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Structural health monitoring plays an important role in protecting civil infrastructures. Smart film bionic monitoring method and video image monitoring method have advantages of high speed and perceptual intuition, so they have been well applied in structural health monitoring. However, the two methods are difficult in detecting structural stress condition and limited in some monitoring aspects....
The Timber Health Monitoring System, which enables constant monitoring of wooden buildings by artificial intelligence based analysis of the signals of a piezoelectric sensor attached to a piece of timber, is proposed. Basic verification was carried out by modeling timber damage and performing vibration tests. Analysis of the obtained waveform data using the k-nearest neighbor (k-NN) method and a support...
Traffic produces seismic and acoustic waves. These waves affect both bystanders and civil infrastructures in terms of health issues and of complication in the maintenance, rehabilitation, assessment and monitoring processes, respectively. Therefore, it is increasingly important to reduce, or at least to monitor these annoyances through methods that are capable to take advantage of the potentialities...
WSN(Wireless Sensor Network) is an application specific network. There is no general optimized solution for WSN problems. It depends upon application, resource availability. Structural health monitoring (SHM) using wireless sensor networks has drawn considerable attention in recent years. It is an active area of research that can autonomously and proactively assess the structural integrity of buildings,...
Structural health monitoring, such as bridge and building is important. The wireless and passive sensor is the best for the monitoring. An impedance-loaded surface acoustic wave (SAW) sensor is a combination of a SAW device and a classical sensor. If the impedance-loaded SAW sensor can apply to the structural health monitoring, wireless sensing system is realized. For the monitoring, damage of the...
Wireless sensor networks (WSNs) are one of the emerging technologies in the 21st century. In the structural health monitoring (SHM). WSNs are used as one of the vitally capable technologies in the SHM. The accelerometer module in the existing sensor nodes enables several novel applications. In this paper, a prototype for monitoring and detecting the damage for the real bridge using these sensor nodes...
As we know that energy is important part of our life. Energy available in different form like heat energy, solar energy, wind energy, etc. In our day to day life importance of alternative and renewable energy source increases year by year because of limited availability of non-renewable energy source. Hence it is necessary to take preventive action and increase the use of renewable energy source....
In this paper the performance of a new optical sensor based on a bundle of optical fibres is analysed. An inductive sensor with proven capacity to carry out blade tip timing measurements in real aircraft engines applications is used as reference. The results of the optical sensor show a good correlation with those provided by the inductive sensor, demonstrating the suitability of the optical sensor...
This paper presents a novel electromagnetic-based bridge energy harvester (EBEH) utilizing bridge vibrations and ambient wind to harvest energy for wireless sensor nodes (WSNs) used for monitoring the health of bridges. The architecture, working principle, fabrication and characterization of the harvester is discussed. The harvester consists of a fixed wound coil, a permanent magnet, an airfoil, a...
Fast computers and sophisticated numerical methods along with sound mathematical models have enabled structural health monitoring to emerge as an efficient means of evaluating the health of a structure and detect any damage to enable appropriate retrofitting. This paper uses vibration based methods to develop and apply techniques to detect the damage in beam and plate structures that form important...
This paper reviews energy harvesting technologies for structural health monitoring applications. Structural health monitoring (SHM) is the process of damage detection in machinery, aerospace, and civil structures. There is a great deal of interest across a broad section of industries in obtaining technology that can be used to monitor the health of machinery and structures. In particular, the need...
This paper discusses a Structural Health Monitoring framework developed for aircraft airframes, where the objective is high performance vibration-based diagnostics using validated data from low power and miniaturized smart sensors. Although considerable research has been devoted to the structural health monitoring discipline, successful field implementations have not been widely achieved. This research...
A continuous wave (CW) radar sensor system with active transponders is designed for Structural Health Monitoring (SHM) to accurately measure the structures' vibration while rejecting clutters reflected from the surrounding environment. The radar sensor, designed with a coherent heterodyne architecture, transmits a single-tone 2.4 GHz signal and receives a returning signal at 3.3 GHz, thus rejecting...
Cable tension force is one of the most important criteria for assessing the work condition of a cable-stayed bridge. As a result, it is necessary to be monitored during operation. Rapid development of wireless sensor network (WSN) technology makes it possible to realize cable tension monitoring conveniently. In this paper, a wireless sensor network based monitoring system was proposed for cable tension...
This demonstration shows the usage of a heterogeneous sensor node (HaLOEWEn) for structural health monitoring applications. It employs the Random Decrement technique to aggregate compressed structural health data from a long-term stream of raw sensor data.
Since the first attempts of Structural Health Monitoring the Vienna Consulting Engineers (VCE) have been involved to advance the BRIMOS technology which offers a wide range of services to engineers and operators of infrastructure networks. Over the last decade the dynamic behavior of hundreds of structures has been measured and evaluated. However, the current practice in Structural Health Monitoring...
In recent years, research on using wireless sensor networks (WSNs) for structural health monitoring (SHM) has attracted increasing attention. Unlike other monitoring applications, detection of possible structure damage requires significant amount of domain knowledge that computer science researchers are usually unfamiliar with. As a result, most previous work in WSN-based SHM was done by researchers...
In this work a novel wavelet-fuzzy logic approach to structural health monitoring is proposed based on wavelet transform theory and fuzzy logic technology. The proposed method combines the effectiveness of the Wavelet Packet Transform (WPT) as a tool for feature extraction and the capabilities of fuzzy sets to model vagueness and uncertainty. Two stages of operation are considered: pattern training...
Wireless sensor network (WSN)becomes a research hotspot of structural health monitoring(SHM) with the characteristics such as convenience for remote monitoring, good fault-tolerant ability, easiness of system maintenance ,etc. In this paper, a WSN for bridge SHM is designed and deployment on the ZhengDian viaduct in Wuhan. In this deployment, 20 wireless nodes are distributed over the main span, collecting...
Buried pipe lines are an efficient way of transporting of water, sewage, oil, and gas resources in all over the world. Since the buried pipe lines are exposed to many unexpected conditions, such as landslides, corrosion, fatigue, earthquakes, material flaws or even intentional damaging, so the inspection requirements lead to adoption of new method of maintenance, protection and conserving. This report...
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