A laser-aided, direct metal deposition (DMD) fabrication process is used for dies and molds having integrated sensors for monitoring and controlling characteristics that determine the quality of an article being processed. A method of fabricating such devices, as well as the "smart" devices themselves are disclosed. A system of manufacturing articles uses smart dies or smart molds so that various characteristics that affect the quality of the finished article are monitored during the die-forming or injection-molding process. The sensors, which are an integral part of the product-shaping devices, include simple thermocouples for measuring the temperature in various locations, as well as piezoelectric sensors and strain gages to monitor the build-up of stress and strain history caused by fluctuations in temperature during the fabrication process. This information is transmitted to a computer, where it is analyzed or compared with standardized histories obtained either through calibration experiments or through theoretical calculations.

 
Web www.patentalert.com

< Method and apparatus for wavelength switching of a laser source

< Sealing system for a developing cartridge

> Spatially-heterodyned holography

> Scanning optical microscope

~ 00203