{"id":1395,"date":"2020-07-18T08:00:00","date_gmt":"2020-07-18T08:00:00","guid":{"rendered":"http:\/\/bambutec.com.br\/?p=1395"},"modified":"2023-07-21T21:47:31","modified_gmt":"2023-07-21T21:47:31","slug":"mesostructural-characterization-of-phyllostachys-aurea-bamboo-using-optical-microscopy-and-digital-image-processing","status":"publish","type":"publicacao","link":"https:\/\/bambutec.com.br\/en\/publicacao\/mesostructural-characterization-of-phyllostachys-aurea-bamboo-using-optical-microscopy-and-digital-image-processing\/","title":{"rendered":"Mesostructural Characterization of Phyllostachys aurea Bamboo using Optical Microscopy and Digital Image Processing"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>18th International Conference on Non-conventional Materials and Technologies NOCMAT 2022.<\/strong>&nbsp;<a rel=\"noopener noreferrer\" href=\"https:\/\/zenodo.org\/record\/6598776#.YsWUG73MLIU\" target=\"_blank\">Access<\/a>&nbsp;&gt;&gt;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M. Seixas; S. Paciornik; D. Cardoso; L.E. Moreira<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Abstract: The creep behavior of bamboo culms under long-term loadings was investigated in the present work.\u00a0Phyllostachys aurea\u00a0bamboo samples were subjected to four-point flexural creep tests at loads corresponding to 30%, 50%, and 80% of the bamboo's short-term bending strength. Creep and recovery behavior were evaluated for each loading level at room temperature over 398\u00a0days, allowing the attainment of primary, secondary, and tertiary creep stages. The failure of one creep test sample occurred at 73\u00a0MPa, and the failure mode due to creep was described. Creep mechanisms assessed included node flexibility, cylindrical bending, and shear. Node flexibility contributed 50\u201374% of total deflection, cylindrical bending contributed 24\u201348%, while shear contributed less than 2%. A four-element Burgers mechanical model was proposed, matching the experimental results for all loading levels. A viscous coefficient parameter of 4.3 to 30\u00d7\u2009103\u00a0GPa.day was inferred, corresponding to the linear dashpot\u00a0n1. These models estimated the bamboo culm deflection over time and predicted failure at a 40% increase in deflection. Overall, this study provided comprehensive insights into the long-term structural behavior of bamboo culms for use in design and engineering applications. <\/strong>This study investigates the\u00a0<em>Phyllostachys aurea<\/em>\u00a0bamboo mesostructure through optical microscopy and digital image processing. Specimens were produced using a bamboo full-culm with cross-sections sliced from 1, 4, and 6 meters distant from the ground. Digital images captured through light microscopy with the magnification of 200x were digitally processed for the segmentation of sclerenchyma, vessels, parenchyma, and epidermis phases, allowing for the extraction of the material\u2019s anatomical features. Binary images obtained from each phase were produced and, then, measured, showing portions of the constituent phases of\u00a0<em>P. aurea<\/em>\u00a0cross-sections at the bottom, middle, and top parts of the culm, respectively.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>18th International Conference on Non-conventional Materials and Technologies NOCMAT 2022.&nbsp;Clique para acessar&nbsp;&gt;&gt; M. Seixas; S. Paciornik; D. Cardoso; L.E. Moreira Resumo: This study investigates the\u00a0Phyllostachys aurea\u00a0bamboo mesostructure through optical microscopy and digital image processing. Specimens were produced using a bamboo full-culm with cross-sections sliced from 1, 4, and 6 meters distant from the ground. Digital [&hellip;]<\/p>","protected":false},"featured_media":1390,"template":"","format":"standard","categories":[52],"tags":[68,67,69,65,64,66],"class_list":["post-1395","publicacao","type-publicacao","status-publish","format-standard","has-post-thumbnail","hentry","category-publicacoes","tag-bio-based-material","tag-composites","tag-digital-image-processing","tag-full-culm-bamboo","tag-hierarchical-graded-structure","tag-optical-microscopy"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/publicacao\/1395","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/publicacao"}],"about":[{"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/types\/publicacao"}],"version-history":[{"count":9,"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/publicacao\/1395\/revisions"}],"predecessor-version":[{"id":1894,"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/publicacao\/1395\/revisions\/1894"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/media\/1390"}],"wp:attachment":[{"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/media?parent=1395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/categories?post=1395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/tags?post=1395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}