Directly Deposited Thin-Film Strain Gauges on Curved Metallic Surfaces

Ottermann, Rico; Klaas, Daniel; Dencker, Folke; Hoheisel, Dominik; Jung, S. G.; Wienke, Andreas; Düsing, Jan Friedrich; Koch, Jürgen; Wurz, Marc Christopher

doi:10.1109/sensors47087.2021.9639542

Cited by 6 publications

(5 citation statements)

References 2 publications

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“…In addition, they can also be applied on curved metallic surfaces. [ 220 ] The sensors can be used to measure physical quantities or operating conditions locally in machine components. In addition to monitoring the components, this also enables their targeted control with the inclusion of tribologically relevant measured variables.…”

Section: Sensor‐integrating Machine Elementsmentioning

confidence: 99%

A Review on Sensor‐Integrating Machine Elements

Kirchner,

Wallmersperger,

Gwosch

et al. 2024

Advanced Sensor Research

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This contribution summarizes the current state of research regarding so‐called sensor‐integrating machine elements as an enabler of digitalization in mechanical engineering and——if available—their application in industry. The focus is on the methodical aspects of the development of these machine elements in general as well as specific sensor‐integrating machine elements that are either already in use or currently under development. Developmental aspects include the robust design of initially evaluated concepts for sensor‐integrating machine elements as well as their modularization. Smart materials with sensory functions are included in the analysis as well as the differentiation with regard to add‐on sensors. The aim of the authors interlinked by a special research program funded by the German Research Foundation (DFG) is to facilitate the exchange with other researchers with the help of the comprehensive overview given in this contribution. The contribution concludes with a brief discussion of open challenges, such as the energy supply and data transfer in rotating systems and also data security.

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Section: Sensor‐integrating Machine Elementsmentioning

confidence: 99%

A Review on Sensor‐Integrating Machine Elements

Kirchner,

Wallmersperger,

Gwosch

et al. 2024

Advanced Sensor Research

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“…When using, the strain gauge needs to be attached to the measured object so that it expands and expands with the strain of the measured object, so that the metal foil inside elongates or shortens with the strain. Strain gauges use this principle to measure the strain by measuring the change in resistance [10][11] . The relationship between resistance change and strain is as follows:…”

Section: Hardware Circuit Designmentioning

confidence: 99%

Research on transmission line pin loosening state identification and early warning technology based on flexible sensing technology

He,

Yang,

Liu

2024

Fourth International Conference on Sensors and Information Technology (ICSI 2024)

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Based on the flexible pressure sensor, the pin sensor with pressure data as the monitoring quantity was developed by integrating the CC2530F256 ad hoc network communication module. The use of low-power technology to design software programs reduces the power consumption of the hardware system and improves the battery life of the hardware system. The effectiveness and reliability of the pin sensing monitoring system are verified by experiments, which makes it possible to monitor the pin status online. The sensor monitoring system has the advantages of low power consumption, low cost, small size, high reliability, and online monitoring. It can be widely used in the defect monitoring of insulator string pins of UHV transmission lines, and improve the level of digital operation and maintenance of UHV lines.

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“…Since the TCR should not depend on the alignment of the strain gauges, the results show an expected behavior of constant TCR values of the three strain gauges aligned in three different directions with a mean value of 92 ± 3 ppm/ • C. It is in good agreement with the alignment-independent resistivity, as explained before. The literature for constantan thin films shows values close to zero as well (−52 ppm/ • C [11], +75 ppm/ • C [14]) even though bulk values seem to be even lower (±10 ppm/ • C [30]). Differences can be found due to different substrate conditions or slightly different alloy compositions.…”

Section: Temperature Coefficient Of Resistance (Tcr)mentioning

confidence: 99%

“…They can generate data at previously inaccessible measurement positions [10] due to their small thickness of less than 5 µm [11]. They withstand temperatures up to at least 400 • C [12]-which surpasses the range of conventional polymer film-based sensors [13]-, have high adhesion on steel [12] and can be applied and structured on curved surfaces as well [14].…”

Section: Introductionmentioning

confidence: 99%

Degeneration Effects of Thin-Film Sensors after Critical Load Conditions of Machine Components

et al. 2022

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In the context of intelligent components in industrial applications in the automotive, energy or construction sector, sensor monitoring is crucial for security issues and to avoid long and costly downtimes. This article discusses component-inherent thin-film sensors for this purpose, which, in contrast to conventional sensor technology, can be applied inseparably onto the component’s surface via sputtering, so that a maximum of information about the component’s condition can be generated, especially regarding deformation. This article examines whether the sensors can continue to generate reliable measurement data even after critical component loads have been applied. This extends their field of use concerning plastic deformation behavior. Therefore, any change in sensor properties is necessary for ongoing elastic strain measurements. These novel fundamentals are established for thin-film constantan strain gauges and platinum temperature sensors on steel substrates. In general, a k-factor decrease and an increase in the temperature coefficient of resistance with increasing plastic deformation could be observed until a sensor failure above 0.5 % plastic deformation (constantan) occurred (1.3 % for platinum). Knowing these values makes it possible to continue measuring elastic strains after critical load conditions on a machine component in terms of plastic deformation. Additionally, a method of sensor-data fusion for the clear determination of plastic deformation and temperature change is presented.

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Directly Deposited Thin-Film Strain Gauges on Curved Metallic Surfaces

Cited by 6 publications

References 2 publications

A Review on Sensor‐Integrating Machine Elements

A Review on Sensor‐Integrating Machine Elements

Research on transmission line pin loosening state identification and early warning technology based on flexible sensing technology

Degeneration Effects of Thin-Film Sensors after Critical Load Conditions of Machine Components

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