The article deals with the issue of evaluating performance a composite metal-metal-polymer mold. use mold, including forming plate consisting metal, and metal polymer introduced low cooling efficiency such For this reason, it is important to develop technological solutions that ensure efficient operation system. provides mathematical calculations required amount heat flow when molding thermopla...

The mold design/manufacturing plays a crucial role in the development of high-volume mold-injected, pressed, and/or formed products. A mold fabrication consists of a set of sub-processes and usually takes several months to complete its design and production. Due to the shortening of product lifecycle, the sequence of process execution has to be reengineered to improve its efficiency. This resea...

This paper describes a feature-based approach to automated design of multi-piece sacrificial molds. We use multi-piece sacrificial molds to create complex 3D polymer/ceramic parts. Multipiece molds refer to molds that contain more than two mold components or subassemblies. Our methodology has the following three benefits over the state-of-the-art. First, by using multi-piece molds we can create...

Complex structures manufactured using low-pressure vacuum bag-only (VBO) prepreg processing are more susceptible to defects than flat laminates due to complex compaction conditions present at sharp corners. Consequently, effective defect mitigation strategies are required to produce structural parts. In this study, we investigated the relationships between laminate properties, processing condit...

Molten metal meniscus profile and mold flux channel width were measured under high frequency magnetic field by model experiments, then the dynamic pressure in mold flux channel were calculated during one mold oscillation period. It is found that the high frequency magnetic field can decrease the dynamic pressure greatly, which may be one mechanism of improving the billets surface quality by the...

Male, born in 1964, Ph. D, Professor. His research interests mainly focus on the numerical simulation of mold filling and solidification, and optimal gating system design. The first author Quan-Zhi Dong is one of the master candidates supervised by him. E-mail: [email protected] Received: 2012-08-10; Accepted: 2012-09-10 *Ho-Young Hwang Quan-Zhi Dong , Young-Sim Choi , Jun-Ho Hong 2 and *Ho-...

This paper deals with the problem of reliable guaranteed cost control for linear descriptor time-delay systems with actuator failure. The actuator failure mold adopted in this paper is in complete form to describe variation of the actuator. To design a controller such that, for admissible actuator failures, the plant remains asymptotically stable and guarantees an adequate level of a quadratic ...

Title of Dissertation: ALGORITHMS FOR GENERATING MULTI-STAGE MOLDING PLANS FOR ARTICULATED ASSEMBLIES Alok K. Priyadarshi, Doctor of Philosophy, 2006 Dissertation directed by: Associate Professor Satyandra K. Gupta Department of Mechanical Engineering Plastic products such as toys with articulated arms, legs, and heads are traditionally produced by first molding individual components separately...