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A kind of metal material bending fatigue test method

A technology of bending fatigue and test method, which is applied in the field of fatigue test to achieve the effect of shortening the test cycle and scientific research cycle

Active Publication Date: 2019-03-08
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a metal material bending fatigue test method to solve or at least alleviate at least one problem in the background art

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  • A kind of metal material bending fatigue test method
  • A kind of metal material bending fatigue test method
  • A kind of metal material bending fatigue test method

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Embodiment Construction

[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. 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. Embodiments of the present invention will be described in detail below ...

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Abstract

The invention discloses a testing method for bending fatigue of a metal material. The testing method for the bending fatigue of the metal material comprises the following steps: S1, selecting a foil gauge and bonding the foil gauge onto a test piece; S2, installing the test piece onto a shake table and marking the clamping part and clamp force of the test piece; S3, carrying out bending fatigue testing with a strain value as a control value and changing actual testing frequency to allow the strain value to maintain unchanged when the strain value changes; S4, when actual testing frequency deviates from predetermined testing frequency and reaches set deviation, checking the foil gauge and carrying out flaw detection on the test piece; S5, recording the damage time of the test piece and calculating the bending frequency of the test piece; S6, selecting a group of same test pieces and repeating the steps S1 to S5; and S7, drafting a curve chart of the bending frequency and service life of the test pieces. The invention has the beneficial effect that a testing period is substantially shortened and a scientific research period of a novel product is shortened since a vibration manner is employed for bending fatigue testing of the material.

Description

technical field [0001] The invention relates to the field of fatigue test technology, in particular to a metal material bending fatigue test method. Background technique [0002] With the development of science and technology, more and more new materials are used in aircraft manufacturing. To apply new materials in aviation manufacturing, various tests need to be completed. Material bending fatigue test is one of them. As we all know, the bending of materials Fatigue test is a test with long test period, large dispersion of test data, and difficult to detect cracks in time. Contents of the invention [0003] The purpose of the present invention is to provide a metal material bending fatigue test method to solve or at least alleviate at least one of the existing problems in the background art. [0004] The technical solution of the present invention is to provide a metal material bending fatigue test method comprising the following steps: S1, select the strain gauge, bond ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/32
CPCG01N3/32
Inventor 黄志敏孙晓铭
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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