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Now showing items 21-30 of 43
On Constraints and Parasitic Motions of a Tripod Parallel Continuum Manipulator
(MDPI, 2023-01-06)
A parallel continuum manipulator (PCM) is a mechanism of closed-loop morphology with flexible elements such that their deformation contributes to its mobility. Flexible hexapods are six-degrees-of-freedom (DoF) fully ...
Novel Assessment Methodology for Laser Metal Deposition of New Metallic Alloys
(MDPI, 2023-01-09)
Metal additive manufacturing technologies are gaining great interest. However, the existing metallic alloys are generally formulated for conventional manufacturing processes. Thus, it is necessary to adapt their chemical ...
Impact of In-Soil Ageing Effect on PLA Printed Parts Tensile Properties
(MDPI, 2023-02-09)
Material extrusion (MEX), more commonly known as fused deposition modelling (FDM/FFF), is one of the most widely used techniques in polymeric Additive Manufacturing (AM). This technology is increasingly present in fields ...
On the effects of cutting-edge angle on high-feed turning of Inconel 718© superalloy
(Springer, 2023-04)
Machining processes on heat-resistant superalloys—i.e., turbine cases, rings, or shafts—are challenging tasks. The high-added value of such parts makes cycle times be longer than expected. Recently, high-feed turning ...
Small Punch Test on Jominy Bars for High-Throughput Characterization of Quenched and Tempered Steel
(MDPI, 2023-10-25)
Studying the effect of quench and tempering heat treatments on steel, more specifically screening the effect of the austenitizing, quenching, and tempering conditions on mechanical properties, can be extremely material- ...
Wear of Abrasive Tools during CMC Machining
(MDPI, 2023-11-13)
Machining CMCs under productivity conditions while limiting tool wear and material damage is a challenge for applications such as jet aircraft engines and industrial turbines. This contribution focused on developing a ...
Study of the flexural behaviour and bonding strength of WC-Co metal matrix composite coatings produced by Laser Directed Energy Deposition
(Elsevier, 2023-06)
Surface coatings enable more durable and sustainable solutions to face the degradation of the functional surfaces of high-added-value components. Particularly, metal matrix composites (MMC) are known to mitigate friction ...
Kinematic Analysis of a Tendon-Driven Hybrid Rigid–Flexible Four-Bar; Application to Optimum Dimensional Synthesis
(MDPI, 2023-10-09)
In design matters, mechanisms with deformable elements are a step behind those with rigid bars, particularly if dimensional synthesis is considered a fundamental part of mechanism design. For the purposes of this work, a ...
The influence of cutting edge microgeometry on the broaching of Inconel 718 slots
(Elsevier, 2023-12)
In aero-engine production, the dovetails (firtrees) of turbine discs are manufactured by broaching. Introducing innovative micro-geometry modifications to broaching tools can significantly influence cutting force, energy ...
Early detection of tool wear in electromechanical broaching machines by monitoring main stroke servomotors
(Elsevier, 2023-12)
This paper aims to provide researchers and engineers with evidence that sensorless machine variable monitoring can achieve tool wear monitoring in broaching in real production environments, reducing production errors, ...