Results 261 to 270 of about 46,528 (305)

Hot-Compression Testing

2005
Abstract This article describes the use of compression tests, namely, cylindrical compression, ring compression, and plane-strain compression tests at elevated temperatures. It discusses the effects of the temperature, strain rate, and deformation heating on metals during the cylindrical compression test, with the help of flow curves ...
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Acrolein synthesis from glycerol in hot-compressed water

Bioresource Technology, 2007
Glycerol conversion was conducted in hot-compressed water (HCW: 573-673 K, 25-34.5 MPa) using a batch and a flow apparatus and the influences of temperature, H(2)SO(4), glycerol concentration, and pressure, were examined. The yield of acrolein was enhanced by higher glycerol and H(2)SO(4) concentration, and higher pressure.
Masaru, Watanabe, Toru, Iida, Yuichi, Aizawa, Taku M, Aida, Hiroshi, Inomata   +4 more
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Measurement of Muscle Stimulation and Hot Compression for Rehabilitation

2021 International Conference on Electrical, Communication, and Computer Engineering (ICECCE), 2021
This research is to study the electric muscle stimulation system and hot compress. As well as focusing on building tools for applications in rehabilitation medicine and physical therapy. The neuromuscular system is an important mechanism in human life.
Neramitr Chirakanphaisarn, Thadsanee Thongkanluang   +1 more
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Hot-compression behavior of Al alloy 5182

Journal of Central South University, 2012
Hot-compression of aluminum alloy 5182 was carried out on a Gleeble-1500 thermo-simulator at deformation temperature ranging from 350 °C to 500 °C and at strain rate from 0.01 s−1 to 10 s−1 with strain range from 0.7 to 1.9. The microstructures and macro-textures evolution under different conditions were investigated by polarized optical microscopy and
Jian-guo Tang, Xing-xing Huang, Xin-ming Zhang   +2 more
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Compressive creep behaviour of hot-pressed PbTe

Scripta Materialia, 2017
Abstract Creep deformation is of concern in PbTe thermoelectric modules operating for years at high homologous temperatures while being subjected to internal or external stresses. The creep strain rates of hot-pressed PbTe are measured at 400 °C; a power-law is found, with a stress exponent n  = 1.7 at low stresses (2–7 MPa) and n  = 4.4 at high ...
C.C. Li, G.J. Snyder, D.C. Dunand
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A wedge plastometer for hot multistage compression testing

Journal of Mechanical Working Technology, 1978
Abstract In many hot-forming processes, the workpiece is deformed in a number of stages, with a short time interval between each stages during which some recovery or recrystallization occurs and the subsequent yield-stress level is reduced. Multistage hot-forming processes include hammer forging, rotary forging, tandem rolling and ring rolling.
J.B. Hawkyard, C. Highton, P.H. Lo
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Compressive creep of hot pressed silicon carbide

Materials Science and Engineering: A, 2010
Abstract Silicon carbide has a good match of chemical, mechanical and thermal properties and therefore is considered an excellent structural ceramic for high temperature applications. The aim of the present work is compressive creep evaluation of liquid phase sintered silicon carbide with aluminum and rare earth oxide as sintering aids.
C.R.M. Silva, M.C.A. Nono, D.A.P. Reis, M.K. Hwang   +3 more
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Model for the evolution of hot and compressed spherical nuclei

Zeitschrift f�r Physik A Atomic Nuclei, 1986
A hydrodynamical approach and the Thomas Fermi approximation have been used to study the evolution of hot and compressed nuclei. Spherical symmetry was assumed in the calculation. The dynamical equations have been transformed into “Schrodinger like” equations (using the Madelung transformation) and were solved numerically.
J. Nemeth, M. Barranco, C. Ng�, E. Tomasi   +3 more
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Hot compression behavior of GZ31 magnesium alloy

Journal of Alloys and Compounds, 2015
Abstract Hot deformation behavior of Mg–3Gd–1Zn (GZ31) magnesium alloy was studied by hot compression tests over the temperature range of 300–500 °C under strain rates of 0.0001–0.1 s −1 . This material exhibited typical broad single-peak dynamic recrystallization behavior followed by a gradual drop towards the steady state stress.
M. Roostaei, M.H. Parsa, R. Mahmudi, H. Mirzadeh   +3 more
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Hot-Hole Streaming in Uniaxially Compressed Germanium

1996
The streaming motion of charge carriers occurs in sufficiently strong electric field provided that the threshold scattering mechanism (e.g. optical-phonon emission) exists. It is the cyclic process consisted of scattering-free acceleration of holes up to the optical-phonon energy, emission of an optical phonon and the return to the region of small ...
I. V. Altukhov, M. S. Kagan, K. A. Korolev, V. P. Sinis   +3 more
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