Results 81 to 90 of about 389,170 (298)
Surface temperatures and glassy state investigations in tribology, part 3 [PDF]
Research related to the development of the limiting shear stress rheological model is reported. Techniques were developed for subjecting lubricants to isothermal compression in order to obtain relevant determinations of the limiting shear stress and ...
Bair, S., Winer, W. O.
core +2 more sources
Dynamic Analysis of UAV’s Motor Support Bar Length Control System [PDF]
, 2019 UAV (Unmanned Aerial Vehicle) can be described as aircraft that do not need any presence of pilots inside it. Basically, UAV is come out in a small aircraft sothat the aircraft can be easily controlled by the people from afar[1].
Bin Ibrahim, Zunaidi +5 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study investigates the effects of milling parameters, including rotational speed, milling duration, and ball‐to‐powder ratio, on TiAl particle size and morphology in an XHV‐equivalent atmosphere. The creation of oxide‐free surfaces enhances the mechanical properties of green bodies.
Jytte Möckelmann +4 more
wiley +1 more source
Teshugang, 2012 The effect of first roll and last roll position on plate flatness and surface residual stress of 22 mm Q345 steel plate (/% ： ≤0. 20C,≤ 0. 55Si, ≤1. 70Mn, 0. 02 - 0. 15V, 0. 015 ~ 0. 060Nb, 0. 02 ~ 0.
张焕军 +5 more
doaj
The Mechanism of Forming Hollow Shafts with Constant Wall Thickness by Three-Roll Skew Rolling
MetalsTo solve the problem of the long forming process for hollow shafts with constant wall thickness (HSCWT), a new process for forming HSCWT, namely three-roll skew rolling, has been proposed.
Song Zhang +8 more
doaj +1 more source
Stress calculation of Plate Rolling
Transactions of the Japan Society of Mechanical Engineers, 1949 圧延機の円〓ロールの圧延部における円弧を, 頂点の曲率半径がロール半径に等しき双曲線にて置き換え, ロール圧力σ, 圧延方向の応力σnおよびロ一ル而の摩擦力τを考慮に入れて力の平衡式を立て, これに最大せん断応力説による塑性変形條件を入れてパラメータ表現法によつて解を得た.ロール面と圧延素材間の相対速度の方向によつてτの方向は変り, ために生ずる2種の式に, 入口と出口とにおいてσn=0,相対速度=0の所にて両式のσnが等しき條件より未定数を定めた.終りに数値例題を附記して計算の経路を示した.
openaire +2 more sources
Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment
Advanced Engineering Materials, EarlyView.This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li +5 more
wiley +1 more source
Work Roll Cooling System Design Optimisation in Presence of Uncertainty [PDF]
, 2009 Organised by: Cranfield UniversityThe paper presents a framework to optimise the design of work roll based on the cooling performance. The framework develops Meta models from a set of Finite Element Analysis (FEA) of the roll cooling.
Azene, Y. T. +5 more
core
Advanced Engineering Materials, EarlyView.This plot compares experimental tensile stress–strain curves (with 4 different strain rates) and corresponding modelled curves (obtained using the optimised sets of Voce and Miller–Norton parameter values shown). The inferred M‐N values, characterizing the creep, are very similar to those obtained via conventional creep testing.
S. Ooi, R. P. Thompson, T. W. Clyne
wiley +1 more source
Turbulence in the highly restricted dynamics of a closure at second order: comparison with DNS
, 2014 S3T (Stochastic Structural Stability Theory) employs a closure at second order to obtain the dynamics of the statistical mean turbulent state. When S3T is implemented as a coupled set of equations for the streamwise mean and perturbation states ...
Constantinou, Navid C. +5 more
core +1 more source