Results 61 to 70 of about 119,906 (310)

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Numerical modelling of grinding in a stirred media mill: Hydrodynamics and collision characteristics [PDF]

, 2010
Producing nanoparticles in dense suspensions can be achieved in a stirred media mill. However the mechanisms of fragmentation in the mill are still not fully understood and the process remains laborious because of the large amount of supplied energy.
Anne-Archard, Dominique, Climent, Éric, Frances, Christine, Gers, Romain, Legendre, Dominique   +4 more
core   +2 more sources

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Simulation and Experimental Study of Multi-Particle Grinding Based on W-M Fractal Dimension

Machines
Extended operation in complex environments characterized by high temperatures, pressures, and hydrogen exposure can lead to performance degradation for S32168 stainless steel welds of hydrogenation reactors, which significantly impacts the reliability of
Shengfang Zhang, Zhiyi Leng, Qiang Duan, Mingjie Lu, Hongtao Gu, Ziguang Wang, Yu Liu   +6 more
doaj   +1 more source

Identification of the principal elements governing the wettability characteristics of ordinary Portland cement following high power diode laser surface treatment [PDF]

, 2003
The elements governing modifications to the wettability characteristics of ordinary Portland cement (OPC) following high power diode laser (HPDL) surface treatment have been identified.
Agarwala, Agathopoulos, Andrew, Bahners, Bahners, Borodina, Bourell, Cassie, Chattoraj, Fowkes, Good, Gutowski, Heitz, Henari, J Lawrence, Laurens, Laurens, Lawrence, Lawrence, Lawrence, Lawrence, Lawrence, Lawrence, Lawrence, Lawrence, Lawrence, Lawrence, Lawrence, Lawrence, Lawrence, Lawrence, Lawrence, Lawrence, Li, Neumann, Nicolas, Olfert, Palasantzas, Song, Song, Song, Sugita, Taylor, Ueki, Watanabe, Watanabe, Wenzel, Yoshizawa, Zhou, Zhou, Zhou, Zisman   +51 more
core   +1 more source

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source

Material removal mechanism in rotary in-feed grinding - Modeling and analysis -

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2020
The rotary in-feed grinding is the most promising process to ensure the controllability of wafer geometry including the thickness and flatness. This makes it be widely applied into manufacturing of mono-crystal wafers, such as silicon, silicon carbide ...
Wentong LU, Libo ZHOU, Jun SHIMIZU, Teppei ONUKI, Hirotaka OJIMA, Takeyuki YAMAMOTO   +5 more
doaj   +1 more source

The numerical evaluation of the grinding process and the basic mechanics of grinding wheel wear [PDF]

, 1965
During the production process development for the manufacture of an experimental supersonic aircraft , an unusual and difficult grinding problem was encountered.
Purcell, John
core  

Dental Microwear From Natufian Hunter-Gatherers and Early Neolithic Farmers: Comparisons Within and Between Samples [PDF]

, 2006
Microwear patterns from Natufian hunter-gatherers (12,500–10,250 bp) and early Neolithic (10,250–7,500 bp) farmers from northern Israel are correlated with location on facet nine and related to an archaeologically suggested change in food preparation ...
Baker, Bar Yosef, Bar Yosef, Bar Yosef, Bar Yosef, Bar Yosef, Blaeuer, Boyde, Bullington, Clutton-Brock, Colledge, Covert, Eisenmann, Eshed, Eshed, Every, Galil, Galil, Garfinkel, Garfinkel, Garrod, Gopher, Gordon, Gordon, Goring-Morris, Goring-Morris, Grine, Grine, Grine, Gügel, Harmon, Henry, Hershkovitz, Hershkovitz, Hershkovitz, Hillman, Hillman, Hopf, Kay, Kenyon, Khera, King, Lalueza, Lalueza, Legge, Lucas, Macho, Mahoney, Mahoney, Maier, Martin, Mellaart, Mills, Molleson, Molleson, Moore, Moss-Salentijn, Norusis, Norusis, Noy, Noy, Noy, Noy, Nystrom, Pastor, Perrot, Perrot, Peters, Piperno, Pough, Puech, Puech, Puech, Pérez-Pérez, Pérez-Pérez, Rensberger, Rensberger, Robson, Rollefson, Ryan, Schmidt, Sillen, Sillen, Smith, Smith, Smith, Steckelis, Strait, Tabachnick, Teaford, Teaford, Teaford, Teaford, Teaford, Teaford, Teaford, Teaford, Teaford, Teaford, Ungar, Ungar, Ungar, Ungar, Ungar, Ungar, Valla, Walker, Walker, Walker, Walker, Willcox, Willcox, Wright, Zar   +113 more
core   +1 more source

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

Advanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost, Lionel Presmanes, Soléna Colin, Marie Vidal, Sophie Guillemet‐Fritsch   +4 more
wiley   +1 more source