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
Process for production and use of carbonitride mixture particles or oxycarbonitride mixture particles
Network switch and method for asserting flow control of frames transmitted to the network switch
Memory controller and control method
Establishing a secure memory path in a unitary memory architecture
System and method for utilizing excess printing capability
Subframe staggering for relay communication
Vehicle front fascia
  Randomly Featured Patents
Virtual sensor for window position
Collapsible dispensing tube
Ball-and-socket joint
RTD assembly, and temperature sensing system and excitation control system employing an RTD assembly
Method and system for implementing an improved universal packet switching capability in a data switch
Synthesis device for orthopaedia and traumatology
Methods and apparatus for creating an aspheric optical element and the aspheric optical elements formed thereby
Method and assembly for assessing relative degradation resistance of materials with laser
Display system
Anti-glare fitment