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Material parameter testing method and testing device

A test method and technology of material parameters, applied in the direction of measuring devices, thermal expansion coefficient of materials, analysis materials, etc., can solve the problems such as inability to effectively obtain material parameters, achieve the effect of reducing test items, simple test equipment, and reduced number of tests

Pending Publication Date: 2021-04-06
WEICHAI POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] This application discloses a testing method and testing device for material parameters, which are used to solve the problem in the prior art that material parameters in high temperature environments cannot be effectively obtained

Method used

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  • Material parameter testing method and testing device

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0056] The embodiment of the present application provides a test method for material parameters, the test method includes the following steps:

[0057] Step S11: Obtain the sample to be tested at a specific temperature t 1 The natural frequency test value and modal damping ratio test value under ;

[0058] Step S12: Determine the theoretical value of the natural frequency of the sample to be tested according to the test value of the natural frequency, and determine the theoretical ...

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Abstract

The invention relates to the field of material testing, and discloses a material parameter testing method and a testing device. The method comprises the following steps of obtaining an inherent frequency test value and a modal damping ratio test value of a to-be-tested sample at a specific temperature t, determining an inherent frequency theoretical value of the to-be-tested sample according to the inherent frequency test value, and determining a modal damping ratio theoretical value of the to-be-tested sample according to the modal damping ratio test value, determining the elasticity modulus, Poisson's ratio and thermal expansion coefficient of the to-be-tested sample according to the inherent frequency theoretical value of the to-be-tested sample, and determining the loss factor of the to-be-tested sample according to the modal damping ratio theoretical value of the to-be-tested sample. The testing method is used for solving the problem that material parameters in a high-temperature environment cannot be effectively obtained in the prior art.

Description

technical field [0001] The present application relates to the technical field of material testing, in particular to a testing method and testing device for material parameters. Background technique [0002] Metal matrix composites have the ability of impact resistance, wear resistance, corrosion resistance, high strength and high toughness, and are widely used in important fields such as automobiles, bearings, gears, engines and weapon industries; and most structural parts are usually in the At high temperature, the temperature will not only affect the mechanical properties of the material and its structure, but also affect its bearing capacity and strength limit. In order to better study the dynamic characteristics of metal matrix composite structures in thermal environments, it is necessary to establish relevant dynamic models, but the premise is to obtain materials such as elastic modulus, loss factor, Poisson's ratio, and thermal expansion coefficient in different temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/32G01N3/04G01N3/06G01H9/00G01N25/16
CPCG01N3/32G01N3/04G01N3/068G01N25/16G01H9/00G01N2203/0075G01N2203/0222
Inventor 吴怀帅胡亮田新伟赵志伟
Owner WEICHAI POWER CO LTD
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