Optimum Dimension of Crossed Field Antenna (CFA) Using the Quasi Static Scheme

2012 ◽  
Author(s):  
Shaghayegh Gomar ◽  
Seyed Vahab Al-Din Maki ◽  
Shahpour Alirezaee
Keyword(s):  
Optimum Dimension

An Optimality Criterion for the Structural Optimization of Machine Elements

2005 ◽  
Vol 127 (3) ◽  
pp. 415-423 ◽  
Author(s):  
C.-P. Teng ◽  
J. Angeles
Keyword(s):  
Structural Optimization ◽  
Optimality Criterion ◽  
Mass Reduction ◽  
Speed Reduction ◽  
Optimum Dimension ◽  
Novel Approach ◽  
Cam Follower ◽  
Machine Elements ◽  
A Current

Methods of structural optimization have been studied and developed over the last three decades. An important aspect of structural optimization pertains to the condition under which the loads are applied. Most machine structures in operation are subject to loads varying as functions of time. In this paper, a novel approach is proposed to cope with loads whose magnitudes vary within given bounds and with variable directions. The underlying ideas are applied to the structural optimization of the roller-carrying disk of a novel class of cam-follower speed reduction devices termed Speed-o-Cam (SoC). Results obtained in this paper are compared with a current prototype and with an intermediate design in which the dimensions of the roller pins are optimized. Combined with the optimum dimension of the roller pins, our structural-optimization results lead to an improvement of almost twice the stiffness with a mass reduction of 40% of the original prototype.

scholarly journals The Fabrication and Indentation of Cubic Silicon Carbide Diaphragm for Acoustic Sensing

Micromachines ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1101
Author(s):  
Siti Aisyah Zawawi ◽  
Azrul Azlan Hamzah ◽  
Burhanuddin Yeop Majlis ◽  
Faisal Mohd-Yasin
Keyword(s):  
Silicon Carbide ◽  
Plastic Deformation ◽  
Elastic Behaviour ◽  
Maximum Pressure ◽  
Acoustic Sensors ◽  
Si Substrate ◽  
Optimum Dimension ◽  
Two Samples ◽  
Low Load ◽  
Cubic Silicon Carbide

In this study, 550 nm thick cubic silicon carbide square diaphragms were back etched from Si substrate. Then, indentation was carried out to samples with varying dimensions, indentation locations, and loads. The influence of three parameters is documented by analyzing load-displacement curves. It was found that diaphragms with bigger area, indented at the edge, and low load demonstrated almost elastic behaviour. Furthermore, two samples burst and one of them displayed pop-in behaviour, which we determine is due to plastic deformation. Based on optimum dimension and load, we calculate maximum pressure for elastic diaphragms. This pressure is sufficient for cubic silicon carbide diaphragms to be used as acoustic sensors to detect poisonous gasses.

Nonfree Space Radiating Fin Optimum Dimension and Efficiency Correlations

2005 ◽  
Vol 42 (1) ◽  
pp. 187-191
Author(s):  
C. K. Krishnaprakas ◽  
K. Badari Narayana
Keyword(s):  
Optimum Dimension

Experimental investigation and flow visualization to determine the optimum dimension range of microgap heat sinks

2012 ◽  
Vol 55 (25-26) ◽  
pp. 7623-7634 ◽  
Author(s):  
Tamanna Alam ◽  
Poh Seng Lee ◽  
Christopher R. Yap ◽  
Liwen Jin ◽  
K. Balasubramanian
Keyword(s):  
Experimental Investigation ◽  
Flow Visualization ◽  
Heat Sinks ◽  
Optimum Dimension

scholarly journals Determination of Optimum Dimension for the High Radioactive Waste Storage Container

2014 ◽  
Vol 26 (13) ◽  
pp. 4049-4051 ◽  
Author(s):  
Geun-Ho Kim ◽  
Jong-Hwan Lee ◽  
Kwan-Seong Jeong ◽  
Dongjun Hyun ◽  
Byung-Seon Choi ◽  
...  
Keyword(s):  
Radioactive Waste ◽  
Storage Container ◽  
Optimum Dimension ◽  
Waste Storage ◽  
Radioactive Waste Storage
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