Summary of results from an ultrasonic in-flight wing ice detection system

Hongerholt, Derrick D.; Willms, Gary; Rose, Joseph L.

doi:10.1063/1.1472908

Cited by 12 publications

(7 citation statements)

References 1 publication

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“…The application of ultrasonic guided waves includes various structures such as tear straps, landing gears, lap splice joints, and so on. Its aircraft applications are also presented in the references [38][39][40][41][42]. Ultrasonic guided waves can also be used to perform surgery by the harmonic scalpel.…”

Section: Ultrasonic Techniquementioning

confidence: 99%

Review of Structural Health Monitoring Techniques in Pipeline and Wind Turbine Industries

Sharma

Singh

Gupta

et al. 2021

ASI

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There has been enormous growth in the energy sector in the new millennium, and it has enhanced energy demand, creating an exponential rise in the capital investment in the energy industry in the last few years. Regular monitoring of the health of industrial equipment is necessary, and thus, the concept of structural health monitoring (SHM) comes into play. In this paper, the purpose is to highlight the importance of SHM systems and various techniques primarily used in pipelining industries. There have been several advancements in SHM systems over the years such as Point OFS (optical fiber sensor) for Corrosion, Distributed OFS for physical and chemical sensing, etc. However, these advanced SHM technologies are at their nascent stages of development, and thus, there are several challenges that exist in the industries. The techniques based on acoustic, UAVs (Unmanned Aerial Vehicles), etc. bring in various challenges, as it becomes daunting to monitor the deformations from both sides by employing only one technique. In order to determine the damages well in advance, it is necessary that the sensor is positioned inside the pipes and gives the operators enough time to carry out the troubleshooting. However, the mentioned technologies have been unable to indicate the errors, and thus, there is the requirement for a newer technology to be developed. The purpose of this review manuscript is to enlighten the readers about the importance of structural health monitoring in pipeline and wind turbine industries.

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Section: Ultrasonic Techniquementioning

confidence: 99%

Review of Structural Health Monitoring Techniques in Pipeline and Wind Turbine Industries

Sharma

Singh

Gupta

et al. 2021

ASI

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show abstract

“…To reduce unnecessary deicing actions and increase airplane availability, development of in situ ice thickness monitoring capability is strongly desired. Several techniques such as optics [4,5], microwave [6,7], microelectromechanical devices [8], and ultrasonics [9,10] have been reported to monitor ice thickness build-up.…”

Section: Introductionmentioning

confidence: 99%

“…The approach in this study can indicate but limit the detection and the size estimation of the ice thickness only in the area underneath the sensor or sensor array surface. The PAW technique in [9,10] using the variation of the propagation characteristics of the PAWs propagated along a long path length (e.g. meters) due to the effect of ice conditions can inform the averaged ice conditions along the path of the PAWs.…”

Section: Introductionmentioning

confidence: 99%

“…In situ monitoring of stabilizer outer skin thickness and ice thickness development from fractions of 1 mm to less than 1.5 mm will be demonstrated. The ultrasonic measurements to be carried out will use longitudinal acoustic waves, and the techniques reported in [9,10] employed plate acoustic waves (PAWs). The approach in this study can indicate but limit the detection and the size estimation of the ice thickness only in the area underneath the sensor or sensor array surface.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

In situice and structure thickness monitoring using integrated and flexible ultrasonic transducers

Liu¹,

Wu²,

Kobayashi³

et al. 2008

Smart Mater. Struct.

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Two types of ultrasonic sensors are presented for in situ capability development of ice detection and structure thickness measurement. These piezoelectric film based sensors have been fabricated by a sol-gel spray technique for aircraft environments and for temperatures ranging from −80 to 100• C. In one sensor type, piezoelectric films of thickness greater than 40 µmare deposited directly onto the interior of a 1.3 mm thick aluminum (Al) alloy control surface (stabilizer) of an aircraft wing structure as integrated ultrasonic transducers (UTs). In the other sensor type, piezoelectric films are coated onto a 50 µm thick polyimide membrane as flexible UTs. These were subsequently glued onto similar locations at the same control surfaces. In situ monitoring of stabilizer outer skin thickness was performed. Ice build-up ranging from a fraction of 1 mm to less than 1.5 mm was also detected on a 3 mm thick Al plate. Measurements using these ultrasonic sensors agreed well with those obtained by a micrometer. Tradeoffs of these two approaches are presented.

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“…In laboratory studies, such interface reflections were displayed on an oscilloscope. In recent years, ice detection and classification have been achieved by using the ultrasonic guided-wave technologies, in which the ice types were classified based on the dispersion characteristics of the phase and group velocity curves for waves in the multi-layer system (Vellekoop et al 1999;Hongerholt et al 2002;Gao and Rose 2009).…”

Section: Literature Reviewmentioning

confidence: 99%

Experimental Investigations on Transient Surface Water Transport and Ice Accreting Processes Pertinent to Aircraft Icing Phenomena

Liu¹

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Summary of results from an ultrasonic in-flight wing ice detection system

Cited by 12 publications

References 1 publication

Review of Structural Health Monitoring Techniques in Pipeline and Wind Turbine Industries

Review of Structural Health Monitoring Techniques in Pipeline and Wind Turbine Industries

In situice and structure thickness monitoring using integrated and flexible ultrasonic transducers

Experimental Investigations on Transient Surface Water Transport and Ice Accreting Processes Pertinent to Aircraft Icing Phenomena

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