Material component high temperature deformation noncontact measurement system and method

Abstract

The present invention discloses a material component high temperature deformation noncontact measurement system. The system comprises a laser, a spatial filter, an industrial CCD (Charge Coupled Device) camera and an image processor. The laser beam emitted by the laser is illuminated through the spatial filter to the central surface of a test piece in the initial temperature to obtain an initial laser speckle; the CCD camera is configured to obtain a reference image and a deformation image; and the image processor employs the method related to digital images to calculate the deformation displacement field of the reference image relative to the deformation image. According to the embodiment of the invention, the material component high temperature deformation noncontact measurement method effectively improve the precision of the material component high temperature noncontact deformation measurement in the high temperature and is wide in the temperature application range so as to provide a new thinking for the mechanical property of the high-temperature environment measurement material components.

Description

technical field [0001] The invention relates to the technical field of photomechanics, in particular to a non-contact measurement system and method for high-temperature deformation of material components. Background technique [0002] In metallurgy, electric power, aerospace and many other fields, strain measurement technology in high temperature environment is one of the key technologies for evaluating the thermodynamic properties of high temperature material structures. There are two types of strain measurement: "contact" and "non-contact". [0003] The traditional "contact measurement" method based on strain gauges has difficulties in strain element screening, connection, and error compensation when performing high-temperature strain measurement. The measurement method based on high-temperature extensometers has large compression deformation measurement errors and small specimen fixtures. Difficult design, large loss in use under high temperature and other limitations. ...

AI Technical Summary

Problems solved by technology

The method of spraying inorganic adhesives is to use high-temperature inorganic adhesives to bond high-temperature-resistant particles on the surface of the specimen to form speckles. When the difference is large, the binding force becomes poor, resulting in varying degrees of deformation or even falling off of the speckle.

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