Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Light modulators and optical apparatuses including the same
Semiconductor device
Ejection station
High productivity single pass scanning system
Toner cartridge
Strap-hook ring
Data processing apparatus, activation control method, and computer-readable storage medium
  Randomly Featured Patents
Heat exchanger suitable for vehicles
Electronic device processing equipment having contact gasket between chamber parts
Mounting apparatus for power supply
Compound or its tautomer, metal complex compound, colored photosensitive curing composition, color filter, and production
Jug
Clock and data recovery circuit
Positive side support test assembly
Transportable intravenous bag stand
Method and apparatus for performing packet loss or frame erasure concealment
Bone regeneration materials based on combinations of monetite and other bioactive calcium and silicon compounds