Health monitoring of web plastifying dampers subjected to cyclic loading through vibration tests

Benavent Climent, Amadeo and Gallego Molina, Antolino and Romo Melo, Liliana Minelly and Morillas, L. (2014). Health monitoring of web plastifying dampers subjected to cyclic loading through vibration tests. "Structural Health Monitoring", v. 13 (n. 1); pp. 33-49. ISSN 1475-9217. https://doi.org/10.1177/1475921713499273.

Description

Title: Health monitoring of web plastifying dampers subjected to cyclic loading through vibration tests
Author/s:
  • Benavent Climent, Amadeo
  • Gallego Molina, Antolino
  • Romo Melo, Liliana Minelly
  • Morillas, L.
Item Type: Article
Título de Revista/Publicación: Structural Health Monitoring
Date: 2014
ISSN: 1475-9217
Volume: 13
Subjects:
Freetext Keywords: Hysteretic dampers; Vibration tests; Health monitoring; Energy-based damage index; Piezoceramic sensor
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Mecánica
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainP07-TEP-02610UnspecifiedAmadeo Benavent ClimentDesarrollo e implementación de la tecnología de los disipadores de energía aplicada al control del daño en construcciones sometidas a terremotos, y su evaluación mediante técnicas avanzadas
Government of SpainP08-TEP-03641UnspecifiedAntolino Gallego MolinaDetección de daño en materiales compuestos avanzados de uso aeronáutico mediante técnicas vibro-acústicas y modelos de optimización

More information

Item ID: 35895
DC Identifier: http://oa.upm.es/35895/
OAI Identifier: oai:oa.upm.es:35895
DOI: 10.1177/1475921713499273
Official URL: http://shm.sagepub.com/content/early/2013/09/12/1475921713499273
Deposited by: Memoria Investigacion
Deposited on: 03 Mar 2016 13:52
Last Modified: 07 Mar 2016 09:07
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