Results 31 to 40 of about 4,784,113 (302)

Analysis of gear surface morphology based on gray level co-occurrence matrix and fractal dimension.

open access: yesPLoS ONE, 2019
To investigate morphological characteristics and generation mechanism of the machined gears surface, image characteristics of machined surface morphology including profile roughness, fractal and textural characteristics were studied.
Bo Wei   +5 more
doaj   +1 more source

Molecular Dynamics Investigation of Residual Stress and Surface Roughness of Cerium under Diamond Cutting

open access: yesMicromachines, 2018
Machined surface quality in terms of residual stress and surface roughness has an important influence on the performance of devices and components. In the present work, we elucidate the formation mechanisms of residual stress and surface roughness of ...
Yao Li   +5 more
doaj   +1 more source

Surface Quality of Carbide Metal After Electrical Discharge Machining

open access: yesInternational Journal of Engineering and Management Sciences, 2023
Recently, the requirements for machining shape-complex products made of hard-to-machine materials, including carbide, have been increasing significantly. However, their machining is rather problematic.
Ľuboslav Straka, Patrik Kuchta
doaj   +1 more source

Quantitative Evaluation of Machined-Surface Gloss Using Visual Simulation and its Application to Sensory Test [PDF]

open access: yes, 2022
In the machining field, the quality of a machined surface is characterized using both quantitative and sensory parameters. It is important to quantitatively evaluate sensory parameters to automate the evaluation of machined surfaces and determine the ...
Yamaji, Iwao   +9 more
core   +1 more source

Experimental Investigation of Ultrasonic Vibration Assisted Turning of 304 Austenitic Stainless Steel

open access: yesShock and Vibration, 2015
This research study focuses on the experimental analysis of the three-dimensional (3D) surface topography and surface roughness of the workpiece machined with ultrasonic vibration assisted turning (UAT) in comparison to conventional turning (CT). For the
Ping Zou   +4 more
doaj   +1 more source

Analysis of defects on machined surfaces of aluminum alloy (Al 7075) using imaging and topographical techniques

open access: yesInternational Journal of Metrology and Quality Engineering, 2022
Aluminum alloys 7075 (Al 7075) are widely used for various industrial components in which machining operations are often conducted during their manufacturing process.
Dahnel Aishah Najiah   +4 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Influence of the Machining Process on the Service Life and Pitting Morphology of Gear-Tooth Surfaces

open access: yesMetals, 2022
Pitting, which results from contact fatigue, is a common failure mode in gear transmission systems and is influenced by the material strength and stress state of the contact area, which is further influenced by lubrication and roughness because of stress
Wenbo Xu   +8 more
doaj   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

open access: yesFEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang   +4 more
wiley   +1 more source

Atomistic Simulation Study of Nanoparticle Effect on Nano-Cutting Mechanisms of Single-Crystalline Materials

open access: yesMicromachines, 2020
Nanoparticle (NP), as a kind of hard-to-machine component in nanofabrication processes, dramatically affects the machined surface quality in nano-cutting.
Pengyue Zhao   +4 more
doaj   +1 more source

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