Results 241 to 250 of about 33,857 (279)

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

open access: yesAdvanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza   +3 more
wiley   +1 more source

Continuous high-pressure torsion using wires

open access: yesContinuous high-pressure torsion using wires
openaire  

The significance of slippage in processing by high-pressure torsion

open access: yesThe significance of slippage in processing by high-pressure torsion
openaire  

On the homogeneity of deformation by high pressure torsion

Scripta Materialia, 2004
Abstract Microstructures and microhardness have been carefully characterized for an austenitic steel deformed by High Pressure Torsion up to 16 total revolutions. A nearly idealized torsion deformation is observed even at large number of revolution.
Reinhard Pippan
exaly   +2 more sources

Modeling the temperature rise in high-pressure torsion

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2014
Experiments and finite element modeling were used to estimate the temperature rise during high-pressure torsion. The results show the temperature rise is dependent upon the material strength, the rotation rate, the sample radius, the heat capacity and the volume of the anvils.
Yi Huang   +2 more
exaly   +3 more sources

Structure of Cu deformed by high pressure torsion

Acta Materialia, 2005
Pure copper is deformed by high pressure torsion and the resulting microstructure is studied. Small structural elements are formed. Their size decreases with increasing strain and reach a steady-state. The misorientation between neighbouring structural elements increases with strain and finally reaches a nearly random distribution.
Reinhard Pippan   +2 more
exaly   +2 more sources

The evolution of homogeneity in processing by high-pressure torsion

Acta Materialia, 2007
Disks of high-purity aluminum were processed by high-pressure torsion (HPT) at room temperature under different conditions of imposed pressure and numbers of turns. Measurements were taken of the microhardness values both along diameters in each disk and following a rectilinear grid pattern to give color-coded maps of the hardness distributions.
Cheng Xu   +2 more
exaly   +3 more sources

The dead metal zone in high-pressure torsion [PDF]

open access: yesScripta Materialia, 2012
Plastic deformation behavior during high-pressure torsion (HPT) was analyzed by the finite element method in order to investigate heterogeneous deformation in HPT-processed disks. The effective strain and strain rate developed increase from the center to the edge of the HPT-processed disk; however, they decrease to zero at the surface corner of the ...
Lee, DJ, Yoon, EY, Park, LJ, Kim, HS
openaire   +3 more sources

Microstructures and Mechanical Properties of Ti-6Al-7Nb Processed by High-pressure Torsion [PDF]

open access: yesProcedia Engineering, 2014
Ti-6Al-7Nb was deformed by high-pressure torsion to improve the mechanical properties of the alloy. high-pressure torsion was conducted at room temperature under pressures of 2 and 6GPa for disk-shaped specimens.
Yusuke Tsutsumi   +2 more
exaly   +2 more sources

Bulk nanocrystalline ω-Zr by high-pressure torsion [PDF]

open access: yesScripta Materialia, 2008
Pure nanocrystalline Zr with a grain size of 30 nm and a microhardness of 400 HV has been fabricated by high-pressure torsion (HPT) at room temperature using a pressure of 6 GPa and five revolutions in 5 min.
A P Zhilyaev   +2 more
exaly   +2 more sources

Home - About - Disclaimer - Privacy