Abstract:
PURPOSE: An electrical energy generator and an electrical energy storage apparatus including the same are provided to uniformly supply pressure to a plurality of nano piezoelectric devices using a carbon nano tube sheet, thereby preventing damage to the nano piezoelectric device due to excessive pressure. CONSTITUTION: A nano piezoelectric device(40) is formed on a first electrode(30). The nano piezoelectric device generates electricity using a piezoelectric effect. A second electrode is formed on the upper part of the nano piezoelectric device. A carbon nano tube sheet(50) is formed between the second electrode and the nano piezoelectric device. The carbon nano tube sheet is fixed on an upper substrate(60).
Abstract:
The present invention relates to a device for testing resist pressure of a vessel wherein gas is stored at a high compressed state, before the use of the vessel, and to a method for testing resist pressure of a vessel by using the testing device. The device includes: the vessel provided as an object to which a resist pressure test is carried out; an elastic tube placed in the interior of the vessel and adapted to fill a liquid into the interior thereof; a pressurizing means adapted to apply a predetermined pressure to the elastic tube to allow the elastic tube to be expanded; and a pressure gauge adapted to gauge the pressure in the interior of the vessel, wherein a gas is filled into the vessel to apply a predetermined pressure to the interior of the vessel by the expansion of the elastic tube.
Abstract:
According to one embodiment of the present invention, a non-destructive inspection device for pressure containers using leakage-flux measurement comprises: a coil winding mount which is provided on one side on the outside of a pressure container and magnetises the pressure container; a sensor support which is provided on the other side on the outside of the pressure container, and on which are disposed a plurality of magnetic-field sensing sensors; a yoke which magnetises the pressure container and generates a magnetic flux in a direction perpendicular to the direction of the magnetic flux generated by the coil winding mount; and an endoscope to which one or more magnetic-field sensing sensor(s) is (are) attached.
Abstract:
The present invention relates to an improvement in the performance of one or more surface contact-type probes. More particularly, the present invention relates to a probe apparatus for measuring constant-pressure electric resistance (Korean Patent Registration No. 10-0981677 and PCT patent application No. KR2009-006449) which is developed to solve the problem of non-equivalency in the contact between a plurality of electric resistance measuring cores arranged in parallel with each other and the surface of a sample. A voltage-applying system is adopted and a lead wire penetrates through a pneumatic reservoir in a vertical direction to utilize the probe apparatus for measuring constant-pressure electric resistance, improve the performance of the apparatus, and simplify the structure of the apparatus.
Abstract:
Disclosed is a linear hydrogen-material-containing ampoule test piece. The linear hydrogen-material-containing ampoule test piece comprises: a feeding part through which hydrogen gas is injected; an ampoule body which has a hollow space on the inside, and on one end of which is formed a holding part that is assembled together with the feeding part and on the other end of which is formed a securing part with a predetermined gap from the holding part; a plurality of thin metal wires which are inserted into the hollow space, and on one end of which is formed a latching tube such that they are secured on the inside of the holding part and on the other end of which is formed a latching part that widens such that they are secured on the inside of the securing part; and a stopper part which is assembled onto the securing part and seals in the injected hydrogen gas. The present invention allows measurement of hydrogen damage in situ in the same way as with an interdisciplinary environmental mechanical testing system in which mechanical testing is carried out in an autoclave, and, in particular, the tensile deformation behaviour of the thin metal wires can be analysed by eliminating just the apparent tensile properties of the linear hydrogen-material-containing ampoule test piece from the tensile results for the linear hydrogen-material-containing ampoule test piece and the thin metal wires mounted in the device.