材料期刊网

Smith Prediction Monitor AGC System Based on Fuzzy Self-tuning PID Control

SUN Jie , ZHANG Dian-hua

钢铁研究学报(英文版)

In accordance with the feature of pure delay in monitor AGC system for cold rolling mill, a new fuzzy self-tuning PID Smith prediction controller is developed. The position control model is deduced based on a single stand cold rolling mill, and the fuzzy controller for monitor AGC system is designed...

关键词: monitor AGC;fuzzy self-tuning PID control;Smith predictor;position control

Algorithm Design and Application of Laminar Cooling Feedback Control in Hot Strip Mill

LIU En-yang , ZHANG Dian-hua , SUN Jie , PENG Liang-gui , GAO Bai-hong , SU Li-tao

钢铁研究学报(英文版)

Abstract： Feedback control is one of the most important ways to improve coiling temperature control precision during laminar cooling process. Laminar cooling equipments of a hot strip mill and structure of the control system were introduced. Feedback control algorithm based on PI controller and that...

关键词: Key words: hot strip mill , laminar cooling , feedback control , Smith predictor , PI controller

钛等金属的SUN-Z-R复合技术

吴全兴

钛工业进展 doi:10.3969/j.issn.1009-9964.2001.02.008

关键词:

Comparison of Inconel 625 and Inconel 600 in resistance to cavitation erosion and jet impingement erosion

Nuclear Engineering and Design

Liquid droplet erosion (LDE), which often occurs in bellows made of nickel-based alloys, threatens the security operation of the nuclear power plant. As the candidate materials of the bellows, Inconel 600 and Inconel 625 were both tested for resistance to cavitation erosion (CE) and jet impingement ...

关键词: stress-corrosion cracking;aluminide intermetallic alloys;high-purity;water;mechanical-properties;crevice corrosion;solid particles;wear;behavior;microstructure;deformation;steam

Cavitation erosion and jet impingement erosion mechanism of cold sprayed Ni-Al(2)O(3) coating

Nuclear Engineering and Design

A composite coating was deposited on Inconel 600 substrate by cold spray method using pure Ni powder (60 wt.%) blended with alpha-Al(2)O(3) (40 wt.%) as feedstock. It is expected to be applied to repair the bellows eroded by the liquid droplet erosion (LDE). Microstructure of the coating was observe...

关键词: large powder particles;composite coatings;slurry erosion;kinetic;spray;liquid impact;alloy;microstructure;steels;deposition;resistance

CFRP双剪单钉连接接头强度分析

崔海涛 , 温卫东

宇航材料工艺 doi:10.3969/j.issn.1007-2330.2004.04.011

双剪连接接头是复合材料结构连接设计的主要环节.针对T300/KH304复合材料层合板的双剪连接形式,分析了单钉连接情况下的接头强度,并采用Yamada-Sun准则预测了该层合板结构双剪连接接头的破坏载荷.结果表明:该接头的破坏模式主要呈现...

关键词: 复合材料层合板 , 双剪连接接头 , 强度分析 , 有限元法

(1-x)Bi4Ti3O12-xSrBi2Nb2O9铋层状铁电陶瓷结构与性能研究

涂娜 , 江向平 , 李小红 , 傅小龙 , 杨帆

人工晶体学报

采用传统固相法制备了(1-x)Bi4Ti3 O12-xSrBi2 Nb2 O9(BIT-SBN,x=0,0.025,0.050,0.100,0.150,0.200)铋层状无铅压电陶瓷.系统研究了SrBi2 Nb2 O9掺杂对Bi4Ti3 O12基陶瓷物相结构、微观结构以及

关键词: Bi4Ti3O12 , SrBi2Nb2O9 , 铋层状 , 铁电陶瓷 , 介电性能

高压下合成气层流火焰传播特性的实验研究

周镇 , 艾育华 , 孔文俊

工程热物理学报

本文利用双腔泄压式定压燃烧弹,研究了高压下典型IGCC合成气的层流火焰传播特性,得到了不同压力(0.1～1 MPa)和不同当量比下(0.6～3.0)合成气的层流火焰传播速度和Markstein长度.实验结果表明,层流火焰传播速度随当量比先增加后减少,随压力的增加而减小.Davis和

关键词: 合成气 , 球形火焰 , 层流火焰传播速度 , Markstein长度

层流冷却过程低碳钢相变模型的适用性分析

程杰锋 , 唐广波 , 刘正东

钢铁研究学报

选取了现有典型的C-Mn钢相变过程的物理冶金模型,包括5组孕育期模型、7组相变动力学方程模型、5组相变后铁素体晶粒尺寸模型.利用自行开发的组织性能预报系统软件模拟计算了在3组实际冷却工艺条件下各模型的奥氏体转变过程,并对各模型进行了评价.结果表明,对于所设定的成分和工艺条件,适用性较好的孕育期模型是...

关键词: 孕育期 , 相变 , 适用性分析

拉压性能不同纤维增强复合材料的非线性本构模型

朱亮 , 肖毅

复合材料学报

为满足在工程应用中对建立拉压性能不同纤维增强复合材料的非线性本构理论的需要,考虑静水压影响的Drucker-Prager屈服准则与各向异性的Hill屈服准则相结合,提出了广义Hill屈服准则,并推广到Sun-Chen的单参数塑性模型中,建...

关键词: 单向复合材料 , 非线性响应 , 不同屈服强度 , 本构方程 , 偏轴拉伸-压缩载荷