Abstract: A method of fault event identification which comprises the steps of receiving a plurality of parameter measurements, performing single fault isolation to establish one of the plurality of parameter measurements as an event start, one of the plurality of parameter measurements as an event detect, and one of the parameter measurements as an event end wherein a latency period extends from the event start to the event detect and a blackout period extends from the event start to the event end, performing multiple fault isolation to establish a first trend line for the plurality of parameter measurements prior to the blackout period and after the blackout period, reprocessing the parameter measurements in the latency period, processing the parameter measurements in the blackout period, calculating a model IC from the reprocessed parameter measurements, calculating a plurality of single fault vectors, calculating an estimate for each of the single fault vectors, calculating a normalized error for each of said plural

Abstract: A method for investment casting includes the steps of positioning a base plate relative to a die; molding a first material between the die and at least a first surface portion of the base plate; securing one or more patterns to the base plate, the one or more patterns comprising a second material; applying one or more coating layers over at least portions of the one or more patterns and at least a portion of the first material; substantially removing the first material through an interior receptacle of a manifold body and the second material through an exterior receptacle of the manifold body to leave one or more shells formed by the coating layers; removing said base plate; introducing molten metal to the one or more shells through the interior receptacle of the manifold body; permitting the molten metal to solidify; and destructively removing one or more investment casting molds.

Abstract: A plate assembly has a plate member (1, 21, 101) having a recessed portion (3, 23, 103), and a lid member (2, 22, 102) mounted on the plate member to cover the recessed portion. A gap is formed between the plate member and the lid member around the recessed portion so as to allow a liquid to permeate the gap due to capillarity while preventing the liquid from entering the recessed portion. If the liquid is an adhesive, the lid member (2, 22) is bonded to the plate member (1, 21), the plate member having a bonded surface (4, 26) which is formed so as to surround the recessed portion (3, 23), the plate member having an adhesive relief portion (25) which is formed around the bonded surface so as to be recessed from the bonded surface, the gap being formed between the bonded surface and the lid member so as to allow the adhesive to permeate the gap due to capillarity.

Abstract: An optical module capable of preventing the efficiency of optical coupling from deteriorating even if temperature varies. The optical module 1 has a holder 2 and an aspherical lens 11, which are formed of a plastic so as to be integrated with each other. The holder 2 has a cylindrical portion 8 which engages a photoelectric transfer element package 3. The photoelectric transfer element package 3 has a flange portion 15 which butts the open end face 16 of the cylindrical portion 8. The flange portion 15 is bonded to the open end face 16 of the cylindrical portion 16, and a gap is formed between the outer peripheral surface 18 of the cap 12 of the photoelectric transfer element package 3 and the inner peripheral surface of the cylindrical portion 8.

Abstract: A machine tool (1, 1?), in particular a drilling and milling machine, comprising a housing (20) having a machine bed (2), together with side walls (3, 4) and doors (5, 6, 7), comprising a fixed, pivotable or rotatable work table (8, 9), and comprising a slide (10), transportable in the y direction, for the reception of a spindle head (11), transportable in the x-z direction, for the reception of tools (12), wherein the front door (5), for the enlargement of the working and loading area (21) in the upward direction, is of transomless configuration, the roof region (13) of the machine (1, 1?) has an automatically operable cover (16), the rear region (22) of the machine (1, 1?) has an integrable automatic pallet changer (14), and the machine (1, 1?) is assigned an automatic tool changer (15).

Abstract: A turbine engine nozzle assembly has an upstream flap and a downstream flap pivotally coupled thereto for relative rotation about a hinge axis. An actuator linkage is coupled to the downstream flap along a forward portion thereof for actuating the upstream flaps and downstream flaps between a number of throat area conditions while permitting mode changes.

Abstract: Method and apparatus for heating plastic by laser beams with the aid of a number of laser points on the focal plane, the laser points being produced by an optical arrangement with the aid of a multiple wedge plate. The arrangement can be integrated in a processing head.

Abstract: A computational efficient algorithm for compression analysis of free-hand static elasticity imaging performed using medical diagnostic ultrasound imaging equipment offers tissue compression quality and quantity feedback to the operator. The algorithm includes a criterion for automatic selection of the most advantageous pre- and post-compression frame pairs delivering elasticity images of optimal dynamic ranges (DR) and signal-to-noise ratios (SNR). The use of the algorithm in real time eases operator training and reduces significantly the amount of artifact in the elasticity images while lowering the computational burden.

