scholarly journals Hybrid Fiber Optic Sensor Systems in Structural Health Monitoring in Aircraft Structures

Materials ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2249
Author(s):  
Karolina Bednarska ◽  
Piotr Sobotka ◽  
Tomasz Ryszard Woliński ◽  
Oliwia Zakręcka ◽  
Wiktor Pomianek ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Fiber Optics ◽  
Health Monitoring ◽  
Composite Structures ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Aviation Industry ◽  
Hybrid Fiber ◽  
Aircraft Structures ◽  
Structural Health

‘Smart’ structural health monitoring of composite materials with optical fiber sensors is becoming more and more important, especially in the aviation industry. This paper presents an overview of hybrid fiber-optic sensing systems based on scattering techniques, fiber Bragg gratings, interferometric techniques, and polarimetric methods in structural health monitoring. The main purpose of this manuscript is to analyze the possibilities of using hybrid sensors based on fiber optics to monitor composite structures, with a particular emphasis on aircraft structures. Since it is difficult to indicate the most comprehensive approach due to different parameters of the described sensors, the review contains a detailed description of available solutions. We hope that this work will allow for a better and faster selection of the right solution for the problem at hand.

A Strain Sensing Structural Health Monitoring System for Delaminated Composite Structures

2012 ◽  
Vol 249-250 ◽  
pp. 849-855 ◽  
Author(s):  
Andrea Alaimo ◽  
Alberto Milazzo ◽  
Calogero Orlando
Keyword(s):  
Structural Health Monitoring ◽  
Fiber Optics ◽  
Health Monitoring ◽  
Composite Structures ◽  
Piezoelectric Sensors ◽  
Strain Sensing ◽  
Health Monitoring System ◽  
Structural Health ◽  
Monitoring Model ◽  
Element Approach

Structural Health Monitoring (SHM) for composite materials is becoming a primary task due to their extended use in safety critical applications. Different methods, based on the use of piezoelectric transducers as well as of fiber optics, has been successfully proposed to detect and monitor damage in composite structural components with particular attention focused on delamination cracks.In the present paper a Structural Health Monitoring model, based on the use of piezoelectric sensors, already proposed by the authors for isotropic damaged components, is extended to delaminated composite structures. The dynamic behavior of the host damaged structure and the bonded piezoelectric sensors is modeled by means of a boundary element approach based on the Dual Reciprocity BEM. The sensitivity of the piezoelectric sensors has been studied by varying the delamination length characterizing the skin/stiffener debonding phenomenon of composite structures undergoing dynamic loads.

An In-depth Review: Structural Health Monitoring using Fiber Optic Sensor

2012 ◽  
Vol 29 (2) ◽  
pp. 105 ◽  
Author(s):  
MuhammadHassan Bin Afzal ◽  
Shahid Kabir ◽  
Othman Sidek
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Structural Health ◽  
Optic Sensor

scholarly journals Structural Health Monitoring for Advanced Composite Structures: A Review

2020 ◽  
Vol 4 (1) ◽  
pp. 13 ◽  
Author(s):  
Alfredo Güemes ◽  
Antonio Fernandez-Lopez ◽  
Angel Renato Pozo ◽  
Julián Sierra-Pérez
Keyword(s):  
Structural Health Monitoring ◽  
Fiber Optics ◽  
Health Monitoring ◽  
Composite Structures ◽  
Guided Waves ◽  
Probability Of Detection ◽  
Sensor Data ◽  
Structural Health ◽  
Early Fault Detection ◽  
Pod Analysis

Condition-based maintenance refers to the installation of permanent sensors on a structure/system. By means of early fault detection, severe damage can be avoided, allowing efficient timing of maintenance works and avoiding unnecessary inspections at the same time. These are the goals for structural health monitoring (SHM). The changes caused by incipient damage on raw data collected by sensors are quite small, and are usually contaminated by noise and varying environmental factors, so the algorithms used to extract information from sensor data need to focus on sensitive damage features. The developments of SHM techniques over the last 20 years have been more related to algorithm improvements than to sensor progress, which essentially have been maintained without major conceptual changes (with regards to accelerometers, piezoelectric wafers, and fiber optic sensors). The main different SHM systems (vibration methods, strain-based fiber optics methods, guided waves, acoustic emission, and nanoparticle-doped resins) are reviewed, and the main issues to be solved are identified. Reliability is the key question, and can only be demonstrated through a probability of detection (POD) analysis. Attention has only been paid to this issue over the last ten years, but now it is a growing trend. Simulation of the SHM system is needed in order to reduce the number of experiments.

Fiber optic sensor reliability issues in structural health monitoring

2005 ◽  
Author(s):  
Zhihong Xu ◽  
Asadollah Bassam ◽  
Hongqiang Jia ◽  
Adam Tennant ◽  
Farhad Ansari
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Structural Health ◽  
Optic Sensor
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