Results 141 to 150 of about 172,995 (305)
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source
In this paper, an optimal motion planning algorithm and dynamic modeling of a planar kinematically redundant manipulator are considered. Kinematics of the manipulator is studied, Jacobian matrix is obtained and the dynamic equations are derived using D ...
Sajjad Taghvaei +2 more
core +1 more source
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios +5 more
wiley +1 more source
A Novel Recurrent Neural Network for Improving Redundant Manipulator Motion Planning Completeness. [PDF]
Li Y, Li S, Hannaford B.
europepmc +1 more source
In situ synchrotron high‐energy X‐ray diffraction reveals the real‐time high‐temperature phase evolution of a ternary V‐9Si‐6.5B alloy. The study uncovers a kinetically delayed V5SiB2 → V8SiB4 transformation governed by massive structural and chemical barriers.
Zahra Sabeti +4 more
wiley +1 more source
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley +1 more source
Manipulability constraint locus for a six degrees of freedom redundant planar manipulator
This paper uses the manipulability constraint locus to evaluate the properties of manipulability measure for singularity avoidance in a six degrees of freedom three dimensional planar redundant manipulator. A manipulability constraint locus is the set of
Mohamed, H.A.F. +2 more
core
Artificial neural network for redundant manipulator inverse kinematics computation
A redundant manipulator can be defined as a manipulator that has more degrees of freedom than necessary to determine the position and orientation of the end-effector.
Utama, Wibawa, Hou, Edwin S.
core +1 more source
Investigating the Low‐Temperature Phase Stability of the Binary Ta–W System
Atomistic simulations show that the binary Ta–W system forms ordered intermetallic phases, B2‐TaW and D03‐TaW3, as 0 K ground states. Configurational entropy, however, lowers the free energy of the disordered bcc solid solution, which becomes the stable phase above about 400 K.
Klemens Lechner +7 more
wiley +1 more source
A closed-loop framework for inverse kinematics of the 7-DOF manipulator
The 7-DOF redundant manipulator in greatly improves the obstacle/singularity avoidance capability and operational flexibility. Meanwhile, its inverse kinematics problem would be much difficult since it has an infinite number of solutions. This paper uses
Wang Z(王争) +5 more
core

