摘要:
With a method for the contactless determination of a thickness of a layer (20) made of electrically-conductive material of a component (17), a sensor composed of a coil form (13) and a coil (14) is positioned in the vicinity of the component (17) to be measured. The method is based on a combination of the principles of induction and eddy current. The thickness of the layer (20) is determined using a plurality of measuring and evaluation steps in which the coil (14) is acted upon with a first alternating current frequency f1 and a second alternating current frequency f2, and its change in inductance is evaluated. The distance between the coil form (13) and, therefore, the coil (14), and the component (17) is derived from the inductance value of the coil (14) acted upon with the second alternating current frequency f2.
摘要:
A lithium secondary cell array in a cylindrical design has a winding mandrel and a winding packet, which contains foil-like coated strips and contacting strips that form the electric cell structure consisting of anode, cathode and separator. The cell array has outer electrical connections which include pole caps. The winding mandrel includes an insulating material and has a through-channel extending in the longitudinal axis direction. The winding mandrel is connected to an inner pole cap at each end, the pole caps likewise having a respective through-channel. One outer pole cap having a through-passage is respectively provided, which surrounds the winding packet circumferentially at least in the edge region, wherein several radially arranged force-fit connections, each acting between the outer and the inner pole cap, are used to fix the winding packet and achieve the electrical contacting between the contacting strips and the outer pole cap.
摘要:
The invention relates to a composite material having two or more superimposed wood layers. Said layers are joined together by means of a one component polyurethane adhesive containing a prepolymer having free NCO groups and a wood having a volume fraction of libriform fibres in the region of between 50-70% is used.
摘要:
A particle beam microscope comprises a magnetic lens 3 having an optical axis 53 and a pole piece 21. An object 5 to be examined is mounted at a point of intersection 51 between an optical axis 53 and the object plane 19. First and second X-ray detectors 33 have first and second radiation-sensitive substrates 35 arranged such that a first elevation angle β1 between a first straight line 551 extending through the point of intersection 51 and a center of the first substrate 351 and the object plane 19 differs from a second elevation angle β2 between a second straight line 552 extending through the point of intersection 51 and a center of the second substrate 352 and the object plane 19 by more than 14°.
摘要:
The invention relates to the use of a composite material having two or more superimposed layers of wood as a support element in structural engineering, nautical, vehicle and aircraft constructions, energy production systems, mining or in the production of furniture. The wood layers are joined together by means of a one component polyurethane adhesive containing a prepolymer with free NCO groups and the wood has a structure having a volume fraction of libriform fibres of between 50%-70%.
摘要:
A method and a device for introducing solder onto a solar cell is provided. The method and device employ a solder wire introduced in the molten state onto the solar cell under the action of ultrasonic vibrations applied by a sonotrode. Solder is introduced very precisely onto the solar cell, without subjecting the solar cell to undesirably high temperatures, by introducing the solder wire into a gap running between a heating device and the sonotrode, which applies ultrasonic vibrations and melts and flows through the gap onto the solar cell.
摘要:
A node (120) for communication within a communication system (100), wherein the node (120) comprises a network signaling stack (122), the node (120) is adapted for serving as a first radio access platform which supports incoming packet switched connections, the node (120) is adapted for interconnecting to a second radio access platform which supports outgoing packet switched connections, and the node (120) is adapted for commissioning of an incoming packet switched connection.