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
Circuit arrangement having a load transistor and a voltage limiting circuit and method for driving a load transistor
Method and apparatus for policy-based network access control with arbitrary network access control frameworks
Compound semiconductor epitaxial structure and method for fabricating the same
Authoring method, authoring device and program
Light barrier and method for detecting objects
Washing machine
Method or system for investing and/or trading
  Randomly Featured Patents
Transparent resin film, its manufacturing method, electronic display, liquid crystal display, organic EL display, and touch panel
Maize variety hybrid X8H569
Rotary switch
Sensor apparatus, methods and computer program products employing vibrational shape control
Method for controlling the velocity of sheet separation
Object-oriented graphic system with extensible damage repair and drawing constraints
Process for improving the quality of PPE-containing moulding materials
Manual keyhole plasma arc welding system
Metal crib structure for a rocking chair seating plane
Rotary generator