摘要:
In a hydrogen gas detection device, light emitted from a light source is irradiated onto a hydrogen sensor whose reflectance (optical reflectance) varies upon contact with hydrogen gas, and the light transmitted through the hydrogen sensor or reflected by a reflective film of the hydrogen sensor is received by an optical sensor. On the basis of the signal output from the optical sensor and indicative of the amount of light received, the hydrogen gas detection device detects leakage of hydrogen gas.
摘要:
A working object cutting method capable of cutting a working object precisely is provided. The working object cutting method comprises irradiating a working object 1 with a laser beam while locating a converging point at the working object, so as to form a reformed region in the working object 1 along a reformed-region forming line 15 set at a predetermined distance inside from an outer edge E of the working object 1 along the outer edge, forming a cutting reformed region in the working object 1 along a cutting-scheduled line 5, and cutting the working object 1 along the cutting-scheduled line 5 from a cutting reformed region acting as a start point. Thus forming the working object 1 with the reformed region along the reformed-region forming line 15 set at a predetermined distance inside from the outer edge E of the working object 1 allows the formed reformed region or fissures extending therefrom to inhibit fissures generated in an outer edge portion 25 of the working object 1 from extending to the inside even if a cutting stress is applied to the working object 1 when cutting the working object 1.
摘要:
A hydrogen sensor includes a thin film layer formed over a substrate of resin or the like, and a catalyst layer formed on a surface of the thin film layer. When contacted by leaked hydrogen gas, the catalyst layer quickly hydrogenates the thin film layer through its catalytic action, thereby causing a change in optical reflectance of the thin film layer. The hydrogen sensor includes a protective film formed at least either between the substrate and the thin film layer or on a surface of the catalyst layer.
摘要:
A drive apparatus for a vehicle, which supplies more electric power to a motor which supplements the drive power of an engine and collects energy from an exhaust to be able to improve fuel consumption and reduce the total amount of the exhaust, is realized by comprising an engine coupled to a drive wheel to generate drive power for the vehicle, a generator motor coupled to an output shaft of the engine and the drive wheel, a battery, a power control unit, and a power generation unit which generates electric power using an exhaust of the engine, and selects a charge mode when the vehicle is braked and when an engine output is equal to or greater than an output needed to drive the vehicle, wherein the electric power generated by the generator is stored in the battery, and energy is collected from the exhaust using the power generation unit.
摘要:
A light-control membrane (11) is joined to a first surface (10a) of an electrolyte membrane (10), and hydrogen gas is supplied to a second surface (10b) side of the electrolyte membrane (10). If the electrolyte membrane (10) has a defect (10c), such as a crack or a pinhole, the hydrogen gas leaks through the defect (10c) to the first surface (10a) of the electrolyte membrane (10). In result, the light-membrane (11) is hydrogenated by the leaked hydrogen gas, and the reflectance of the light-control membrane (11) is locally changed. This makes it possible to visually spot the presence of the defect (10c).
摘要:
A hydrogen gas visualization device comprises a hydrogen sensor having a thin film layer formed on the surface of a substrate and a catalyst layer formed on the surface of the thin film layer which, when contacted by hydrogen gas contained in an atmosphere, hydrogenates the thin film layer and thereby changes the optical reflectance of the thin film layer, and one or more sensor faces provided with the hydrogen sensor. The hydrogen gas visualization device visualizes, on the sensor faces, the distribution of hydrogen gas contained in the atmosphere contacting the hydrogen sensor and thereby visualizes the existence and flow of the hydrogen gas.
摘要:
A laser beam machining method and a laser beam machining device capable of cutting a work without producing a fusing and a cracking out of a predetermined cutting line on the surface of the work, wherein a pulse laser beam is radiated on the predetermined cut line on the surface of the work under the conditions causing a multiple photon absorption and with a condensed point aligned to the inside of the work, and a modified area is formed inside the work along the predetermined determined cut line by moving the condensed point along the predetermined cut line, whereby the work can be cut with a rather small force by cracking the work along the predetermined cut line starting from the modified area and, because the pulse laser beam radiated is not almost absorbed onto the surface of the work, the surface is not fused even if the modified area is formed.
摘要:
A laser beam machining method and a laser beam machining device capable of cutting a work without producing a fusing and a cracking out of a predetermined cutting line on the surface of the work, wherein a pulse laser beam is radiated on the predetermined cut line on the surface of the work under the conditions causing a multiple photon absorption and with a condensed point aligned to the inside of the work, and a modified area is formed inside the work along the predetermined determined cut line by moving the condensed point along the predetermined cut line, whereby the work can be cut with a rather small force by cracking the work along the predetermined cut line starting from the modified area and, because the pulse laser beam radiated is not almost absorbed onto the surface of the work, the surface is not fused even if the modified area is formed.
摘要:
A laser processing apparatus which can correct the fluctuation in laser light emitting direction among laser heads is provided.In the laser processing apparatus 1, a laser head 13 is held and cooled by a cooling jacket 11, and thus can be operated stably. Also, even if the emitting direction of laser light L fluctuates when replacing the laser head 13 because of its damage or the like, a regulator 15 can adjusts the position and inclination of the cooling jacket 11 with respect to an optical system main part 4, so that the emitting direction of the laser light L can coincide with the optical axis of the optical system main part 4. Thus, the laser processing apparatus 1 can easily correct the fluctuation in the laser light emitting direction among the laser heads 13.
摘要:
A laser beam machining method and a laser beam machining device capable of cutting a work without producing a fusing and a cracking out of a predetermined cutting line on the surface of the work, wherein a pulse laser beam is radiated on the predetermined cut line on the surface of the work under the conditions causing a multiple photon absorption and with a condensed point aligned to the inside of the work, and a modified area is formed inside the work along the predetermined determined cut line by moving the condensed point along the predetermined cut line, whereby the work can be cut with a rather small force by cracking the work along the predetermined cut line starting from the modified area and, because the pulse laser beam radiated is not almost absorbed onto the surface of the work, the surface is not fused even if the modified area is formed.