Results 91 to 100 of about 4,519,794 (278)

Programmable Pneumatic Actuator System for a Bioinspired Artificial Colon

Advanced Materials Technologies, EarlyView.
A modular soft robotic colon simulator driven by programmable pneumatic actuation is developed to mimic physiological and pathological‐like motility patterns of the large intestine. Finite element–guided design and distributed control enable anatomically realistic deformation for peristalsis, segmentation, and mass movements, supporting capsule ...
Andrew Bickerdike, Bo Tian, Xizheng Fang, Zepeng Wang, Yang Liu, Lucy Adams, Shyam Prasad   +6 more
wiley   +1 more source

UCST‐Driven Shape Morphing in Digital Light Processing 4D‐Printed Hydrogels

Advanced Materials Technologies, EarlyView.
A DLP‐printable UCST hydrogel based on poly(acrylic acid‐co‐acrylamide) enables reversible thermally induced expansion and 4D shape morphing. Rational control of composition, porosity, and multimaterial architecture enables predictable 4D shape morphing through differential swelling and localized actuation, opening new opportunities for high‐resolution
Fato Niang, Vincent Lapinte, Sebastien Blanquer   +2 more
wiley   +1 more source

Hidden dangers in a simulation centre

Zdravniški Vestnik, 2011
In the article, we emphasize the need for all equipment in a simulation centre to be maintained in excellent working condition, and present a case of nitrous oxide (N2O) leakage through a damaged pressure regulator.
Miljenko Križmanić, Aleksander Manohin
doaj  

Mechanism of discharge backflow in reciprocating refrigeration compressors and its reduction using carbon fiber composite valve reeds

International Journal of Air-Conditioning and Refrigeration
This study investigates the mechanism of discharge backflow in reciprocating refrigeration compressors and its reduction using carbon fiber composite valve reeds.
Zhong Yang, Yangyang Zhang, Yubo Feng, Xianglong Dong, Liang Li, Haixiang Huan   +5 more
doaj   +1 more source

Fuel-Supply Pressure Regulation in a Helicopter Fuel System Using a Constant-Pressure Reducing Valve

Aerospace
Engine-inlet fuel pressure in helicopters can fluctuate during flight manoeuvres because load-factor variation changes both fuel distribution in the tanks and the pressure balance along the fuel-supply pipeline.
Yecheng Nie, Xiaodong Mao, Weihua Wang, Xianze Meng, Pengyu Li   +4 more
doaj   +1 more source

A Constraint‐Based Analytical Framework for Design‐Space Analysis and Material Screening of Tubular Multilayer Dielectric Elastomer Pumps for Extracorporeal Circulatory Applications

Advanced Materials Technologies, EarlyView.
A constraint‐based analytical framework maps the coupled effects of material properties, structural parameters, and operating conditions in tubular dielectric elastomer pumps for extracorporeal circulatory applications. The approach defines performance boundaries through mechanical, electrical, and hydraulic constraints and identifies feasible design ...
Yan Zhang, Amine Benouhiba, Yoan Civet, Yves Perriard   +3 more
wiley   +1 more source

Effects of Valve, Armature, and Armature Pin Guidance on Diesel Injector Performance

Applied Sciences
The valve, armature, and armature pin are critical factors influencing the hydraulic pressure differences in diesel injectors, and are essential for injection and backflow quantity control.
Fırat Işıklı, Gökhan Şentürk, Ali Sürmen   +2 more
doaj   +1 more source

Biodegradable and Edible Milli‐Fluidic Logic Circuits

Advanced Materials Technologies, EarlyView.
Fully biodegradable and edible fluidic circuits are developed using gelatin‐based valves that operate at low pressure. Logic gates, a one‐bit memory, and a ring oscillator are demonstrated, showing that biodegradable materials can perform computation and control.
Shuhang Zhang, Bokeon Kwak, Özgün Ekrem, Dario Floreano   +3 more
wiley   +1 more source

Digital hydraulic 3-way pressure reducing valve

, 2010
Digitaalihydrauliikan kehitys on ollut viime aikoina erittäin nopeaa. Suurimmat ponnistukset on suunnattu nopeampiin venttiileihin, energiatehokkaisiin järjestelmiin ja digitaalihydraulisiin toimilaitteisiin.
Lähteenmäki, Teemu
core  

Liquid Metal Resistive Sensing Architectures for Measuring Diaphragm Strain Responses on Obstructed Surfaces

Advanced Materials Technologies, EarlyView.
A liquid metal‐based strain‐sensing architecture to measure the deformation of a circular diaphragm against obstructed surfaces is formulated using finite element modeling and confocal imaging to establish the mechanical framework and is utilized to control diaphragm‐induced confinement on a bead array, as validated by biomolecular loading level ...
Abdullah‐Bin Siddique, Jui‐Hong Weng, Deng‐Kai Yang, Chia‐Fu Chou, Nathan S. Swami   +4 more
wiley   +1 more source