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.
Dynamic compressive experiments for Expanded Polystyrene Sphere (EPS) foam materials have been carried out by using the Split Hopkinson Pressure Bar (SHPB) within the range of the mid-high strain rates from 320 s−1 to 1380 s−1. The wave separation technique used in the tests has been adopted to effectively enlarge the measurement range of stress-strain curve. Thereout, the integrated stress-strain...
The transient overvoltage will be produced inside GIS (Gas Insulated Switchgear) when disconnector switches operate because the speed of disconnector is very slow and it does not have the arc extinction ability. The VFTO will lead to the electromagnetic interference for the smart devices in substation which will damage these devices. A transient electric field detection system is established in this...
In order to ensure the safe operation of the gas insulated switchgear (GIS), on-site impulse withstand voltage test is becoming more and more important. Oscillating impulse voltage (OIV) is very suitable for the test due to its high efficiency. By detecting the partial discharge (PD) when conducting on-site impulse withstand voltage test, the insulation state of GIS can be known overall. The pulse...
Gas insulated switchgear (GIS) is the most important equipment in grid. It has been widely used in power system for the merits of small size and high reliability. Especially for the city substation, GIS is the preferred power equipment. GIS has the compact structure and it is difficult to repair once there are defects inside the GIS. It is the important step to monitor the defects inside GIS. PD is...
The quasi-static compressive and quasi-static splitting experiments have been carried out to investigate the mechanical behavior of EPS concrete with different size and containing of EPS beads. The quasi-static compressive stress-strain curves of EPS concrete show:the compressive strength of EPS concrete is seen to decrease significantly with a increase in EPS bead containing,the EPS concrete with...
In order to investigate the splitting strength of EPS concrete with different size and containing of EPS beads, the Brazilian disc specimens were subjected to diametral impact with different projectile speeds by using the split Hopkinson pressure bar (SHPB) of 74 mm in diameter. the validity of dynamic split tension tests has been confirmed by accurate design padding block among incident bar, specimen,...
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.