Structural Health Monitoring
Mostrando 13-24 de 32 artigos, teses e dissertações.
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13. A fault location method using Lamb waves and discrete wavelet transform
Non-destructive evaluation methods and signal process techniques are important steps in structural health monitoring systems to assess the structure integrity. This paper presents a method for fault location in aluminum beams based on time of flight of Lamb waves. The dynamic response signal captured from the structure was processed using the discrete wavele
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012-12
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14. Architecture of a remote impedance-based structural health monitoring system for aircraft applications
The essence of structural health monitoring (SHM) is to develop systems based on nondestructive inspection (NDI) technologies for continuous monitoring, inspection and detection of structural damages. A new architecture of a remote SHM system based on Electromechanical Impedance (EMI) measures is described in the present contribution. The proposed environmen
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012
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15. Estudo de métodos de identificação multivariável baseados em subespaços aplicados ao monitoramento da integridade de estruturas / Study of subspace-based identification methods applied to structural health monitoring
Structural Health Monitoring (SHM) is a multidisciplinary research field, which covers techniques, technologies and methods which are essential to perform a continuous and intelligent diagnosis about mechanical structure integrity. The development of structures with improved durability, improved operational safety and reduced maintenance cost are the main re
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/07/2011
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16. PRODUÇÃO DE ANTÍGENOS DO VÍRUS DA ARTRITE ENCEFALITE CAPRINA PARA IMUNODIAGNÓSTICO / PRODUCTION OF VIRUS ANTIGENS OF GOATS FOR ARTHRITIS ENCEPHALITIS IMMUNODIAGNOSTIC
The small ruminantslentiviruses are responsible for a significant economic loss that enabled the development of efficient control and monitoring programs in Europe and other countries.The diagnosis of CAE is mainly based on serological tests.The World Organisation for Animal Health (OIE) recommends the use of agarose gel immunodiffusion (AGID) for its low co
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/07/2011
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17. MONITORING FLEXIBLE RISERS WITH OPTICAL FIBER SENSORS / MONITORAMENTO DE RISERS FLEXÍVEIS COM SENSORES A FIBRA ÓPTICA
The interest in structural health monitoring of flexible risers has grown significantly in recent years. For ducts that are already reaching their design life, monitoring systems can provide early warnings of potential failures and also assist the operator in scheduling downtime. Different techniques are being tested by operators of flexible pipes such as au
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/04/2011
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18. A FEM-BEM interactive coupling for modeling the piezoelectric health monitoring systems
In this research, finite element and boundary element methods are coupled together to model the interaction of a piezoelectric ceramic working as an actuator with an elastic material. Piezoelectric-elastic material's interaction occurs in smart structures. This work is aimed at determining the actuation effects being transferred from the actuators to the hos
Latin American Journal of Solids and Structures. Publicado em: 2011-09
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19. Técnicas para monitoramento de integridade estrutural usando sensores e atuadores piezoelétricos / Techniques for structural health monitoring using piezoelectric sensors and actuators
A utilização de materiais piezoelétricos, na função de sensores e atuadores distribuídos, para o controle e monitoramento de vibrações estruturais tem um enorme potencial de aplicação nas indústrias aeronáutica, aeroespacial, automobilística e eletroeletrônica. O uso de sensores piezoelétricos integrados para monitoramento de integridade estru
Publicado em: 2011
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20. Mechanical characterization using optical fiber sensors of polyester polymer concrete made with recycled aggregates
The sustainable management of solid wastes encourages metallurgic and metal-mechanic industries to look for safety applications for their wastes, thereby attenuating the environmental impact or lowering the costs. The study herein proposes strain monitoring the recycling of foundry sand with organic pollutants, as inert, in the manufacturing process of polym
Materials Research. Publicado em: 2009-09
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21. On The Use of the Electromechanical Impedance and Lamb Waves techniques for Damage Detection on Riveted Structures / Utilização das Técnicas de Impedância Eletromecânica e Ondas de Lamb para Identificação de Dano em Estruturas com Rebites
O presente trabalho tem por objetivo o estudo do desempenho de duas técnicas já conhecidas de monitoramento de integridade estrutural (SHM Structural Health Monitoring) aplicadas à detecção de danos em estruturas metálicas rebitadas, como vigas e painéis aeronáuticos. Ambas as técnicas se servem de materiais piezelétricos para a excitação mecâni
Publicado em: 2009
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22. Uma contribuição aos sistemas de monitoramento de integridade estrutural aplicada a estruturas aeronáuticas e espaciais / A contribution to structural health monitoring systems applied to aeronautic and space structures
Este trabalho apresenta uma contribuição para as técnicas de monitoramento de integridade estrutural (SHM Structural Health Monitoring) de componentes aeronáuticos e espaciais. Desta forma, pretende-se apresentar algumas áreas de atuação ainda pouco exploradas, como aplicações em estruturas mecânicas simples, metodologia de acoplamento de tecnologi
Publicado em: 2008
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23. Structural health monitoring of composite materials subjected to impacts using the electromechanical impedance technique / Monitoramento de integridade estrutural de materiais compostos sujeitos a impactos empregando a técnica da impedância eletromecânica
Nowadays, composite materials have increasingly replaced traditional materials in applications that require improved performance, safety, economy and durability. Nonetheless, such materials exhibit complex damage mechanisms that cannot be easily detected in early stages. Failures can occur during manufacturing, operation or even in the course of maintenance.
Publicado em: 2008
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24. Structural damage detection using time series analysis and piezoelectries actuators and sensors / Detecção de danos estruturais usando analise de series temporais e atuadores e sensores piezeletricos
This work proposes a novel approach to detect and locate incipient damage in structures by using only acceleration responses and coupled piezoelectric actuators and sensors. Though the major focus in smart damage detection is given by on the monitoring of the electrical impedance in the frequency domain, the current contribution applies a novel technique bas
Publicado em: 2008