应用显微数字图像相关技术测定PMMA试样中的应力集中效应

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materiale Plastice Pub Date : 2022-07-01 DOI:10.37358/mp.22.2.5591

C. Stochioiu, Victor-Marian Marinescu, D. Tudose, A. Hadar

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引用次数: 0

摘要

本文分析了利用数字图像相关技术研究小尺度构件力学行为的可能性。在放大设备上增加了一台显微镜和一台微型拉伸试验机。对几种已有应力集中器的样品进行了分析。为了进行对比，在适当的加载条件下，建立了几何形状的有限元模型，并对其应变场进行了比较，以便与实验结果进行验证。结果表明，该方法可以获得准确的读数。此外，裂纹的萌生和扩展路径可以通过在该区域出现高应变来确定。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Determination of Stress Concentration Effects Using Micro-Digital Image Correlation Techniques in PMMA Specimens

The present paper analyses the possibility of using the digital image correlation technique to study the mechanical behavior of small scale components. A microscope is supplemented to the equipment for magnification, together with a miniature tensile testing machine. Several samples with already studied stress concentrators were analyzed. For comparison purposes, a finite element model of the geometry, with appropriate loading conditions, is created and the strain field is compared, in orderv to be validated to the experimental one. Results show that an accurate reading can be made by using this technique. Furthermore, crack initiation and its propagation path can be determined, by the appearance of high strains in the region.

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来源期刊

Materiale Plastice MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.40

自引率

25.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Materiale Plastice, abbreviated as Mater. Plast., publishes original scientific papers or guest reviews on topics of great interest. The Journal does not publish memos, technical reports or non-original papers (that are a compiling of literature data) or papers that have been already published in other national or foreign Journal.