Topic
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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TL;DR: In this article, high strain localization was observed predominantly in the regions filled by the polymer binder surrounding the sugar crystals and the damage evolution was quantified by calculating the Poisson's ratio and volumetric strain as a function of loading.
42 citations
TL;DR: In this article, the authors report experimental results on the mechanical response of dissimilar tailor-welded blanks (TWBs) from an advanced-and an ultra-high-strength steel for automotive applications.
42 citations
TL;DR: An improved Speckle projection profilometry that combines the projection of computer generated random speckle patterns using an ordinary LCD projector and the two-dimensional digital image correlation technique for in-plane displacements measurement is proposed for accurate out-of-plane shape and displacement measurements.
Abstract: An improved speckle projection profilometry that combines the projection of computer generated random speckle patterns using an ordinary LCD projector and the two-dimensional digital image correlation technique for in-plane displacements measurement is proposed for accurate out-of-plane shape and displacement measurements. The improved technique employs a simple yet effective calibration technique to determine the linear relationship between the out-of-plane height and the measured in-plane displacements. In addition, the iterative spatial domain cross-correlation algorithm, i.e., the improved Newton-Raphson algorithm using the zero-normalized sum of squared differences correlation criterion and the second-order shape function was employed in image correlation analysis for in-plane displacement determination of the projected speckle patterns, which provides more reliable and accurate matching with a higher correlation coefficient. Experimental results of both a regular cylinder and a human hand demonstrate that the proposed technique is easy to implement and can be applied to a practical out-of-plane shape and displacement measurement with high accuracy.
42 citations
TL;DR: In this article, a failure analysis of woven fabric carbon-reinforced polymeric composites under tensile and flexural loading was performed. And the authors used the GAP function to find the optimal number of clusters for acoustic emission data, which is suitable for classifying elongated data points in the vector space of acoustic data.
42 citations
TL;DR: In this paper, a 3D-DIC system was used to measure the thermal deformation of a tungsten sample above 3000 °C, and three schemes based on blue light sources, self-radiating light sources and a dual wavelength optical filter were designed for three temperature ranges from room temperature to 3067 °C.
42 citations