Results 71 to 80 of about 205,537 (282)

A Hybrid Chatter Detection Method Based on WPD, SSA, and SVM-PSO

Shock and Vibration, 2020
As a kind of self-excited vibrations, chatter vibration is extremely common in end milling, especially in high-speed cutting processes. It affects the machining accuracy of products and decreases the processing efficiency of machine tools.
Erhua Wang, Peng Yan, Jie Liu
doaj   +1 more source

Patterning the Void: Combining L‐Systems with Archimedean Tessellations as a Perspective for Tissue Engineering Scaffolds

Advanced Functional Materials, EarlyView.
This study introduces a novel multi‐scale scaffold design using L‐fractals arranged in Archimedean tessellations for tissue regeneration. Despite similar porosity, tiles display vastly different tensile responses (1–100 MPa) and deformation modes. In vitro experiments with hMSCs show geometry‐dependent growth and activity. Over 55 000 tile combinations
Maria Kalogeropoulou, Kenny A. van Kampen, Pierpaolo Fucile, Carlos Mota, Lorenzo Moroni   +4 more
wiley   +1 more source

The investigation of the chip behaviour during the end milling cutting process

MATEC Web of Conferences, 2017
Generally the study, evaluation and general understanding of end milling cutters are complicated by the complexity of the cutting process and of the cutting tool.
Vereş Ovidiu Virgil, Popa Marcel Sabin, Sattel Stefan, Jugrestan Claudiu Ioan, Cotargă Elena Adina   +4 more
doaj   +1 more source

Dynamic analysis of runout correction in milling [PDF]

, 2010
Tool runout and its effects is an important area of research within modelling, simulation, and control of milling forces. Tool runout causes tool cutting edges to experience uneven forces during milling.
Diez Cifuentes, Eduardo, Guzman Villaseñor, Mario, Perez Garcia, Hilde, Vizán Idoipe, Antonio   +3 more
core   +2 more sources

Defect Analysis of the β– to γ–Ga2O3 Phase Transition

Advanced Functional Materials, EarlyView.
The role of defects at all the relevant stages of the β$\beta$‐ to γ$\gamma$‐Ga2O3 polymorph transition is investigated using a multi method approach. The positron annihilation spectroscopy based results show that the defect density decreases after the transition, and that changes in defect configuration within the γ phase occur with increasing ...
Umutcan Bektas, Maciej O. Liedke, Huan Liu, Fabian Ganss, Maik Butterling, Nico Klingner, René Hübner, Ilja Makkonen, Andreas Wagner, Gregor Hlawacek   +9 more
wiley   +1 more source

Analysis and Prediction of Micromilling Stability with Variable Tool Geometry

Advances in Mechanical Engineering, 2014
Micromilling can fabricate miniaturized components using micro-end mill at high rotational speeds. The analysis of machining stability in micromilling plays an important role in characterizing the cutting process, estimating the tool life, and optimizing
Ziyang Cao, Hua Li, Zhen Yin, Wei Liu
doaj   +1 more source

Surface Roughness Optimization In End Milling Operation With Damper Inserted End Milling Cutters

, 2012
{"references": ["Cobb, W. T., \"Design of Dampers for Boring Bars and Spindle\nExtensions,\" Master-s Thesis, Mechanical Engineering, University of\nFlorida, Gainesville, FL, 1989.", "Keyvanmanesh, Amir, \"Evaluation of Chatter Detection and Control\nSystem,\" Master-s Thesis, Mechanical Engineering, University of\nFlorida, Gainesville, FL, 1990 ...
Rao, Krishna Mohana, G. Ravi Kumar, P. Sowmya   +2 more
openaire   +1 more source

The Realization of Multidirectional, Free‐Standing 3D Plasmonic Nanostructures via 3D Nanoprinting: A Case Study of Fractal Antennas

Advanced Functional Materials, EarlyView.
Free‐standing plasmonic gold‐based fractal antennas are fabricated by 3D nanoprinting, employing focused electron beam induced deposition and an optimized purification method to remove carbon while conserving structural fidelity. Simulation and experiment show broadband plasmonic activity, including customizable polarizability, thereby paving the way ...
Verena Reisecker, Robert Winkler, Ulrich Hohenester, Evelin Fisslthaler, Daniel Knez, Gerald Kothleitner, Georg Haberfehlner   +6 more
wiley   +1 more source

Machining strategy development in 5-axis milling operations using process models [PDF]

, 2010
Increased productivity and part quality can be achieved by selecting machining strategies and conditions properly. At one extreme very high speed and feed rate with small depth of cut can be used for high productivity whereas deep cuts accompanied with ...
Budak, Erhan, Murtezaoglu, Yavuz, Murtezaoğlu, Yavuz, Ozkirimli, Omer Mehmet, Ozturk, Erdem, Tunc, Taner L., Tunç, Taner L., Özkırımlı, Ömer Mehmet, Öztürk, Erdem   +8 more
core  

A Vascular Microphysiological Model of Lung Fibrosis Reveals That Myofibroblasts and IPF Patient‐Derived Fibroblasts Impair Angiogenesis and Vasculogenesis

Advanced Functional Materials, EarlyView.
A microphysiological lung fibrosis model recapitulates myofibroblast–vascular interactions. Induced myofibroblasts and patient‐derived IPF fibroblasts impair angiogenesis and increase vascular permeability via TGF‐β1–driven signaling. Pharmacological interventions with SB 431542 and VEGF supplementation restore vascular morphology and barrier function.
Elena Cambria, Adriana Blazeski, Eunkyung Clare Ko, Tran Thai, Shania Dantes, David A. Barbie, Sarah E. Shelton, Roger D. Kamm   +7 more
wiley   +1 more source