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
Methods and apparatus for achieving multiple bit rates in passive optical networks
Information processing device and display control method
Systems and methods for velocity profile based approach to point control
System and method for detecting malicious code executed by virtual machine
Display apparatus
Digital rights management for media streams
Method and apparatus for triggering expiration of a data tag device
  Randomly Featured Patents
Ion mobility spectrometry method and apparatus
Heat transfer systems utilizing a polytrimethylene homo- or copolyether glycol based heat transfer fluid
Optical communications modulator device
Preshaders: optimization of GPU programs
Spring assist knife
Auto-recoverable and auto-certifiable cryptosystem with unescrowed signing keys
Large bale handling apparatus
Adjustable light
Bump with basic metallization and method for manufacturing the basic metallization
Child high chair with an inclination adjustable backrest