Results 81 to 90 of about 2,447,927 (284)

Concept and architecture of a new apparatus for cylindrical form measurement with a nanometric level of accuracy [PDF]

open access: yes, 2012
In relation to the industrial need and to the progress of technology, Laboratoire National de M´etrologie et d’Essais (LNE) would like to improve the measurement of its primary pressure standards, spherical and flick standards.
David, Jean Marie   +5 more
core   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

open access: yesAdvanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi   +3 more
wiley   +1 more source

A Practical Noise2Noise Denoising Pipeline for High‐Throughput Raman Spectroscopy

open access: yesAdvanced Engineering Materials, EarlyView.
A lightweight and reproducible denoising pipeline for high‐throughput Raman spectroscopy is introduced, based on a 1D convolutional autoencoder trained with a Noise2Noise strategy. Using only repeated short‐exposure acquisitions, the method suppresses stochastic noise without reference spectra, enabling reliable spectral reconstruction while preserving
David Martin‐Calle   +5 more
wiley   +1 more source

New AI‐Assisted Approach for Expanding the Solution Space: Application to Lattice Structure Design

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces an innovative framework for designing structured materials by ex panding the design space through reparameterization of qualitative variables into continuous structural descriptors. Combined with machine‐learning‐based prediction and multi‐objective optimization, the approach enables the discovery of novel lattice architectures ...
G. H. Gahimbare   +5 more
wiley   +1 more source

Bases of variational method for calculating of metal-cutting systems accuracy

open access: yesMATEC Web of Conferences, 2018
The bases of a variation method to calculate the metal-cutting systems accuracy for the first time are systemically stated in this paper. The main attention is paid to a problem of joint influence of geometrical accuracy of machine tools and cutting ...
Anikeeva Olesya   +2 more
doaj   +1 more source

Geometrical Accuracy Investigations of Handheld 3D Scanners in Comparison: Low-Cost vs. High-End [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Handheld 3D scanners have gained increasing importance in recent years due to their flexibility and declining acquisition costs. While high-end systems provide standardized accuracy specifications, affordable devices often lack reliable and comparable ...
T. P. Kersten   +2 more
doaj   +1 more source

Geometrical intuition and the learning and teaching of geometry

open access: yes, 2004
Intuition is often regarded as essential in the learning of geometry, but how such skills might be effectively developed in students remains an open question.
Yamamoto, Shinya   +2 more
core   +1 more source

Additive Manufacturing of Alumina‐Reinforced Elastomers

open access: yesAdvanced Engineering Materials, EarlyView.
Vat‐photopolymerized elastomers reinforced with platelet‐shaped alumina exhibited preferential orientation, reduced porosity, and significantly enhanced mechanical performance. A 3 wt% platelet loading increased tensile strength from 12.4 to 45.7 MPa, highlighting the critical role of filler morphology in elastomeric VPP composites.
Majid Barzegar Keyvani   +6 more
wiley   +1 more source

Workpiece geometrical accuracy measurement possibilities

open access: yes, 2011
The aim of this bachelor thesis is to do a research in the field of measurement of geometrical accuracy of workpiece. In the introduction I deal with the description and graphic interpretation of geometrical tolerances and parameters of the surface ...
Tvardek, Michal
core   +1 more source

Using the statistic tolerance interval for control measuring of building construction [PDF]

open access: yesActa Montanistica Slovaca, 2007
The basic requierement for ensuring of geometrical accuracy is knowledge of all requierements on accuracy of geometrical parameters on finished construction.
Jana Neumanová
doaj  

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