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System and method for determining fiber fracture surface rate of impact specimen fracture

A technology for impacting specimens and fiber sections, applied in the field of measurement systems, can solve problems affecting measurement accuracy, low work efficiency, large position deviation, etc., and achieve the effect of reducing labor intensity and improving work efficiency

Inactive Publication Date: 2016-03-30
UNIV OF JINAN
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Problems solved by technology

When placing the sample to keep coincident with the center line of the CMOS camera lens, the measurement personnel need to manually move the sample to adjust the position, which is time-consuming, and the position deviation is large, which affects the measurement accuracy
When measuring a series of specimen fractures, manually searching for the boundaries of the crystalline region will increase the labor intensity of the measurement personnel and reduce work efficiency

Method used

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  • System and method for determining fiber fracture surface rate of impact specimen fracture
  • System and method for determining fiber fracture surface rate of impact specimen fracture
  • System and method for determining fiber fracture surface rate of impact specimen fracture

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Embodiment Construction

[0032] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0033] The system for measuring the fiber section rate at the fracture surface of the impact sample of the present invention includes:

[0034] The impact sample fracture fiber section image acquisition device, the impact sample fracture fiber section image acquisition device is used to collect the fiber section image of the impact sample fracture set on the rotary table and transmit it to the central processing unit, and the central processing unit uses The gray level, regional feature enhancement, binarization and denoising processing are performed on the acquired image, the crystal region boundary of the fiber section is extracted, and finally the fiber section ratio of the impact sample fracture is obtained.

[0035] Such as figure 1 As shown, the impact sample fracture fiber section image acquisition device includes a base plate 10, and the base plate 1...

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Abstract

The invention discloses a system and a method for determining a fiber fracture surface rate of an impact specimen fracture. The method comprises the following steps: step (1), acquiring an image meeting pre-set definition requirements of the impact specimen fracture by adopting a fracture fiber fracture surface image acquisition device of the impact specimen fracture; step (2), converting the acquired image of the impact specimen fracture into an impact specimen fracture gray level image, and carrying out enhanced region characteristic algorithm processing on the impact specimen fracture gray level image; step (3), generating a binarization image; removing speckles from the binarization image to obtain a fracture surface original cross-sectional area and an area surrounded by a crystalline region boundary; step (4), solving a difference value of the original cross-sectional area of the impact specimen fracture surface and the area surrounded by the crystalline region boundary; solving a specific value of the obtained difference value and the original cross-sectional area of the impact specimen fracture surface, and acquiring the fiber fracture surface rate of the impact specimen fracture. With the adoption of the system and the method, provided by the invention, the crystalline region boundary can be automatically found and the working efficiency is improved.

Description

technical field [0001] The invention relates to a measuring system, in particular to a system and a method for measuring the fracture fiber section rate of an impact sample. Background technique [0002] The fracture fiber section ratio of impact specimens is an important parameter for evaluating the impact fracture resistance of components, and it points out the direction for improving design and processing technology, and rational selection of materials. The traditional methods for measuring the fiber section ratio at the impact fracture include the comparison method and the vernier caliper method. The comparison method: compare the sample fracture with the fiber section ratio map given in the national standard, and estimate the fiber section ratio. Vernier caliper measurement method: regard the fracture crystalline area of ​​the sample as a rectangle or trapezoid, look up the table after measuring the length, and calculate the fiber section ratio. These two methods are i...

Claims

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Application Information

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IPC IPC(8): G01N3/06G01N3/30
Inventor 王玉增王华峰曹若兰董晓晓仲强
Owner UNIV OF JINAN
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