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Accuracy Assessment of Articulated Industrial Robots using the Extended- and the Loaded-Double-Ball-Bar

Journal of Machine Engineering, 2022
This research paper outlines the methodology and application of geometric and static accuracy assessment of articulated industrial robots using the Extended-Double-Ball-Bar as well as the Loaded-Double-Ball-Bar.
Johann August Marwitz, Nikolas Alexander Theissen, Bassante Monica Katherine Gonzalez, Christian Friedrich, Arvid Hellmich, Andreas Archenti, Steffen Ihlenfeldt   +6 more
doaj   +1 more source

Emerging Trends in Single Point Incremental Sheet Forming of Lightweight Metals

Metals, 2021
Lightweight materials, such as titanium alloys, magnesium alloys, and aluminium alloys, are characterised by unusual combinations of high strength, corrosion resistance, and low weight. However, some of the grades of these alloys exhibit poor formability
Tomasz Trzepieciński, Valentin Oleksik, Tomaž Pepelnjak, Sherwan Mohammed Najm, Imre Paniti, Kuntal Maji   +5 more
doaj   +1 more source

Investigation of 3D Polynomial Model for the Geometric Correction of GeoEye Imagery [PDF]

Journal of Engineering Research - Egypt, 2018
GeoEye satellite has provided the world with high spatial resolution 0.50 meter panchromatic images. Not only the high spatial resolution, but also the high spectral, radiometric and temporal resolutions of GeoEye imagery make it ideally suited for ...
Samah Abo Ramadan, Hafez Afify, Sobhy Abdelmonam   +2 more
doaj   +1 more source

Current Concept of Geometrical Accuracy [PDF]

Research Papers Faculty of Materials Science and Technology Slovak University of Technology, 2014
Abstract Within the solving VEGA 1/0615/12 research project "Influence of 5-axis grinding parameters on the shank cutter´s geometric accuracy", the research team will measure and evaluate geometrical accuracy of the produced parts. They will use the contemporary measurement technology (for example the optical 3D scanners).
Augustín Görög, Ingrid Görögová
openaire   +1 more source

High accuracy geometric Hermite interpolation [PDF]

Computer Aided Geometric Design, 1987
In natürlicher Verallgemeinerung der Hermiteschen Standardinterpolation werden für parametrisierte ebene Kurven interpolierende kubische Splines p(i) bestimmt. Dabei sind die Knotenpunkte und in jedem Knotenpunkt Tangente und Krümmung vorgeschrieben. Die Komponenten von p(i) sind kubische Polynome auf den Parameterintervallen \((i,i+1)\).
de Boor, Carl, Höllig, Klaus, Sabin, Malcolm   +2 more
openaire   +2 more sources

The Use of UAV in Cadastral Mapping of the Czech Republic

ISPRS International Journal of Geo-Information, 2021
The main challenge in the renewal and updating of the Cadastre of Real Estate of the Czech Republic is to achieve maximum efficiency but to retain the required accuracy of all points in the register.
Václav Šafář, Markéta Potůčková, Jakub Karas, Jan Tlustý, Eva Štefanová, Marián Jančovič, Drahomíra Cígler Žofková   +6 more
doaj   +1 more source

Geometric Accuracy of Large Machine Tools [PDF]

Acta Mechanica Slovaca, 2020
This article describes the issue of geometric accuracy of large machine tools. The operation and maintenance of large CNC machine tools is usually affected by a number of aspects related to large workpieces and spaces at the machine installation site. It is the size of the working space and the large dimensions of the production halls that very often ...
Michal Holub, Jiri Rosenfeld
openaire   +1 more source

The Significance of Cross-Sectional Shape Accuracy and Non-Linear Elasticity on the Numerical Modelling of Cerebral Veins under Tensile Loading

Biology, 2023
Traumatic brain injury (TBI) is a serious global health issue, leading to serious disabilities. One type of TBI is acute subdural haematoma (ASDH), which occurs when a bridging vein ruptures. Many numerical models of these structures, mainly based on the
Fábio A. O. Fernandes, Clara I. C. Silveira   +1 more
doaj   +1 more source

Integrating Stereo Images and Laser Altimetry Points Derived from the Same Satellite for High-Accuracy Stereo Mapping

Remote Sensing, 2023
At present, some mapping satellites, such as GaoFen-7 and ZiYuan3-03, are equipped with both optical stereo cameras and laser altimeters that can synchronously obtain stereo images and sparse ground laser altimetry points (LAPs).
Xinming Tang, Ping Zhou, Li Guo, Hongbo Pan   +3 more
doaj   +1 more source

Geometric algebra methods in volumetric accuracy analysis

Mathematical Methods in the Applied Sciences, 2022
With the help of plane geometric algebra, we see volumetric errors as pure geometric objects. We use this identification to expand errors with respect to Abbe's principle into the whole working space with respect to some additional conditions. We show that geometric algebra helps us to understand errors in kinematics chains. We demonstrate our approach
Barbora Navrátilová, Roman Byrtus, Michal Holub   +2 more
openaire   +2 more sources