Measurement Studies Utilizing Similarity Evaluation between 3D Surface Topography Measurements DOI Creative Commons
Lijie Liu, Beiwen Li, Hantang Qin

et al.

Mathematics, Journal Year: 2024, Volume and Issue: 12(5), P. 669 - 669

Published: Feb. 24, 2024

In the realm of quality assurance, significance statistical measurement studies cannot be overstated, particularly when it comes to quantifying diverse sources variation in processes. However, complexity intensifies addressing 3D topography data. This research introduces an intuitive similarity-based framework tailored for conducting on data, aiming precisely quantify distinct through astute application similarity evaluation techniques. proposed framework, we investigate mean and variance between surface measurements reveal uniformity reproducibility procedure, respectively. The efficacy our is vividly demonstrated its derived from additive-fabricated specimens. We considered four metal specimens with 20 segmented windows total. were obtained by three operators using two scanning systems. find that repeatability induced are relatively smaller compared optical scanners. also notice geometry different surfaces much larger magnitude measurements. Our findings consistent physical intuition previous research. ensuing experimental yield compelling evidence, affirming devised methods adept at providing profound insights into multifaceted inherent processes utilizing innovative not only showcases applicability but underlines potential significantly contribute field assurance. By offering a systematic approach measuring comprehending stands poised become indispensable tool assurance contexts.

Language: Английский

Beam Shaping in Laser Powder Bed Fusion: Péclet Number and Dynamic Simulation DOI Creative Commons
Sergey N. Grigoriev, A. V. Gusarov, Alexander Metel

et al.

Metals, Journal Year: 2022, Volume and Issue: 12(5), P. 722 - 722

Published: April 24, 2022

A uniform distribution of power density (energy flux) in a stationary laser beam leads to decrease the overheating material center spot during powder bed fusion and losses due its thermal ablation chemical decomposition. The profile cylindrical (flat-top) was compared classical Gaussian mode (TEM00) inverse (donut) (airy first harmonic, TEM01* = TEM01 + TEM10). Calculation Péclet number, which is similarity criterion characterizing relationship between convective molecular processes heat transfer (convection diffusion) flow liquid phase, shows that (TEM01* TEM00 mode) effective narrow temperature range. most result for wide range temperatures, an intermediate evaporation by more than 2.5 times, it increases absolute bandwidth when relative decreases 24%.

Language: Английский

Citations

25
A comparative analysis of non-destructive surface topography measurement techniques for additively manufactured metal parts DOI
Samsul Mahmood,

L. Sue Baugh,

Seung-Jong Lee

et al.

Additive manufacturing, Journal Year: 2025, Volume and Issue: unknown, P. 104791 - 104791

Published: April 1, 2025

Language: Английский

Citations

0
Roughness Evaluation of Burnished Topography with a Precise Definition of the S-L Surface DOI Creative Commons
Przemysław Podulka

Applied Sciences, Journal Year: 2022, Volume and Issue: 12(24), P. 12788 - 12788

Published: Dec. 13, 2022

Studies of surface topography including processes measurement and data analysis have an influence on the description machined parts with their tribological performance. Usually, roughness is analysed when a scale-limited (S-L) surface, excluding short (S-) length (L-) components from raw measured data, defined. Errors in precise definition S-L can cause false estimation detail properties, especially its arise contains some burnished details such as oil pockets, dimples, scratches, or, generally, deep or wide features. The validation proposed methods for also affect accuracy ISO 25178 parameter calculation. It was found that application commonly used procedures, available commercial software (e.g., least-square fitted cylinder element polynomial planes, regular robust Gaussian regression, spline, median fast Fourier transform filters) be suitable definition. However, additional analyses, based power spectral densities, autocorrelation function, texture direction graphs, characterisation, are strongly required. effect values parameters comprehensively studied. Some proposals guidance how to define appropriate with, respectively, objective evaluation parameters, were presented.

Language: Английский

Citations

8
3D roughness standard for performance verification of topography instruments for additively-manufactured surface inspection DOI
Christopher W. Jones, Wenjuan Sun, Hal Boulter

et al.

Measurement Science and Technology, Journal Year: 2022, Volume and Issue: 33(8), P. 084003 - 084003

Published: April 2, 2022

Abstract The unique complex topography of additively-manufactured surfaces—and the recent rapid evolution instruments and techniques to measure them—limits trust in inspection data, direct conflict with requirements application areas such as aerospace, where failure a part can have serious safety consequences. Topography instrument manufacturers end-users require measurement standards controlled reproduction representative surfaces calibrate, performance-verify intercompare for tasks, thereby improving confidence measurement. design surface texture standard is reported, optimised optical areal topography-measuring compatible x-ray computed tomography instruments. Machined from an blank, standard’s four sides represent increasing levels post-processing as-deposited surface. Datum features on facilitate comparison between Integrated step support calibration instrument’s Z scale. Calibration prototype reported; matched typical aerospace Scalmalloy™ additive manufacturing process. also trial large-area chromatic confocal microscope; this appears capable calibrating relatively rough if required do so. Reference Ra S -parameter measurements associated uncertainties are presented, correlation parameters noted, choice consequences filter settings discussed.

Language: Английский

Citations

5
Similarity quantification of 3D surface topography measurements DOI
Yiqun Jiang, Shaodong Wang, Hantang Qin

et al.

Measurement, Journal Year: 2021, Volume and Issue: 186, P. 110207 - 110207

Published: Sept. 24, 2021

Language: Английский

Citations

5
Measurement Studies Utilizing Similarity Evaluation between 3D Surface Topography Measurements DOI Creative Commons
Lijie Liu, Beiwen Li, Hantang Qin

et al.

Mathematics, Journal Year: 2024, Volume and Issue: 12(5), P. 669 - 669

Published: Feb. 24, 2024

In the realm of quality assurance, significance statistical measurement studies cannot be overstated, particularly when it comes to quantifying diverse sources variation in processes. However, complexity intensifies addressing 3D topography data. This research introduces an intuitive similarity-based framework tailored for conducting on data, aiming precisely quantify distinct through astute application similarity evaluation techniques. proposed framework, we investigate mean and variance between surface measurements reveal uniformity reproducibility procedure, respectively. The efficacy our is vividly demonstrated its derived from additive-fabricated specimens. We considered four metal specimens with 20 segmented windows total. were obtained by three operators using two scanning systems. find that repeatability induced are relatively smaller compared optical scanners. also notice geometry different surfaces much larger magnitude measurements. Our findings consistent physical intuition previous research. ensuing experimental yield compelling evidence, affirming devised methods adept at providing profound insights into multifaceted inherent processes utilizing innovative not only showcases applicability but underlines potential significantly contribute field assurance. By offering a systematic approach measuring comprehending stands poised become indispensable tool assurance contexts.

Language: Английский

Citations

0