Development of Wireless Sensing System for Structural Health Monitoring

2010 ◽  
Author(s):  
Kung-Chun Lu ◽  
Chin-Hsiung Loh
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Wireless Sensing ◽  
Structural Health ◽  
Sensing System ◽  
Wireless Sensing System

Structural Health Monitoring of Research-Scale Wind Turbine Blades

2013 ◽  
Vol 558 ◽  
pp. 364-373 ◽  
Author(s):  
Stuart G. Taylor ◽  
Kevin M. Farinholt ◽  
Gyu Hae Park ◽  
Charles R. Farrar ◽  
Michael D. Todd ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Embedded Systems ◽  
Wind Turbine ◽  
Health Monitoring ◽  
Turbine Blades ◽  
Field Tests ◽  
Ultrasonic Waves ◽  
Wind Turbine Blades ◽  
Structural Health ◽  
Sensing System

This paper presents ongoing work by the authors to implement real-time structural health monitoring (SHM) systems for operational research-scale wind turbine blades. The authors have been investigating and assessing the performance of several techniques for SHM of wind turbine blades using piezoelectric active sensors. Following a series of laboratory vibration and fatigue tests, these techniques are being implemented using embedded systems developed by the authors. These embedded systems are being deployed on operating wind turbine platforms, including a 20-meter rotor diameter turbine, located in Bushland, TX, and a 4.5-meter rotor diameter turbine, located in Los Alamos, NM. The SHM approach includes measurements over multiple frequency ranges, in which diffuse ultrasonic waves are excited and recorded using an active sensing system, and the blades global ambient vibration response is recorded using a passive sensing system. These dual measurement types provide a means of correlating the effect of potential damage to changes in the global structural behavior of the blade. In order to provide a backdrop for the sensors and systems currently installed in the field, recent damage detection results for laboratory-based wind turbine blade experiments are reviewed. Our recent and ongoing experimental platforms for field tests are described, and experimental results from these field tests are presented. LA-UR-12-24691.

scholarly journals Assessment of low-cost wireless sensors for structural health monitoring applications

2021 ◽  
Vol 14 (2) ◽  
Author(s):  
Emerson Toledo Júnior ◽  
Alexandre Cury ◽  
Jánes Landre Júnior
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Low Cost ◽  
Tall Buildings ◽  
Raspberry Pi ◽  
Structural Health ◽  
Vibration Data ◽  
Structural Problems ◽  
Implementation Costs ◽  
Wireless Sensing System

Abstract Structural Health Monitoring (SHM) programs play an essential task in the field of civil engineering, especially for assessing safety conditions involving large structures such as viaducts, bridges, stadiums, and tall buildings. In fact, some of these structures are monitored 24 hours a day, 7 days a week, to supply dynamic measurements that can be used for the identification of structural problems, e.g., presence of cracks, excessive vibration, damage, among others. SHM programs may provide automated assessment of structural health by processing vibration data obtained from sensors attached to the structure. Frequently, SHM uses wired systems, which are usually expensive due to the necessity of continuous maintenance and are not always suitable for sensing remote structures. Conversely, commercial wireless systems often demand high implementation costs. Hence, this paper proposes the use of a low-cost wireless sensing system based on the single board computer Raspberry Pi, which significantly reduces implementation expenses while keeping data’s integrity. The wireless communication is performed in real-time through a local wireless network, responsible for sending and receiving vibration data. The proposed system is validated by comparing its results with a commercial wired system through a series of controlled experimental applications. The results suggest that the proposed system is suitable for civil SHM applications.

scholarly journals An Investigation of Structural Damage Location Based on Ultrasonic Excitation-Fiber Bragg Grating Detection

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Yuegang Tan ◽  
Li Cai ◽  
Bei Peng ◽  
Lijun Meng
Keyword(s):  
Structural Health Monitoring ◽  
Damage Detection ◽  
Fiber Bragg Grating ◽  
Health Monitoring ◽  
Structural Damage ◽  
Detection System ◽  
Bragg Grating ◽  
Alloy Plate ◽  
Structural Health ◽  
Sensing System

With the continuous development of mechanical automation, the structural health monitoring techniques are increasingly high requirements for damage detection. So structural health monitoring (SHM) has been playing a significant role in terms of damage prognostics. The main contribution pursued in this investigation is to establish a detection system based on ultrasonic excitation and fiber Bragg grating sensing, which combines the advantages of the ultrasonic detection and fiber Bragg grating (FBG). Differencing from most common approaches, a new way of damage detection is based on fiber Bragg grating (FBG), which can easily realize distributed detection. The basic characteristics of fiber Bragg grating sensing system are analyzed, and the positioning algorithm of structural damage is derived in theory. On these bases, the detection system was used to analyze damage localization in the aluminum alloy plate of a hole with diameters of 6 mm. Experiments have been carried out to demonstrate that the sensing system was feasible and that the estimation method of the location algorithm was easy to implement.

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
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