Zerendatu Artikuluak honen arabera: egilea"Ukar, Eneko"
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Abrasive Disc Performance in Dry-Cutting of Medium-Carbon Steel
Ortega Rodríguez, Naiara; Martynenko, Vitaliy; Pérez, Daniela; Martínez Krahmer, Daniel; López de Lacalle Marcaide, Luis Norberto; Ukar Arrien, Eneko(2020-04-19)
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 ... -
Analysis of the influence of L-PBF porosity on the mechanical behavior of AlSi10Mg by XRCT-based FEM
Pascual Molero, Alejandro; Ortega Rodríguez, Naiara; Plaza Pascual, Soraya
; López de Lacalle Marcaide, Luis Norberto; Ukar Arrien, Eneko
(Elsevier, 2023-01)
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 ... -
Analysis of the Influence of the Use of Cutting Fluid in Hybrid Processes of Machining and Laser Metal Deposition (LMD)
Cortina Burón, Magdalena; Arrizubieta Arrate, Jon Iñaki; Ukar Arrien, Eneko
; Lamikiz Mentxaka, Aitzol (MDPI, 2018-02)
Hybrid manufacturing processes that combine additive and machining operations are gaining relevance in modern industry thanks to the capability of building complex parts with minimal material and, many times, with process ... -
Analysis of the Part Distortions for Inconel 718 SLM: A Case Study on the NIST Test Artifact
Martínez Rodríguez, Silvia; Ortega Rodríguez, Naiara; Celentano, Diego; Sánchez Egea, Antonio José; Ukar Arrien, Eneko
; Lamikiz Mentxaka, Aitzol (MDPI, 2020-11-11)
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 ... -
Case Study to Illustrate the Potential of Conformal Cooling Channels for Hot Stamping Dies Manufactured Using Hybrid Process of Laser Metal Deposition (LMD) and Milling
Cortina Burón, Magdalena; Arrizubieta Arrate, Jon Iñaki; Calleja Ochoa, Amaia; Ukar Arrien, Eneko
; Alberdi Gurrutxaga, Amaia (MDPI, 2018-02)
Hot stamping dies include cooling channels to treat the formed sheet. The optimum cooling channels of dies and molds should adapt to the shape and surface of the dies, so that a homogeneous temperature distribution and ... -
Control loop tuning by thermal simulation applied to the laser transformation hardening with scanning optics process
Martínez Rodríguez, Silvia; Lamikiz Mentxaka, Aitzol; Ukar Arrien, Eneko; Tabernero, Ivan
; Arrizubieta Arrate, Jon Iñaki
(Elsevier, 2016-04)
Laser transformation hardening with scanning optics (LTHS) is a novel manufacturing process on a very preliminary stage of introducing it in the surface treatment industry. The key to ensure the success in this process is ... -
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
Ramiro, PhD Pedro; Galarraga, Haize
; Pérez Checa, Anabel
; Ortiz, Dr. Mikel
; Alberdi, Amaia
; Bhujangrao, Trunal
; Morales, Elena; Ukar Arrien, Eneko
(MDPI, 2022)
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 ... -
Evaluation of the relevance of melt pool dynamics in Laser Material Deposition process modeling
Arrizubieta Arrate, Jon Iñaki; Lamikiz Mentxaka, Aitzol; Fritz, Klocke; Martínez Rodríguez, Silvia; Ukar Arrien, Eneko
; Arntz, Kristian (Elsevier, 2017-07-14)
The melt pool dynamics consideration in the numeric modeling of the Laser Material Deposition (LMD) process can be enormously difficult and expensive, especially if this calculation is not strictly necessary. The increased ... -
Hardness, grainsize and porosity formation prediction on the Laser Metal Deposition of AISI 304 stainless steel
Arrizubieta Arrate, Jon Iñaki; Lamikiz Mentxaka, Aitzol; Cortina Burón, Magdalena
; Ukar Arrien, Eneko
; Alberdi, Amaia
(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 ... -
Influence of Elastomer Layers in the Quality of Aluminum Parts on Finishing Operations
Rubio Mateos, Antonio; Rivero Rastrero, María Asunción; Ukar Arrien, Eneko; Lamikiz Mentxaka, Aitzol (MDPI, 2020-02-22)
