Results 301 to 310 of about 8,179,783 (370)

A theoretical study of the mechanism with variable compression ratio and expansion ratio

Mechanics Based Design of Structures and Machines, 2017
ABSTRACTIn recent years, due to global energy crisis, many governments have reduced emission of carbon dioxide by regulations, which make improving efficiency of engines an important topic. Carmakers have focused on an energy-saving measure called variable compression ratio (VCR) because it suits related technologies with high efficiency easily.
Shu Yang, Jiansheng Lin
openaire   +2 more sources

Effects of Expansion Ratio and Reynolds Number on Backward-Facing Step Flow with Large Expansion Ratio

The Proceedings of Mechanical Engineering Congress, Japan, 2019
Takeshi IGATASHI, Ryosuke ITO, Masatoshi SANO   +2 more
openaire   +2 more sources

Microcellular PETs with High Expansion Ratio Produced by Supercritical CO2 Molding Compression Foaming Process and Their Mechanical Properties

Advanced Engineering Materials, 2021
Supercritical CO2 molding compression foaming is an emerging technology for preparing thick microcellular polymer sheets. In a temperature range of 245–255 °C and CO2 foaming pressure range of 5–20 MPa, the molding compression foaming behavior of ...
Yichong Chen, Shun Yao, Yijie Ling, Wenyu Zhong, D. Hu, Ling Zhao   +5 more
semanticscholar   +1 more source

Effect of Expansion Ratio and Wall Thickness on Large-Diameter Solid Expandable Tubular After Expansion

, 2021
The large-diameter solid expandable tubular (SET) with a smaller wall thickness faces the risk of internal pressure burst and external squeeze collapse in repairing damaged casing well.
C. Shi, Kailin Chen, Xiaohua Zhu, Feilong Cheng, Yuekui Qi, Jia-nan Li   +5 more
semanticscholar   +1 more source

A Preliminary Study of Ada Expansion Ratios

Journal of Parametrics, 1986
Since the mandate (DoDD 5001.31) requiring the use of the Ada language in all mission critical software, a need for revised expansion ratios for estimating Ada software has emerged. This paper describes a study to determine a set of preliminary Ada expansion ratios. Three classes of Ada programming features were identified during this study.
James V. Chelini, Edmund B. Hudson, Stephen M. Reidy   +2 more
openaire   +1 more source

Phytochemicals, chlorophyll pigments, antioxidant activity, relative expansion ratio, and microstructure of dried okra pods: swell-drying by instant controlled pressure drop versus conventional shade drying

Drying Technology, 2020
This study is aimed at comparing swell drying versus conventional shade drying and optimizing the texturing by instant controlled pressure drop (DIC) of green okra pods.
S. Mounir, A. Ghandour, C. Téllez-Pérez, A. Aly, A. Mujumdar, K. Allaf   +5 more
semanticscholar   +1 more source

OPTIMUM EXPANSION RATIO OF CASTELLATED STEEL BEAMS

Engineering Optimization, 1975
Abstract In this paper, the authors present a numerical analysis for the optimum expansion ratio based on the elastic as well as the plastic method of analysis. The elastic analysis program is based on an iterative process and involves the calculation of allowable loads corresponding to potentially critical flexural and shear stresses at each increment
A. R. GALAMBOS, M. U. HOSAIN, W. G. SPEIRS   +2 more
openaire   +1 more source

RESPONSE SURFACE METHODOLOGY OF FOAMED BITUMEN EXPANSION RATIO

International Journal of Heat and Technology, 2015
Haiying Cheng, Zhiyong Hu, Lei Jia
openaire   +2 more sources

The limiting expansion ratio of real materials

Steel Research, 1985
The production of the precut hole was by drilling, turning and finishing. Subsequently, the edges of the hole were polished in order to prevent, as far as possible, any hardening of the edges and also to produce an idealised surface.This procedure is necessary since the effect of the surface quality of the hole edge on the expansion ratio is greater ...
Josef Reissner, Heinrich Weigl
openaire   +1 more source

Effect of Expansion Ratio on Formability in Tube Drawing with Diameter Expansion

2021
Conventional tube drawing methods have the disadvantage that thickness reduction in one pass is small. This paper proposed a tube drawing method for overcoming this disadvantage, and the method expands the diameter at the same time of drawing. At first, the tube is flared by pushing the plug into the tube end.
H. Kawaguchi, T. Kuboki, I. Akasaka, Y. Terashita, M. Akiyama, S. Kajikawa   +5 more
openaire   +1 more source