Photomechanical Analysis of Wooden Testing Bodies under Flexural Loadings
Application of wood in rural construction is diffused
all around the world since remote times. However, its inclusion in
structural design deserves strong support from broad knowledge of
material properties. The pertinent literature reveals the application of
optical methods in determining the complete field displacement on
bodies exhibiting regular as well as irregular surfaces. The use of
moiré techniques in experimental mechanics consists in analyzing the
patterns generated on the body surface before and after deformation.
The objective of this research work is to study the qualitative
deformation behavior of wooden testing specimens under specific
loading situations. The experiment setup follows the literature
description of shadow moiré methods. Results indicate strong
anisotropy influence of the generated displacement field. Important
qualitative as well as quantitative stress and strain distribution were
obtained wooden members which are applicable to rural
constructions.
[1] D. Albiero, S. Rodrigues, A. L. Beraldo, A. J. S. Maciel, I. M. Dal
Fabbro, V. Mazzeti, A. C. Gamero. Determination of Wood specimen
using isostrain patterns generated by moiré technique. BioEng.
Campinas, v. 1, n. 2, p. 163-172, mai./ago., 2.007.
[2] D. Albiero, M. C. Araujo, A. C. O. Ferraz, I. M. Dal Fabbro, A. J. S.
Maciel. Moiré optical technique for evaluation of cashew nuts
(Anacardium Occidentale, L.) ISOSTRAIN. Varia Scientia Agrarias, v.
9, p. 9-20, 2012.
[3] Associa├º├úo Brasileira de Normas Técnicas. NBR 7190: Projeto de
estruturas de madeira - procedimentos. Rio de Janeiro, 1997.
[4] A. L. Beraldo, D. Albiero, A. J. S. Maciel, I. M. Dal Fabbro, S.
Rodrigues. Técnica de moiré aplicada al an├ílisis de esfuerzos de
compresi├│n en el bambu guadua. Maderas: Ciencia y Tecnologia.
Concepci├│n, v. 9, n. 3, p. 309-322, 2.007.
[5] A. L. Christoforo, T. H. Panzera, F. B. Batista, P. H. Borges, F. A. R.
Lahr, F. C. Franco. The position effect of structural eucalyptus round
timber on the flexural modulus of elasticity. Revista Engenharia
Agrícola. Jaboticabal. v. 31, n. 6, p. 1.219-1.225, Nov./dez. 2.011.
[6] M. A. Demarzo, E. A. Affonso, I. M. Dal Fabbro. O método de moiré de
sombra no estudo experimental em liga├º├Áes parafusadas. Madeira. v. 22,
p. 3-10, 2.008.
[7] J. F. Doyle. Hybrid Methods. Springer Handbook of Solid Mechanics,
Ed. Sharpe, New York, 2.008.
[8] J. Gazzola, I. M. Dal Fabbro, J. Soriano, A. M. Enes, F. Kuninari.
Shadow Moiré Applied to Torsional Stress Distribution Mapping.
Agricultural Engineering Journal. Sophia, v. 48, n.2, pp. 61-65. Sophia,
Oct. 2010.
[9] T. S. Gomes et al. Calibra├º├úo da técnica de moiré aplicada a
perfilometria de protótipos mecânicos. Revistas Ciência e
Agrotecnologia. Lavras, v. 33, n. 2, p. 574-579, mar./abr., 2.009.
[10] F. Kuninari, I. M. Dal Fabbro, A. C. L. Lino, C. Almeida, C. Moiré
aided soil-tractor tire contact area and contact volume determination.
Journal of Agricultural Machinery Science. V. 4 n. 1, p. 39-43, 2.008.
[11] F. G. Gonçalves, J. T. S. Oliveira, R. M. D. Lucia, R. C. Sartório. Estudo
de algumas propriedades mecânicas da madeira de um híbrido clonal de
Eucalyptus urophylla x Eucalyptus grandis. Revista Árvore. Viçosa, v.
33, n. 3, p. 501-509, 2.009.
[12] V. Mazzeti filho, I. M. Dal Fabbro, O. Braunbeck, A. C. L. Lino.
Application of a Moiré technique in the stress distribution mapping of
circular rotors. Revista Ciência e Tecnologia. Campinas, Ano VII, n. 10,
p. 31-34, jun. 2.004.
[13] G. P. Pires, A. A. Tagliaferri, C. Thaumaturgo. Interferometria ├│ptica
para ensaios n├úo-destrutivos. Revista Matéria, Rio de Janeiro. v.7, n.1,
21 p. 2002.
[14] P. Postawa, R. Kwiatkowski. Residual stress distribution in injection
molded partes. Journal of Achievements in Materials and Manufacturing
Engineering. V. 18, p. 171-174, set./oct. 2.006.
[15] S. Shakerin, D. D. Jensen. Enhancement of mechanics education by
means of photoelasticity and finite element method. International
Journal of Mechanical Engineering Education. V. 29, n. 4, 2.000.
[1] D. Albiero, S. Rodrigues, A. L. Beraldo, A. J. S. Maciel, I. M. Dal
Fabbro, V. Mazzeti, A. C. Gamero. Determination of Wood specimen
using isostrain patterns generated by moiré technique. BioEng.
