Results 61 to 70 of about 19,264 (300)

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

Development of a Novel Linear Magnetic Actuator

International Journal of Automation Technology, 2014
The aim of this paper is to design, fabricate and control a novel Linear Magnetic Actuator (LMA) for applications such as active magnetic bearing systems to deal with vibration problems in rotating machines. This LMA actuator contains a moving body named ‘mover’ and three driving parts to drive the mover. Firstly, experiments have been conducted on the
Truong Quoc Thanh, Dinh Quang Truong, Nguyen Minh Tri, Kyoung Kwan Ahn   +3 more
openaire   +1 more source

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

Advanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad, Aleksander Kostka, Gowtham Arivanandhan, Yujiao Li, Alan Savan, Manfred Kohl, Alfred Ludwig   +6 more
wiley   +1 more source

Model of Energetic Efficient Redundant Actuation

, 2017
The model of linear drive with redundant actuation and control system is designed to compare the energy efficiency of the different actuation type. The redundant actuation control system is optimized to increase the energy efficiency of the entire drive.
Pavel Houška, Kamil Šubrt, Radek Knoflíček   +2 more
core   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Testbed for on-orbit servicing and formation flying dynamics emulation

, 2010
The testbed for on-orbit servicing and formation flying dynamics emulation is a facility to emulate the force and momentum-free dynamics of multi-spacecraft missions on ground.
Theil, Stephan, Stephan Theil, Schlotterer, Markus, Markus Schlotterer   +3 more
core   +1 more source

Actuation Spaces Synthesis of Lower-Mobility Parallel Mechanisms Based on Screw Theory

Chinese Journal of Mechanical Engineering, 2021
The lower-mobility parallel mechanism has been widely used in the engineering field due to its numerous excellent characteristics. However, little work has been devoted to the actuator selection and placement that best satisfy the system’s functional ...
Shihua Li, Yanxia Shan, Jingjun Yu, Yaxiong Ke   +3 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

3-DOF force-sensing micro-forceps for robot-Assisted membrane peeling: Intrinsic actuation force modeling

, 2016
Membrane peeling is a challenging procedure in retinal microsurgery, requiring careful manipulation of delicate tissues by using a micro-forceps and exerting very fine forces that are mostly imperceptible to the surgeon.
Iulian Iordachita, Peter Gehlbach, Jiangzhen Guo, Gao AZ(高安柱), Gonenc, Berk, Liu H(刘浩), Guo, Jiangzhen, Iordachita, Iulian, Hao Liu, Anzhu Gao, Berk Gonenc, Gehlbach, Peter   +11 more
core   +1 more source

Silicone-layered waterproof electrohydraulic soft actuators for bio-inspired underwater robots

Frontiers in Robotics and AI
Electrohydraulic soft actuators are a promising soft actuation technology for constructing bio-inspired underwater robots owing to the features of this technology such as large deformations and forces, fast responses, and high electromechanical ...
Takumi Shibuya, Shuya Watanabe, Jun Shintake   +2 more
doaj   +1 more source