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A method and system for identifying mechanical characteristic parameters of hard coating materials

A technology of material mechanics and characteristic parameters, which is used in the analysis of materials, the use of sonic/ultrasonic/infrasonic waves for material analysis, and scientific instruments.

Active Publication Date: 2019-02-26
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above method needs to damage its material structure and is not easy to implement

Method used

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  • A method and system for identifying mechanical characteristic parameters of hard coating materials
  • A method and system for identifying mechanical characteristic parameters of hard coating materials
  • A method and system for identifying mechanical characteristic parameters of hard coating materials

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Embodiment Construction

[0045] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0046]In this embodiment, the Ti-6Al-4V thin shell structure is used as the matrix, and NiCoCrAlY+YSZ is used as the hard coating material to identify the mechanical property parameters of the hard coating material, that is, the storage modulus and loss of the hard coating composite thin shell structure. factor identification. The material parameters are shown in Table 1:

[0047] Table 1 Geometric and material parameters of thin shell structure and hard coating

[0048]

[0049] In this embodiment, the following system for identifying the mechanical characteristic parameters of the hard coating material is used to identify the mechanical characteristic parameters of the hard coating material. The block diagram is as follows figure 2 shown, including:

[0050] PCB hammer: used to perform hammering test on the thin shell structure be...

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Abstract

The invention provides a method and system for identifying mechanical characteristic parameters of hard coating materials. The method includes: establishing a finite element model of a hard coating composite thin shell structure; determining experimental data required to identify hard coating material parameters; determining energy storage The initial value of the modulus; determine the accurate value of the storage modulus of the hard coating material under different excitation amplitudes; determine the initial value of the loss factor; determine the accurate value of the loss factor of the hard coating material under different excitation amplitudes; calculate different excitations The maximum equivalent strain value under the amplitude; draw the strain-dependent characterization curve of the mechanical parameters of the hard coating material. The system includes: PCB hammer, vibration table excitation system, LMS test system, workstation, and laser sensor. The present invention adopts the inverse method of matching the experimentally measured natural frequency and resonance response with the theoretical calculation values ​​to effectively identify the storage modulus and loss factor of the hard coating material, and respectively provides the methods for determining the storage modulus of the hard coating. The method of measuring and initial values ​​of loss factors greatly improves calculation efficiency.

Description

technical field [0001] The invention relates to the technical field of material mechanics, and relates to a method and system for identifying mechanical characteristic parameters of hard coating materials. Background technique [0002] Hard coating refers to coating materials made of metal base, ceramic base or a mixture of the two, and is currently mainly used for thermal barrier, anti-friction and anti-corrosion. In recent years, studies have found that hard coatings can reduce the vibration stress of thin-shell components in high-temperature, high-corrosion environments. Therefore, research on hard coating damping and vibration reduction has attracted more and more attention. In order to better implement hard coating damping and vibration reduction, it is necessary to create a dynamic analysis model of the hard coating composite structure, based on this analysis model to achieve effective prediction and design of the hard coating vibration reduction performance. The key ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04G01N29/09G01N29/12
CPCG01N29/04G01N29/045G01N29/09G01N29/12G01N2291/018G01N2291/023
Inventor 孙伟杨雪李晖王茁
Owner NORTHEASTERN UNIV LIAONING
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