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 ... -
Influence of induction hardening residual stresses on rolling contact fatigue lifetime
Areitioaurtena, Maialen; Segurajauregi, Unai
; Fisk, Martin
; Cabello Ulloa, Mario Javier
; Ukar Arrien, Eneko
(Elsevier, 2022-06)
[EN] 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 ... -
Instantaneous powder flux regulation system for Laser Metal Deposition
Arrizubieta Arrate, Jon Iñaki; Martínez Rodríguez, Silvia; Lamikiz Mentxaka, Aitzol; Ukar Arrien, Eneko
; Arntz, Kristian; Klocke, Fritz (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 ... -
Intelligent nozzle design for the Laser Metal Deposition process in the Industry 4.0
Arrizubieta Arrate, Jon Iñaki; Ruiz Salas, José Exequiel; Martínez, S.; Ukar Arrien, Eneko; Lamikiz Mentxaka, Aitzol (Elsevier, 2017)
Laser Metal Deposition (LMD) is an AM (Additive Manufacturing) process that enables to build 3D geometries or enhance the surface properties of the base material by the generation of a coating. With the aim of integrating ... -
Internal characterization and hole formation mechanism in the laser percussion drilling process
Arrizubieta Arrate, Jon Iñaki; Lamikiz Mentxaka, Aitzol; Martínez Rodríguez, Silvia; Ukar Arrien, Eneko
; Tabernero, Ivan
; Girot Mata, Franck Andrés
(Elsevier, 2013-09-09)
Laser percussion drilling is increasing its relevance in many industrial applications, being used particularly in the aircraft industry in performing the micro-holes in nickel based alloys turbine blades for cooling, or ... -
Laser beam welding analytical model when using wobble strategy
Hernando Arriandiaga, Iñigo; Arrizubieta Arrate, Jon Iñaki; Lamikiz Mentxaka, Aitzol; Ukar Arrien, Eneko
(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 ... -
Laser Dissimilar Joining of Al7075T6 with Glass-Fiber-Reinforced Polyamide Composite
Ukar Arrien, Eneko; Arrizubieta Arrate, Jon Iñaki; Ferros, Mercedes; Andres, Maite; Liebana, Fernando (MDPI, 2020-01-22)
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 ... -
Latest Developments in Industrial Hybrid Machine Tools that Combine Additive and Subtractive Operations
Cortina Burón, Magdalena; Arrizubieta Arrate, Jon Iñaki; Ruiz Salas, José Exequiel; Ukar Arrien, Eneko
; Lamikiz Mentxaka, Aitzol (MDPI, 2018-12-18)
Hybrid machine tools combining additive and subtractive processes have arisen as a solution to increasing manufacture requirements, boosting the potentials of both technologies, while compensating and minimizing their ... -
Numerical Model for Predicting Bead Geometry and Microstructure in Laser Beam Welding of Inconel 718 Sheets
Hernando Arrandiaga, Iñigo; Arrizubieta Arrate, Jon Iñaki; Lamikiz Mentxaka, Aitzol; Ukar Arrien, Eneko(MDPI, 2018-07)
A numerical model was developed for predicting the bead geometry and microstructure in laser beam welding of 2 mm thickness Inconel 718 sheets. The experiments were carried out with a 1 kW maximum power fiber laser coupled ... -
Strategies to Reduce Porosity in Al-Mg WAAM Parts and Their Impact on Mechanical Properties
Arana López, Maider; Ukar Arrien, Eneko; Rodriguez, Iker; Iturrioz, Amaia; Alvarez, Pedro (MDPI, 2021-03-23)
Open AccessFeature PaperArticle Strategies to Reduce Porosity in Al-Mg WAAM Parts and Their Impact on Mechanical Properties by Maider Arana 1,2,* [OrcID] , Eneko Ukar 2, Iker Rodriguez 1, Amaia Iturrioz 1 [OrcID] and ... -
Study of the flexural behaviour and bonding strength of WC-Co metal matrix composite coatings produced by Laser Directed Energy Deposition
Ostolaza Gaztelupe, Marta; Arrizubieta Arrate, Jon Iñaki; Lamikiz Mentxaka, Aitzol; Ukar Arrien, Eneko(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 ...