Results 281 to 290 of about 10,365,322 (346)

Thermoelastic Constitutive Equations for Chemically Hardening Materials

Journal of Applied Mechanics, 1974
Thermoelastic constitutive equations are derived for a material undergoing solidification or hardening as the result of a chemical reaction. The derivation is based upon a two component model whose composition is determined by the degree of hardening, and makes use of strain-energy considerations.
Shaffer, Bernard W., Levitsky, Myron
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Anisotropic Hardening of Initially Orthotropic Materials

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1979
AbstractA hardening model for an orthotropic material is proposed. The corresponding anisotropic parameters are the components of a fourth order tensor function of the plastic strain, entering a quadratic equation for the yield surface. Assuming polynomial dependence on the plastic strain, the most general form of a polynomial fourth order orthotropic ...
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Strain-Hardening Topography of Elastic-Plastic Materials

Journal of Applied Mechanics, 1983
In the context of a purely mechanical rate-type theory of plasticity, a special set of constitutive equations is discussed. A method [1,2] of characterizing strain-hardening behavior is utilized to examine the different types of response that may be exhibited.
Casey, J., Lin, H. H.
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Dispersion-hardened platinum materials

Anti-Corrosion Manual, 1988
The Special Metal Products Business Area of Degussa AG, Frankfurt am Main, presented an overview of its range of dispersion-hardened platinum materials. These materials, which remain resistant to corrosion by aggressive media such as gases and salt or glass melts even at high temperatures and which are capable of withstanding high mechanical loads, are
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Particle bed 3D printing by selective cement activation – Applications, material and process technology

, 2020
The present work addresses particle bed binding by selective cement activation as an additive manufacturing process for cement-based materials in construction industry. Its focus is the effect of material and process on the microstructure and macroscopic
D. Lowke, Daniel Talke, Inka Dressler, D. Weger, C. Gehlen, C. Ostertag, Ron Rael   +6 more
semanticscholar   +1 more source

Materials with Thermo-Diffusive Hardening

Advanced Materials Research, 2011
Hardening problems in thermoplastic materials are presented. The examples of thermo-diffusive hardening are analyzed. Theoretical considerations are recalled to determine the combined effects of thermoplasticity with thermo-diffusion term considering gradients in interstitial concentration, in solvent composition, in stress and in temperature.
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Potentiometric nondestructive testing of surface-hardened materials

Review of Scientific Instruments, 1981
A new nondestructive method for the determination of the depth of surface-hardened layers in steels is presented. It is based on the measurement of the electric potential difference between points on the surface of the sample, as induced by a dc current flowing through the sample itself.
M. OMINI, IAZZI, Felice, A. RASTALDO, C. TURCO   +3 more
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Strain hardening rate in relation to microstructure in precipitation hardening materials

Le Journal de Physique IV, 2000
The influence of microstructure on strain hardening is studied through Kocks-Mecking plots in a number of systems showing precipitation hardening: Al-Zn-Mg, Al-Mg-Si-Cu, and Fe-Cu. The presence of a supersaturated solid solution is shown to result in an extremely high work hardening rate, due to dynamic precipitation during the straining.
A. Deschamps, S. Esmaeili, W. J. Poole, M. Militzer   +3 more
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Laser Hardened Materials Evaluation Laboratory (LHMEL)

Journal of Laser Applications, 1996
Since 1976, the Laser Hardened Materials Evaluation Laboratory (LHMEL) has been characterizing material responses to laser energy in support of national defense programs and the aerospace industry. Now that capability is available to commercial industry as well.
R. J. Hull, M. L. Lander
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Effect of steel slag on fresh, hardened and microstructural properties of high-calcium fly ash based geopolymers at standard curing condition

, 2019
This study presents an extensive experimental investigation on the effect of steel slag (SS) usage on the fresh, hardened and microstructural properties of high-calcium fly ash (FA) based geopolymer pastes at standard curing condition.
Weilong Song, Zhiduo Zhu, Yuyi Peng, Y. Wan, Xiaoyu Xu, Shaoyun Pu, Song Shigong, Yongqiang Wei   +7 more
semanticscholar   +1 more source