Paper number 296
|DEVELOPMENT AND VERIFICATION OF A THERMAL MODEL FOR A NOVEL AUTOMATED COMPOSITE FABRICATION PROCESS: LAMINATED OBJECT MANUFACTURING (LOM)|
Don Klosterman1, Lawrence Flach2, Eric Bryant1, Richard Chartoff1
1University of Dayton , Rapid Prototype Development Laboratory,
300 College Park, Dayton, Ohio, 45469-0131, USA
2University of Dayton , Department of Chemical and Materials Engineering,
300 College Park, Dayton, Ohio, 45469-0246, USA
|Summary||The initial framework for a thermal model of the Curved-layer Laminated Object Manufacturing (Curved LOM) process was developed. Curved LOM is a automated process involving layer-by-layer lamination and cutting of sheet materials using a conformable heating membrane and CO2 laser, respectively. The process is used for fabrication of flat or curved panels made from fiber composites, ceramics, or other advanced materials. A thermal model was developed in order to predict temperature profiles throughout the panel during LOM processing. To verify the model, a 20-layer ceramic panel was built with thermocouples embedded every fourth layer to record temperature during the process. By adjusting one of the model parameters (heat transfer coefficient of laminator to panel top surface), the model accurately predicted the observed response. Further model refinements and additional capabilities will be pursued.
||Keywords|| process modeling, near-net shape manufacturing, prototyping, ceramic materials/composites, integrated design and manufacturing, emerging manufacturing technologies.
Theme : Processing, Integrated Design and Manufacturing ; Processing
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