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Digital image correlation

About: Digital image correlation is a research topic. Over the lifetime, 7842 publications have been published within this topic receiving 132166 citations.


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Journal ArticleDOI
TL;DR: Based on the digital image correlation (DIC) method, uniaxial compression tests are carried out on rock-like specimens with various arrangements of two parallel cracks, and the full-field strain and failure features of the rocklike materials are observed and analyzed by a self-developed code.
Abstract: The cracks in a rock tend to initiate, propagate, and coalesce under loading. Based on the digital image correlation (DIC) method, uniaxial compression tests are carried out on rock-like specimens with various arrangements of two parallel cracks. The full-field strain and failure features of the rock-like materials are observed and analysis by a self-developed code. Two process zones are defined according to the differences between the shear strain field and the tensile strain field: a shear process zone and a tensile process zone. The following results are obtained in this study. (1) Three coalescence modes can be observed using the DIC method: a shear coalescence mode, a tensile coalescence mode, and a mixed coalescence mode. (2) At the microscopic level, the bridge angle and crack arrangement affect the formation of the process zone; at the macroscopic level, they determine the crack propagation path and the failure mode. (3) The peak strength of the rock-like specimen is related to the crack inclination angle and the bridge angle. (4) Numerical modeling by the expanded distinct element method and the strain strength criterion simulates the different coalescence modes of the experimental study efficiently.

82 citations

Journal ArticleDOI
TL;DR: In this paper, the global anisotropy of the friction stir welded (FSW) AA2024-T3 sheets was investigated by using the digital image correlation method to obtain r -values.

82 citations

Journal ArticleDOI
TL;DR: A DIC technique is reported to investigate the local distribution of mechanical strain within regenerating soft tissue sections and shows concentrations of up to four times the applied strain that reflected boundaries between hard and soft callus.

82 citations

Proceedings ArticleDOI
28 May 2013
TL;DR: In this paper, a new experimental method has been developed to achieve constant strain rate in the neighborhood of 1 to 100 sec-1 during the entire deformation history for SAC105 and SAC305 alloys.
Abstract: Electronics subjected to shock and vibration may experience strain rates of 1-100 sec-1. High strain rate data is scarce for leadfree solders at strain rates in the range of 1-100 sec-1, typical of drop-impact, shock and vibration. A new experimental method has been developed to achieve constant strain rate in the neighborhood of 1 to 100 sec-1 during the entire deformation history. SAC105 and SAC305, which are two of the widely used leadfree alloys, have been tested at strain rates of 10, 35, 50 and 75 per sec. Effect of aging on the high strain rate properties has also been quantified by subjecting the test specimen to thermal aging for varied periods of time at various temperatures. The leadfree solders have been exposed to constant temperatures of 25°C, 50°C, 75°C, 100°C and 125°C for 1 day, 30 days and 60 days prior to high strain-rate test. Full-field strain in the specimen has been measured using high speed imaging at frame rates up to 75,000 fps in combination with digital image correlation. The cross-head velocity has been measured prior-to, during, and after deformation to ensure the constancy of cross-head velocity. Experimental data for the unaged and the aged specimen has been fit to the non-linear Ramberg-Osgood model using two methods.

81 citations

Journal ArticleDOI
TL;DR: In this article, the response of E-Glass/Vinyl ester curved composite panels subjected to underwater explosive loading has been studied using a 3D Digital Image Correlation (DIC) system, along with high speed photography.

81 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023582
20221,120
2021667
2020646
2019636
2018567