Results 11 to 20 of about 381,300 (337)

Rock cuttability estimation via Cerchar scratch test [PDF]

open access: yesScientific Reports
In this article, two rock cuttability parameters, scratching force and specific energy, were determined by means of the Cerchar scratch test, and then in comparison with widely accepted theoretical models of rock cutting.
Guangzhe Zhang
doaj   +2 more sources

Search-Based Testing for Scratch Programs [PDF]

open access: yes, 2020
15 pages, to be published in Proceedings of the 12th Symposium on Search-Based Software Engineering (SSBSE 2020)
Deiner, Adina   +4 more
openaire   +2 more sources

Scratch behavior of model epoxy resins with different crosslinking densities

open access: yesMaterials & Design, 2019
The scratch behavior of model epoxy resins with varying degrees of crosslink density was investigated according to the ASTM D7027/ISO 19252 scratch test methodology.
Glendimar Molero, Hung-Jue Sue
doaj   +1 more source

Evaluation of the Possibility to Improve the Scratch Resistance of the AZ91 Alloy by Applying a Coating [PDF]

open access: yesArchives of Foundry Engineering, 2023
This paper presents the possibility of improving the scratch resistance of the AZ91 magnesium alloy by applying a WCCoCr coating using the Air Plasma Spraying (APS) method. The coating thickness ranged from 140 to 160 m.
Marek Mróz   +2 more
doaj   +1 more source

An Analysis of Edge Chipping in LiTaO3 Wafer Grinding Using a Scratch Test and FEA Simulation

open access: yesLubricants, 2023
Lithium tantalite (LiTaO3) is a representative multifunctional single-crystal material with electro-optical, acoustic, piezoelectric, pyroelectric, and nonlinear optical properties used as a substrate for surface acoustic wave (SAW) devices.
Haeseong Hwang   +2 more
doaj   +1 more source

Evaluating the Wear of Polycrystalline Diamond Compact Drill Bit Cutters using Indentation and Scratch Tests

open access: yesARO-The Scientific Journal of Koya University, 2018
–Polycrystalline diamond compact (PDC) drill bits are widely used in oil and gas drilling. The wear of PDC cutters is a major problem during drilling. It leads to severe time losses which affect the overall drilling operation cost.
Rafid K. Abbas, Ali R. Hassanpour
doaj   +1 more source

Creating R Packages: A Tutorial [PDF]

open access: yes, 2008
This tutorial gives a practical introduction to creating R packages. We discuss how object oriented programming and S formulas can be used to give R code the usual look and feel, how to start a package from a collection of R functions, and how to test ...
Brito, Paula, Leisch, Friedrich
core   +2 more sources

High-temperature oxidation of nickel-based alloys and estimation of the adhesion strength of resulting oxide layers [PDF]

open access: yes, 2011
The kinetics of isothermal oxidation (1100°C) of commercial nickel-based alloys with different content of sulfur (0.22–3.2 wt ppm) is studied. The adhesion strength in a metal/oxide system is estimated as a function of sulfur content and duration of high-
A.A. Volinsky   +16 more
core   +1 more source

Mechanical and barrier properties of MOCVD processed alumina coatings on Ti6Al4V titanium alloy [PDF]

open access: yes, 2011
This study focuses on the implementation of different aluminum oxide coatings processed by metal-organic chemical vapor deposition from aluminum tri-isopropoxide on commercial Ti6Al4V titanium alloy to improve its high temperature corrosion resistance ...
Alexis, Joël   +6 more
core   +3 more sources

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