Título: | EXPERIMENTAL DETERMINATION OF FRACTURE TOUGHNESS OF MODE I (KIC) AND MODE II (KIIC) DO BAMBOO | ||||||||||||||||||||||||||||||||||||
Autor: |
CAMILO ANDRES RUSINQUE GUATIBONZA |
||||||||||||||||||||||||||||||||||||
Colaborador(es): |
KHOSROW GHAVAMI - Orientador |
||||||||||||||||||||||||||||||||||||
Catalogação: | 28/JUL/2010 | Língua(s): | PORTUGUESE - BRAZIL |
||||||||||||||||||||||||||||||||||
Tipo: | TEXT | Subtipo: | THESIS | ||||||||||||||||||||||||||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
||||||||||||||||||||||||||||||||||||
Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=16005&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=16005&idi=2 |
||||||||||||||||||||||||||||||||||||
DOI: | https://doi.org/10.17771/PUCRio.acad.16005 | ||||||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||||||
During the last three decades, the research on bamboo as engineering
material was carried on through the physical and mechanic characterizations in
the levels macro, meso, micro and some works in the nano-structural level. In
practice, the use of entire bamboo shows cracks on the surface throughout the
time, that are provoked by variation of the moisture, the temperature and
notches generated during the process of manufacture of structural parts. The
crack presence has influences on the resistance of these elements. This aspect
of the bamboo behaviour is still subject of study in the initial phase. This work
presents the results of a theoretical and experimental research for the
determination of the characteristic values of the intensity stress factors, K(C), and
the release energy, G(C), for modes I and II, using methodologies applied to the
composites materials. It was studied the basal part of the specie
Dendrocalamus Giganteus of the Pontifícia Universidade Católica do Rio de
Janeiro campus (PUC-Rio). The specimens had rectangular shape with
transversal section of 10x10mm and 100mm of length with notch; each one was
tested in four points bend for different values of notch size. The results
correspond to curves load-displacement in the half span; and strain in the
external, internal and lateral sides of the specimen. The values of release
energy and intensity stress factors have been calculated from the curve loaddisplacement.
|
|||||||||||||||||||||||||||||||||||||
|