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Vol.23, No.1, 2023, pp. 9–13 |
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TENSILE TESTING OF FLAT THIN SPECIMENS USING THE TWO-DIMENSIONAL DIGITAL IMAGE CORRELATION METHOD Nenad Mitrović1*, Aleksandra Mitrović2, Milan Travica3 1) University of Belgrade, Faculty of Mechanical Engineering, Centre for Optical Measurement, Belgrade, SERBIA *email: nmitrovic@mas.bg.ac.rs 2) Academy of Technical Vocational Studies, Belgrade, SERBIA 3) University of Belgrade, Innovation Centre of the Faculty of Mechanical Engineering, Belgrade, SERBIA
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Abstract Conventional tensile testing is most commonly used for determining the basic mechanical properties of the material. However, this approach is challenging for in-depth analysis of material behaviour, especially related to heterogeneous materials. The Digital Image Correlation (DIC) method is a contactless optical method that overcomes the constraints of traditional experimental methods (e.g., strain gauge) and allows for full-field displacement and strain measurement. The paper specifically covers 2D-DIC application on tensile testing thin flat specimens prepared using cotton textile with 130 g/m2 density. Results show significant differences in von Mises strain values over the surface of the specimen, ranging from 8 to 24 %. The application of 2D-DIC in this case shows the significance of full-field analysis, as conventional usage of the tensile test would have missed the difference in mechanical properties of adjacent areas on the same specimen. 2D-DIC provides high spatial resolution, accuracy, real-time data acquisition, and visualization, making it a valuable tool for characterizing mechanical properties of thin flat specimens and understanding deformation mechanisms. Keywords: 2D Digital Image Correlation, tensile testing, flat thin specimens, textile |
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full article (423 kB)
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