Results 261 to 270 of about 337,798 (298)

Age-related changes in visual performance: A defocus curve study in healthy phakic eyes. [PDF]

open access: yesPLoS One
Baoud Ould Haddi I   +5 more
europepmc   +1 more source
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On-line monitoring of depth of cut in AWJ cutting

International Journal of Machine Tools and Manufacture, 2004
Monitoring of the abrasive waterjet (AWJ) cutting process has become increasingly important. The present paper proposes a model for on-line depth of cut monitoring based on the acoustic emission (AE) response to the variation in AWJ depth of cut, instead of the expensive and impractical vertical cutting force monitoring.
Ashraf I Hassan, R Kovačević
exaly   +2 more sources

Optimization of working parameters of water jet cutting in terms of depth and width of cut

open access: yesProceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 2011
The purpose of this study is to optimize different operational parameters, such as the nozzle diameter, traverse velocity, standoff distance, and pump pressure, with reference to cutting efficiency parameters, namely, depth and width of cut, in the cutting operation using a pure water jet on Sardinian basalt samples.
Ozcelik   +8 more
core   +5 more sources

NanoTags for Improved Cuttings Depth Correlation

Petrophysics – The SPWLA Journal of Formation Evaluation and Reservoir Description, 2021
During a drilling operation, rock cuttings are often sampled off a shale shaker for lithology and petrophysical characterization. These analyses play an important role in describing the subsurface, and it is important that the depth origin of the cuttings be accurately determined.
Martin E. Poitzsch   +4 more
openaire   +1 more source

Depth-Optimized Convexity Cuts

Annals of Operations Research, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jonathan Eckstein, Mikhail Nediak
openaire   +2 more sources

Reserch on Cutting Depth Effect in Cutting Process

Applied Mechanics and Materials, 2011
In the cutting procedure, the cutting depth influences cutting forces, chip breaking, chip shaping, and the distribution status of residual stress. The two-dimension heat-mechanic coupling orthogonal cutting model is established with the FEM analysis software by use of the Lagrange quality point coordinate system description method in this paper.
Zhao Wei Dong   +3 more
openaire   +1 more source

The Depth of Cut in Drilling Mode of Rock Cutting

Applied Mechanics and Materials, 2017
Drilling and lateral cutting are two cutting modes used by roadheaders in rock cutting. Accurate estimation of the depth of cut (DOC) of the cutterhead of a roadheader is critical for improving the performance and reliabilityofthe roadheader. Some models have been developed for calculating the DOC of a cutterhead in lateral cutting mode.
Yong Sun, Xing Sheng Li
openaire   +1 more source

Intermittent metal cutting at small cutting depths—2. Cutting forces

International Journal of Machine Tools and Manufacture, 1988
Abstract Cutting forces in intermittent metal cutting at small cutting depths were investigated by single edge experiments. Single cutting strokes were performed in a modified Charpy pendulum tester which offers cutting and thrust force measurement and accurate selection of cutting speed and feed in ranges typical for many intermittent high speed ...
S. Jacobson, P. Wallén, S. Hogmark
openaire   +1 more source

Segmentation of depth image using graph cut

2012 9th International Conference on Fuzzy Systems and Knowledge Discovery, 2012
A large number of tasks in computer vision involve finding a target from a background image. It is also known as the foreground/background discrimination problem. Various methods have been developed to solve this problem. [1, 2, 10, 11, 12] Newly developed techniques for general purpose of object abstraction use both color and edge information for ...
Jiangming Yu, Jieyu Zhao
openaire   +1 more source

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