Measurement of the electric potential at the surface of nonuniformly charged polypropylene nonwoven media - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Physics: Conference Series Année : 2015

Measurement of the electric potential at the surface of nonuniformly charged polypropylene nonwoven media

Résumé

The aim of this paper is to establish the conditions in which the vibrating capacitive probe of an electrostatic voltmeter could be employed for mapping the electric potential at the surface of non-uniformly charged insulating bodies. A first set of experiments are performed on polypropylene non-woven media (thickness: 0.4 mm; fiber diameter: 20 μm) in ambient air. In a second set of experiments the non-uniformity of charge is simulated using five copper strips (width: 2 mm or 3 mm; distance between strips: 2 mm). All the strips are connected to a high-voltage supply (Vs = 1000 V). The sample carrier is attached to a computer-controlled positioning system that transfers it under the capacitive probe (TREK, model 3451) of an electrostatic voltmeter (TREK, model 1341B). The measurements are performed at various relative speeds Vb between the sample and the probe, and for various sample rates Fe. A first set of experiments point out that the electric potential displayed by the electrostatic voltmeter depends on the spacing h between the sample and the probe. The diameter D of the spot "seen" by the probe is approximately D ≈ 8h/3. From the second set of experiments performed with the test plate, it can be concluded that the surface potential can be measured with the media in motion, but the accuracy is limited by the spatial resolution defined by k = Vb/Fe.

Dates et versions

hal-04484573 , version 1 (29-02-2024)

Licence

Paternité

Identifiants

Citer

Ali Fatihou, Noureddine Zouzou, Gheorghe Iuga, Lucian Dascalescu. Measurement of the electric potential at the surface of nonuniformly charged polypropylene nonwoven media. Journal of Physics: Conference Series, 2015, 646, pp.012035. ⟨10.1088/1742-6596/646/1/012035⟩. ⟨hal-04484573⟩
8 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More