A contact resistance measurement setup for the study of novel contacts

Puyol, Rafael; Súarez, Sebastián

doi:10.1109/urucon.2017.8171881

Cited by 9 publications

(7 citation statements)

References 5 publications

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“…For each force applied, ten measurements were taken. Further specifics about the measurement setup can be found in the study by Puyol et al [30] Finally, the coating's wetting behavior at room temperature was analyzed by sessile drop testing in a Krüss DSA 100B Drop Contour Analyzer. Deionized water was used to determine the contact angle, with a droplet volume of 3 μL.…”

Section: Methodsmentioning

confidence: 99%

Near Superhydrophobic Carbon Nanotube Coatings Obtained via Electrophoretic Deposition on Low‐Alloy Steels

Alderete

MacLucas

Espin³

et al. 2021

Adv Eng Mater

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Sucker rods are a key element in certain oil-extraction processes as they link the motor group on the surface with the pumps located downhole. During the transport from the production site toward the extraction well, these components are prone to corrosion. A hydrophobic carbon nanotube (CNT) coating, deposited via electrophoretic deposition (EPD), is proposed as a protective layer, shielding the rods from harsh environmental conditions. Three different coating systems are considered and thoroughly characterized (depending on the additive that is used to deposit the CNT), namely, magnesium nitrate hexahydrate (Mg-Nit), triethylamine (TEA), and a duplex coating (DD). The latter presents an approach which combines the advantages of each additive, mechanical stability from Mg-Nit and strong hydrophobicity from TEA (near superhydrophobic). The former coatings are further processed to overcome their individual shortcomings, resulting in an increase in the coating's stability for TEA coating, as well as transforming the hydrophilic Mg-Nit surface into a hydrophobic surface.

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Section: Methodsmentioning

confidence: 99%

Near Superhydrophobic Carbon Nanotube Coatings Obtained via Electrophoretic Deposition on Low‐Alloy Steels

Alderete

MacLucas

Espin³

et al. 2021

Adv Eng Mater

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“…Determining the ECR of contact materials has been previously reported by Puyol et al., [4] , [5] , [6] where a setup was developed with the primary objective of determining low-level load-dependent ECR. This setup was able to quantify the ECR in the µΩ range with a measurement error below 10% for loads below 1 N, and below 1% for loads above 1 N. However, this setup is limited by the linear stage.…”

Section: Methods Detailsmentioning

confidence: 99%

“…The electric components are the same as described by Puyol et al. [4] , current/voltage source (E1) and nanovoltmeter (E2). E1 is capable of sourcing current from 1 nA to 1.05 A, and voltage from 200 µV to 210 V from its rear control panel terminals.…”

Section: Methods Detailsmentioning

confidence: 99%

Multipurpose setup used to characterize tribo-electrical properties of electrical contact materials

et al. 2021

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Electrical contacts are pervasively found on countless modern devices and systems. It is imperative that connecting components present adequate electrical, mechanical, and chemical characteristics to fulfill the crucial role that they play in the system. To develop an electrical contact material that is tailored for a specific application, different approaches are pursued (e.g., coatings, reinforced composites, alloyed metals, duplex systems, etc.). The manufacturing of electrical contact materials demand a thorough characterization of their electrical properties, mechanical properties, and their resistance to wear, as well as their resistance to atmospheric conditions. Accordingly, commissioning of a novel setup enables a more comprehensive study of the materials that are developed. Therefore, a complete understanding of the material's electrical and tribological characteristics are attained, allowing the production of a material that is compliant with the particular demands of the application for which it is intended. This multipurpose setup was built with higher precision stages and higher accuracy 3-axis force sensor, thus providing the following improvement over the preceding setup: Elevated load-bearing capacity (double), higher precision and stability. Tribo-electrical characterization (implementation of scratch and fretting tests). Environmental control (climate and external vibration).

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“…Relays need to act promptly according to set targets in order to ensure rapid connection and disconnection of this part of the circuit. Failure to act in a timely manner may cause unpredictable losses due to chain reactions [13,14]. Therefore, the action time (pickup time, dropout time) was selected as a feature parameter in order to understand the changes in relay performance [15].…”

Section: Feature Selection and Extractionmentioning

confidence: 99%

“…If it is not resolved in time, accidents can occur. Therefore, it is necessary to establish relevant models to achieve its status recognition [13,14]. As mentioned earlier, important indicators for judging the relay's own status include characteristics such as pull-in time, release time, pull-in voltage, and release voltage.…”

Section: Relay Life Assessmentmentioning

confidence: 99%

Research on the Reliability Test and Life Assessment Methods of Relays Used in Circuit Breaker Operating Mechanism

Zhou

Gao

et al. 2023

Energies

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As one of the key components of the circuit breaker operating mechanism, the relay can experience performance degradation due to harsh environmental factors, such as salt spray, during operation, which can ultimately affect the normal operation of the circuit breaker and threaten the safe and stable operation of the power system. To effectively evaluate the condition of the relay operating in salt spray environments over the long term, this study conducted accelerated aging experiments on a certain model of auxiliary switch under salt spray conditions using an existing test platform. The relay’s pull-in voltage, release voltage, pull-in time, and release time were analyzed as characteristic parameters affected by salt spray. The results showed that the intrusion of salt spray caused a decline in the coil performance of the relay, which required higher voltage to provide the electromagnetic force needed for operation, leading to an increase in operating voltage. On the other hand, coil degradation also caused a decrease in the electromagnetic force generated by the step voltage, resulting in a slower operating time. Subsequently, a Genetic Algorithm_Back Propagation Neural Network GA_BP) algorithm model suitable for identifying the relay status in this study was established. After optimization by a Genetic Algorithm Neural Network (GA), the recognition accuracy increased from 78.6% to 91.8%, which showed significant improvement. By clarifying the changes in the characteristic parameters of the relay in a salt spray environment and relying on experimental data, this study established a relevant state recognition model. The research results have important engineering application value for understanding the relay operating status of the circuit breaker operating mechanism in salt spray environments, conducting circuit breaker operating mechanism relay life prediction, and preventing circuit breaker operating mechanism failures.

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A contact resistance measurement setup for the study of novel contacts

Cited by 9 publications

References 5 publications

Near Superhydrophobic Carbon Nanotube Coatings Obtained via Electrophoretic Deposition on Low‐Alloy Steels

Near Superhydrophobic Carbon Nanotube Coatings Obtained via Electrophoretic Deposition on Low‐Alloy Steels

Multipurpose setup used to characterize tribo-electrical properties of electrical contact materials

Research on the Reliability Test and Life Assessment Methods of Relays Used in Circuit Breaker Operating Mechanism

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