Eneko Ukar
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View article: Influence of the manufacturing strategy on the microstructure and mechanical properties of Invar 36 alloy parts manufactured by CMT-WAAM
Influence of the manufacturing strategy on the microstructure and mechanical properties of Invar 36 alloy parts manufactured by CMT-WAAM Open
The influence of the manufacturing strategy of Invar 36 alloy parts manufactured by Directed Energy Deposition by Arc (DED-Arc) also known as wire and arc additive manufacturing (WAAM) using cold metal transfer (CMT) technology has been in…
View article: Enhancement of ceramic tool behaviour with textured grooves during machining of Inconel® 718
Enhancement of ceramic tool behaviour with textured grooves during machining of Inconel® 718 Open
Inconel® 718, known for its excellent mechanical properties in extreme conditions, presents machining challenges due to its low machinability. The chip formation process, influenced by its high ductility and low thermal conductivity, leads…
View article: Enhancement of ceramic tool behaviour with textured grooves during machining of Inconel® 718
Enhancement of ceramic tool behaviour with textured grooves during machining of Inconel® 718 Open
Inconel® 718, known for its excellent mechanical properties in extreme conditions, presents machining challenges due to its low machinability. The chip formation process, influenced by its high ductility and low thermal conductivity, leads…
View article: ANALYSIS OF THE INCLINATION OF SLOTS IN TEXTURED CERAMIC TOOLS THROUGH THE STUDY OF THE FINAL ROUGHNESS AND CUTTING FORCES DURING CUTTING OF COLD WORK TOOL STEEL
ANALYSIS OF THE INCLINATION OF SLOTS IN TEXTURED CERAMIC TOOLS THROUGH THE STUDY OF THE FINAL ROUGHNESS AND CUTTING FORCES DURING CUTTING OF COLD WORK TOOL STEEL Open
This study investigates the influence of different texturing inclinations on the cutting forces and surface roughness during hard turning with ceramic cutting tools of X100CrMoV8 cold work tool steel. Four linear textures with inclinations…
View article: Porosity Reduction in 15CDV6 Steel Manufactured by L-DED
Porosity Reduction in 15CDV6 Steel Manufactured by L-DED Open
The Laser Directed Energy Deposition (L-DED) is an Additive Manufacturing process based on the direct injection of the filler material into the desired areas of a substrate. Damaged components can be repaired or coated in order to enhance …
View article: Digital Testing of Hybrid Components Manufactured by L-DED and Forging
Digital Testing of Hybrid Components Manufactured by L-DED and Forging Open
Manufacturing effectiveness is highly demanded in the aerospace industry; therefore, hybrid manufacturing technologies have gained considerable attention in order to overcome the limitations of a single manufacturing technology. Actually, …
View article: Wire arc additive manufacturing of nanomodified 2024 alloy
Wire arc additive manufacturing of nanomodified 2024 alloy Open
In this study, nanomodified 2024 filler metal is investigated for WAAM applications based on CMT-PADV arc welding technology. Al-Cu series alloys are usually considered non weldable since they are highly susceptible to hot cracking and usu…
View article: Study of the flexural behaviour and bonding strength of WC-Co metal matrix composite coatings produced by Laser Directed Energy Deposition
Study of the flexural behaviour and bonding strength of WC-Co metal matrix composite coatings produced by Laser Directed Energy Deposition Open
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 efficiently. Howev…
View article: Analysis of the influence of L-PBF porosity on the mechanical behavior of AlSi10Mg by XRCT-based FEM
Analysis of the influence of L-PBF porosity on the mechanical behavior of AlSi10Mg by XRCT-based FEM Open
This work aims to present an XRCT-based FEM methodology to assess the influence of porosity defects on the mechanical behavior and failure of L-PBF AlSi10Mg components. Hence, the influence of defects on performance is estimated by means o…
View article: Wire arc additive manufacturing of nanomodified 2024 alloy
Wire arc additive manufacturing of nanomodified 2024 alloy Open
Wire arc additive manufacturing (WAAM) has the objective of reducing the fabrication cost and time, as well as the material waste. This technology enables the manufacturing of complex parts near to net shape and as a result, allows greater…
View article: Effect of Heat Treatment on the Microstructure and Hardness of Ni-Based Alloy 718 in a Variable Thickness Geometry Deposited by Powder Fed Directed Energy Deposition
Effect of Heat Treatment on the Microstructure and Hardness of Ni-Based Alloy 718 in a Variable Thickness Geometry Deposited by Powder Fed Directed Energy Deposition Open
Feature addition to existing parts is a trending application for Directed Energy Deposition (DED) and can be used to add complex geometry features to basic forged geometries with the aim to reduce and simplify the number of processing step…
View article: Influence of induction hardening residual stresses on rolling contact fatigue lifetime
Influence of induction hardening residual stresses on rolling contact fatigue lifetime Open
