Application of Image Analysis Technique in Visualization of Failure During the Testing Of Materials

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Strength of Materials Pub Date : 2024-07-29 DOI:10.1007/s11223-024-00658-0
H. Rupani, J. T. Chavda
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Abstract

In experimental investigations, conventional measuring instruments such as dial gauges, linear variable differential transformers, and extensometers are used to measure the displacement at a specific gauge length (i.e., global deformation). They are contact-based instruments which are not able to evaluate the displacements within the gauge length (i.e., localized deformations). The image analysis techniques are able to evaluate the displacements at each point within the gauge length. In the present study, the applicability and effectiveness of the image analysis technique are assessed for four different materials, i.e., concrete, steel, wood, and geomembrane which are widely used in the field of geotechnical engineering as construction material for geo-structures. For this, four different tests, i.e., compression testing of the concrete cube, tensile testing of the steel plate and wooden strip, and wide-width tensile testing of the geomembrane are performed in a systematic manner. The image analysis technique is used to evaluate the displacement fields for each material under given loading conditions. The results obtained from the image analysis technique are compared with those of conventional measuring instruments to emphasize the applicability and effectiveness of the image analysis technique for different materials having different properties.

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图像分析技术在材料测试过程中故障可视化中的应用
在实验研究中,刻度盘量规、线性可变差动变压器和拉伸计等传统测量仪器用于测量特定量规长度处的位移(即整体变形)。它们都是接触式仪器,无法评估量规长度范围内的位移(即局部变形)。而图像分析技术则能够评估量规长度内各点的位移。本研究评估了图像分析技术对四种不同材料的适用性和有效性,即混凝土、钢材、木材和土工膜,这四种材料作为土工结构的建筑材料被广泛应用于岩土工程领域。为此,系统地进行了四种不同的测试,即混凝土立方体的压缩测试、钢板和木条的拉伸测试以及土工膜的宽幅拉伸测试。图像分析技术用于评估每种材料在给定加载条件下的位移场。将图像分析技术得出的结果与传统测量仪器得出的结果进行比较,以强调图像分析技术对不同性质材料的适用性和有效性。
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来源期刊
Strength of Materials
Strength of Materials MATERIALS SCIENCE, CHARACTERIZATION & TESTING-
CiteScore
1.20
自引率
14.30%
发文量
89
审稿时长
6-12 weeks
期刊介绍: Strength of Materials focuses on the strength of materials and structural components subjected to different types of force and thermal loadings, the limiting strength criteria of structures, and the theory of strength of structures. Consideration is given to actual operating conditions, problems of crack resistance and theories of failure, the theory of oscillations of real mechanical systems, and calculations of the stress-strain state of structural components.
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