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Laser beam welding analytical model when using wobble strategy
(Elsevier, 2020-12-23)
This article presents a model for estimating the thermal gradient, bead geometry, and microstructure in the laser welding process when the Wobble strategy is used. This method combines the main feed motion with a secondary ...
Instantaneous powder flux regulation system for Laser Metal Deposition
(Elsevier, 2017-09-04)
A new control system for regulating the powder flux during the laser metal deposition process (LMD) has been designed, developed and validated. The powder regulation system is based on a solenoid, which is coupled to the ...
Hardness, grainsize and porosity formation prediction on the Laser Metal Deposition of AISI 304 stainless steel
(Elsevier, 2018-08-14)
[EN] The presented numerical model solves the heat and mass transfer equations in the Laser Metal Deposition process and based on the evolution of the thermal field predicts the grainsize, the resulting hardness and evaluates ...
Equivalent Energy Release Rate And Crack Stability In The End Notched Flexure With Inserted Roller Mixed Mode I/II Test
(Elsevier, 2017-02)
The crack propagation performance of the End Notched Flexure with inserted roller test is analyzed. An equivalent energy release rate is proposed taking into account the interaction of the modes I and II, based on the ...
In-plane shear behaviour of multiscale hybrid composites based on multiwall carbon nanotubes and long carbon fibres
(Sage, 2015-09-18)
Both in-plane shear modulus and in-plane shear strength of multiscale hybrid composites have been studied. Carbon fibre-based laminates have been fabricated including functionalized multiwall carbon nanotubes by means of ...
Influence of the modification with MWCNT on the interlaminar fracture properties of long carbon fiber composites
(Elsevier, 2011-11-12)
This paper reports the processing of a carbon fiber reinforced epoxy composite with carbon nanotube integration and examines the potential improvement on the interlaminar toughness. Carbon nanotube enhanced composites were ...
Thermal performance of sawdust and lime-mud concrete masonry units
(Elsevier, 2018-04)
Over the past three decades, growing interest in the properties of thermal envelopes and their enhancement has led to the development of new sustainable materials. Nevertheless, Concrete Masonry Units (CMUs) with negligible ...
On the development and evolution of wear flats in microcrystalline sintered alumina grinding wheels.
(Elsevier, 2018-03-26)
Wheel wear is a critical issue for grinding process optimization. This is why it receives so much attentionboth from Academia and industry. The development of new generations of abrasive wheels requiresimproving the ...
Overhang constraint for topology optimization of self-supported compliant mechanisms considering additive manufacturing
(Elsevier, 2019-04)
This work presents a computational procedure for direct integration of Topology Optimization and Additive Manufacturing (AM) technologies for compliant mechanisms design. Many topologically optimized geometries present ...
The prediction of bending strengths in SFRSCC using Computational Fluid Dynamics (CFD)
(Elsevier, 2014)
This research establishes a correlation between the predicted fiber orientation in Steel Fiber Reinforced Concrete (SFRC) and the flexural behavior of the composite material. It is well known that the proper alignment of ...