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, a new method based on optical flow analysis of video sequences has surfaced that can measure structural vibration without any surface preparation whatsoever, and the accuracy of the technique is evaluated for several sub-pixel vibration displacement amplitudes.
62 citations
TL;DR: In this paper, a 3D Digital Image Correlation (DIC) system is proposed to assess the deformation of railway tracks and the influence of motion similar to what might be found in a railroad service environment on the accuracy of the measurements is quantified.
62 citations
TL;DR: In this article, the authors developed an experimental procedure to determine the scatter of the macroscopic toughness of brittle materials using a standard three-point flexural test, which is used to analyze displacement fields of cracked samples.
Abstract: An experimental procedure is developed to determine the scatter of the macroscopic toughness of brittle materials. First, samples are precracked to obtain a sharp precrack. The toughness is then determined by using a standard three-point flexural test. Digital image correlation is used to analyze displacement fields of cracked samples. Based upon the resolution and the spatial resolution of the measurement technique, a detection criterion is proposed and validated. It allows for an accurate estimate of the crack tip location so that the presence of a crack and its size at arrest can be monitored. As an example, the toughness distribution of 18 samples made of silicon carbide is evaluated. By using a simple macro-micro transition, an analysis of the scatter in toughness is related to that in strength for the material with no macrocracks.
62 citations
TL;DR: In this paper, 3D Digital Image Correlation (DIC) was used to evaluate the evolution of deformation and strain in composite single lap-bonded joints prior to failure.
62 citations
TL;DR: The established single-camera stereo-DIC system only needs a single camera and presents strong robustness against variations in ambient light or the thermal radiation of a hot object, it demonstrates great potential in determining transient deformation in non-laboratory or high-temperature environments with the aid of a single high-speed camera.
62 citations