New antiscatter grid design by optimization of strip thickness and height

2020 ◽  
Author(s):  
Abel Zhou ◽  
Qi Tan ◽  
Graeme L. White ◽  
Rob Davidson
Keyword(s):  
Strip Thickness ◽  
Grid Design ◽  
Antiscatter Grid

Exploration on armored equipment materiel support grid design

2017 ◽  
Vol 22 (5) ◽  
pp. 602-608
Author(s):  
Xueqiang Yang ◽  
Wenjun Li ◽  
Jun Huang ◽  
Jing Huang
Keyword(s):  
Grid Design ◽  
Support Grid

scholarly journals Reliability-Based Topology Optimization Using Stochastic Response Surface Method with Sparse Grid Design

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Qinghai Zhao ◽  
Xiaokai Chen ◽  
Zheng-Dong Ma ◽  
Yi Lin
Keyword(s):  
Topology Optimization ◽  
Reliability Analysis ◽  
Response Surface ◽  
Response Surface Method ◽  
Computational Efficiency ◽  
Sparse Grid ◽  
Stochastic Response ◽  
Stochastic Response Surface Method ◽  
Surface Method ◽  
Grid Design

A mathematical framework is developed which integrates the reliability concept into topology optimization to solve reliability-based topology optimization (RBTO) problems under uncertainty. Two typical methodologies have been presented and implemented, including the performance measure approach (PMA) and the sequential optimization and reliability assessment (SORA). To enhance the computational efficiency of reliability analysis, stochastic response surface method (SRSM) is applied to approximate the true limit state function with respect to the normalized random variables, combined with the reasonable design of experiments generated by sparse grid design, which was proven to be an effective and special discretization technique. The uncertainties such as material property and external loads are considered on three numerical examples: a cantilever beam, a loaded knee structure, and a heat conduction problem. Monte-Carlo simulations are also performed to verify the accuracy of the failure probabilities computed by the proposed approach. Based on the results, it is demonstrated that application of SRSM with SGD can produce an efficient reliability analysis in RBTO which enables a more reliable design than that obtained by DTO. It is also found that, under identical accuracy, SORA is superior to PMA in view of computational efficiency.

Machine Learning for VLSI CAD: A Case Study in On-Chip Power Grid Design

2021 ◽  
Author(s):  
Sukanta Dey ◽  
Sukumar Nandi ◽  
Gaurav Trivedi
Keyword(s):  
Machine Learning ◽  
Power Grid ◽  
Vlsi Cad ◽  
Grid Design ◽  
On Chip

Casting of Al-Mg Strip Using Single Roll Caster Equipped with a Scraper

2021 ◽  
Vol 880 ◽  
pp. 49-56
Author(s):  
Toshio Haga ◽  
Kosuke Tsukuda ◽  
Keisuke Oida ◽  
Hisaki Watari ◽  
Shinichi Nishida
Keyword(s):  
Molten Metal ◽  
Thickness Distribution ◽  
Surface Characteristics ◽  
Strip Thickness ◽  
Optimal Conditions ◽  
Roll Speed ◽  
Pouring Temperature ◽  
Strip Cast ◽  
Cold Rolled ◽  
Twin Roll

A scraper was attached to an unequal-diameter twin-roll caster without requiring large modifications. This caster was used as a 1000 mm diameter single roll caster equipped with a scraper, and its strip casting ability was tested. The effects of the scraper angle and load, the roll speed, and the pouring temperature of the molten metal on the scribed surface, thickness distribution and average strip thickness were investigated. The scribed surface characteristics were sound and the thickness distribution was flat when the scraper angle was 60° and the scraper load was in the range of 1 to 4 kg. When the scraper load was more than 1 kg, the thickness distribution was uneven. The average strip thickness decreased as the roll speed increased. The pouring temperature of the molten metal influenced the evenness of the solidified layer thickness. The solidified layer became even as the molten metal temperature was decreased. A strip cast with the determined optimal conditions was then cold rolled down to 1 mm to improve its surface quality.

Design of Entry Strip Thickness Controls for Tandem Cold Mills

1976 ◽  
Vol 9 (5) ◽  
pp. 607-616
Author(s):  
W. John Edwards
Keyword(s):  
Strip Thickness

A Study of the Optimal Answer Sheet Identification Grid Design

AEDS Journal ◽  
1978 ◽  
Vol 11 (4) ◽  
pp. 118-121
Author(s):  
Peter Wolmut
Keyword(s):  
Answer Sheet ◽  
Grid Design

Improved image quality of cone beam CT scans for radiotherapy image guidance using fiber-interspaced antiscatter grid

2014 ◽  
Vol 41 (6Part1) ◽  
pp. 061910 ◽  
Author(s):  
Uros Stankovic ◽  
Marcel van Herk ◽  
Lennert S. Ploeger ◽  
Jan-Jakob Sonke
Keyword(s):  
Image Quality ◽  
Image Guidance ◽  
Cone Beam Ct ◽  
Ct Scans ◽  
Cone Beam ◽  
Antiscatter Grid

Ti STRIP PROPERTIES FABRICATED BY POWDER ROLLING METHOD

2010 ◽  
Vol 17 (02) ◽  
pp. 229-234 ◽  
Author(s):  
JAE-KEUN HONG ◽  
CHAE-HUN LEE ◽  
JEOUNG-HAN KIM ◽  
JONG-TAEK YEOM ◽  
NHO-KWANG PARK
Keyword(s):  
Rolling Speed ◽  
Strip Thickness ◽  
Roll Speed ◽  
Powder Morphology ◽  
Rolling Method ◽  
Edge Cracks ◽  
Roll Compaction ◽  
Ti Powder ◽  
Roll Gap ◽  
Size Powder

In the present study, the characteristics of the Ti powders fabricated by Hydride–Dehydride (HDH) were analyzed in terms of particle shape, size and size distribution. Ti powders were subjected to roll compaction and their microstructure and green densities were evaluated in terms of particle size, powder morphology, roll gap and rolling speed. Effects of blending elements having different powder sizes on densification properties were analyzed. The strip thickness was proportional to the roll gap up to 0.9 mm and the density of titanium strip was decreased with the increase in roll gap. As the roll speed increased, the strip density and thickness were decreased by using -200 mesh Ti powder. However, the effect of rolling speed for -400 mesh Ti powder was not greater than that of -200 mesh powder. The highest density by 93% was achieved by using -400 mesh Ti powder at 0.1 mm roll gap, however edge cracks and alligator cracks were occurred.

Bi-Directional Nano Grid Design for Organizations with Plug-In Electric Vehicle Charging at Workplace

2018 ◽  
Author(s):  
Muhammad Jawad ◽  
Muhammad Bilal Qureshi ◽  
Ahsan Nadeem ◽  
Sahibzada Muhammad Ali ◽  
Noman Shabbir ◽  
...  
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicle Charging ◽  
Grid Design ◽  
Vehicle Charging
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