This paper presents and compares two combined experimental-numerical techniques for the investigation of fracture properties additively manufactured polymer parts using digital image correlation (DIC) measurements. The first method only uses measured kinematic fields, second is based on finite element simulations driven by boundary conditions. A mini single edge notched tensile sample fused fil...

Abstract Background The association of advanced digital image correlation (DIC) and numerical simulation has been widely used for inverse parameter identification. Objective It is attractive to develop an accurate DIC method sharing the common features with simulation, which can lead better synergy between experiments simulations. Methods A new meshfree (MF-DIC) using element free Galerkin (EFG...

Inter-frame structural motions are required to be small for classic Digital Image Correlation (DIC) algorithms, which severely limits the application of technique in large rotation cases. To solve problem, multiple methods obtain initial guesses deformation parameters have been introduced over recent years. However, success rate is still limited by angles and efficiency low due extra calculatio...

In full-field 3D displacement measurement, stereo digital image correlation (Stereo-DIC) has strong capabilities. However, as a result of difficulties with camera calibration and surface merging, 360-deg panoramic measurements remain challenge. This paper proposes field measurement method in order to accurately measure the shape complex shaped objects natural textures. The proposed is based on ...

Seedless velocimetry is gaining interest in many industrial and research applications. We report on a comparative study of time-resolved optical using traditional, mirror-type knife-edge schlieren optics versus Background-Oriented Schlieren (BOS) subsonic round turbulent helium jets air at Red = 5,890 11,300. Digital images with 1024 pixels streamwise resolution (0 < x/d 200) were captured 6000...

Oil-Palm industry produces some side products as solid waste which consist of 23% empty oil palm bunches, 6.5% shell, and 13% fiber from the main products. Reusing is very important to increase economic value reduce potential pollution. One ways exploit Oil Palm Shell (OPS) byproduct substitute uses natural coarse aggregate in concrete structure building material. Study on use fly ash one admix...

This article presents an open-source Integrated Digital Image Correlation (I-DIC) software written in Python using CUDA-enabled GPUs designed to run at high (1–100 Hz) frequency. The field computation is performed a global approach and the result projection of real user-defined base fields. can be used many applications one use experimental mechanics demonstrated by driving bi-axial tensile tes...

The study presents an experimental and numerical evaluation of bend-twist elastic coupling in composite passive-adaptive structures. Due to the lack of experimental validation in Fluid Structure Interaction (FSI) investigations, a full-field deformation of an aerofoil-shaped section under wind loading is measured. The experimental analysis is carried out at the University of Southampton 3.5 m ×...

This work examines the crack initiation and propagation in Prestressed Concrete (PC) beams by a combined experimental numerical approach. Four-point bending tests performed on PC sleepers lead to formation of multiple cracks, number that depends specimen. The location each fracture its growth with time is monitored Digital Image Correlation (DIC). experiments are simulated finite element approa...