Campinas, v. 1, n. 2, p. 163-172, mai./ago., 2.007.
[2] D. Albiero, M. C. Araujo, A. C. O. Ferraz, I. M. Dal Fabbro, A. J. S.
Maciel. Moiré optical technique for evaluation of cashew nuts
(Anacardium Occidentale, L.) ISOSTRAIN. Varia Scientia Agrarias, v.
9, p. 9-20, 2012.
[3] Associa├º├úo Brasileira de Normas Técnicas. NBR 7190: Projeto de
estruturas de madeira - procedimentos. Rio de Janeiro, 1997.
[4] A. L. Beraldo, D. Albiero, A. J. S. Maciel, I. M. Dal Fabbro, S.
Rodrigues. Técnica de moiré aplicada al an├ílisis de esfuerzos de
compresi├│n en el bambu guadua. Maderas: Ciencia y Tecnologia.
Concepci├│n, v. 9, n. 3, p. 309-322, 2.007.
[5] A. L. Christoforo, T. H. Panzera, F. B. Batista, P. H. Borges, F. A. R.
Lahr, F. C. Franco. The position effect of structural eucalyptus round
timber on the flexural modulus of elasticity. Revista Engenharia
Agrícola. Jaboticabal. v. 31, n. 6, p. 1.219-1.225, Nov./dez. 2.011.
[6] M. A. Demarzo, E. A. Affonso, I. M. Dal Fabbro. O método de moiré de
sombra no estudo experimental em liga├º├Áes parafusadas. Madeira. v. 22,
p. 3-10, 2.008.
[7] J. F. Doyle. Hybrid Methods. Springer Handbook of Solid Mechanics,
Ed. Sharpe, New York, 2.008.
[8] J. Gazzola, I. M. Dal Fabbro, J. Soriano, A. M. Enes, F. Kuninari.
Shadow Moiré Applied to Torsional Stress Distribution Mapping.
Agricultural Engineering Journal. Sophia, v. 48, n.2, pp. 61-65. Sophia,
Oct. 2010.
[9] T. S. Gomes et al. Calibra├º├úo da técnica de moiré aplicada a
perfilometria de protótipos mecânicos. Revistas Ciência e
Agrotecnologia. Lavras, v. 33, n. 2, p. 574-579, mar./abr., 2.009.
[10] F. Kuninari, I. M. Dal Fabbro, A. C. L. Lino, C. Almeida, C. Moiré
aided soil-tractor tire contact area and contact volume determination.
Journal of Agricultural Machinery Science. V. 4 n. 1, p. 39-43, 2.008.
[11] F. G. Gonçalves, J. T. S. Oliveira, R. M. D. Lucia, R. C. Sartório. Estudo
de algumas propriedades mecânicas da madeira de um híbrido clonal de
Eucalyptus urophylla x Eucalyptus grandis. Revista Árvore. Viçosa, v.
33, n. 3, p. 501-509, 2.009.
[12] V. Mazzeti filho, I. M. Dal Fabbro, O. Braunbeck, A. C. L. Lino.
Application of a Moiré technique in the stress distribution mapping of
circular rotors. Revista Ciência e Tecnologia. Campinas, Ano VII, n. 10,
p. 31-34, jun. 2.004.
[13] G. P. Pires, A. A. Tagliaferri, C. Thaumaturgo. Interferometria ├│ptica
para ensaios n├úo-destrutivos. Revista Matéria, Rio de Janeiro. v.7, n.1,
21 p. 2002.
[14] P. Postawa, R. Kwiatkowski. Residual stress distribution in injection
molded partes. Journal of Achievements in Materials and Manufacturing
Engineering. V. 18, p. 171-174, set./oct. 2.006.
[15] S. Shakerin, D. D. Jensen. Enhancement of mechanics education by
means of photoelasticity and finite element method. International
Journal of Mechanical Engineering Education. V. 29, n. 4, 2.000.
@article{"International Journal of Architectural, Civil and Construction Sciences:52048", author = "J. Gazzola and I. M. Dal Fabbro and J. Soriano and M. V. G. Silva and S. Rodrigues", title = "Photomechanical Analysis of Wooden Testing Bodies under Flexural Loadings", abstract = "Application of wood in rural construction is diffused
all around the world since remote times. However, its inclusion in
structural design deserves strong support from broad knowledge of
material properties. The pertinent literature reveals the application of
optical methods in determining the complete field displacement on
bodies exhibiting regular as well as irregular surfaces. The use of
moiré techniques in experimental mechanics consists in analyzing the
patterns generated on the body surface before and after deformation.
The objective of this research work is to study the qualitative
deformation behavior of wooden testing specimens under specific
loading situations. The experiment setup follows the literature
description of shadow moiré methods. Results indicate strong
anisotropy influence of the generated displacement field. Important
qualitative as well as quantitative stress and strain distribution were
obtained wooden members which are applicable to rural
constructions.", keywords = "Moiré methods, wooden structural material, rural
constructions.", volume = "6", number = "10", pages = "788-6", }
