Results 101 to 110 of about 80,493 (290)
The design and development of a spacecraft appendage tie down mechanism [PDF]
, 1985 The design and evolution is described of a spacecraft Appendage Tie Down Mechanism (ATDM). Particular emphasis is paid to the mechanical aspects of using dry lubricants to increase the efficiency of acme threads and worm gearing.
Head, R., Nygren, W. D.
core +1 more source
A Wireless, Battery‐Free Artificial Throat Patch with Deep Learning for Emotional Speech Recognition
Advanced Science, EarlyView.In this work, Xu and co‐workers develop a wireless, battery‐free artificial throat patch system (ATPS) consisting of a carbon nanotube‐based thin‐film strain sensor and a miniaturized flexible printed circuit board, to enable real‐time sensing of throat signals.
Bingxin Xu +10 more
wiley +1 more source
Evaluation of a high performance, fixed-ratio, traction drive [PDF]
, 1983 A test program was initiated to evaluate the key operational and performance factors associated with the Nasvytis multiroller concept. Two sets of Nasvytis drives, each of slightly geometry, were parametrically tested on a back to back test stand ...
Anderson, N. E. +2 more
core +1 more source
MELEGROS: Monolithic Elephant‐Inspired Gripper with Optical Sensors
Advanced Science, EarlyView.MELEGROS is a monolithic, elephant‐inspired soft gripper integrating 3D‐printed optical sensors within a pneumatically actuated lattice. Simulation‐guided design decouples tactile and proprioceptive sensing. Characterized through grasping tests, MELEGROS can reach, scoop, and grasp, showcasing a paradigm where fully embedded sensing and continuous ...
Petr Trunin +4 more
wiley +1 more source
Advanced Science, EarlyView.Electrospinning a composite of PVDF, HfO2, and nano‐Cu transforms the discrete precursors into a continuous nanofiber mesh, forming a multi‐interface heterostructure with embedded nanoparticles. The presence of HfO2 and nano‐Cu at the fiber interfaces induces a highly aligned β‐phase, which enhances piezoelectric crystallinity and improves the material'
Jiawei Gu +9 more
wiley +1 more source
FUNCTIONAL REQUIREMENTS FOR STABILITY OF JACK UP DRILLING RIGS ON WORKING POSITION
Rudarsko-geološko-naftni Zbornik, 2008 Jack up drilling platforms are offshore drilling units composed by drilling rig situated on naval structure without self propelling device. Jack up drilling rigs are units used for drilling and completion of deep well bores in offshore oil and gas ...
Damir Zadravec, Zdenko Krištafor
doaj
Examining the Effects on a Fatigue Life of Preloaded Bolts in Flange Joints: An Overview
MetalsThe amplitude of a bolt load in dynamically loaded bolted flange joints depends on several factors: the resilience of the bolt and the clamping parts, the magnitude of the working load, the point of action of the working load, the way the working load is
Ivan Okorn +3 more
doaj +1 more source
Advanced Energy Materials, EarlyView.Hydrocarbon membranes have the potential to significantly enhance the efficiency of water electrolyzers. However, their application is often limited by insufficient stability resulting from excessive swelling. This work presents a strategy to achieve efficient, safe and stable operation of a 24 µm thin hydrocarbon membrane by combining a modified ...
Clara Schare +8 more
wiley +1 more source
BiomimeticsThis study investigates the impact of tightening torque (preload) and the friction coefficient on stress generation and fatigue resistance of a Ti-6Al-4V abutment screw with an internal hexagonal connection under dynamic multi-axial masticatory loads in ...
Ghada H. Naguib +9 more
doaj +1 more source
Advanced Intelligent Systems, EarlyView.This article develops a soft magnetic sensor array to extract 3D and distributional muscle deformations, which has highly consistent measurements in amphibious environments, robustness to hydraulic pressure, and about 200 ms faster response than an inertial measurement unit, achieving over 98% classification accuracy and below 3% phase estimation ...
Yuchao Liu +8 more
wiley +1 more source