Results 101 to 110 of about 91,631 (302)
Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V
Advanced Engineering Materials, EarlyView.Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena +2 more
wiley +1 more source
Radial Force Control of Switched Reluctance Motors
, 2014 由於12/8 磁阻馬達的凸極結構，使得馬達具有可以做徑向力控制的特性，但為了能同時產生轉矩與所需的徑向力，各極線圈必須可以獨立激磁。一般的SRM 會因為1）外加的偏心負載或2）轉子偏心，而使馬達產生不平衡的徑向立，導致震動的現象。為消除此一問題，本計畫以設計並製作一12/8 磁阻馬達，同時利用FEM 軟體分析徑向力變化的特性，根據馬達徑向力與力矩分析之結果，設計一弦波激磁的控制法則，經由此一法則激磁各極線圈可以產生所需的徑向力與輸出轉矩，並設計一套換相法則來降低換相所產生的震動 ...
楊勝明
core
Advanced Engineering Materials, EarlyView.The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu +8 more
wiley +1 more source
Effect of eccentricity on radial force production in bearingless motors
, 2007 In bearingless machines, an extra three-phase winding is added to the stator to allow the production and control of radial force acting on the rotor. The radial force analysis is normally carried out assuming the rotor is centred in the airgap.
Ertugrul, N. +2 more
core
In vitro evaluation of the radial and axial force of self-expanding esophageal stents
, 2013 Background and study aims: Technological innovation in esophageal stent design has progressed over the past decades, but the association between the mechanical properties of stent design and clinical outcome is still poorly understood.
Vleggaar, Frank +3 more
core +1 more source
Advanced Engineering Materials, EarlyView.New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold +2 more
wiley +1 more source
The centrifugal pump radial force reduction
, 2009 This diploma thesis deals with problematics of the radial force effect on the runner and possibilities of the force reduction. Some pump modifications were proposed and changes of radial force magnitude in reverse blocking state and optimal flow state ...
Koutný, Luděk
core
Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere
Advanced Engineering Materials, EarlyView.In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May +9 more
wiley +1 more source
Orbits in a generalized two-body problem
, 2003 The two-body problem is a well-known case of the general central force problem with an attractive, inverse square force. However, there are forms of spacecraft propulsion, such as solar sails and minimagnetospheric plasmapropulsion, which generate a ...
McInnes, C.R.
core
Advanced Engineering Materials, EarlyView.A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares +3 more
wiley +1 more source