A Cross-Dichroic-Prism-Based Multi-Perspective Digital Image Correlation System

Dan, Xizuo; Li, Junrui; Zhao, Qihan; Sun, Fangyuan; Wang, Yonghong; Yang, Lianxiang

doi:10.3390/app9040673

Cited by 9 publications

(10 citation statements)

References 21 publications

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“…The issue of calibrating several independent benches using valuable CAD information is discussed in [11]. Conversely, when non-planar tests are to be instrumented at small scales or in conditions of difficult access, stereo can be used with a single camera by adapting the mounting with, for example, prisms and mirrors [12]. Another variant of DIC, which is still in its infancy, relies on X-ray based digital volume imaging.…”

Section: Advances In Dicmentioning

confidence: 99%

Special Issue on Advances in Digital Image Correlation (DIC)

Périé

Passieux

2020

Applied Sciences

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Section: Advances In Dicmentioning

confidence: 99%

Special Issue on Advances in Digital Image Correlation (DIC)

Périé

Passieux

2020

Applied Sciences

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“…Contemporary numerical models require precise measurements of experimental curves and strength parameters. DIC measurement is currently the most important and constantly developed non-contact strain measurement method [18][19][20][21]. Its most significant 3D version has been extended to numerous research fields, including standard materials such as metals, plastics or thermoplastics [22], advanced polymeric composites [23], and biological materials such as tissues [24] or carotid arteries [25].…”

Section: Introductionmentioning

confidence: 99%

Digital Image Correlation Analysis of Strain Fields in Fibre-Reinforced Polymer–Matrix Composite under ±45° Off-Axis Tensile Testing

Bogusz

2023

Polymers

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This study presents an experimental investigation of an in-plane shear of a glass lamina composite using a ±45° off-axis tension test. Typically, the shear stress curve, shear modulus, and in-plane shear strength for composite lamina-type materials are identified. Previous research indicated that a loading rate affects the strength of this composite. This study extends the existing literature by utilising a non-contact optical digital image correlation (DIC) method to measure strain distribution during the test. Two cross-head displacement rates were examined. The obtained strain maps reveal an uneven distribution resembling fabric texture. As the deformation progresses, the differences in the strain pattern increase. Subsequently, a quantitative analysis of the differences between regions with extreme (minimum and maximum) strain values and regions with average values was conducted. Based on these measurements, shear stress–strain curves, indicating variations in their courses, were constructed. These differences may reach several percent and may influence the analysis of numerical simulations. The DIC results were validated using strain gauge measurements, a commonly utilised method in this test. It was demonstrated that the location of the strain gauge installation impacts the results. During the tests, the occurrence of multiple microcracks in the resin was observed, which can contribute to the nonlinearity observed in the shear stress–shear strain curve.

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“…Logarithmic strains are more relevant in the case of high stra occurring in the necking area of the ductile metal alloy specimen than in the case of en neering strains [5,6]. DIC measurement is currently the most important noncontact strain measurem method and is constantly being further developed [7][8][9][10]. The most significant 3D vers is applied to research of standard metals, plastics, thermoplastics [11], advanced p meric composites [12], biological materials such as tissues [13] and carotid arteries [14 balloons [15].…”

Section: Introductionmentioning

confidence: 99%

“…Numerous examples of studies in which material strength investigations and mi fractography research were combined to extend the investigations can be found in contemporary literature [16][17][18][19][20], some of which deal with investigations at different t perature levels. DIC measurement is currently the most important noncontact strain measurement method and is constantly being further developed [7][8][9][10]. The most significant 3D version is applied to research of standard metals, plastics, thermoplastics [11], advanced polymeric composites [12], biological materials such as tissues [13] and carotid arteries [14] or balloons [15].…”

Section: Introductionmentioning

confidence: 99%

“…The most significant 3D version is applied to research of standard metals, plastics, thermoplastics [11], advanced polymeric composites [12], biological materials such as tissues [13] and carotid arteries [14] or balloons [15]. It can be observed, therefore, that DIC has become an important method in the field of experimental mechanics [7].…”

Section: Introductionmentioning

confidence: 99%

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Optical Strain Measurement and Microfractography of the Fractures of Armstal 550 Steel after Temperature Tensile Tests

2022

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A material strength investigation along with a detailed microfractography analysis of fractures formed during static tensile tests of steel Armstal 550 was performed. The tests in this research were conducted in a temperature range of 298 to 973 K. In addition, during tensile tests at ambient temperature, optical measurements of strain maps and the curvature of the neck were performed. The minimum cross-sectional diameter and the radius of the neck curvature during tensile tests were obtained. The data can be directly used to obtain the true stress–strain curve. The material property analysis confirmed the high strength of the Armstal 550 alloy. The ultimate strength at room temperature equals 2.14 GPa, whereas the yield point equals 1.65 GPa. A decrease in the strength parameters along with an increase in temperature was noted. This is a typical phenomenon related to a change in the density and thermal expansion of steel under the influence of the temperature increase. For example, at a temperature of 500 °C, the ultimate strength is more than 50% less than at room temperature. An in-depth analysis of the metallography and microfractography of fractures resulting from static tensile tests showed the formation of atypical nano- and microstructures with an elongated shape. Local nano- and microstructures were observed at different levels of intensity for different temperatures. The largest clusters of nanoparticles were present on the surfaces of the specimens examined at a temperature of 973 K. Scanning microscopy analysis confirmed the presence of molybdenum oxides.

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A Cross-Dichroic-Prism-Based Multi-Perspective Digital Image Correlation System

Cited by 9 publications

References 21 publications

Special Issue on Advances in Digital Image Correlation (DIC)

Special Issue on Advances in Digital Image Correlation (DIC)

Digital Image Correlation Analysis of Strain Fields in Fibre-Reinforced Polymer–Matrix Composite under ±45° Off-Axis Tensile Testing

Optical Strain Measurement and Microfractography of the Fractures of Armstal 550 Steel after Temperature Tensile Tests

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