Fatigue sensor for structural health monitoring: Design, fabrication and experimental testing of a prototype sensor

2015 ◽  
Vol 23 (2) ◽  
pp. 237-251 ◽  
Author(s):  
Subash Gokanakonda ◽  
Muralidhar K. Ghantasala ◽  
Daniel Kujawski
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Experimental Testing ◽  
Monitoring Design ◽  
Structural Health ◽  
Fatigue Sensor

scholarly journals Aluminum Foil Based Fatigue Sensor for Structural Health Monitoring of Carbon Fiber Composites

2015 ◽  
Vol 19 ◽  
pp. 307-312 ◽  
Author(s):  
Mikhail Burkov ◽  
Sergey Panin ◽  
Pavel Lyubutin ◽  
Alexander Eremin ◽  
Pavlo Maruschak ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Aluminum Foil ◽  
Fiber Composites ◽  
Carbon Fiber Composites ◽  
Structural Health ◽  
Fatigue Sensor

A mobile sensing system for structural health monitoring: design and validation

2010 ◽  
Vol 19 (5) ◽  
pp. 055011 ◽  
Author(s):  
Dapeng Zhu ◽  
Xiaohua Yi ◽  
Yang Wang ◽  
Kok-Meng Lee ◽  
Jiajie Guo
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Mobile Sensing ◽  
Monitoring Design ◽  
Structural Health ◽  
Sensing System

Beam Forming of Lamb Waves for Structural Health Monitoring

2007 ◽  
Vol 129 (6) ◽  
pp. 730-738 ◽  
Author(s):  
Steven E. Olson ◽  
Martin P. DeSimio ◽  
Mark M. Derriso
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Elastic Waves ◽  
Lamb Waves ◽  
Experimental Testing ◽  
Piezoelectric Transducers ◽  
Beam Forming ◽  
Advanced Technique ◽  
Structural Health ◽  
Support Costs

Structural health monitoring techniques are being developed to reduce operations and support costs, increase availability, and maintain safety of current and future air vehicle systems. The use of Lamb waves, guided elastic waves in a plate, has shown promise in detecting localized damage, such as cracking or corrosion, due to the short wavelengths of the propagating waves. Lamb wave techniques have been utilized for structural health monitoring of simple plate and shell structures. However, most aerospace structures are significantly more complex and advanced techniques may be required. One advanced technique involves using an array of piezoelectric transducers to generate or sense elastic waves in the structure under inspection. By adjusting the spacing and/or phasing between the piezoelectric transducers, transmitted or received waves can be focused in a specific direction. This paper presents beam forming details based on analytical modeling, using the finite element method, and experimental testing, using an array of piezoelectric transducers on an aluminum panel. Results are shown to compare well to theoretical predictions.

scholarly journals Foil fatigue sensor for «Structural Health Monitoring» systems

2013 ◽  
Vol 55 (2) ◽  
Author(s):  
М. В. Карускевич ◽  
О. Ю. Корчук ◽  
М. В. Лісовська
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Monitoring Systems ◽  
Structural Health ◽  
Health Monitoring Systems ◽  
Fatigue Sensor

scholarly journals A Low-Cost Phase-OTDR System for Structural Health Monitoring: Design and Instrumentation

Instruments ◽  
2019 ◽  
Vol 3 (3) ◽  
pp. 46 ◽  
Author(s):  
Filograno ◽  
Riziotis ◽  
Kandyla
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Low Cost ◽  
Field Studies ◽  
Time Domain Reflectometry ◽  
Real Field ◽  
Design Development ◽  
Monitoring Design ◽  
Structural Health ◽  
Wide Range

The design, development, and testing of a low-cost phase optical time-domain reflectometry (Phase-OTDR) system, intended for use in structural health monitoring (SHM) applications, are presented. Phase-OTDR is a technology that is growing and evolving at an impressive rate. Systems based on this principle are becoming very sensitive and elaborate and can perform very accurate condition monitoring, but at the same time, they are critically alignment-dependent and prohibitively costly to be considered as viable options in real field applications. Certain Phase-OTDR systems have been applied in real field studies, but these examples are mostly a proof-of-concept. The system presented here is the result of a compromise between performance and cost, using commercial components, specifically combined and tuned for SHM applications. The design and implementation of all the electronic and optoelectronic steps are presented, and the operation of the system is demonstrated, achieving a spatial resolution of ~6 m over 5 km. This work provides useful engineering guidelines for the low-cost implementation of Phase-OTDR systems. It is anticipated that the affordable development of such interrogation systems will promote their use in a wide range of SHM applications with moderate monitoring requirements and will assist the penetration of Phase-OTDR technology in the industry.

scholarly journals Model-Based Structural Health Monitoring of Box Girders

2021 ◽  
Vol 349 ◽  
pp. 03012
Author(s):  
Nicholas E. Silionis ◽  
Konstantinos N. Anyfantis
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Damage Identification ◽  
Experimental Testing ◽  
Identification Problem ◽  
Hull Girder ◽  
Structural Health ◽  
Model Based ◽  
Hull Structure ◽  
Bending Load

In the recent years, interest has been expressed towards incorporating Structural Health Monitoring (SHM) systems to ship hulls in order to transition from preventive to predictive maintenance procedures. In this work, an initial approach is undertaken to investigate the capabilities of a model-based method treating damage identification as an optimization problem solved using a genetic algorithm. An idealization of the hull structure is considered based on hull girder theory that allows for lab scale experimental testing. Specifically, a box girder is considered with a circular discontinuity as the generalized damage that causes extensive stress redistribution, replicating the effect of hull damage modes of interest. A three-point bending load case is considered to emulate still water bending loads. Damage is considered to exist, and the goal of the proposed strategy is to provide a prediction on its location and magnitude (level 2 SHM). This is achieved using strain measurements obtained from sensors located on theoretical zero-strain directions as inputs to the optimization scheme treating the damage identification problem. Results from both assessment strategies highlighted the influence of measurement-related uncertainties on the method’s predictive capabilities.

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