Results 81 to 90 of about 2,417,705 (385)

Non‐Destructive and Mechanical Characterization of the Bond Quality of Co‐Extruded Titanium‐Aluminum Profiles

Advanced Engineering Materials, EarlyView.
This study investigates the bond quality of co‐extruded aluminum–titanium hybrid profiles, focusing on the lateral angular co‐extrusion (LACE) process. It examines how heat treatments (HT) affect intermetallic phase formation, bond strength, and material properties.
Norman Mohnfeld, Ahmed Dewidar, Karim Qarbi, Hendrik Wester, Florian Patrick Schäfke, Alexej Verschinin, Hans Jürgen Maier, Sebastian Barton, Christian Klose, Johanna Uhe   +9 more
wiley   +1 more source

Speed control method for dual-flexible manipulator with a telescopic arm considering bearing friction based on adaptive PI controller with DOB

Alexandria Engineering Journal, 2022
A dual-flexible manipulator with a telescopic arm is affected by joint flexibility, load flexibility, and bearing friction, which will cause angular velocity fluctuation.
Dongyang Shang, Xiaopeng Li, Meng Yin, Fanjie Li   +3 more
doaj  

A Different Perspective on the Solid Lubrication Performance of Black Phosphorous: Friend or Foe?

Advanced Engineering Materials, EarlyView.
Researchers investigate black phosphorous (BP) as a standalone solid lubricant coating through ball‐on‐disc linear‐reciprocating sliding experiments in dry conditions. Testing on different metals shows BP doesn't universally reduce friction and wear. However, it achieves 33% friction reduction on rougher iron surfaces and 23% wear reduction on aluminum.
Matteo Vezzelli, Manel Rodríguez Ripoll, Sabine Schwarz, Ali Erdemir, Maria Clelia Righi, Carsten Gachot   +5 more
wiley   +1 more source

Precession of a Freely Rotating Rigid Body. Inelastic Relaxation in the Vicinity of Poles [PDF]

, 1999
When a solid body is freely rotating at an angular velocity ${\bf \Omega}$, the ellipsoid of constant angular momentum, in the space $\Omega_1, \Omega_2, \Omega_3$, has poles corresponding to spinning about the minimal-inertia and maximal-inertia axes ...
Asphaug E., Belton M. J. S., Black G. J., Burns J. A., Chinnery A. E., Efroimsky M., Giblin I., Giblin I., Harris A. W., Hubert M. C. E., Karato S.-i., Knopoff L., Lazarian A., Lazarian A., Lazarian A., Lazarian A., Michael Efroimsky, Modi V. J., Ostro S. J., Ostro S. J., Ostro S. J., Ostro S. J., Peale S., Peale S. J., Prendergast K. H., Purcell E. M., Sagdeev R. Z., Samarasinha N. H.   +27 more
core   +2 more sources

Development of a Novel Processing Route for Dispersoid/Precipitation‐Strengthened High Conductive Copper Alloys by Using Metalized Nanoceramics in Additive Manufacturing

Advanced Engineering Materials, EarlyView.
This study explores a process chain to produce dispersoid‐strengthened CuCr1Zr for applications requiring high strength and conductivity. Using gas‐atomized powder and copper‐plated alumina nanoparticles, additive manufacturing is performed via powder bed based additive manufacturing with green and red lasers, followed by heat treatment.
Heinrich von Lintel, Abdelrahman Elsayed, Lukas Mielewczyk, Katja Eichmann, Julia Grothe, Ulrich Krupp, Avinash Hariharan, Katrin Jahns   +7 more
wiley   +1 more source

Irrotational and Incompressible Binary Systems in the First Post-Newtonian Approximation of General Relativity [PDF]

, 1999
The first post-Newtonian (PN) hydrostatic equations for an irrotational fluid are solved for an incompressible binary system. The equilibrium configuration of the binary system is given by a small deformation from the irrotational Darwin-Riemann ...
Abramovici, Aizenman, Asada, Bardeen, Baumgarte, Bildsten, Bonazzola, Bradaschia, Chandrasekhar, Chandrasekhar, Chandrasekhar, Chandrasekhar, Chandrasekhar, Gourgoulhon, Hough, Keisuke Taniguchi, Kochanek, Kuroda, Lai, Lai, Lai, Lindblom, Lombardi, Shapiro, Shibata, Shibata, Taniguchi, Taniguchi, Taniguchi, Teukolsky, Thorne, Uryū, Uryū, Uryū, Wilson   +34 more
core   +2 more sources

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

The Inversion of the Real Kinematic Properties of Coronal Mass Ejections by Forward Modeling

, 2010
The kinematic properties of coronal mass ejections (CMEs) suffer from the projection effects, and it is expected that the real velocity should be larger and the real angular width should be smaller than the apparent values.
Billings, Chen, Michalek, Peng-Fei Chen, Tousey, You Wu, Zhang   +6 more
core   +1 more source

Angular Velocity Nonlinear Observer From Single Vector Measurements [PDF]

IEEE Transactions on Automatic Control, 2015
The paper proposes a technique to estimate the angular velocity of a rigid body from single vector measurements. Compared to the approaches presented in the literature, it does not use attitude information nor rate gyros as inputs.
Lionel Magnis, N. Petit
semanticscholar   +1 more source

Consolidate Overview of Ribonucleic Acid Molecular Dynamics: From Molecular Movements to Material Innovations

Advanced Engineering Materials, EarlyView.
Molecular dynamics simulations are advancing the study of ribonucleic acid (RNA) and RNA‐conjugated molecules. These developments include improvements in force fields, long‐timescale dynamics, and coarse‐grained models, addressing limitations and refining methods.
Kanchan Yadav, Iksoo Jang, Jong Bum Lee
wiley   +1 more source