Dynamic structural health monitoring of a civil engineering structure with a POF accelerometer

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Paulo Costa Antunes (Autor) Outra; Joao Miguel Dias (Autor) Outra; Humberto Varum (Autor) FEUP; Paulo Andre (Autor) Outra

Revista

Título: Sensor Review

Vol. 34

Páginas: 36-41

ISSN: 0260-2288

Editora: Emerald

Indexação

ISI Web of Knowledge - 7 Citações

Scopus - 10 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia civil > Engenharia estrutural

Outras Informações

ID Authenticus: P-008-Z00

DOI: 10.1108/sr-04-2013-656

Abstract (EN): Purpose - In this work, the paper aims to demonstrate the feasibility of plastic optical fiber (POF) based accelerometers for the structural health monitoring (SHM) of civil engineering structures based on measurements of their dynamic response, namely to estimate natural frequencies. These sensors use POFs, combining the advantages of the optical technology with the robustness of this particular kind of fiber. The POF sensor output is directly compared with the signal from an electrical sensor, demonstrating the potential use of such sensors in structural monitoring applications. Design/methodology/approach - Within this work, the paper demonstrates the feasibility of using a low-cost acceleration system based on a POF accelerometer on the dynamic monitoring of a civil engineering structure, aiming its natural frequency evaluation, which is a primary parameter to be used in SHM methods and numerical models calibration. Findings - A low-cost POF-based accelerometer was used in the characterization of a civil engineering structural component, located in a building at the University of Aveiro Campus, being used to estimate its natural frequency with a relative error of 0.36 percent, comparatively to the value estimated recurring to a calibrated electronic sensor. Originality/value - Optical fiber sensors take advantage of the fibers properties, such as immunity to electromagnetic interference and electrical isolation. They are very attractive for use in hostile environments, like submerse environments or flammable atmospheres where electrical currents might pose a hazard. The advantages of POF itself should also be considered, like resistance to hash environments, robustness, flexibility, low-cost interrogation units and high numeric aperture (lower cost components). The paper demonstrates the feasibility of using a low-cost acceleration system based on a POF accelerometer on the dynamic monitoring of a civil engineering structure, aiming its natural frequency evaluation.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6