Results 251 to 260 of about 10,489,891 (303)

Melt-Based Additive Manufacturing of Polyolefins Using Material Extrusion and Powder Bed Fusion

Polymer Reviews, 2023
Polyolefin-based thermoplastics such as polyethylene and polypropylene constitute a major fraction of the polymers employed in commodity applications due to their ease of processability, durability, and economic viability.
Arit Das, J. Bryant, C. Williams, M. Bortner   +3 more
semanticscholar   +1 more source

The Extrusion of Rate Sensitive Materials

1971
The principal factors affecting extrusion pressure, viz., temperature, ram speed, die geometry and conditions of lubrication, are discussed briefly. Emphasis is given to the importance of determining the area profile of the die, and through it the strain rate profile.
J. J. Jonas, T. Chandra
openaire   +1 more source

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).
openaire   +1 more source

Extrusion‐Spheronization of Energetic Materials

Propellants, Explosives, Pyrotechnics
ABSTRACT The prevailing method to produce plastic‐bonded explosive (PBX) molding powder, or “prills”, is a complex, multiphase, and bespoke process that was developed by the high explosives (HEs) manufacturing industry several decades ago.
Dylan J. Kline, Justin D. McAlister, Aholibama Escobar, Ryan Lin, Larry E. Peck, Adrien M. Ybarra, John D. Sain, Kenneth M. Hansen, Fowzia Zaka, Maxwell P. Lynch, H. Paul Martinez, Kyle T. Sullivan   +11 more
openaire   +1 more source

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.
openaire   +2 more sources

Optimizing bonding conditions between multilayer FFF material extrusion

Materials and Manufacturing Processes
Multi−material 3D printing using the material extrusion (ME) process is paramount for functionally graded parts. Finding the optimum parameters of the customized multi−material part is an issue in the filament ME field. Environmentally friendly materials,
Stephanos P. Zaoutsos, J. Kechagias
semanticscholar   +1 more source

Material extrusion

2020
Ian Gibson, David Rosen, Brent Stucker, Mahyar Khorasani   +3 more
openaire   +2 more sources

Material extrusion

2022
Maciej Cader, Wojciech Kiński
openaire   +1 more source

Conversion of a 11 MN Extrusion Press for Hydrostatic Extrusion of Superconducting Materials

1990
The purpose of this program was to demonstrate the feasibility of modifying an existing mid-size conventional extrusion press to permit, with a simple tooling change, hydrostatic extrusion of superconducting materials. Hydrostatic extrusion is considered by many the ideal method for low-temperature processing of superconductors in order to (a) maximize
T. S. Kreilick, R. J. Fiorentino, E. G. Smith, W. W. Sunderland   +3 more
openaire   +1 more source

Enhanced buckling strength of the thin-walled continuous carbon fiber–reinforced thermoplastic composite through dual coaxial nozzles material extrusion process

The International Journal of Advanced Manufacturing Technology, 2023
Dong-Yang Cao
semanticscholar   +1 more source