Determination method based on single-sided crack central hole wedge-type specimen
A measurement method and center hole technology, which can be used in measurement devices, instruments, scientific instruments, etc., can solve the problems of low accuracy of test results, and achieve easy application and popularization, low cost, and simple experimental principle and data processing. Effect
Active Publication Date: 2022-04-22
SOUTHWEST JIAOTONG UNIV
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Aiming at the above-mentioned deficiencies in the prior art, the measurement method based on the single-side crack center hole wedge-type sample provided by the present invention solves the problem of low accuracy of the detection results of the traditional method
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0055] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0056] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, the determination method based on the unilateral crack central hole wedge-type sample includes the following steps:
[0057] S1. Set a pair of protruding cotter pins on the base, and place the crack of the single-side crack center hole wedged sample through the protrusion of the cotter pin on the cotter pin;
[0058] S2. Align the wedge-shaped pressu...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a measuring method based on a single-sided crack central hole wedge-in type sample, which includes setting the corresponding positions of the single-sided crack central hole wedge pattern, cotter pin and base, and using a wedge-shaped pressing rod to perform I-type cracks on the pattern Loading: Obtain the displacement in the loading direction and the force in the loading direction of the wedge-shaped specimen with a single-sided crack center hole, and draw the sharp crack of the wedge-shaped specimen with a single-side crack center hole Load-displacement curve; Obtain the blunt crack loading parameters of the single-side crack center hole wedge-type sample, and obtain the blunt crack load-displacement curve of the single-side crack center hole wedge-type sample through finite element calculation; carry out the collected parameters The equivalent stress-strain curve and fracture toughness value of the material of the single-sided crack central hole wedge-type specimen are obtained through processing and calculation. The invention improves the accuracy of measurement results, has simple data processing, low cost and is convenient for popularization and application.
Description
technical field [0001] The invention relates to the field of evaluation of material ductility and fracture toughness, in particular to a measurement method based on a single-side crack central hole wedged sample. Background technique [0002] In petrochemical, nuclear power, aerospace and other fields, there are a large number of components serving under high temperature, high pressure, irradiation and other conditions. With the growth of time, the materials will inevitably undergo creep, oxidation, corrosion and other phenomena, resulting in material degradation and damage, how to evaluate the reliability and safety of materials is of great significance. The traditional method is to conduct non-destructive testing or sampling tests on service components. Non-destructive testing can detect the uniformity and micro-defects of the structure, but it cannot quantitatively give many mechanical performance parameters of the material, such as yield strength, tensile strength and fr...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/00
CPCG01N3/00G01N2203/0067G01N2203/0075G01N2203/0216G01N2203/027
Inventor 巫元俊包陈徐习凯蔡力勋
Owner SOUTHWEST JIAOTONG UNIV