High-speed high-resolution fiber Bragg grating matrix structural health monitoring system

2007 ◽  
Author(s):  
Kelvin Chau ◽  
Pizhong Qiao ◽  
Wayhu Lestari ◽  
Richard J. Black ◽  
Behzad Moslehi
Keyword(s):  
High Resolution ◽  
Structural Health Monitoring ◽  
Fiber Bragg Grating ◽  
Monitoring System ◽  
Health Monitoring ◽  
High Speed ◽  
Bragg Grating ◽  
Health Monitoring System ◽  
Structural Health ◽  
Structural Health Monitoring System

POTENTIAL OF BRAGG GRATING SENSORS FOR AIRCRAFT HEALTH MONITORING

2007 ◽  
Vol 31 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Nezih Mrad
Keyword(s):  
Structural Health Monitoring ◽  
Monitoring System ◽  
Health Monitoring ◽  
Bragg Grating ◽  
Fibre Optic ◽  
Fibre Optic Sensor ◽  
Health Monitoring System ◽  
Structural Health ◽  
Structural Health Monitoring System ◽  
Optic Sensor

The increased requirement to operate military platforms and aerospace structures beyond their designed life imposes heavy maintenance and inspection burden on aircraft operators and owners. In-service structural health monitoring is potentially a cost-effective approach by which service usage information can be obtained and knowledgeable decisions can be made. Advanced sensor technology, such as optical fibres, are expected to provide existing and future aircraft with added intelligence and functionality, reduced weight and cost, enhanced robustness and performance. This paper furthers the understanding of technical and practical issues related to full implementation of a fibre optic sensor based structural health monitoring system for aerospace and military platforms. It also reports experimental findings on the use of fibre Bragg grating sensors for measurement of parameters relevant to aircraft structural monitoring and smart structures; with an emphasis on the suitability of multifunctional fibre optic sensor system. Experimental evaluations revealed that Bragg grating sensors correlate well with conventional sensors technology for temperature, stain, crack growth and cure monitoring and were insensitive to pressures up to 300 psi. These sensors were determined to have minimum impact on the structural integrity when embedded parallel to host fibres into composite laminates. Recommendations on the implementation and integration of these sensors into a structural health monitoring system are also provided.

Design and organisation of structural health monitoring system on high-speed railway bridge constructions

2017 ◽  
pp. 211-222 ◽  
Author(s):  
Andrei Belyi ◽  
Aleksei Baranovskii ◽  
Dmitrii Vorobiev ◽  
Kirill Dolinskii ◽  
Leonid Dyachenko ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Monitoring System ◽  
Health Monitoring ◽  
High Speed ◽  
Practical Importance ◽  
Point Of View ◽  
High Speed Railway ◽  
Health Monitoring System ◽  
Structural Health ◽  
Structural Health Monitoring System

Objective: Structural health monitoring actions designing for high-speed railway engineering constructions to decrease risk of loss consumer properties of bearing designs Methods: The analysis and accounting of the specific conditions and impacts inherent in constructions of high-speed railways, in total with the existing normative and regulatory documents, and also international background of design and development of structural health monitoring systems on bridge objects. The system approach to the solution of the formulated purpose which is expressed in preparation of the project decisions that are based on the integrated principles of functioning of developed structural health monitoring system. Results: Project decisions on structural health monitoring system of high-speed railway Moscow-Kazan-Yekaterinburg constructions were made. In particular, the actions for the monitoring organization on the unified designs of superstructures and piers (including their separate elements) are developed, considering both static and dynamic components of impacts and loadings being planned. The key parameters subject to monitoring are: absolute and relative designs shift; dynamic characteristics; the stressed-deformed condition of superstructure, piles, a rail and rail temperature. Practical importance: The actions, developed by authors and stated in the article, for design and organization of bridge constructions structural health monitoring on high-speed railways have no analogs in domestic practice so far. Cost efficiency and the unified approach to the proposed solutions were considered as of primary importance in the given study. From the practical point of view, in the future, these actions will make it possible to provide and support the set standard (project) levels of reliability, safety and durability of bridge constructions

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