Digital Image Correlation

Our new paper on fluorescent DIC comes out!

A new speckle pattern fabrication method is proposed in this paper, by using an off-the-shelf handheld inkjet printer. By printing, the speckle pattern quality will no longer depend heavily on the operator. A good quality control is achieved. This method can be used for both fluorescent and classic speckles preparation. The former, published on [APL 2020](https://aip.scitation.org/doi/10.1063/5.0016384), has distinguish advantages and we highly recommend for general use.

Rapid and Repeatable Fluorescent Speckle Pattern Fabrication Using a Handheld Inkjet Printer

Background: compared with regular speckle patterns formed by reflecting the illumination light, fluorescent speckle patterns generated by the emitted light of fluorescent particles offer distinct advantages of specular reflection elimination, high …

Heatwave distortion correction using an improved reference sample compensation method and multispectral digital image correlation

Heatwave distortions, caused by unevenly distributed temperature and refractive index in the optical path, unavoidably occur in high-temperature digital image correlation (DIC) measurement. To eliminate these distortions, a multispectral DIC-aided …

Fluorescent 2D Digital Image Correlation With Built‐in Coaxial Illumination for Deformation Measurement in Space‐constrained Scenarios

An advanced two-dimensional digital image correlation (2D-DIC) using active imaging and telecentric imaging has been proposed to overcome the problems of out-of-plane motion and ambient light variation. Here, the technique is further improved by …

Enhanced digital gradient sensing using backlight digital speckle target

Digital gradient sensing (DGS) is a non-contact and full-field optical measurement technique, which assesses mechanical behaviors of transparent materials or specular structures by measuring angular deflections of light rays. However, owing to the …

New exploration and application of fluorescent digital image correlation

High-throughput measurement of coefficient of thermal expansion using a high-resolution digital single-lens reflex camera and digital image correlation

High-throughput measurement of thermal deformation and determination of coefficient of thermal expansion (CTE) using a high-resolution digital single lens reflex (DSLR) camera and digital image correlation (DIC) is described. To mitigate the mosaic …

New exploration and application of fluorescent digital image correlation

Fluorescent digital image correlation applied for macroscale deformation measurement

Fluorescent digital image correlation (DIC) has been implemented on monocular and binocular fluorescence microscopes for shape and deformation measurements at the microscale and even the nanoscale by tracking fluorescent particles. This technique, …

High-throughput CTE determination of bulk materials based on DSLR and DIC (in Chinese)