Publications

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2004
Xavier, J. C., N. M. Garrido, M. Oliveira, J. L. Morais, P. P. Camanho, and F. Pierron. "A comparison between the Iosipescu and off-axis shear test methods for the characterization of ıt Pinus pinaster Ait." Composites Part A: Applied Science and Manufacturing. 35 (2004): 827-840. Abstract

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2007
Xavier, J., S. Avril, F. Pierron, and J. Morais. "Novel experimental approach for longitudinal-radial stiffness characterisation of clear wood by a single test." Holzforschung. 61 (2007): 573-581. Abstract
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2009
Xavier, J., M. Oliveira, J. Morais, and J. Pinto. "Measurement of the shear properties of clear wood by the Arcan test." Holzforschung. 63 (2009): 217-225. Abstract
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Xavier, J., S. Avril, F. Pierron, and J. Morais. "Variation of transverse and shear stiffness properties of wood in a tree." Composites Part A: Applied Science and Manufacturing. 40 (2009): 1953-1960. Abstract
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2010
Catalanotti, G., P. P. Camanho, J. Xavier, C. G. Dávila, and AT Marques. "Measurement of resistance curves in the longitudinal failure of composites using digital image correlation." Composites Science and Technology. 70 (2010): 1986-1993. Abstract
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de Moura, M. F. S. F., J. M. Q. Oliveira, J. J. L. Morais, and J. Xavier. "Mixed-mode {I/II} wood fracture characterization using the mixed-mode bending test." Engineering Fracture Mechanics. 77 (2010): 144-152. Abstract
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Morais, J. J. L., M. F. S. F. de Moura, F. A. M. Pereira, J. Xavier, N. Dourado, M. I. R. Dias, and J. M. T. Azevedo. "The double cantilever beam test applied to mode I fracture characterization of cortical bone tissue." Journal of the Mechanical Behavior of Biomedical Materials. 3 (2010): 446-453. Abstract

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2011
Xavier, J., J. Morais, N. Dourado, and M. F. S. F. de Moura. "Measurement of mode I and mode II fracture properties of wood-bonded joints." Journal of Adhesion Science and Technology. 25 (2011): 2881-2895. Abstract
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Sousa, A. M. R., J. Xavier, J. J. L. Morais, V. M. J. Filipe, and M. Vaz. "Processing discontinuous displacement fields by a spatio-temporal derivative technique." Optics and Lasers in Engineering. 49 (2011): 1402-1412. Abstract
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Sousa, A. M. R., J. Xavier, M. Vaz, J. J. L. Morais, and V. M. J. Filipe. "Cross-correlation and differential technique combination to determine displacement fields." Strain. 47 (2011): 87-98. Abstract

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2012
Xavier, J., A. M. R. Sousa, J. J. L. Morais, V. M. J. Filipe, and M. Vaz. "Measuring displacement fields by cross-correlation and a differential technique: experimental validation." Optical Engineering. 51 (2012): 043602. Abstract
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Xavier, J., A. M. P. de Jesus, J. J. L. Morais, and J. M. T. Pinto. "Stereovision measurements on evaluating the modulus of elasticity of wood by compression tests parallel to the grain." Construction and Building Materials. 26 (2012): 207-215. Abstract
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2013
Xavier, J., U. Belini, F. Pierron, J. Morais, J. Lousada, and M. Tomazello. "Characterisation of the bending stiffness components of MDF panels from full-field slope measurements." Wood Science and Technology. 47 (2013): 423-441. Abstract
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Dias, G. F., M. F. S. F. de Moura, J. A. G. Chousal, and J. Xavier. "Cohesive laws of composite bonded joints under mode I loading." Composite Structures. 106 (2013): 646-652. Abstract
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Fernandes, A., J. Lousada, J. Morais, J. Xavier, J. Pereira, and P. Melo-Pinto. "Comparison between neural networks and partial least squares for intra-growth ring wood density measurement with hyperspectral imaging." Computers and Electronics in Agriculture. 94 (2013): 71-81. Abstract
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Silva, F., J. Xavier, F. A. M. Pereira, J. Morais, N. Dourado, and M. F. S. F. de Moura. "Determination of cohesive laws in wood bonded joints under mode I loading using the DCB test." Holzforschung. 67 (2013): 835-959. AbstractWebsite
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Fernandes, A., J. Lousada, J. Morais, J. Xavier, J. Periera, and P. Melo-Pinto. "Measurement of intra-ring wood density by means of imaging VIS/NIR spectroscopy (hyperspectral imaging)." Holzforschung. 67 (2013): 59-65. Abstract
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Ercin, G. H., P. P. Camanho, J. Xavier, G. Catalanotti, S. Mahdi, and P. Linde. "Size effects on the tensile and compressive failure of notched composite laminates." Composite Structures. 96 (2013): 736-744. Abstract
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Fernandes, R. M. R. P., J. A. G. Chousal, M. F. S. F. de Moura, and J. Xavier. "Determination of cohesive laws of composite bonded joints under mode II loading." Composites Part B: Engineering. 52 (2013): 269-274. Abstract

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2014
Pereira, J., J. Xavier, J. Morais, and J. Lousada. "Assessing wood quality by spatial variation of elastic properties within the stem: Case study of Pinus pinaster in the transverse plane." Canadian Journal of Forest Research. 44 (2014): 107-117. Abstract
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Xavier, J., M. Oliveira, J. J. L. Morais, and M. F. S. F. de Moura. "Determining mode İI\} cohesive law of Pinus pinaster by combining the end-notched flexure test with digital image correlation." Construction and Building Materials. 71 (2014): 109-115. Abstract

Abstract This work addresses the direct identification of cohesive law of Pinus pinaster in mode II. The end-notched flexure (ENF) test is selected for mode İI\} loading. The strain energy release rate in mode İI\} (GII) is determined according to the compliance-based beam method (CBBM) by processing the global load�displacement curve, without requirements to monitor the crack length during test. The fracture test is coupled with digital image correlation (DIC) for the local measurement of the crack tip opening displacement in mode İI\} (wII). Using a direct method, the cohesive law in mode İI\} (sII�wII) is determined by differentiating the GII�wII relationship. The procedure is validated from both numerical, using finite element analyses including cohesive zone modelling, and experimental approaches. The methodology and accuracy on this reconstruction is discussed. It is concluded that the proposed data reduction scheme is suitable for assessing the cohesive law of P. pinaster in mode II.

Xavier, J., M. Oliveira, P. Monteiro, J. J. L. Morais, and M. F. S. F. Moura. "Direct Evaluation of Cohesive Law in Mode I of Pinus pinaster by Digital Image Correlation." Experimental Mechanics. 54 (2014): 829-840. AbstractWebsite
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Xavier, J., P. Monteiro, J. J. L. Morais, N. Dourado, and M. F. S. F. de Moura. "Moisture content effect on the fracture characterisation of Pinus pinaster under mode I." Journal of Materials Science. 49 (2014): 7371-7381. AbstractWebsite
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Silva, F. G. A., J. J. L. Morais, N. Dourado, J. Xavier, F. A. M. Pereira, and M. F. S. F. de Moura. "Determination of cohesive laws in wood bonded joints under mode II loading using the ENF test." International Journal of Adhesion and Adhesives. 51 (2014): 54-61. AbstractWebsite

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2015
Fernández-Cabo, J. L., R. Widmann, M. Arce-Blanco, R. Crocetti, J. Xavier, and A. Majano-Majano. "Assessment of wire-frame analysis models of a historical planked timber arch." Proceedings of the Institution of Civil Engineers - Structures and Buildings. 168 (2015): 680-694. AbstractWebsite
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