2D and 3D Digital Image Correlation in Civil Engineering – Measurements in a Masonry Wall

Ramos, Tiago; Furtado, André; Eslami, Shayan; Alves, Sofia; Rodrigues, Hugo; Arêde, António; Tavares, Paulo J.; Moreira, P.M.G.P.

doi:10.1016/j.proeng.2015.08.061

Cited by 47 publications

(16 citation statements)

References 7 publications

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“…20 DIC has been used to measure strain in natural rock 21,22 and concrete. 23 It has been demonstrated that DIC could be a useful method to understand the propagation of cracking during rock strain testing of homogenous materials. 24,25 However, the technique relies upon the ability to define a region of interest (ROI) that can be observed consistently at different measurement epochs and from which movement patterns can be compared.…”

Section: Introduction: Principles and Methodology Of Strain Measurementsmentioning

confidence: 99%

Near infrared spectroscopic measurement of strain in rocks

Butcher¹,

Gibson²,

Benson³

et al. 2019

Journal of Near Infrared Spectroscopy

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The measurement of strain is a fundamental and widely studied parameter in engineering, rock mechanics, construction and materials testing. Contact sensors often used in these fields require contact with the target surface throughout the duration of a strain event. Non-contact methods typically require that that the measurement surface is prepared and often coated prior to testing. This paper considers the potential application of near infrared spectroscopy as a non-contact technique for the measurement of strain on natural surfaces. Excellent correlation was found between surface measurements of visible-NIR spectra and longitudinal strain taken during indirect Brazilian Disc Test for samples of sandstone, marble and basalt.

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Section: Introduction: Principles and Methodology Of Strain Measurementsmentioning

confidence: 99%

Near infrared spectroscopic measurement of strain in rocks

Butcher¹,

Gibson²,

Benson³

et al. 2019

Journal of Near Infrared Spectroscopy

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show abstract

“…This technique has been applied to both masonry materials (Drdácký et al, 2008) and entire members (Bejarano-Urrego et al, 2018;Thamboo et al, 2013). The use of DIC on masonry at the member scale has been generally used for the tracking of the formation of cracks and the evaluation of their width under increasing load, at which point the deformations are mostly concentrated at the failure lines and of a significant magnitude (Cotič et al, 2014;Nghiem et al, 2015;Ramos et al, 2015). A promising application of the method is for the evaluation of the elastic properties of the masonry composite in the elastic range under low loads and low strain magnitude.…”

Section: State Of the Artmentioning

confidence: 99%

Macro scale material characterisation in support of meso scale modelling of masonry under uniaxial in-plane loading

Drougkas¹,

Urrego²,

Roy³

et al. 2020

IJMRI

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The amount of detailed experimental data on the mechanical properties of brick masonry in the literature is limited regarding the orthotropic strength and fracture energy. A combined experimental/numerical methodology is proposed for the derivation of the macro scale properties of masonry. The experimental aspect deals with the mechanical characterisation of the individual materials, small masonry samples and masonry wallettes, including the relation of couplet to wallette strength. The numerical aspect is the calculation of the macroscopic properties of the masonry through discrete cracking calculations in two orthogonal directions. The numerical analysis results are compared with the experimental stress-strain results and Digital Image Correlation analysis. The Young's modulus and compressive fracture energy for the masonry composite are derived. The results are analysed in view of the resulting anisotropy of masonry and the obtained failure modes.

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“…igital image correlation (DIC) offers unique opportunities for exploring full-field displacements and strain measurements of components subjected to various stresses (such as mechanical stresses or thermal stresses). This method is used for a variety of applications such as: large deformation measurements [13], crack analysis [14,15], stress -strain diagram definition for new materials [16], damage and failure mechanism evaluation [17,18], to measure of strain caused by temperature variations [19][20][21][22][23][24][25]. The basic principle of DIC operation is that after collecting the images during the application of the various loads, a comparison of the images is made following what happens with the points of random pattern divided into several subgroups compared to the image in which the surface is undeformed, Fig.…”

Section: Digital Image Correlation (Dic)mentioning

confidence: 99%

Analysis of Printed Circuit Boards strains using finite element analysis and digital image correlation

Marșavina

Falk

Pop

2019

Frattura Ed Integrità Strutturale

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This paper investigates the use of digital image correlation (DIC) and finite element analysis for strain measurement on Printed Board Circuits (PCBs). Circuit boards (PCBs) are designed to mechanically support and electrically connect an electronic component assembly. Due to screw assemblies, the surface level differences on which the PCB is placed, the process of assembling the electronic components induces a certain state of stress and deformation in the PCB. The main components affected are microprocessors due to the way they are glued to PCBs with BGA-Ball grid arrays (BGA). Digital Image Correlation (DIC) is a full-field contactless optical method for measuring displacements and strain in experimental testing, based on the correlation of images taken during test. The experimental setup is realized with Dantec Q-400 system used for image capture and Istra 4D software for image correlations and data analyses. The maximum level of the obtained strain is compared with the allowable limit. Finite element analysis (FEA) is a numerical method of analysis for stresses and strain in structures of any given geometry.

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2D and 3D Digital Image Correlation in Civil Engineering – Measurements in a Masonry Wall

Cited by 47 publications

References 7 publications

Near infrared spectroscopic measurement of strain in rocks

Near infrared spectroscopic measurement of strain in rocks

Macro scale material characterisation in support of meso scale modelling of masonry under uniaxial in-plane loading

Analysis of Printed Circuit Boards strains using finite element analysis and digital image correlation

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