摘要:
An eddy current flaw detection sensor is provided which can detect a circumferential crack occurring at the deformed portion or peripheral portion thereof of a heat transfer tube with a high degree of sensitivity. Two excitation coils 1a, 1b cause eddy current B to flow in the axial direction of a tubular test object 31. A detection coil 2 disposed between the excitation coils 1a, 1b detects bypass eddy current D which flows in the circumferential direction of the test object 31 while bypassing a circumferential crack E. For this purpose, the coil axes of the excitation coils 1a, 1b are directed to the radial direction of the cylindrical protection member 3 and the coil axis of the detection coil 2 is directed to the axial direction of the protection member 3.
摘要:
The touch panel has a light-transmissive upper substrate, a light-transmissive lower substrate, and a bonding layer. The lower surface of the upper substrate is formed thereon with an upper conductive layer. The top surface of the lower substrate is formed thereon with a lower conductive layer facing the upper conductive layer with an air gap. The bonding layer is formed on at least one of inner edges of the lower surface of the upper substrate and the top surface of the lower substrate, and additionally has an open groove communicating with the air gap. The makeup provides a touch panel reliably operable with a simple structure.
摘要:
A motor starts its rotation, and a clutch is operated to drive both of a first driving force transmission system for color printing, including drum gears, and a second driving force transmission system for monochrome printing, including a drum gear. The clutch is disengaged to stop the first system when a first sensor detects a mark on one photosensitive drum of the first system at the same time that a second sensor detects a mark on one drum driving gear of the first system. Next, when a third sensor detects a mark on another photosensitive drum of the second system at the same time that a fourth sensor detects a mark on another drum driving gear of the second system, the clutch is reengaged. Consequently, positionings of all the photosensitive body drums (drum gears) for color printing to the photosensitive drum (drum gear) for monochrome printing are performed without causing positional differences by inertia at the time of stop.
摘要:
Provided are cycloolefin copolymer compositions comprising a hydrocarbon elastomer component substantially free from a polymerizable double bond and a cycloolefin random copolymer component obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms and a cycloolefin in the presence of said hydrocarbon elastomer component, said composition containing said hydrocarbon elastomer component in an amount of 1-50% by weight, and a method for preparing said cycloolefin copolymer compositions.Also provided are cycloolefin copolymer compositions comprising a hydrocarbon elastomer component having a polymerizable double bond and a cycloolefin copolymer component obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms and a cycloolefin in the presence of said hydrocarbon elastomer component, said composition containing said hydrocarbon elastomer component in an amount of 1-50% by weight.Such cycloolefin copolymer compositions as mentioned above are excellent in transparency and mechanical strength and also excellent particularly in impact resistance.In particular, when a cycloolefin elastomer obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms, a cycloolefin and a non-conjugated diene of 5-20 carbon atoms is used as the above-mentioned hydrocarbon elastomer component having a polymerizable double bond, the resulting copolymer compositions are excellent particularly in transparency.
摘要:
The present invention provides an eddy current testing method and an eddy current testing apparatus that can reduce detection noise to increase the SN ratio thus improving the defect detection accuracy.An eddy current testing sensor includes a pair of excitation coils and a detection coil disposed therebetween. For example, a voltage regulator applies voltages having different amplitudes to the pair of excitation coils so as to reduce detection noise caused by a deformed portion of a heat exchanger tube and a tube plate in a detection signal of the detection coil. Alternatively, for example, an eddy current testing detector applies a first excitation frequency f1, at which tube material noise is reduced to negligible an amplitude, and a second excitation frequency f2, which is higher than the first excitation frequency f1, to the eddy current testing sensor. The phase and gain of a measurement waveform with the second excitation frequency f2 are adjusted and then a differential waveform of the first and second excitation frequencies f1 and f2 is obtained based on an induction voltage detected by the detection coil so as to cancel out tube expansion noise.
摘要:
A touch panel includes a first substrate, a first resistance layer on a surface of the first substrate, a second substrate, a second resistance layer on a surface of the second substrate, a spacer having substantially a frame shape provided between outer peripheries of the first and second substrates, a sheet having a surface attached to the surface of the second substrate with a first adhesive layer, and a second adhesive layer on the surface of the sheet. The second resistance layer faces the first resistance layer by a predetermined gap between the second and first resistance layers. The second adhesive layer has an adhesion property weaker than that of the first adhesive layer. This touch panel can be attached onto a display element again easily.
摘要:
A lighting apparatus is configured by disposing an EL element inside a stationary housing including, about its top side, an operating part including a plurality of arranged push buttons as well as inside a movable housing openably mounted to the stationary housing and having a display part at its surface, and connecting a control circuit to the EL elements, the operating part and the display part. The control circuit controls light emission of the respective EL elements of the stationary housing and the movable housing to illuminate the operating part and the display part, so that the lighting apparatus simple in structure is capable of various illuminations.
摘要:
An elecroluminescence (EL) element emits light from its both surfaces. The EL element is formed by printing front electrode layer, luminescent layer made of high dielectric resin with luminous powder dispersed therein, and rear electrode layer made of light-transmittable resin with conductive powder dispersed therein on at least one of surfaces of insulating film.
摘要:
The exhaust gas component measuring apparatus measures the components of the exhaust gas of a vehicle V while driving the vehicle V in a given driving mode. The apparatus includes driving mode setting means 14 for setting the driving mode of the vehicle V, environment setting means 7, 8 for automatically setting the environment of the vehicle V in accordance with the driving mode set by the driving mode setting means 14, a driving device 3 for automatically driving the vehicle V in such a manner that the vehicle V can be driven in the driving mode set, and measuring devices 11, 13, and 15 respectively for automatically measuring the components of the exhaust gas of the vehicle V as the vehicle V is automatically driven.
摘要:
There is provided a process for the production of a cycloolefin copolymer which comprises copolymerizing an .alpha.-olefin having 2 or more carbon atoms and a specific cycloolefin in the presence of a specific metallocene type catalyst in a solvent mixture of a hydrocarbon solvent having a solubility parameter (value of .delta.) of 7.7 [(cal/cm.sup.3).sup.1/2 ] or more and a hydrocarbon solvent having a solubility parameter (value of .delta.) of 7.5 [(cal/cm.sup.3).sup.1/2 ] or less as a polymerization solvent. A cycloolefin copolymer having a high molecular weight can be produced in a high concentration by this process at a high yield.