Memorias de investigación
Artículos en revistas:
Health monitoring of hysteretic dampers subjected to cyclic loading through vibration tests
Año:2014
Áreas de investigación
  • Ingenierías
Datos
Descripción
This article investigates experimentally the application of health monitoring techniques to assess the damage on a particular kind of hysteretic (metallic) damper called web plastifying dampers, which are subjected to cyclic loading. In general terms, hysteretic dampers are increasingly used as passive control systems in advanced earthquake-resistant structures. Nonparametric statistical processing of the signals obtained from simple vibration tests of the web plastifying damper is used here to propose an area index damage. This area index damage is compared with an alternative energy-based index of damage proposed in past research that is based on the decomposition of the load?displacement curve experienced by the damper. Index of damage has been proven to accurately predict the level of damage and the proximity to failure of web plastifying damper, but obtaining the load?displacement curve for its direct calculation requires the use of costly instrumentation. For this reason, the aim of this study is to estimate index of damage indirectly from simple vibration tests, calling for much simpler and cheaper instrumentation, through an auxiliary index called area index damage. Web plastifying damper is a particular type of hysteretic damper that uses the out-of-plane plastic deformation of the web of I-section steel segments as a source of energy dissipation. Four I-section steel segments with similar geometry were subjected to the same pattern of cyclic loading, and the damage was evaluated with the index of damage and area index damage indexes at several stages of the loading process. A good correlation was found between area index damage and index of damage. Based on this correlation, simple formulae are proposed to estimate index of damage from the area index damage.
Internacional
Si
JCR del ISI
Si
Título de la revista
Structural Health Monitoring-an International Journal
ISSN
1475-9217
Factor de impacto JCR
3,206
Información de impacto
Volumen
13
DOI
Número de revista
1
Desde la página
33
Hasta la página
49
Mes
SIN MES
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Participantes
  • Autor: Amadeo Benavent Climent UPM
  • Autor: Antolino Gallego Universidad de Granada
  • Autor: Liliana Romero Melo Universidad de Granada
  • Autor: Leandro Morillas Universidad de Granada
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Ingeniería Sísmica: Dinámica de Suelos y Estructuras