Detection of acoustic emission location using optical fiber sensors

1994 ◽  
Author(s):  
Kent A. Murphy ◽  
Michael F. Gunther ◽  
Anbo Wang ◽  
Richard O. Claus ◽  
Jonathan A. Greene ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Optical Fiber ◽  
Optical Fiber Sensors ◽  
Fiber Sensors

Optical-Fiber Sensors for the Detection of Acoustic Emission

MRS Bulletin ◽  
2002 ◽  
Vol 27 (5) ◽  
pp. 396-399 ◽  
Author(s):  
William B. Spillman ◽  
Richard O. Claus
Keyword(s):  
Signal Processing ◽  
Acoustic Emission ◽  
Optical Fiber ◽  
Material Properties ◽  
High Speed ◽  
Optical Fiber Sensors ◽  
Piezoelectric Transducers ◽  
Fiber Sensors ◽  
Critical Materials ◽  
Signal Processing Methods

AbstractAcoustic emission (AE) is used as a means to anticipate the mechanical failure of critical materials and structures by detecting the release of energy caused by material rearrangement at the microlevel. Optical-fiber sensors have potential advantages over conventional tuned piezoelectric transducers and signal-processing methods for the detection of such types of ultrasonic acoustic wave events. A number of fiber Bragg grating techniques are presented, which in particular offer the potential to provide the high-speed signal processing and ability to multiplex numbers of AE sensors necessary to detect, quantify, and locate AE sources and thereby determine material properties and damage.

scholarly journals A Review of Recent Distributed Optical Fiber Sensors Applications for Civil Engineering Structural Health Monitoring

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1818
Author(s):  
Mattia Francesco Bado ◽  
Joan R. Casas
Keyword(s):  
Structural Health Monitoring ◽  
Optical Fiber ◽  
Health Monitoring ◽  
Optical Fiber Sensors ◽  
Vibration Monitoring ◽  
Fiber Sensors ◽  
Structural Health ◽  
Comprehensive Collection ◽  
Monitoring Tools ◽  
Distributed Optical Fiber

The present work is a comprehensive collection of recently published research articles on Structural Health Monitoring (SHM) campaigns performed by means of Distributed Optical Fiber Sensors (DOFS). The latter are cutting-edge strain, temperature and vibration monitoring tools with a large potential pool, namely their minimal intrusiveness, accuracy, ease of deployment and more. Its most state-of-the-art feature, though, is the ability to perform measurements with very small spatial resolutions (as small as 0.63 mm). This review article intends to introduce, inform and advise the readers on various DOFS deployment methodologies for the assessment of the residual ability of a structure to continue serving its intended purpose. By collecting in a single place these recent efforts, advancements and findings, the authors intend to contribute to the goal of collective growth towards an efficient SHM. The current work is structured in a manner that allows for the single consultation of any specific DOFS application field, i.e., laboratory experimentation, the built environment (bridges, buildings, roads, etc.), geotechnical constructions, tunnels, pipelines and wind turbines. Beforehand, a brief section was constructed around the recent progress on the study of the strain transfer mechanisms occurring in the multi-layered sensing system inherent to any DOFS deployment (different kinds of fiber claddings, coatings and bonding adhesives). Finally, a section is also dedicated to ideas and concepts for those novel DOFS applications which may very well represent the future of SHM.

Chemical and Biological Applications Based on Plasmonic Optical Fiber Sensors

2021 ◽  
Vol 24 (5) ◽  
pp. 50-55
Author(s):  
Chiara Perri ◽  
Francesco Arcadio ◽  
Girolamo D'Agostino ◽  
Nunzio Cennamo ◽  
Giovanni Porto ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Fiber Sensors ◽  
Biological Applications ◽  
Fiber Sensors
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