Results 71 to 80 of about 221,637 (307)

Sub-surface damage issues for effective fabrication of large optics [PDF]

, 2008
A new ultra precision large optics grinding machine, BoX®has been developed at Cranfield University. BoX®islocated at the UK's Ultra Precision Surfaces laboratory at the OpTIC Technium.
, , A. Baldwin, D. Walker, G. Yu, P. Morantz, P. Shore, R. Evans, X. Tonnellier   +8 more
core   +1 more source

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, Benjamin Bergmann, Michael Zenger   +2 more
wiley   +1 more source

Controllable selective exfoliation of high-quality graphene nanosheets and nanodots by ionic liquid assisted grinding

, 2012
Bulk quantities of graphene nanosheets and nanodots have been selectively fabricated by mechanical grinding exfoliation of natural graphite in a small quantity of ionic liquids.
Blackley, Ross, Li, Meixian, Lubarsky, Gennady, McNeill, David W., Papakonstantinou, Pagona, Quinn, Aidan J., Shang, Nai Gui, Sharma, Surbhi, Zhou, Wuzong   +8 more
core   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

External grind-hardening forces modelling and experimentation [PDF]

, 2013
Grind hardening process utilizes the heat generated in the grinding area for the surface heat treatment of the workpiece. The workpiece surface is heated above the austenitizing temperature by using large values of depth of cut and low workpiece feed ...
Kolios, Athanasios, Salonitis, Konstantinos, Stavropoulos, Panagiotis   +2 more
core   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

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, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source

Temperature Field Analysis of Grinding Face Gear

Jixie chuandong, 2019
The principal directions and corresponding curvatures at grinding point on face gear tooth surface are derived according to meshing theory and differential geometry theory.
Ning Zhao, Jia Zhai, Shaojie Hou, Qian Yang, Tao Yang   +4 more
doaj  

Thermo-mechanical Coupling Simulation Analysis of Cycloid Gear Multi-tooth Form Grinding

Jixie chuandong, 2020
The cycloid gear multi-tooth form grinding is a gear finishing process，which can finish the processing of three tooth grooves at same time.In the process of high-speed grinding，high temperature will arise on the gear surface instantaneously，which may ...
Shi Enbing, Su Jianxin, Zhang Lifang, Deng Xiaozhong, Ren Xiaozhong, Cheng Chen   +5 more
doaj  

Molecular Dynamics Study of the Effect of Abrasive Grains Orientation and Spacing during Nanogrinding

Micromachines, 2020
Grinding at the nanometric level can be efficiently employed for the creation of surfaces with ultrahigh precision by removing a few atomic layers from the substrate. However, since measurements at this level are rather difficult, numerical investigation
Nikolaos E. Karkalos, Angelos P. Markopoulos   +1 more
doaj   +1 more source

Method for making a hot wire anemometer and product thereof [PDF]

, 1977
A hot wire anemometer probe is described that includes a ceramic body supporting two conductive rods parallel to each other. The body has a narrow edge surface from which the rods protrude.
Milkulla, V.
core   +1 more source