Resources Contact Us Home
Ultraviolet-based, large-area scanning system for photothermal processing of composite structures

Image Number 2 for United States Patent #6149856.

In making thermoset and photo-set polymer-matrix composite parts, curing is the key process step that transforms the molecular structure of the composite material, stabilizing it in the desired shape. This curing system applies carefully controlled ultraviolet (UV) radiation dosages, appropriately distributed over the entire surface of the composite part, thereby rapidly curing the material while enabling direct monitoring and control of the curing energy. Previous photo-curing methods have applied generalized radiation to a part with conventional UV lamps. We provide great benefits in cure depth, speed and process control by precisely controlling all parameters of UV dosage, by computed control, by markings on the part, or by dynamic feedback control from embedded sensors or non-contact sensors. This system can apply greater radiation dose to areas of increased quantities of resin, such as support ribs, and lesser radiation dose to areas of decreased quantities of resin. This method can be enhanced by using differing resins which respond to differing wavelengths, and also by controlled changes of radiation field size or duration. This curing system also enables temporary joining of parts by sufficient partial or controlled-area photo-setting, which may also be integrated with lay-up or winding operations. As a result, these partially cured parts can be handled safely through later stages of the manufacturing process, such as final photo-setting or baking operation in an oven or autoclave.

  Recently Added Patents
Method and apparatus for disease diagnosis and screening using extremely low frequency electromagnetic fields
Neurostimulation system
Automated tuning in a virtual machine computing environment
Veronica plant named `Amethyst Plume`
Dynamic bar oriented user interface
Power transmission control device for vehicle
Processor engine, integrated circuit and method therefor
  Randomly Featured Patents
Method and apparatus for uplink and downlink channel alignments for 3GPP continuous packet data connection (CPC) channels
Data processing device having a plurality of state-machine parts
Continuous naphtha treatment method
Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel
Temperature compensation circuit
Portable storage device and table
Laser warning sensor with frequency-coded position information
Photographic material with imidazole cyan coupler
Method of securing a rock bolt
AC driven laser diode array, power supply, transformer, and method therefor