Abstract: There are provided a thin wire grid polarizer having a high transmittance, a high quenching ratio and a high degree of polarization, and a method for producing the same at low costs. A fluoridated polyimide thin film 12, a hydrophilic thin film 13 and a hydrophobic thin film 14 are sequentially stacked on a glass substrate 11 to be pressed by a die 1 from the side of the hydrophobic thin film 14 to transfer the fine pattern of groove forming protrusions 3 of the die 1 to the hydrophobic thin film 14 and hydrophilic thin film 13 by the nano-imprinted lithography technique, and then, metal fine wires are caused to grow by plating.

Abstract: There is provided a method for producing a reliable metal/ceramic bonding substrate at low costs by forming a desired fillet on the peripheral portion of a metal circuit by a small number of steps. After an active metal containing brazing filler metal 12 is applied on a ceramic substrate 10 to bond a metal member 14 thereto, a resist 16 is applied on a predetermined portion of a surface of the metal member 14 to etch unnecessary portions, and then the resist is removed. Thereafter, unnecessary part of a metal layer 12b, which is formed of a metal other than an active metal of the active metal containing brazing filler metal 12, is etched with a chemical to be removed. Then, unnecessary part of an active metal layer 12a, which is formed of the active metal and a compound thereof, is selectively etched with a chemical, which inhibits the metal member 14 and the metal layer 12b from being etched and which selectively etch the active metal layer 12b, to form a metal circuit on the ceramic substrate 10.

Abstract: Pre-molding of wax or similar sacrificial material over one or more cores facilitates a subsequent molding over a core assembly. Individual cores or groups thereof may be pre-molded in a wax body. One or more such wax bodies may be assembled with other bodies and/or other cores to facilitate a main wax molding of such assembly.

Abstract: Physical vapor deposition is utilized to deposit repair material on Ti alloy turbine components.

Abstract: A compressor assembly, including a compressor, at least one pipe having ends and an intermediate portion between the ends, the at least one pipe being connected to the compressor at the ends, and at least one support member for supporting the intermediate portion of the at least one pipe relative to the compressor.

Abstract: An improved engine construction, such as a rocket engine construction is provided. The engine construction comprises a combustion chamber, a smooth wall nozzle, and a transition zone between the chamber and the smooth wall nozzle. The transition zone has a coolant system which includes a manifold formed from a non-copper material through which a coolant flows. In a high heat transfer embodiment, the transition zone includes an additional manifold formed from a copper based material.

Abstract: A method for constant-current generation by means of a rotational energy source, a generator and a control circuit connected to the generator. Mechanical rotational energy is generated by the energy source and the mechanical rotational energy is transmitted to the generator rotor. The magnetic field distribution produced in the generator is controlled by the control circuit that controls the current distribution in the generator between load current and generator current by feedback control by generating an opposing magnetic field. The power uptake and the current output are adapted without losses and the alternating current generated by the generator is transferred to an averaging direct-current circuit. A suitable device for carrying out the method is also provided.

Abstract: The invention relates to a stacking column for storing goods on top of each other or next to each other on pawls (1) which rotate about a rotational axis (2) from an idle position into a working position. The respective successive pawls (1) are mutually coupled by means of at least one link plate (9). In order to reduce the gap or pitch (T) between adjacent pawls (1), the at least one link plate (9) is angular, elbowed or arc-shaped.

Abstract: A method for joining workpieces made from plastic, the upper workpiece, facing a laser source, consisting of a material transparent to the laser beam, and the lower workpiece consisting of a material absorbent to the laser beam, such that the mutually bordering contact surfaces for the two workpieces melt and are joined to one another under pressure during a subsequent cooling, the guiding of the laser beam onto the site to be joined, and the mechanical compression of the workpieces being carried out simultaneously by a machining head. The corresponding device comprises a machining head with focussing devices for the laser beam onto the contact surface, and pressure-exerting devices for compressing the workpieces. A rotatably mounted glass ball or roller is particularly suitable as pressure-exerting device. The invention permits welding quality to be assured in conjunction with flexibility of the welding operation without expensive and complicated damping balls.

Abstract: A control circuit 6 of a resonance type switching power source comprises a drive circuit 21 for supplying drive pulses to each gate terminal of first and second MOS-FETs 2,3; a PWM circuit 9 for causing drive circuit 21 to produce drive pulses; an input voltage detector 7 for detecting input voltage from DC power source 1 and comparing the input voltage and input reference voltage Vref1; and a frequency adjuster 8 for adjusting oscillation frequency of PWM circuit 9 in response to output level from the input voltage detector 7. With adjustment in oscillation frequency of PWM circuit 9 in response to input voltage Vin from DC power source 1, control circuit 6 can modify on-off timing of first and second MOS-FETs 2, 3 to keep good resonating action and prevent off-resonance although DC power source 1 produces fluctuating input voltages.

Abstract: A wax or similar material may be molded to a base plate of an investment casting shelling fixture. The molding may provide for enhanced positioning of wax patterns or may provide a precise surface shape for the shell.