Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10673636 | CIRP Annals - Manufacturing Technology | 2008 | 5 Pages |
Abstract
On-line monitoring of polymer melt state is critical to ensuring part quality in injection molding. This paper presents a novel, dual-parameter sensing method for simultaneous measurement of pressure and temperature variations within the mold cavity through a modulator circuit. Pressure variation during the molding cycle, which is proportional to the electrical charge output of a piezoceramic stack, is discretized into acoustic pulses that are subsequently frequency-modulated by a temperature-sensitive oscillator (TSO). The ability to measure two parameters using one sensor package without batteries and cables for data transmission provides a new platform for monitoring injection molding processes.
Related Topics
Physical Sciences and Engineering
Engineering
Industrial and Manufacturing Engineering
Authors
Robert X. Gao, Zhaoyan Fan, David O. Kazmer,