Stereovision measurements on evaluating the modulus of elasticity of wood by compression tests parallel to the grain

Xavier, José; Jesus, Abílio M.P. De; Morais, J.J.L.; Pinto, Jorge

doi:10.1016/j.conbuildmat.2011.06.012

Cited by 109 publications

(72 citation statements)

References 5 publications

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“…2a, b. In this work, the ARAMIS DIC2D system was used [19]. A charge-coupled device (CCD) camera was coupled with a telecentric lens aiming a region of interest of 7.1 × 5.4 mm 2 .…”

Section: Digital Image Correlation (Dic)mentioning

confidence: 99%

Fracture characterization of human cortical bone under mode II loading using the end-notched flexure test

Silva

Moura

Dourado

et al. 2016

Med Biol Eng Comput

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between the numerical and experimental results reveals the appropriateness of the proposed test and procedure to characterize human cortical bone fracture under mode II loading. The proposed methodology can be viewed as a novel valuable tool to be used in parametric and methodical clinical studies regarding features (e.g., age, diseases, drugs) influencing bone shear fracture under mode II loading.

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“…2a, b. In this work, the ARAMIS DIC2D system was used [19]. A charge-coupled device (CCD) camera was coupled with a telecentric lens aiming a region of interest of 7.1 × 5.4 mm 2 .…”

Section: Digital Image Correlation (Dic)mentioning

confidence: 99%

Fracture characterization of human cortical bone under mode II loading using the end-notched flexure test

Silva

Moura

Dourado

et al. 2016

Med Biol Eng Comput

Self Cite

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“…The lens aperture was set to f/11 for enhancing depth of field and avoiding diffraction effects, and lighting intensity and shutter time were adjusted in order to obtain a uniform illumination, avoid pixel saturation and prevent motion blur in the images during exposure. With this setup, the displacement and strain resolution associated were in the range of 2×10 -2 pixel and 0.02% respectively [25,26]. In order to create a local, random (isotropic) and contrasted grey level distribution in the target surface, concrete was firstly uniformed using iron paste and polished with 300-grit sandpaper, and then painted using a white matte background applied on the region of interest, followed by a spread distribution of black painting.…”

Section: Specimens and Test Configurationmentioning

confidence: 99%

Effect of wet-dry cycles on the bond behaviour of concrete elements strengthened with NSM CFRP laminate strips

Garzón-Roca

Sena-Cruz

Fernandes

et al. 2015

Composite Structures

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ElsevierGarzón-Roca, J.; Sena-Cruz, JM.; Fernandes, P.; Xavier, J. (2015). Effect of wet-dry cycles on the bond behavior of concrete elements strengthened with NSM CFRP laminate strips. Composite Structures. 132:331-340. doi:10.1016Structures. 132:331-340. doi:10. /j.compstruct.2015 AbstractThe near-surface mounted (NSM) strengthening technique is capable of effectively increase the bearing capacity of structural concrete elements. This technique which basically consists of placing FRP reinforcements inside small grooves cut in the concrete cover, has been widely investigated in terms of structural performance and ability to improve the flexural and shear behaviour of reinforced concrete beams and columns. However, little research has been carried out concerning to the NSM long-term performance and durability. Motivated by the need of increasing the knowledge on the expected durability of the NSM technique using CFRP laminates, this paper presents an experimental program in which direct pull-out tests are carried out for evaluating the bond behaviour of specimens aged through wet-dry cycles. A total of 30 specimens are tested, analysing the effect of the bond length, the groove width, the groove depth and the aging effect on the bond behaviour. Digital image correlation method is also used to identify the bond resistant mechanism developed in an element strengthened using NSM technique. Finally, using the experimental results, an analytical-numerical strategy is applied to establish the local bond stress-slip relationship.

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“…The specimen dimensions for compression parallel to the grain testing [16][17][18][19][20][21][22] were: 35 mm thick × 100 mm wide × 150 mm high. Figure 5 shows the compression parallel to the grain specimen.…”

Section: Compression Parallel To the Grainmentioning

confidence: 99%

Physical and Mechanical Properties of Paricá Wood Species Treated with CCB Preservative

H.¹,

S.²,

D.³

et al. 2013

cmaterials

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Wood of Paricá species (Schizolobium amazonicum) is highly susceptible to degradation by decay microorganis ms. Due to its increasing production in the northern region of Brazil, about 85 thousand hectares, and later use both for structural purposes and for the furniture industry, the need of extending life of Paricá wood applying chemical preservatives arises. One current alternative is the treatment by autoclave using CCB (Copper Chro me Boron). The aim of this study was to evaluate the influence of treatment with CCB in the properties: apparent density, parallel and perpendicular hardness to the grain, strength to shear and in the co mpression parallel to the grain of the Schizolobium amazonicum wood species, comparing the results with untreated wood. We observed that treatment with CCB did not change the properties of apparent density, shear strength, perpendicular hardness, strength and stiffness in co mpression parallel to the grain. For the hardness strength parallel to the grain was decreased in 28.9%.

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Stereovision measurements on evaluating the modulus of elasticity of wood by compression tests parallel to the grain

Cited by 109 publications

References 5 publications

Fracture characterization of human cortical bone under mode II loading using the end-notched flexure test

Fracture characterization of human cortical bone under mode II loading using the end-notched flexure test

Effect of wet-dry cycles on the bond behaviour of concrete elements strengthened with NSM CFRP laminate strips

Physical and Mechanical Properties of Paricá Wood Species Treated with CCB Preservative

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