Results 251 to 260 of about 213,768 (303)

Extrusion Rheometry of Fluid Materials

Journal of Dental Research, 1979
A capillary extrusion rheometer was developed and tested using Newtonian oils of known viscosity and seven endodontic sealers. The described ap paratus and technique appear appropriate for com parative assessment of the rheological characteristics of a variety of fluid dental materials.
S G, Vermilyea, E F, Huget, L B, De Simon   +2 more
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Extrusion behavior of viscoelastic materials

Journal of Colloid Science, 1950
Abstract The relation between viscoelastic properties and extrusion characteristics is discussed. It is shown that materials characterized by nonlinear deformation-time properties necessarily exhibit a nonlinear relation between volume rate of discharge and pressure in extrusion.
F.D Dexter, G.J Dienes
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Capillary extrusion of composite materials

Polymer Engineering & Science, 1971
AbstractInvestigations on the extrusion characteristics of composite systems were performed on the Sieglaff‐McKelvey capillary rheometer, with particular emphasis on the characterization of flow instability and “melt fracture” phenomena. The mechanisms of melt fracture appear to be identical for both the filled and unfilled polymers (1.
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Extrusion rheometer for characterizing thixotropic materials

Review of Scientific Instruments, 1977
A special form of extrusion rheometer has been developed for characterizing thixotropic pastes and high viscosity materials. It consists of a cylinder with an orifice situated halfway along, and has a piston at each end. In use, a sample plug of material is forced through the orifice at a uniform rate by one of the pistons, and the load required is ...
G. B. Hodgetts, A. R. I. Freestone
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Extrusion characteristics of reinforced composite materials

Soviet Powder Metallurgy and Metal Ceramics, 1986
The constituents of a metal-metal fiber material react with each other in accordance with the relevant constitution diagram. The results of experiments conducted on metal specimens have enabled a process to be developed for the production of fiber materials by extrusion and for structural investigations to commence.
N. V. Manukyan, A. S. Petrosyan
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Extrusion of implanted materials

1985
Generally, extrusion is interpreted as a reaction of the body to non- tolerated implants. This applies to many uses of various materials in different surgical fields. Middle ear implants are used for very different purposes (e.g. ossicular replacement prostheses, grommets, sheat- ings, posterior canal wall implants, materials for obliteration).
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Preliminary investigation into metal-material extrusion

Progress in Additive Manufacturing, 2020
Additive manufacturing (AM) technologies provide a method of fabrication that minimizes the production of waste and maximizes part customization. The most common form of this technology is material extrusion (ME) in which material is deposited layer-by-layer to produce a highly customized part.
Shane Terry, Ismail Fidan, Khalid Tantawi   +2 more
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Material Extrusion Additive Manufacturing Systems

2020
Abstract Material extrusion systems are the most common types of additive manufacturing systems, also known as three-dimensional (3D) printers. This article focuses on the general 3D printing processes as can be demonstrated and manipulated in desktop printers.
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Material Extrusion Based Ceramic Additive Manufacturing

2020
Abstract This article is a review of the material extrusion-based ceramic additive manufacturing (MECAM) processes. The discussion begins with details of extrusion with filament and paste, covering the most popular variants of paste extrusion-based MECAM techniques that can be differentiated based on paste type and the method of shape ...
Wenbin Li, Ming C. Leu
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Extrusion freeforming of Nylon 6 materials

Polymer, 1999
A modified Nylon 6 formulation, developed originally for reaction injection moulding, has been used to freeform small parts. Liquid monomer is deposited as a fine stream from computer-controlled writing head and polymerizes on a heated plate as the part is built up.
John L. Lombardi, Paul Calvert
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