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- W61013083 abstract "Experts in injection molding often refer to previous solutions to find a mold designsimilar to the current mold and use previous successful molding process parameterswith intuitive adjustment and modification as a start for the new molding application.This approach saves a substantial amount of time and cost in experimental basedcorrective actions which are required in order to reach optimum molding conditions.A Case-Based Reasoning (CBR) System can perform the same task by retrieving asimilar case which is applied to the new case from the case library and uses themodification rules to adapt a solution to the new case. Therefore, a CBR System cansimulate human e~pertise in injection molding process design.This research is aimed at developing an interactive Hybrid Expert System toreduce expert dependency needed on the production floor. The Hybrid ExpertSystem (HES) is comprised of CBR, flow analysis, post-processor and troubleshooting systems. The HES can provide the first set of operating parameters in orderto achieve moldability condition and producing moldings free of stress cracks andwarpage. In this work C++ programming language is used to implement the expertsystem.The Case-Based Reasoning sub-system is constructed to derive the optimummagnitude of process parameters in the cavity. Toward this end the Flow Analysissub-system is employed to calculate the pressure drop and temperature difference inthe feed system to determine the required magnitude of parameters at the nozzle. ThePost-Processor is implemented to convert the molding parameters to machine settingparameters. The parameters designed by HES are implemented using the injectionmolding machine. In the presence of any molding defect, a trouble shooting subsystemcan determine which combination of process parameters must be changediiiduring the process to deal with possible variations. Constraints in relation to theapplication of this HES are as follows.- flow length (L) constraint: 40 mm < L < I 00 mm,- flow thickness (Th) constraint:-flow type:- material types:I mm < Th < 4 mm,unidirectional flow,High Impact Polystyrene (HIPS) and Acrylic.In order to test the HES, experiments were conducted and satisfactory resultswere obtained." @default.
- W61013083 created "2016-06-24" @default.
- W61013083 creator A5075915261 @default.
- W61013083 date "1997-01-01" @default.
- W61013083 modified "2023-09-24" @default.
- W61013083 title "Developing a hybrid expert system program to aid in the design of plastic injection molding process" @default.
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- W61013083 hasPublicationYear "1997" @default.
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