Results 1 to 10 of about 515,838 (299)

Optimization of micro tool geometry for ballpoint pen tip production using finite element simulation and orthogonal experiments [PDF]

Scientific Reports
Micro-drilling in ballpoint pen tip production faces persistent challenges of tool wear and premature breakage, which limit manufacturing efficiency and dimensional accuracy. In this study, an integrated framework combining finite element simulation (FEM)
Yaxuan Bi, Liangjie Tu, Xin Li, Shuai Zhao   +3 more
doaj   +2 more sources

Wettability, Tribology, Degradation, and Topography of Laser-Textured Surfaces of Biopolymers [PDF]

Micromachines
Surface texturing involves creating micro-channels, micro-dimples, micro-grooving, and other surface modifications. To do this, laser and micromachining are employed on the substrate surface in addition to other methods.
Ciprian-Dumitru Ciofu, Petronela-Daniela Rusu (Ostahie), Marcin Adamiak, Oktawian Bialas, Catalin Tampu, Panagiotis Kyratsis, Anastasios Tzotzis, Simona-Nicoleta Mazurchevici, Alexandra Nedelcu, Zhengyi Jiang, Daniel Mindru, Dumitru Nedelcu   +11 more
doaj   +2 more sources

Mathematical Models of the Geometry of Micro Milling Cutters [PDF]

EPJ Web of Conferences, 2021
Micromachining is an up-to-date technology widely used in different advanced areas like electronics, aerospace and medical industries. For manufacturing components with highest precision and lowest surface roughness, small-sized end mills with working ...
Isaev Alexander, Khamzin Ramil, Ershov Artem, Leonesio Marco   +3 more
doaj   +1 more source

Experimental Investigation on the Effect of Different Micro-Geometries on Cutting Edge and Wiper Edge on Surface Roughness and Forces in Face Milling

Lubricants, 2021
The significance of the micro-geometries on the cutting edge is known from numerous studies conducted in the past. However, the effect of micro-geometry on the wiper facet (also called the wiper edge) is not known.
Padmakumar Muthuswamy, Sathish Kumar Nagarajan   +1 more
doaj   +1 more source

Step-By-Step Modeling and Demetallation Experimental Study on the Porous Structure in Zeolites

Molecules, 2022
The organization of microporous space in zeolites is discussed. A new step-by-step model is proposed that explains the principles of organizing the hierarchy of microporous space at the stage of assembling zeolites from elements of minimal size: a ...
Pavel Kononov, Irina Kononova, Vyacheslav Moshnikov, Evgeniya Maraeva, Olga Trubetskaya   +4 more
doaj   +1 more source

The Architectonics Features of Heterostructures for IR Range Detectors Based on Polycrystalline Layers of Lead Chalcogenides

Crystals, 2021
A model is developed for the formation of porous intragranular architectonics of nanostructured polycrystalline layers of lead chalcogenides for photodetectors and IR emitters.
Yuliya Mikhailovna Spivak, Irina Evgen’evna Kononova, Pavel Vasil’evich Kononov, Vyacheslav Alexeyevich Moshnikov, Sergey Anatol’evich Ignat’ev   +4 more
doaj   +1 more source

Angular Rolling of the Hollow Flanges of Pipe Joints

Metals, 2021
The paper considers a three-stage technology for angular rolling of the pipe workpiece. This technology facilitates the expansion of the range of flange parts available by eliminating a number of drawbacks of the known methods of metal forming.
Pavel Kononov, Sergey Ignatiev, Dmitry Levashov, Irina Kononova   +3 more
doaj   +1 more source

SnO₂-Based Porous Nanomaterials: Sol-Gel Formation and Gas-Sensing Application

Gels, 2023
Porous nanocomposites using two (tin dioxide–silica dioxide) and three (tin dioxide–indium oxide-silica dioxide)-component systems for gas sensors were created with the sol–gel method.
Irina Kononova, Vyacheslav Moshnikov, Pavel Kononov   +2 more
doaj   +1 more source

Using terrestrial LiDAR to accurately measure the microgeomorphologic geometry of active fault: A case study of fault scarp on the Maoyaba fault zone

Dizhi lixue xuebao, 2021
The micro-geomorphologic geometry of active fault is often complex due to the natural dynamics, such as high degree of sedimentation and erosion, and man-made activities.
ZHANG Di, LI Jiacun, WU Zhonghai, LIU Shaotang, LU Yan   +4 more
doaj   +1 more source

Porous Geometry Guided Micro-mechanical Environment Within Scaffolds for Cell Mechanobiology Study in Bone Tissue Engineering

Frontiers in Bioengineering and Biotechnology, 2021
Mechanobiology research is for understanding the role of mechanics in cell physiology and pathology. It will have implications for studying bone physiology and pathology and to guide the strategy for regenerating both the structural and functional ...
Feihu Zhao, Feihu Zhao, Feihu Zhao, Yi Xiong, Keita Ito, Keita Ito, Bert van Rietbergen, Sandra Hofmann, Sandra Hofmann   +8 more
doaj   +1 more source