Guided wave diagnosis in composite grid structure with embedded FBG sensors

2007 ◽  
Author(s):  
Masataro Amano ◽  
Takeo Arai ◽  
Nobuo Takeda
Keyword(s):  
Guided Wave ◽  
Grid Structure ◽  
Fbg Sensors ◽  
Composite Grid

Development of highly reliable advanced grid structure (HRAGS) demonstrator using FBG sensors

2008 ◽  
Author(s):  
H. Takeya ◽  
K. Sekine ◽  
M. Kume ◽  
T. Ozaki ◽  
N. Takeda ◽  
...  
Keyword(s):  
Grid Structure ◽  
Fbg Sensors

Composite grid structure with near-zero thermally induced deflection

2000 ◽  
Author(s):  
K. Yoon ◽  
Hoon Park ◽  
H. Lee ◽  
C. Kim
Keyword(s):  
Grid Structure ◽  
Thermally Induced ◽  
Composite Grid

Microstructure-Mechanical Properties Correlations in Composite Grid Structures

2013 ◽  
Vol 668 ◽  
pp. 630-634
Author(s):  
Xai Mei Lu ◽  
Yun Fei Ma
Keyword(s):  
Mechanical Properties ◽  
Impact Resistance ◽  
High Strength ◽  
Light Weight ◽  
Load Testing ◽  
Mechanical Behaviors ◽  
Grid Structure ◽  
Unit Cells ◽  
Composite Grid ◽  
Energy Absorbing

The composite grid structure, which is highly efficient and strongly designable, posses a variety of excellent performances， such as light weight, high strength, and inherent impact resistance. This paper used experimental methods to investigate the composite grid structure consisting of quadrilateral unit cells. The authors made nine specimens composed of different unit-cell sizes of the grid structure, through a series of static and dynamic load testing on them, examined and further analyzed their mechanical behaviors and energy-absorbing capabilities, as well as compared their mechanical properties, thus found specific (new) correlations between microstructures and mechanical properties in composite grid structures.

3215 Guided Wave Diagnosis in Advanced Grid Structure

2006 ◽  
Vol 2006.6 (0) ◽  
pp. 139-140
Author(s):  
T. Arai ◽  
M. Amano ◽  
Y. Okabe ◽  
N. Takeda
Keyword(s):  
Guided Wave ◽  
Grid Structure

Composite Grid Structure with Near-Zero Thermally Induced Deflection

AIAA Journal ◽  
2001 ◽  
Vol 39 (3) ◽  
pp. 487-490
Author(s):  
K. Joon Yoon ◽  
Hoon C. Park ◽  
H. J. Lee ◽  
C. K. Kim
Keyword(s):  
Grid Structure ◽  
Thermally Induced ◽  
Composite Grid

scholarly journals A Novel Fabry-Pérot Optical Sensor for Guided Wave Signal Acquisition

Sensors ◽  
2020 ◽  
Vol 20 (6) ◽  
pp. 1728
Author(s):  
Cheng Xu ◽  
Zahra Sharif Khodaei
Keyword(s):  
Damage Detection ◽  
Guided Waves ◽  
Detection System ◽  
Guided Wave ◽  
Signal Acquisition ◽  
System A ◽  
Fabry Perot ◽  
Fbg Sensors ◽  
Improved Performance ◽  
New Sensors

In this paper, a novel hybrid damage detection system is proposed, which utilizes piezoelectric actuators for guided wave excitation and a new fibre optic (FO) sensor based on Fabry-Perot (FP) and Fiber Bragg Grating (FBG). By replacing the FBG sensors with FBG-based FP sensors in the hybrid damage detection system, a higher strain resolution is achieved, which results in higher damage sensitivity and higher reliability in diagnosis. To develop the novel sensor, optimum parameters such as reflectivity, a wavelength spectrum, and a sensor length were chosen carefully through an analytical model of the sensor, which has been validated with experiments. The sensitivity of the new FBG-based FP sensors was compared to FBG sensors to emphasize the superiority of the new sensors in measuring micro-strains. Lastly, the new FBG-based FP sensor was utilized for recording guided waves in a hybrid setup and compared to the conventional FBG hybrid sensor network to demonstrate their improved performance for a structural health monitoring (SHM) application.

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