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Non-contact material hardness measuring method based on ultrasonic waves

A non-contact, measurement method technology, applied in the direction of using sonic/ultrasonic/infrasonic waves to analyze solids, measuring devices, analyzing materials, etc., can solve problems such as workpiece damage, and achieve the effect of short time and high accuracy

Inactive Publication Date: 2019-02-01
韦士肯(厦门)智能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned conventional metal hardness testing methods all need to directly contact the metal workpiece to be tested, which will inevitably cause damage to the workpiece

Method used

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  • Non-contact material hardness measuring method based on ultrasonic waves
  • Non-contact material hardness measuring method based on ultrasonic waves
  • Non-contact material hardness measuring method based on ultrasonic waves

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] Such as figure 1 As shown, the present invention provides a non-contact material hardness measurement method based on ultrasonic waves, comprising the following steps:

[0027] S10: Detecting the workpiece to be measured by ultrasonic waves, obtaining ultrasonic echo signals and backscattering signals, so as to obtain ultrasonic characteri...

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Abstract

The invention provides a non-contact material hardness measuring method based on ultrasonic waves. The method comprises the steps of: acquiring an ultrasonic echo signal and a backscattering signal bydetecting the workpiece to be detected by an ultrasonic longitudinal wave echo method, thereby obtaining ultrasonic characteristic parameters; calculating the average grain size of the workpiece to be detected according to the obtained ultrasonic characteristic parameters; and obtaining the hardness value of the workpiece to be detected based on the obtained average grain size and a correlation fitting function between the workpiece hardness value and the workpiece grain size. According to the non-contact material hardness measuring method based on ultrasonic waves, it is not necessary to directly contact the workpiece to be detected, and thus does not cause damage to the workpiece. Moreover, several characteristic parameters fed back by the ultrasonic wave detection of the workpiece arecomprehensively considered to ensure that the hardness value of the workpiece obtained by detection has high accuracy. At the same time, the time required for the detection is short, and the hardnessvalue of a large number of workpieces can be measured quickly and non-destructively.

Description

technical field [0001] The invention relates to the field of hardness detection of metal materials, in particular to an ultrasonic-based non-contact material hardness measurement method. Background technique [0002] Metal hardness is one of the most commonly used indicators to evaluate the mechanical properties of metal materials. The essence of hardness is the ability of a material to resist the intrusion of another harder material. It is the comprehensive performance of various physical quantities such as elasticity, plasticity, strength, toughness and wear resistance reflected by the tested material under the action of a certain indenter and test force. . Since the hardness test can reflect the performance difference of metal materials under different chemical composition, structure and heat treatment process conditions, the hardness test is widely used in the inspection of metal properties, the supervision of heat treatment process quality, the development of new mater...

Claims

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Application Information

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IPC IPC(8): G01N29/07G01N29/11G01N29/12G01N29/04G01N21/84
CPCG01N21/84G01N29/04G01N29/07G01N29/11G01N29/12G01N2291/011G01N2291/014G01N2291/015G01N2291/0234G01N2291/028G01N2291/044
Inventor 陈金贵
Owner 韦士肯(厦门)智能科技有限公司
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