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Critical Wavelengths for Gap Nucleation in Solidification— Part II: Results for Selected Mold-Shell Material Combinations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this second part, we examine the contact pressure ratio, Ptr, at the lowest points of the upper mold surface troughs in a directional solidification process using the theoretical methodology ...
Critical Wavelengths for Gap Nucleation in Solidification— Part I: Theoretical Methodology
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A theoretical model of the gap nucleation process during pure metal solidification on a deformable mold of finite thickness is presented. Both surfaces of the mold follow a sinusoidal lay for ...
Thermoelastic Contact Problems for the Layer
Publisher: The American Society of Mechanical Engineers (ASME)
Thermal Stresses due to a Laser Pulse: Elastic Solution
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The thermal stress field in an elastic half-space due to a single pulse from a laser is derived for the general case of a mixed-mode structure beam. The mode structure models the output ...
Hydrodynamic Lubrication in Axisymmetric Stretch Forming—Part 2: Experimental Investigation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In order to test the validity of the theoretical model discussed in Part 1, an experimental technique, employing optical interferometry, has been developed to measure lubricant film thickness ...
Hydrodynamic Lubrication in Axisymmetric Stretch Forming—Part 1: Theoretical Analysis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An improved theoretical model for the hydrodynamic lubrication of axisymmetric, sheet metal stretch forming is presented. The infinite initial film thickness problem, encountered in a previous ...
Freezing Range Effect on Shell Growth Instability During Alloy Solidification
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: During metal casting, nonuniform thermal strains due to small spatial perturbations in the cooling profile may lead to a condition of growth instability. This condition is one where the metal ...
Owen Richmond 1928-2001
Publisher: The American Society of Mechanical Engineers (ASME)
Boundary Element Formulation for Thermal Stresses During Pulsed Laser Heating
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Pulsed lasers are used in a variety of materials processing applications that range from heating for metallurgical transformation to scribing vehicle identification numbers on anodized aluminum ...
Mold Surface Wavelength Effect on Gap Nucleation in Solidification
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A theoretical model that predicts the time and position of gap nucleation along the metal-shell interface during solidification of a pure metal on a sinusoidal mold surface is presented. The ...
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