Reliability of long-term monitoring data

Anderegg, P.; Brönnimann, Rolf; Meier, Urs

doi:10.1007/s13349-013-0047-2

Cited by 15 publications

(10 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Anderegg et al [3] presented a reliable analysis of structure monitoring systems. Therefore, sensors must be long-term qualified and might be replaced with new sensors during the life cycle of a structure.…”

Section: Reliability Of Structural Health Monitoring Systemsmentioning

confidence: 99%

See 1 more Smart Citation

The state of the art in structural health monitoring of cable-stayed bridges

2015

J Civil Struct Health Monit

202

View full text Add to dashboard Cite

Cable-stayed bridges are a type of long-span bridges that have been extensively constructed throughout the world. However, cable-stayed bridges suffer from a variety of performance deteriorations and natural disasters during their service time. Structural health monitoring, having emerged since the early 1990s, is regarded as an in situ field experimental technique to understand the behaviors and performance of real, full-scale bridges under real loadings and environmental conditions and to further ensure the safety, serviceability, durability, and sustainability of bridges. In this paper, the existing various monitoring technologies for cable-stayed bridges developed are overviewed. The design approaches of structural health monitoring systems for cable-stayed bridges are introduced. The data analysis, modeling, and safety evaluation of cable-stayed bridges based on structural health monitoring technology are addressed. The applications of structural health monitoring technology for cablestayed bridges are summarized. The design code for structural health monitoring systems is described for large highway bridges (including cable-stayed bridges) that are authorized by the Ministry of Transportation in China. Finally, this study discusses the challenges and future trends in structural health monitoring technologies for cable-stayed bridges, particularly for data-driven science and technology in structural health monitoring field.

show abstract

Section: Reliability Of Structural Health Monitoring Systemsmentioning

confidence: 99%

“…Temperature sensor (54 in all) Uniaxial accelerometer (2) Propeller anemometer (1) Uniaxial accelerometer (2) Uniaxial accelerometer (2) Strain gauge (32) Displacement transducer (3) Ultrasonic anemometer (2) Right Left Uniaxial accelerometer (3) …”

Section: Cable Tension Sensor (54 In All)mentioning

confidence: 99%

The state of the art in structural health monitoring of cable-stayed bridges

2015

J Civil Struct Health Monit

202

View full text Add to dashboard Cite

show abstract

“…Nonetheless, previous studies provide insights. For instance, with respect to installation, resistive strain-gauges employing a similar substrate (polyimide) show successful installation and operation on three bridges over periods exceeding 12 years [21]. Studies of other sensors (fiber optic), having a similar substrate [22] and using similar adhesives for bonding [23], show similar long-term performance.…”

Section: Application Driver: Structural Health Monitoringmentioning

confidence: 99%

“…Studies of other sensors (fiber optic), having a similar substrate [22] and using similar adhesives for bonding [23], show similar long-term performance. With respect to stability, resistive strain gauges have been measured to have drift on the order of 1 "/year [21], which is well below that required for damage detection [20] and dynamic monitoring [24] and can also be negated using a stable reference (such as fiberoptic sensor based on Bragg-gratings [21]). Further, to address temperature stability several successful approaches have been explored (e.g., [21] and [22]).…”

Section: Application Driver: Structural Health Monitoringmentioning

confidence: 99%

Enabling Scalable Hybrid Systems: Architectures for Exploiting Large-Area Electronics in Applications

Verma

Huang

et al. 2015

Proc. IEEE

View full text Add to dashboard Cite

| By enabling diverse and large-scale transducers, large-area electronics raises the potential for electronic systems to interact much more extensively with the physical world than is possible today. This can substantially expand the scope of applications, both in number and in value. But first, translation into applications requires a base of system functions (instrumentation, computation, power management, communication). These cannot be realized on the desired scale by large-area electronics alone. It is necessary to combine largearea electronics with high-performance, high-efficiency technologies, such as crystalline silicon CMOS, within hybrid systems. Scalable hybrid systems require rethinking the subsystem architectures from the start by considering how the technologies should be interfaced, on both a functional and physical level. To explore platform architectures along with the supporting circuits and devices, we consider, as an application driver, a self-powered sheet for high-resolution structural health monitoring (of bridges and buildings). Top-down evaluation of design alternatives within the hybrid design space and pursuit of template architectures exposes circuit functions and device optimizations traditionally overlooked by bottomup approaches alone.

show abstract

“…For instance, the study by Anderegg et al, in which the measurement uncertainty and reliability of 17 years worth of data acquired by fiber-optic bridge monitoring were discussed, yielded much knowledge about the required sensor specifications and the issues concerning system installation. (7) The authors' group has also been working on a structural monitoring project of an existing bridge in Japan since 2011. The installed sensing system was constructed using fiber Bragg grating (FBG) sensors, and the acquired strain data have actually been used in the study to develop a structural condition assessment algorithm based on time-series analysis.…”

Section: Introductionmentioning

confidence: 99%

Quality Evaluation of Fiber-Optic Strain Data Acquired in Long-Term Bridge Monitoring

2017

Sensors and Materials

View full text Add to dashboard Cite

The qualities of fiber Bragg grating (FBG) strain data acquired in the long-term structural health monitoring of an existing concrete bridge were evaluated in this study. The possible sources of errors in the acquired data were first considered on the basis of the principle of the FBG sensor and the details of the installation of system components: FBGs, cables, epoxy, FBG interrogator, and data acquisition system. The data reliability was first evaluated by a defined measure: the availability ratio of FBG peak wavelengths throughout the period of 2012-2014. It was then said that the high reliabilities of the FBG interrogator and data acquisition system were ensured; however, reliability reduction was observed in some FBGs. The stability was also evaluated on the basis of the accuracy and sensitivity. A characteristic disturbance in the data accuracy, which is the standard deviation of the acquired FBG peak wavelength, was recognized only in specific FBGs. Moreover, the attachment condition issues in some FBGs were also recognized by sensitivity analyses. The results and considerations in this paper indicated the importance of those data quality analyses for the appropriate use of the long-term data in structural condition assessment throughout the life of existing civil infrastructures.

show abstract

Reliability of long-term monitoring data

Cited by 15 publications

References 12 publications

The state of the art in structural health monitoring of cable-stayed bridges

The state of the art in structural health monitoring of cable-stayed bridges

Enabling Scalable Hybrid Systems: Architectures for Exploiting Large-Area Electronics in Applications

Quality Evaluation of Fiber-Optic Strain Data Acquired in Long-Term Bridge Monitoring

Contact Info

Product

Resources

About