Characterization of timber fracture using the Digital Image Correlation technique and Finite Element Method

Dubois, Frédéric; Méïté, Mamadou; Pop, Octavian; Absi, Joseph

doi:10.1016/j.engfracmech.2012.07.008

Cited by 32 publications

(9 citation statements)

References 28 publications

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“…Digital image correlation (DIC) analyses have been successfully used to study crack initiation and development in small-scale specimens [126] and full-scale timber elements [127]. However, given the strict requirements regarding rigid camera fixing, lighting, surface preparation, and system calibration, the use of DIC to assess crack initiation and development has been mostly limited to laboratory studies.…”

Section: Optic Methodsmentioning

confidence: 99%

Structural health monitoring of timber structures – Review of available methods and case studies

Palma

Steiger

2020

Construction and Building Materials

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Section: Optic Methodsmentioning

confidence: 99%

Structural health monitoring of timber structures – Review of available methods and case studies

Palma

Steiger

2020

Construction and Building Materials

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“…Strain transfer analysis of optical fiber based sensors embedded in an asphalt pavement structure correlation method (DIC), optical fiber sensing techniques, etc. However, GPR is vulnerable to the electromagnetic waves of vehicles in motion and DIC is very sensitive to air moisture and dust, which contributes to enlarging the testing errors (Dubois et al 2012, Guillemoteau et al 2012. In addition, the inverse problem and ill-posedness separately involved in the two techniques limits the precision of the testing data.…”

Section: Measurement Science and Technologymentioning

confidence: 99%

Strain transfer analysis of optical fiber based sensors embedded in an asphalt pavement structure

Wang

Xiang

2016

Meas. Sci. Technol.

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Asphalt pavement is vulnerable to random damage, such as cracking and rutting, which can be proactively identified by distributed optical fiber sensing technology. However, due to the material nature of optical fibers, a bare fiber is apt to be damaged during the construction process of pavements. Thus, a protective layer is needed for this application. Unfortunately, part of the strain of the host material is absorbed by the protective layer when transferring the strain to the sensing fiber. To account for the strain transfer error, in this paper a theoretical analysis of the strain transfer of a three-layered general model has been carried out by introducing Goodman’s hypothesis to describe the interfacial shear stress relationship. The model considers the viscoelastic behavior of the host material and protective layer. The effects of one crack in the host material and the sensing length on strain transfer relationship are been discussed. To validate the effectiveness of the strain transfer analysis, a flexible asphalt-mastic packaged distributed optical fiber sensor was designed and tested in a laboratory environment to monitor the distributed strain and appearance of cracks in an asphalt concrete beam at two different temperatures. The experimental results indicated that the developed strain transfer formula can significantly reduce the strain transfer error, and that the asphalt-mastic packaged optical fiber sensor can successfully monitor the distributed strain and identify local cracks.

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“…In recent years, however, considerable and comprehensive numerical and experimental approaches have been used to address timber fracture characterization by means of DIC and the finite element method (FEM) (Dubois et al 2012;Milch et al 2017;Ostapska and Malo 2021a, b). As is well known, the joints are the most critical part of most of the timber structures, being designed as mechanical or adhesively bonded joints.…”

Section: Introductionmentioning

confidence: 99%

Analysis of poplar timber finger joints by means of Digital Image Correlation (DIC) and finite element simulation subjected to tension loading

et al. 2022

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Due to the strong demand for wood, and the need to reduce the carbon footprint in construction, fast-growing low-graded planted species like poplar are promising wood for the supply chain in the context of engineered wood products, EWPs. Finger joints constitute a key technology for the manufacture of long structural elements of EWPs. Thus, evaluation of the mechanical properties of finger joints is important when designing these structural members. This paper shows the results of mechanical behaviour in tension of poplar timber of the I-214 cultivar, for specimens with and without finger joints, using experiments monitored by DIC (Digital Image Correlation) and simulated by the Finite Element Method. For moderate and intermediate loads, the samples with finger joints showed behaviour similar to those without joints. However, the presence of the fingers decreased the mechanical properties of the modulus of elasticity in the longitudinal direction anywhere from 7.7 to 23.7%; and there was a decrease of around 27.5% in tensile strength. An agreeable correlation between the DIC results and FEM simulations is obtained for the longitudinal, transversal, and shear strain fields, thus demonstrating the high potential of both methodologies.

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Characterization of timber fracture using the Digital Image Correlation technique and Finite Element Method

Cited by 32 publications

References 28 publications

Structural health monitoring of timber structures – Review of available methods and case studies

Structural health monitoring of timber structures – Review of available methods and case studies

Strain transfer analysis of optical fiber based sensors embedded in an asphalt pavement structure

Analysis of poplar timber finger joints by means of Digital Image Correlation (DIC) and finite element simulation subjected to tension loading

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