Abstract: A method and apparatus for forming a tool. A film is applied to a reference part. A vacuum is applied to cause the film to conform to a surface of the reference part such that an adhesive side of the film faces outward from the reference part and a release side of the film conforms to and contacts the reference part. A plurality of composite plates is adhered to the adhesive side of the film over a plurality of flat portions of the reference part. An adhesive material is applied to fill in a plurality of gaps between the plurality of composite plates. The adhesive material is cured to form the tool.

Abstract: The present disclosure relates to a valve tray for use in a chemical process column. The valve tray includes a plurality of apertures formed therein. A plurality of valves are maintained in a spaced relationship relative to individual apertures of the plurality of apertures. An area of the individual apertures is less than an area of individual valves of the plurality of valves.

Abstract: A method and apparatus for manufacturing a composite part is provided. A composite laminate is formed upon a first tool that provides a first mold line for the composite laminate. A second tool is placed against the composite laminate in which a tooling surface of the second tool is used to create a second mold line for the composite laminate. The second tool is formed from a plurality of prefabricated sections joined by a joining material in which the tooling surface is formed by a layer adhered to the plurality of prefabricated sections and the joining material.

Abstract: A method and apparatus for manufacturing a composite part is provided. A composite laminate is formed upon a first tool that provides a first mold line for the composite laminate. A second tool is placed against the composite laminate in which a tooling surface of the second tool is used to create a second mold line for the composite laminate. The second tool is formed from a plurality of prefabricated sections joined by a joining material in which the tooling surface is formed by a layer adhered to the plurality of prefabricated sections and the joining material.

Abstract: A method and apparatus for forming a tool. A layer is conformed to a reference part. The layer having an adhesive side that faces outward from the reference part and a release side that faces the reference part. A plurality of prefabricated sections is adhered to the layer. A plurality of gaps is filled between the plurality of prefabricated sections with a joining material.

Abstract: A method and apparatus for forming a tool. A film is applied to a reference part. A vacuum is applied to cause the film to conform to a surface of the reference part such that an adhesive side of the film faces outward from the reference part and a release side of the film conforms to and contacts the reference part. A plurality of composite plates is adhered to the adhesive side of the film over a plurality of flat portions of the reference part. An adhesive material is applied to fill in a plurality of gaps between the plurality of composite plates. The adhesive material is cured to form the tool.

Abstract: A static synchronous compensator device connected between a source and a load of a three-phase power system, comprising: a main feedback line configured to provide a main feedback signal from lines between the source and the load; a mixer configured to mix the main feedback signal with a balance function to generate a balanced signal; a signal controller configured to convert the balanced signal to a controlled signal; a gain circuit configured to multiply the controlled signal by ?1 and to perform proportional gain and integral gain (P & I) processing on the controlled signal to generate an intermediate correction signal; and a pulse width modulator configured to apply a pulse width modulation pattern to modulate the voltage source inverter to generate an AC waveform that is applied to the lines between the source and the load.

Abstract: A static synchronous compensator device connected between a source and a load of a three-phase power system, comprising: a main feedback line configured to provide a main feedback signal from lines between the source and the load; a mixer configured to mix the main feedback signal with a balance function to generate a balanced signal; a signal controller configured to convert the balanced signal to a controlled signal; a gain circuit configured to multiply the controlled signal by ?1 and to perform proportional gain and integral gain (P & I) processing on the controlled signal to generate an intermediate correction signal; and a pulse width modulator configured to apply a pulse width modulation pattern to modulate the voltage source inverter to generate an AC waveform that is applied to the lines between the source and the load.