Results 111 to 120 of about 2,049 (283)

Prototyping an Innovative Ducted Fan System With Multi‐element Wings for the Electric Propulsion of Flying Devices

Macromolecular Symposia, EarlyView.
ABSTRACT This paper presents theoretical aspects and experimental tests for the design and optimization of a novel ducted fan propulsion system, complemented by multi‐element wings inspired by Handley Page and the aerodynamic Channel Wing concept.
Adrian Niță, Magdalena Roşu, Adina‐Mihaela Struț, Nicolae Pop, Mihaiela Iliescu   +4 more
wiley   +1 more source

A Sub‐Microsecond Switch Enabling SWIFT 23Na Imaging at 10.5 T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To enable sodium SWIFT imaging, which is a zero‐echo time imaging technique, at ultra‐high magnetic fields through the development of custom electronics hardware, and to showcase this capability with in vivo imaging results. Methods The custom hardware developed consists of a high‐speed optical trigger with 10 ns resolution, an in‐bore
Russell L. Lagore, Simon Schmidt, Edward J. Auerbach, Naoharu Kobayashi, Christoph Schildknecht, Steen Moeller, Elnaz Mahmoudi Mahmoudalilou, Štefan Zbýň, Jutta Ellermann, Gregor Adriany, Gregory J. Metzger   +10 more
wiley   +1 more source

Extrusion blow molding of environmentally friendly bottles in biodegradable polyesters blends

, 2019
Increasing awareness of the environmental impact of oil-relying plastic materials is prompting Academia and manufacturing industry to develop eco-friendly materials and alternative technological solutions.
Puopolo M., Aversa C., Barletta M., Vesco S.   +3 more
core   +1 more source

Biodegradable starch-based films containing saturated fatty acids: thermal, infrared and raman spectroscopic characterization

Polímeros
Biodegradable films of thermoplastic starch and poly (butylene adipate co-terephthalate) (PBAT) containing fatty acids were characterized thermally and with infrared and Raman spectroscopies. The symmetrical character of the benzene ring in PBAT provided
Marcelo M. Nobrega, Juliana B. Olivato, Carmen M. O. Müller, Fabio Yamashita   +3 more
doaj  

Using Secondary Air Cooling in Blown Film Extrusion: Concept Design and Experimental Study

, 2019
The characteristics and the quality of a blown film are strongly influenced by the stretching and simultaneous cooling of the molten polymer within the bubble formation zone. Moreover, the output rate of the process is generally limited by the cooling rates and the stability of the bubble.
Dohm, Christoph, Wortberg, Johannes, Schiffers, Reinhard   +2 more
openaire   +4 more sources

Thermoplastic‐Resin Transfer Molding Technology: Development and Challenges Toward Industrialization

Polymer Composites, EarlyView.
Illustration of the key aspects involved in the manufacture of thermoplastic composites by T‐RTM highlighting the relationships between raw materials, resin mixing strategies, polymerization parameters, and processing equipment ranging from laboratory to industrial scale. ABSTRACT Driven by increasingly stringent international environmental regulations,
Filipe P. Martins, Paulo S. Lima, Ricardo Torcato, Laura Santos, J. M. Oliveira   +4 more
wiley   +1 more source

Influence of Thermal Cycling on Friction, Wear, and Damage Evolution of Fused Deposition Modeling of 3D‐Printed Glass Fiber Reinforced Polylactic Acid Composites

Polymer Composites, EarlyView.
Schematic illustration of the experimental procedure of the specimens. ABSTRACT This research work investigated the effect of the cyclic thermo‐hygrometric aging regime between −20°C and +40°C with 0–400 cycles on the reciprocating tribological properties of fused deposition modeling (FDM) printed polylactic acid (PLA) and the same material reinforced ...
Sinan Fidan, Satılmış Ürgün, Nevin Gamze Karsli, Taner Yılmaz, Mustafa Özgür Bora, Mehmet İskender Özsoy   +5 more
wiley   +1 more source

Geometrical properties of polymer films produced in blown molding extrusion process

, 2016
Właściwości folii wytwarzanej metodą wytłaczania z rozdmuchiwaniem można ocenić na podstawie stopnia rozciągania folii w kierunku poprzecznym, stopnia rozciągania w kierunku wzdłużnym oraz parametrów geometrycznych, to jest grubości i szerokości folii ...
Garbacz, T., Palutkiewicz, P.
core  

Mechanical Properties of Biodegradable Mulch Films Contained Poly(Lactic Acid) and Modified Natural Rubber Prepared by Blown Film Extrusion

, 2017
The present research aimed to develop biodegradable mulch films that could resolve the environmental problem in agriculture. The research also compared the properties of transparent and black commercial mulch films.
Tarinee Nampitch, Pran Hanthanon, Chanon Wiphanurat, Sumate Ouipanich, Thiti Kaisone, Yupawan Thongjun   +5 more
core   +1 more source

Rheological Characterization and Multi‐Regime Viscosity Modeling of Diluted Polyethylene Mixtures

Polymer Engineering &Science, EarlyView.
This study maps the flow behavior of low‐density polyethylene in a recycling solvent from dilute solutions to entangled melts. By integrating time–concentration and time–temperature superposition, and coupling three complementary rheometry methods, a unified semiempirical model accurately predicts steady‐shear viscosity over nine decades of viscosity ...
Johannes Krug, Ernst Georg Viehböck, Alexander Hammer, Ursula Steiner, Christof Murnig, Martin Reichel, Christian Paulik, Gerald Berger‐Weber   +7 more
wiley   +1 more source