the center through hole. According to the invention, the position adjustment of the object to be detected on the objective table is realized through the axial adjustment of the height position of the objective table, so that the object to be detected can be ensured to be adjusted to the required position of the diffractometer detection head while the positioning of the object to be detected is realized; therefore, the operation difficulty in the process of measuring the residual stress of the wall surface by using the diffractometer eucalyptus ring sample table is effectively reduced, and the measurement efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of wall surface residual stress test fixture design, and in particular relates to a wall surface residual stress test fixture and an operating method thereof. Background technique [0002] Residual stress is a kind of internal stress. Internal stress refers to when various factors that generate stress no longer exist (such as removal of external load, completion of processing, uniform temperature, termination of phase transformation process, etc.), due to deformation and uneven volume change. Stresses that remain within a component and are self-balancing. [0003] Residual stress is closely related to fatigue strength, stress corrosion resistance and dimensional stability of components. For example, the residual stress caused by welding can deform the component, and the surface tension of the working component in a special medium will cause stress corrosion. The residual stress generated by heat treatment o...

AI Technical Summary

Problems solved by technology

For the residual stress on the wall surface, most of the currently disclosed technical solutions adopt the method of sticking strain gauges to obtain it. The method is complicated to operate and cumbersome to calculate, which is not conducive to the measurement of residual stress

However, the residual stress on the wall surface can be obtained very conveniently by X-rays on the Ula-ring sample stage of a diffractometer, but the lack of a positioning and clamping device for the object to be measured in the prior art makes the measurement process of the residual stress difficult to operate. Measurement efficiency is low

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