Rolling contact fatigue is a unique mode of fatigue that components under cyclic contact loading experience. In this work, the impact of induction hardening residual stresses in rolling contact fatigue lifetime is investigated experimental…
View article: Normalized hardness prediction of L-DED metal matrix composite coatings for wear-resistant applications
Normalized hardness prediction of L-DED metal matrix composite coatings for wear-resistant applications Open
In the present work, a Finite Element (FE) model is developed to predict the normalized hardness of Metal Matrix Composite (MMC) coatings manufactured by laser Directed Energy Deposition (L-DED). L-DED has gained significant attention late…
View article: Machine-dynamics monitoring for L-DED operations
Machine-dynamics monitoring for L-DED operations Open
Laser Directed Energy Deposition is an Additive Manufacturing technology that enables repairing or coating high-added-value components. The obtained results depend on the process parameters, but also on the machine dynamics, e.g. the capab…
View article: Laser engraving of chip-breaker geometry on ceramic cutting tools
Laser engraving of chip-breaker geometry on ceramic cutting tools Open
Laser texturing is a process that allows the selective removal of material by applying a high energy density over a small area during a very short time interval. Although it is generally common to use ultra-short pulse (ps or fs) lasers fo…
View article: Design, manufacturing and validation of chip breakers in ceramic inserts for the machining of aeronautic nickel-based superalloys Inconel® 718
Design, manufacturing and validation of chip breakers in ceramic inserts for the machining of aeronautic nickel-based superalloys Inconel® 718 Open
In a world were reducing manufacturing times of components is primordial, achieving not only increased cutting tool life but also the capacity to machine faster is a great advance in the technique. Furthermore, sectors, such as the aeronau…
View article: A semi-analytical coupled simulation approach for induction heating
A semi-analytical coupled simulation approach for induction heating Open
The numerical simulation of the induction heating process can be computationally expensive, especially if ferromagnetic materials are studied. There are several analytical models that describe the electromagnetic phenomena. However, these …
View article: Strategies to Reduce Porosity in Al-Mg WAAM Parts and Their Impact on Mechanical Properties
Strategies to Reduce Porosity in Al-Mg WAAM Parts and Their Impact on Mechanical Properties Open
With the advent of disruptive additive manufacturing (AM), there is an increasing interest and demand of high mechanical property aluminium parts built directly by these technologies. This has led to the need for continuous improvement of …
View article: Analysis of the Part Distortions for Inconel 718 SLM: A Case Study on the NIST Test Artifact
Analysis of the Part Distortions for Inconel 718 SLM: A Case Study on the NIST Test Artifact Open
The present paper evaluates the misalignment and geometry distortion of the standard National Institute of Standards and Technology (NIST) test artifact in Inconel 718 alloy, when several layers with and without supports are employed to ma…
View article: Abrasive Disc Performance in Dry-Cutting of Medium-Carbon Steel
Abrasive Disc Performance in Dry-Cutting of Medium-Carbon Steel Open
Abrasive-cutting processes are widely used to obtain semi-finished products from metal bars, slabs, or tubes. Thus, the abrasive cutting-off process is applied when requiring precision cutting and productivity at a moderate price. Cut-off …
View article: Influence of Elastomer Layers in the Quality of Aluminum Parts on Finishing Operations
Influence of Elastomer Layers in the Quality of Aluminum Parts on Finishing Operations Open
In finishing processes, the quality of aluminum parts is mostly influenced by static and dynamic phenomena. Different solutions have been studied toward a stable milling process attainment. However, the improvements obtained with the tunin…
View article: Laser Dissimilar Joining of Al7075T6 with Glass-Fiber-Reinforced Polyamide Composite
Laser Dissimilar Joining of Al7075T6 with Glass-Fiber-Reinforced Polyamide Composite Open
Dissimilar joining between metal and composite sheets is usually carried out by mechanical or adhesive joining. Laser dissimilar joining between metal and composite sheets could be an alternative to these methods, as it is a cost-effective…
View article: Predicting the induction hardened case in 42CrMo4 cylinders
Predicting the induction hardened case in 42CrMo4 cylinders Open
Induction hardening has the potential to produce favorable surface integrity that can improve fatigue performance and extend the lifetime of a component. The localized superficial heating provided by induction is the main advantage of this…
View article: Laser beam welding analytical model when using wobble strategy
Laser beam welding analytical model when using wobble strategy Open
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 high-frequency o…