Three-dimensional calibrating measurement device for neutron diffraction stress analysis

Abstract

The present invention provides a three-dimensional calibrating measurement device for neutron diffraction stress analysis. The three-dimensional calibrating measurement device can move with multi-degree of freedom by utilizing a three-dimensional scanner matched with a sample table firstly; scanning images of samples on the sample table are collected into a computer for building a three-dimensional model of each sample; sub-net treatment is performed on each three-dimensional model, and each net grid is allocated with a unique identification; any target net grid is selected from the three-dimensional model in a manual or automatic mode, the movement of the sample table is controlled by a movement control program set in the computer, so as to enable an entrance slit to be aligned to the corresponding target net grid, at the same time, each diffraction slit, a corresponding collimator and a corresponding neutron detector move to corresponding positions, a neutron source emits a neutron beam, and neutron diffraction stress measurement is started. The three-dimensional calibrating measurement device can be used for achieving precise three-dimensional calibrating on the samples, is low in space requirement, and free of additional installation of datum mark light sources, avoids introduction of additional errors, and can reach the position accuracy up to 100 mu m for detected samples.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for accurate measurements on small samples without requiring extra equipment or lights at different angles during testing. It uses an apparatus that moves multiple degrees horizontally while measuring strain accurately by calculating its displacement based upon how much force it applies when placed under tension.

Problems solved by technology

Technological Problem: Neutral Stress Analysis (NSA) involves studying how microstructure affects mechanical properties such as strength and durability during manufacturing processes. However, current methods require multiple steps involving measuring tensile stresses at specific locations before finalizing them. Additionally, existing techniques involve analyzing small sections of specimen by cutting openings and observing their change over time due to external forces like impact pressure. There is thus a desire for improved accuracy in NSAA measurements without requiring complicated procedures.

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