Degradação dos cintos de segurança contra quedas após uso por ramo de atividade
Full body harnesses ares used as a protective equipment in order to minimize the consequences of high falls and require good mechanical properties to provide the necessary protection to the user. There are few studies about the characterization of used full body harnesses in order to identify and...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/57303 |
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| Resumo: | Full body harnesses ares used as a protective equipment in order to minimize the
consequences of high falls and require good mechanical properties to provide the
necessary protection to the user. There are few studies about the characterization of used
full body harnesses in order to identify and quantify the loss of degradation after its usage
time. Previous studies showed those protective equipment lose their protective properties
during service life, caused by several destructive factors as well as UV, dust, chemicals,
temperature changes and humidity, as the direct contact with sharp objects and rough
surfaces. The objective of this work is to present degradations found in full body
harnesses after use, relating these defects to the types of activity to which they were
exposed. The methodology used is based on the use of full body harnesses samples againdt
falls used by workers in several companies, performing visual inspection, caracterization
of textile materials, static and dynamic tests on said samples. The results confirm several
types of degradation found in previous research and demonstrate that most of the defects
found are related to corrosion of metallic elements (90 %), dirt (50 %) and wear on the
tapes (20 %). In those samples collected in textile industry, a greater diversity of defects
and dirt were found, while in civil construction only dirts from cement was found. In the
energy and telecommunications sectors, defects were found in dorsal support elements
and in the legs, in addition to wear on the tapes in 80 % of the samples, which may be
related to the daily frequency of use of Personal Protective Equipments to climb stairs
and poles. Finally, all used full body harnesses against falls studied were approved in
dynamic tests, but there were a loss of resistance of 3.46 %, proven through static
resistance test. |
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