Título: | EXPERIMENTAL INVESTIGATION ON THE STRESS RELAXATION BEHAVIOR OF A HIGH-STRENGTH ARAMID FIBER | ||||||||||||
Autor: |
MARGARETH DA SILVA MAGALHAES |
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Colaborador(es): |
GIUSEPPE BARBOSA GUIMARAES - Orientador |
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Catalogação: | 19/FEV/2001 | Língua(s): | PORTUGUESE - BRAZIL |
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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. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1260&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1260&idi=2 [es] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1260&idi=4 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.1260 | ||||||||||||
Resumo: | |||||||||||||
High-strength aramid fibers have been used in the
production of a variety of
cables and ropes which have found several applications as
structural members in bridges and
other types of structures. For such applications, a sound
knowledge of the time dependent
material properties is highly important.
An experimental investigation on the stress relaxation
behavior of a high-strength
aramid fiber was carried out, with the purpose of studying
the viscoelastic properties
of the material and the effect of a mechanical conditioning
(application and removal of stress
prior to testing) on these properties. The fiber used in
this investigation is commercially
known as Kevlar 49. The tests were conducted at five
different stress levels, at constant
temperature and moisture. The results showed that the fiber
has a non-linear viscoelastic
behavior and that the effect of the mechanical conditioning
isn´t important. An equation for
the prediction of the stress relaxation is presented.
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