Results 51 to 60 of about 3,006,278 (248)

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

open access: yesAdvanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora   +4 more
wiley   +1 more source

ON TEACHING DESCRIPTIVE GEOMETRY AT THE FACULTY OF CIVIL ENGINEERING OF IASI

open access: yesJournal of Industrial Design and Engineering Graphics, 2007
The main goal of this paper deals with specific didactic and methodical principles in the teaching of descriptive geometry elaborated and applied at the Faculty of Construction, “Gheorghe Asachi” Technical University of Iasi, Romania, for the students in
HÎNCU Graţiela, STĂNILĂ Aneta
doaj  

MATHEMATICAL MODEL OF ATTITUDE CONTROL BUCKET‐WHEEL EXCAVATOR [PDF]

open access: yesManagement Systems in Production Engineering, 2013
This lecture deals with the application problems of convertibility GPS system at paddle excavator K 800. The claims of the modern operating surface mining of the excavators requires a lot of information for monitoring of mining process, capacity mining ...
Ivana ONDERKOVÁ   +2 more
doaj  

Reliability of electrical security systems in external protection of the military objects

open access: yesCommunications, 2004
In this paper electrical security systems used in military objects and areas of the Slovak Republic Armed Forces are described. There is described a method of reliability calculation of the safety system elements as a probability that the system will ...
Tatiana Olejnikova
doaj   +1 more source

Computer methods in descriptive and differential geometry Monge's legacy.

open access: yes, 1999
Computer methods in descriptive and differential geometry Monge's ...
Kristen Anderson. Wottreng (7955084)
core   +2 more sources

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Spatial Ability, Descriptive Geometry and Dynamic Geometry Systems [PDF]

open access: yes
Dynamic Geometry Systems allow new opportunities for the teaching of geometry and descriptive geometry. These systems make possible to create dynamic drawings quickly and flexibly.
Nagy-Kondor, Rita
core  

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

Ways of linking geometry and algebra, the case of Geogebra

open access: yes, 2007
This paper discusses ways of enhancing the teaching of mathematics through enabling learners to gain stronger links between geometry and algebra. The vehicle for this is consideration of the affordances of GeoGebra, a form of freely-available open-source
BSRLM Geometry Working Group   +2 more
core   +1 more source

EFFICIENCY INCREASING OF BELT CONVEYOR’S DRIVE BY CERAMIC LAGGING OF DRIVING PULLEY [PDF]

open access: yesManagement Systems in Production Engineering, 2012
In any point of the belt contact with the drum a relative speed compensation takes place that is carried out by a slippage even when the relevant contact spots are fairly clean and dry.
Josef JURMAN   +2 more
doaj  

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