نتایج جستجو برای: rotational molding
تعداد نتایج: 35842 فیلتر نتایج به سال:
Objectives The authors performed a systematic review to evaluate the potential beneficial effects of the nasoalveolar molding appliance on nonsyndromic unilateral clefts of the lip and/or palate prior to primary lip repair. Material and Methods A literature search was performed using three electronic databases (PubMed, Embase, Web of Science) and three journals ("Cleft Palate-Craniofacial Jou...
This study investigates the effects of micro- and nano-sized SiC powder on the rheological behavior of Al based feedstocks for powder injection molding (PIM). Different compositions of Al feedstocks with additions of micro and nano-SiC powder were prepared and their rheological properties were measured with a rotational rheometer. The effects of SiC content and shear rate were investigated and...
BACKGROUND Secondary to circulating maternal estrogens, a baby's ear cartilage is unusually plastic during the first few weeks of life, providing an opportunity to correct ear deformities by molding. If molding is initiated during the first days of life with a more rigid molding system than previously described in the literature, the authors hypothesized that treatment time would be reduced and...
Creating highly articulated miniature structures requires assembling a large number of small parts. This is a very challenging task and increases cost of mechanical assemblies. Insert molding presents the possibility of creating a highly articulated structure in a single molding step. This can be accomplished by placing multiple metallic bearings in the mold and injecting plastic on top of them...
Abstract During processing and bubble growth processes, the melt viscosity changes with temperature, pressure, blowing agent concentration. Therefore, measurement prediction methods for characterization in terms of dependency are needed. This study demonstrates applicability in-line measurements during foam injection molding process a model superposition prediction. In present study, polystyren...
Microsystem technologies are believed to be an important part of the technological foundation upon which the world can continue to improve the standard of living in the twenty-first century. Microelectromechanical systems (MEMS) have been studied intensely for over two decades. Si-based MEMS, fabricated by surface and bulk micromachining techniques derived from IC processing technology, dominat...
The Folger–Tucker-Equation (FTE) arises from a modification of the Jeffery equation and describes orientation elongated particles in flow by means tensor A. Though FTE represents most widespread commercially used relaxation for A simulations injection molding short-fiber reinforced fluids, analytical solutions formulation applied industry are hardly investigated. Previous work focused on soluti...
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