Results 21 to 30 of about 16,330 (207)

Effect of lapping pressure on surface quality of polycrystalline diamond

Jin'gangshi yu moliao moju gongcheng
ObjectivesPolycrystalline diamond (PCD), as a superhard material with high hardness, high wear resistance, and good impact toughness, has a wide range of applications in fields such as cutting tools for superhard materials.
Guodong SUN, Weicui LI, Jinzhao HU, Shuqiang LI, Shutao HUANG   +4 more
doaj   +3 more sources

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

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

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Morphology, Microstructure Evolution and Properties of Resin-Bonded Palm Kernel and Coconut Shell Grain-Based Abrasive Grinding

Nigerian Journal of Technological Development, 2023
This study examined the morphology and microstructural evolution of resin-bonded palm kernel and coconut shell grain-based abrasive grinding wheels and their physico-mechanical and tribological properties.
Avidime SAMUEL, AbdulBasit SULAIMAN, Habeeb AJIMOTOKAN, Segun IBITOYE, Tajudeen AJIBOYE, Temitayo OGEDENGBE, Ismaila ALABI   +6 more
doaj  

Effect of Heating Rate of Torrefaction of Sugarcane Bagasse on its Physical Characteristics

International Journal of Technology, 2015
Torrefaction, which is used to improve the properties of sugarcane bagasse as fuel in pulverised fuel combustion and as carbon feed in gasification, is a low heating rate pyrolysis of biomass carried out at a temperature of 200–300oC, at an ...
Dijan Supramono, Yosephine Merry Devina, Dewi Tristantini   +2 more
doaj   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Selective Extraction of ω-3 Fatty Acids from Nannochloropsis sp. Using Supercritical CO₂ Extraction

Molecules, 2019
In this article, microalgae Nannochloropsis sp. was used for fatty acid (FA) extraction, using a supercritical fluid-carbon dioxide (SF-CO2) extraction method.
Gian Paolo Leone, Roberto Balducchi, Sanjeet Mehariya, Maria Martino, Vincenzo Larocca, Giuseppe Di Sanzo, Angela Iovine, Patrizia Casella, Tiziana Marino, Despina Karatza, Simeone Chianese, Dino Musmarra, Antonio Molino   +12 more
doaj   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

An adaptive electropneumatic end effector for constant force robot grinding with steel wire brush

Advances in Mechanical Engineering
This article introduces the design of a robot end effector, which can perform constant force grinding on a curved surface using a brush tool without accurately measuring the geometric data of the workpiece.
Chosei Rei, Qiang Wang, Xinhua Yan, Liwei Fu, Peng Zhang, Chong Wang   +5 more
doaj   +1 more source