Structural Health Monitoring of a UAV Fleet Using Fiber Optic Distributed Strain Sensing

Shapira, Osher; Ben-Simon, U.; Bergman, Arik; Shoham, Shay; Glam, Benny; Kressel, Iddo; Yehoshua, Tal; Tur, Moshe

doi:10.12783/shm2015/371

Cited by 13 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A few industrial applications are leading the way. For example, [73] describes an SHM system used for airworthiness assessment of the entire Israel Aerospace Industries HALE UAV fleet which is based on distributed strain sensing with embedded optical fibers.…”

Section: Discussionmentioning

confidence: 99%

Structural Health Monitoring for Advanced Composite Structures: A Review

et al. 2020

View full text Add to dashboard Cite

Condition-based maintenance refers to the installation of permanent sensors on a structure/system. By means of early fault detection, severe damage can be avoided, allowing efficient timing of maintenance works and avoiding unnecessary inspections at the same time. These are the goals for structural health monitoring (SHM). The changes caused by incipient damage on raw data collected by sensors are quite small, and are usually contaminated by noise and varying environmental factors, so the algorithms used to extract information from sensor data need to focus on sensitive damage features. The developments of SHM techniques over the last 20 years have been more related to algorithm improvements than to sensor progress, which essentially have been maintained without major conceptual changes (with regards to accelerometers, piezoelectric wafers, and fiber optic sensors). The main different SHM systems (vibration methods, strain-based fiber optics methods, guided waves, acoustic emission, and nanoparticle-doped resins) are reviewed, and the main issues to be solved are identified. Reliability is the key question, and can only be demonstrated through a probability of detection (POD) analysis. Attention has only been paid to this issue over the last ten years, but now it is a growing trend. Simulation of the SHM system is needed in order to reduce the number of experiments.

show abstract

Section: Discussionmentioning

confidence: 99%

Structural Health Monitoring for Advanced Composite Structures: A Review

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Among these are NASA's Shuttle Modal Inspection System for subsystem's inspection, 132 and the Israeli's Air Force unmanned aerial vehicle (UAV) planes for damage detection during flight operations. 133 Recently, the first real-world application of EMISbased SHM was documented in Singapore, where monitoring of a mass rapid transit (MRT) heavy metro station's structure is performed during construction operations. 134 However, despite these efforts, SHM systems are far from commercial use.…”

Section: Hardware For Impedance Measurementmentioning

confidence: 99%

A review of structural health monitoring of bonded structures using electromechanical impedance spectroscopy

Tenreiro

Lopes

Silva

2021

Structural Health Monitoring

View full text Add to dashboard Cite

The article presents a literature review of electromechanical impedance spectroscopy for structural health monitoring, with emphasis in adhesively bonded joints. The concept behind electromechanical impedance spectroscopy is to use variable high-frequency structural vibrations with piezoelectric elements to monitor the local area of a structure for changes in mechanical impedance that may indicate imminent damage. Various mathematical models that correlate the structural impedance with the electric response of the piezoelectric sensors are presented. Several algorithms and metrics are introduced to detect, localize, and characterize damage when using electromechanical impedance spectroscopy. Applications of electromechanical impedance spectroscopy to study adhesive joints are described. Research and development of alternative hardware for electromechanical impedance spectroscopy is presented. The article ends by presenting future prospects and research of electromechanical impedance spectroscopy–based structural health monitoring, and, while advances have been made in algorithms for damage detection, localization, and characterization, this technology is not mature enough for real-world applications.

show abstract

“…The damaged configuration shows local structural irregularity providing a non-null difference signal between the same sensor at different time acquisitions or adjacent sensors at the same instant of time. [23][24][25][26] The method starts with the elaboration of the strain distribution, which is acquired after each induced impact. Then a set of gradient features are extracted.…”

Section: Introductionmentioning

confidence: 99%

Application of structural health monitoring techniques to composite wing panels

Romano

Ciminello

Sorrentino

et al. 2019

Journal of Composite Materials

View full text Add to dashboard Cite

This detailed study proposes a structural health monitoring system which enables the identification, localisation, and correct measurement analysis, in relation to the damage and debonding induced by low energy impacts within aircraft composite wing panels. The said system has been envisaged as an offline system which aims to be considered as a valid alternative method in relation to the current first two maintenance approach levels: visual inspection, which is to be followed if necessary by ultrasonic scanning techniques. The architecture includes two different technologies which act at different frequency ranges: high-frequency sensors/actuators piezoceramics and low-frequency distributed fiber optic sensors. Experimental and numerical results on small stiffened panels are illustrated in this study, where technological verification and validation have been assessed within a laboratory-controlled environment. In addition, the potential benefit by utilising such techniques within the design of the aircraft composite structures has also been illustrated; in comparison with the current aircraft composite structures, a higher weight saving and better performing structures is foreseen.

show abstract

Structural Health Monitoring of a UAV Fleet Using Fiber Optic Distributed Strain Sensing

Cited by 13 publications

References 0 publications

Structural Health Monitoring for Advanced Composite Structures: A Review

Structural Health Monitoring for Advanced Composite Structures: A Review

A review of structural health monitoring of bonded structures using electromechanical impedance spectroscopy

Application of structural health monitoring techniques to composite wing panels

Contact Info

Product

Resources

About