The invention relates to a stress test system based on a digital image correlation method and application thereof. The stress test system mainly comprises a digital camera, an imaging lens, a monochrome LED lighting source, a displacement platform, a camera support rod, a levelling instrument and a computer used for collection and analysis of a digital image, and the test process mainly comprises six steps. The test system has the characteristics of simple constitution, stable lighting source, easily adjustable height and direction of the digital camera, and the like. The specklegrams before and after drilling can be subjected to digital image correlation calculation, so that the test result can be obtained. The stress test system has the advantages of simplicity in operation, low test cost, high precision and the like. In the test process, a strain gage is not used, and the limitation that the strain gage is used for measuring the residual stress can be avoided. The system provided by the invention can be used for large/small scale test and overall/local test.

Stress test system based on digital image correlation method and application thereof

The invention discloses a gastric ulcer model evaluation method based on grey-scale image analysis The method comprises three steps, which are image collection, image conversion, and data processing and ulcer index calculation In the image collection step, a sample is placed in a dark box with a fixed volume and a fixed light source; and color (RPG) images are collected by shooting by using image collection tools such as a digital camera In the image conversion step, analysis software such as ImageJ is adopted, and the collected color images are subject to grey-scale image conversion, gastric mucosa region image selection and pixel statistics, and gastric ulcer region image selection and pixel statistics In the data processing and ulcer index calculation step, in units of pixel points, the percentage of the area of the gastric ulcer region in the mucous membrane gross area is calculated, and is adopted as the ulcer index for evaluating the gastric ulcer model With the method, rat/mice experimental gastric ulcer models can be accurately evaluated The method is also suitable for other image analysis and statistics with images as targets

Gastric ulcer model evaluation method based on grey-scale image analysis

The invention discloses a control method for simultaneously detecting content of nine components through a five wavelength merging method for licorice medicinal materials, which combines a modern analysis detecting method and a computer information merging method, accords with a principle of largest informatization, and effectively merges spectrum information and chromatograph information of index components so as to adopt a microscopic and comprehensive quantitative method to reflect the inner quantity of Chinese medicine materials The quality control method is simple to operate, stable, reliable and good in reappearance, can be used in evaluation and control of the quality of the Chinese medicine materials and development and research of novel medicines, and especially can serve as one of the indexes for quality control and authenticity identification of the licorice medicinal materials

Xiansheng Meng

Papers

Gastric ulcer model evaluation method based on grey-scale image analysis

Control method for simultaneously detecting content of nine components through five wavelength merging method for licorice medicinal materials