On calculations of basic structural parameters in multi-principal element alloys using small atomistic models

2022 ◽  
Vol 202 ◽  
pp. 110942
Author(s):  
Shuozhi Xu ◽  
Saeed Zare Chavoshi ◽  
Yanqing Su
Keyword(s):  
Structural Parameters ◽  
Principal Element ◽  
Atomistic Models

scholarly journals Exploring the Phase Space of Multi-Principal-Element Alloys and Predicting the Formation of Bulk Metallic Glasses

Entropy ◽  
2020 ◽  
Vol 22 (3) ◽  
pp. 292 ◽  
Author(s):  
Mirko Gabski ◽  
Martin Peterlechner ◽  
Gerhard Wilde
Keyword(s):  
Cooling Rate ◽  
Metallic Glasses ◽  
Random Number ◽  
Structural Parameters ◽  
Random Number Generator ◽  
Bulk Metallic Glasses ◽  
Computational Method ◽  
Principal Element ◽  
Critical Cooling Rate ◽  
Glass Forming

Multi-principal-element alloys share a set of thermodynamic and structural parameters that, in their range of adopted values, correlate to the tendency of the alloys to assume a solid solution, whether as a crystalline or an amorphous phase. Based on empirical correlations, this work presents a computational method for the prediction of possible glass-forming compositions for a chosen alloys system as well as the calculation of their critical cooling rates. The obtained results compare well to experimental data for Pd-Ni-P, micro-alloyed Pd-Ni-P, Cu-Mg-Ca, and Cu-Zr-Ti. Furthermore, a random-number-generator-based algorithm is employed to explore glass-forming candidate alloys with a minimum critical cooling rate, reducing the number of datapoints necessary to find suitable glass-forming compositions. A comparison with experimental results for the quaternary Ti-Zr-Cu-Ni system shows a promising overlap of calculation and experiment, implying that it is a reasonable method to find candidates for glass-forming alloys with a sufficiently low critical cooling rate to allow the formation of bulk metallic glasses.

Analysis and Optimization of Magnetic Energy Converters for Wireless Sensors in Substation

2012 ◽  
Vol 229-231 ◽  
pp. 1068-1071
Author(s):  
Yan Cheng ◽  
Jin Xin Huang ◽  
Chun Hui Yu ◽  
Li Zhang
Keyword(s):  
Wireless Sensors ◽  
Solution Method ◽  
Magnetic Energy ◽  
Structural Parameters ◽  
Wireless Sensor ◽  
Field Energy ◽  
Energy Scavenging ◽  
Energy Converter ◽  
Principal Element ◽  
Magnetic Field Energy

With the development of wireless sensor networks, energy supplying problem become critical. However, energy scavenging technology provides an efficient solution method, and it is the principal element for wireless sensors to facilitate on-site self-powering. A magnetic energy converter which can convert magnetic field energy to power is proposed when there is sufficient magnetic energy in substations. By modeling this converter, the inductive factor was defined to present energy harvesting capability and optimization was realized in terms of framework material, structural parameters and turns of coils. The research results present theoretical basis for optimal design of the energy scavenging devices.

Optimal design of a high homogeneous and small-size shim coil for atomic spin gyroscope based on 0-1 linear programming

2020 ◽  
Vol 64 (1-4) ◽  
pp. 165-172
Author(s):  
Dongge Deng ◽  
Mingzhi Zhu ◽  
Qiang Shu ◽  
Baoxu Wang ◽  
Fei Yang
Keyword(s):  
Linear Programming ◽  
Power Consumption ◽  
Low Power ◽  
Optimization Design ◽  
Structural Parameters ◽  
Axial Position ◽  
Low Power Consumption ◽  
Optimal Method ◽  
Atomic Spin ◽  
Shim Coil

It is necessary to develop a high homogeneous, low power consumption, high frequency and small-size shim coil for high precision and low-cost atomic spin gyroscope (ASG). To provide the shim coil, a multi-objective optimization design method is proposed. All structural parameters including the wire diameter are optimized. In addition to the homogeneity, the size of optimized coil, especially the axial position and winding number, is restricted to develop the small-size shim coil with low power consumption. The 0-1 linear programming is adopted in the optimal model to conveniently describe winding distributions. The branch and bound algorithm is used to solve this model. Theoretical optimization results show that the homogeneity of the optimized shim coil is several orders of magnitudes better than the same-size solenoid. A simulation experiment is also conducted. Experimental results show that optimization results are verified, and power consumption of the optimized coil is about half of the solenoid when providing the same uniform magnetic field. This indicates that the proposed optimal method is feasible to develop shim coil for ASG.

A Possible Basis for Nondestructive Characterization of Ropes of Nylon 6

1997 ◽  
Vol 503 ◽  
Author(s):  
H. Jiang ◽  
M. K. Davis ◽  
R. K. Eby ◽  
P. Arsenovic
Keyword(s):  
Tensile Strength ◽  
Service Life ◽  
Fiber Diameter ◽  
Structural Parameters ◽  
Crystal Form ◽  
Nylon 6 ◽  
Remaining Service Life ◽  
Nondestructive Characterization ◽  
Fractional Content

ABSTRACTPhysical properties and structural parameters have been measured for ropes of nylon 6 as a function of the number of use operations. The fractional content of the α crystal form, sound velocity, birefringence, tensile strength and length all increase systematically and significantly with increasing the number of use operations. The fractional content of the γ crystal form and fiber diameter decrease with use. These trends indicate that the measurement of such properties and structural parameters, especially the length, provide a possible basis for establishing a reliable, rapid, and convenient nondestructive characterization method to predict the remaining service life of nylon 6 ropes.

Structural Parameters of Bacterial Plankton in Ponds with High Contents of Mineral Nitrogen

2007 ◽  
Vol 43 (5) ◽  
pp. 91-100
Author(s):  
Ye. V. Starosila ◽  
G. N. Oleynik ◽  
Yu. G. Krot
Keyword(s):  
Structural Parameters ◽  
Mineral Nitrogen
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