Results 91 to 100 of about 103,658 (285)

Experimental and Numerical Investigation of a Dynamic Function Vehicle Tire Air Control Valve [PDF]

open access: yesJournal of Applied Fluid Mechanics
The Central Tire Inflation System (CTIS) is increasingly adopted in buses, trucks, and military vehicles, as it enables adaptive tire pressure control under varying terrain conditions, thereby improving vehicle performance and safety.
Y. S. Korkmaz   +3 more
doaj   +1 more source

Flexible Tactile Actuator Arrays With Integrated Electroosmotic Pumps for Wearable Haptic Systems

open access: yesAdvanced Materials Technologies, EarlyView.
1 ×$\times$ 9 and 4 ×$\times$ 4 flexible tactile actuator arrays integrating electroosmotic pumps are developed to deliver pressure and vibration feedback on wearable platforms. Their thin, compliant structure conforms seamlessly to curved body surfaces, providing intimate contact and enhanced haptic sensations.
Heejin Yu, Joonbum Bae
wiley   +1 more source

A computational fluid dynamics evaluation of a pneumatic safety relief valve [PDF]

open access: yes, 2008
Safety relief valves are well established components preventing catastrophic failure of pressurised systems when non-normal operating conditions occur.
Dempster, W.M., Elmayyah, W.
core   +3 more sources

A high-speed transplanting machine for plug seedlings with integrated mechanical and pneumatic drive [PDF]

open access: yesEngenharia Agrícola
The existing plug seedling transplanters that are used for large-scale vegetable cultivation in China are faced with three main issues: the poor reliability of electrical control systems in the harsh conditions in the field, low efficiency of single-row ...
Liqiang Xiao   +4 more
doaj   +2 more sources

Patterned Screen‐Printing Process for Substrate‐Free and Scalable Hyaluronic Acid Microneedle Arrays

open access: yesAdvanced Materials Technologies, EarlyView.
A substrate‐free microneedle array comprising a hybrid hyaluronic acid ink was fabricated via a scalable screen‐printing process for flexible transdermal drug delivery. Defect‐free mold filling was achieved using a vacuum‐assisted jig and a delayed drying system, and the use of this versatile platform for multi‐drug patterning and ex vivo skin ...
Sanghyun Ahn   +3 more
wiley   +1 more source

A modular torso phantom featuring a pneumatic stepper and flow for MR sequence development

open access: yesFrontiers in Physics
IntroductionPhantoms mimicking tissue motion have become a valuable tool for quality control in various fields of medical physics including lung phantoms for image-guided radiotherapy and functional imaging in nuclear medicine or magnetic resonance ...
Tito Körner   +7 more
doaj   +1 more source

Shock detection and design enhancement for pneumatic control valve [PDF]

open access: yesFME Transactions
The existence of shockwaves in pneumatic valves can greatly affect their efficiency and cause damage to important parts. This study focuses on the examination of a cost-effective pneumatic directional control valve with the aim of augmenting its output ...
Elmayyah Wael
doaj   +1 more source

Programmable Pneumatic Actuator System for a Bioinspired Artificial Colon

open access: yesAdvanced 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   +6 more
wiley   +1 more source

A Cryopreservation‐Based Supply Chain Strategy for Extrusion Bioprinting in Space

open access: yesAdvanced Materials Technologies, EarlyView.
Extrusion bioprinting on crewed space platforms requires a bioink that stays functional along the logistic chain. Here, cells and biomaterial ink travel separately, the cells cryopreserved and the ink cold stored, and are combined only minutes before printing.
Johannes Windisch   +7 more
wiley   +1 more source

High Throughput Aerosol Jet Printing to Operationalize High Aspect Ratio Patterning

open access: yesAdvanced Materials Technologies, EarlyView.
High‐throughput aerosol jet printing poses distinct limiting mechanisms to the printing process. These include rapidly changing ink chemistries, atomization instabilities, and liquid‐phase spreading. The combination of in‐line heating, process monitoring, and traditional optimization procedures enables rapid printing of high‐aspect‐ratio structures ...
Bella I. Guyll   +4 more
wiley   +1 more source

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