نتایج جستجو برای: microstructure optimization

تعداد نتایج: 357560  

2003
A.J. Kearsley L. A. Melara

Developing numerical methods for predicting microstructure in materials is a large and important research area. Two examples of material microstructures are Austenite and Martensite. Austenite is a microscopic phase with simple crystallographic structure while Martensite is one with a more complex structure. One important task in materials science is the development of numerical procedures whic...

2017
Xin Xue António B. Pereira José Amorim Juan Liao

Of particular importance and interest are the effects of pulsed Nd:YAG laser beam welding parameters on penetration and microstructure characterization of DP1000 butt joint, which is widely used in the automotive industry nowadays. Some key experimental technologies including pre-welding sample preparation and optimization design of sample fixture for a sufficient shielding gas flow are perform...

2016
B.R. Bharath Kumar Mrityunjay Doddamani Steven E. Zeltmann Nikhil Gupta Seeram Ramakrishna

The data set presented is related to the tensile behavior of cenosphere reinforced high density polyethylene syntactic foam composites "Processing of cenosphere/HDPE syntactic foams using an industrial scale polymer injection molding machine" (Bharath et al., 2016) [1]. The focus of the work is on determining the feasibility of using an industrial scale polymer injection molding (PIM) machine f...

Journal: :NeuroImage 2015
Alessandro Daducci Erick Jorge Canales-Rodríguez Hui Zhang Tim B. Dyrby Daniel C. Alexander Jean-Philippe Thiran

Microstructure imaging from diffusion magnetic resonance (MR) data represents an invaluable tool to study non-invasively the morphology of tissues and to provide a biological insight into their microstructural organization. In recent years, a variety of biophysical models have been proposed to associate particular patterns observed in the measured signal with specific microstructural properties...

2012
M. Schneider C. Heisser

In the production of aluminum castings, alloy composition, metallurgy, and local solidification conditions determine the distribution of microstructure and defects. The local distributions of microstructure and defects have a defining impact on the mechanical properties. This paper will present an overview of new options to simulate the local microstructure in casting processes and throughout t...

2004
Shankar Ganapathysubramanian Nicholas Zabaras

The idea of control of mechanical properties in materials through designer processing techniques is promoted through this effort, in contrast to the standard control by alloying. Microstructure evolution through dynamic recrystallization is accurately modelled for the large thermo-mechanical deformation of hyperelastic thermoviscoplastic materials. An innovative solution strategy and a computat...

Journal: :CoRR 2017
Fan Ye Hu Wang

Multiscale optimization is an attractive research field recently. For the most of optimization tools, design parameters should be updated during a close loop. Therefore, a simple Python code is programmed to obtain effective properties of Representative Volume Element (RVE) under Periodic Boundary Conditions (PBCs). It can compute the mechanical properties of a composite with a periodic structu...

2003
Jianhui Luo Hae Chang Gea

A topology optimization based approach is proposed to study the optimal configuration of stiffeners for the interior sound reduction. Since our design target is aimed at reducing the low frequency noise, a coupled acoustic-structural conservative system without damping effect is considered. Modal analysis method is used to evaluate the interior sound level for this coupled system. To formulate ...

2009
Pierre DUYSINX Michael BRUYNEEL Claude FLEURY

The function g0 is the objective function of the problem, i.e. a cost function or a performance index that has to be minimized in order to have a better design. In topology optimization, this is for instance the compliance of the structure under the considered load case. The set of constraint functions gj (in number m) expresses the restrictions the design is subject to in order to be feasible....

Journal: :Entropy 2016
Anna M. Manzoni Sheela Singh Haneen M. Daoud Robert Popp Rainer Völkl Uwe Glatzel Nelia Wanderka

The most commonly investigated high entropy alloy, AlCoCrCuFeNi, has been chosen for optimization of its microstructural and mechanical properties by means of compositional changes and heat treatments. Among the different available optimization paths, the decrease of segregating element Cu, the increase of oxidation protective elements Al and Cr and the approach towards a γ-γ1 microstructure li...

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