Non-contact method to reduce contact problems between sample and electrode in dielectric measurements
| Autor: | Xiangdong Xu, Nathaniel Taylor, Jing Hao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
contact problem reduction Acoustics Sample (material) dielectric loss lcsh:QC501-721 Energy Engineering and Power Technology noncontact measurement method Dielectric Capacitance lcsh:Electricity Calibration contact method Limit (mathematics) Sensitivity (control systems) Annan elektroteknik och elektronik Electrical and Electronic Engineering Other Electrical Engineering Electronic Engineering Information Engineering air-reference measurements dielectric response measurement food and beverages electrode calibration electrodes error-sensitivity analysis Electrode dielectric materials Dielectric loss lcsh:Electrical engineering. Electronics. Nuclear engineering dielectric loss measurement lcsh:TK1-9971 |
| Zdroj: | High Voltage (2020) |
| DOI: | 10.1049/hve.2019.0334 |
| Popis: | Dielectric response measurement is a widely used technique for characterising dielectric materials in terms of theircapacitance and dielectric loss. However, the widely used approach with contact between samples and electrodes can in somecases limit the accuracy of the measurement. The authors introduce an easily realised electrode arrangement for non-contactmeasurements, which avoids these contact problems. The performance of the electrode arrangement in terms of the edge effectis assessed. The non-contact and contact methods are compared based on error-sensitivity analysis and experimental results.Differences are studied further, with attention to contact pressure. The non-contact method is also compared experimentally withthe one-sided non-contact method. Air-reference measurements, comparing the sample to an air-gap for improved calibration,are used for all measurements. The results show that the non-contact method can be an alternative to reduce contact problemsbetween the sample and electrodes, although error sensitivity can be higher when the non-contact method is used. The non-contact method can decrease the influence of the pressure applied to the sample compared to the contact method, and can alsoreduce the problem of poor contact that can arise from the absence of pressure in the one-sided non-contact method QC 20201019 |
| Databáze: | OpenAIRE |
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