The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The consequences of macromolecular mobility on the space charge behavior of a series of poly-(ethylene terephtalate) samples with controlled crystallinity ranging from 3 to 42% were studied. Space charge measurements were performed by Pulsed Electro Acoustic (PEA) technique. Relaxation processes were probed by dielectric spectroscopy. Space charge and conduction mechanisms were observed to strongly...
Space charge measurements based on the Pulsed Electro-Acoustic (PEA) method were performed on a XLPE based mini-cable at low applied DC voltages and under isothermal temperature (60°C). This work was to study the transient of the space charge accumulation due to the field dependent conductivity of the cable insulation. Considering the small charge quantity of charge accumulated and the resulting difficulties...
The evolution of the space charge distribution in polypropylene including non-uniform distribution of talc fillers is studied. In the process of fabrication, a lack of fillers is clearly localized in the middle of the material which introduces a macroscopic heterogeneity. Under voltage, it acts as a macroscopic trap that imposes an alternating charge buildup, leading therefore to a limited electric...
Measuring space charge seems relatively simple, but the complexity of the sample structure and interfacial conditions may result in biased analysis. In this abstract, some clues are given to test which factor are important to check before analyzing measurements.
The paper describes the design and implementation of a .NET windows service based agent which functions autonomously and automatically collects data for subsequent analysis and graphical presentation of spreadsheet data. The approach used to develop the automation aspects of the agent implementation is also presented, together with features of the graphical tool developed using this approach.
In this paper a simple numerical signal analysis applicable to PWP and PEA methods is presented in order to directly extract the space charge distribution from measurements.
Electrical insulation involves more and more complex structures in which the electrical field or the material can be heterogeneous. For testing space charge buildup in such structures, one-dimensional measurements are still often used owing to their simplicity. The sample complexity may however induce spurious effects that can be confused with space charge. In this paper, from the underlying physics...
The non-destructive electrical characterization of semiconducting structures mainly relies on indirect techniques. Charge information are then obtained by using an electrical model and only well modelled semiconductor materials can be accurately studied. The PWP method has already been shown to deliver measurable signals in the case of semiconducting structures. In this paper an analytical model of...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.