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Aitor Moreno
Vicomtech Foundation, Basque Research and Technology Alliance (BRTA), Mikeletegi 57, Donostia-San Sebastian 20009, Spain

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Journal article
Published: 24 May 2021 in Manufacturing Letters
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Avoidance of over-deposition at trajectory corners is relevant in Laser Metal Deposition (LMD) for Additive Manufacturing. Currently available LMD hardware only allows constant material feed (g/s). Therefore, gliding speed of the material dispenser is the remaining tuning variable for controlling metal over-deposition at corners. Existing literature reports trial-error physical experiments, addressing only particular corner angles. In response, this manuscript reports the implementation of a voxel-based simulator of the bead geometry, taking into consideration bead profile, dispenser velocity, material feed, and bead curve geometry. We use it to evaluate two constant-feed tailored-velocity strategies for minimizing material over-deposition at corners.

ACS Style

Diego Montoya-Zapata; Carles Creus; Aitor Moreno; Igor Ortiz; Piera Alvarez; Oscar Ruiz-Salguero; Jorge Posada. Computational minimization of over-deposition at corners of trajectories in Laser Metal Deposition. Manufacturing Letters 2021, 29, 29 -33.

AMA Style

Diego Montoya-Zapata, Carles Creus, Aitor Moreno, Igor Ortiz, Piera Alvarez, Oscar Ruiz-Salguero, Jorge Posada. Computational minimization of over-deposition at corners of trajectories in Laser Metal Deposition. Manufacturing Letters. 2021; 29 ():29-33.

Chicago/Turabian Style

Diego Montoya-Zapata; Carles Creus; Aitor Moreno; Igor Ortiz; Piera Alvarez; Oscar Ruiz-Salguero; Jorge Posada. 2021. "Computational minimization of over-deposition at corners of trajectories in Laser Metal Deposition." Manufacturing Letters 29, no. : 29-33.

Journal article
Published: 20 February 2021 in Procedia Computer Science
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Additive manufacturing is a key technology of Industry 4.0. In the context of Laser Metal Deposition (LMD), the problem of automating the generation of the layer-by-layer deposition strategies is relevant because the laser path pattern and the process parameters determine the mechanical quality of the resulting part and the efficiency of the process. Many of the existing approaches rely on path planning strategies created for subtractive manufacturing. However, these techniques generate path patterns not suitable for LMD. This manuscript presents deposition strategies which are specific for LMD processes, including the laser path and the process parameters at selected control points. This manuscript considers diverse infill patterns for general polygonal regions. This manuscript also reports the implementation of a 2D region avoidance algorithm, used to reposition the laser head between regions and between layers. These transitions are important because current hardware maintains the material feeding while the laser is OFF. Our implementation is validated by the fabrication and verification of actual metallic parts using our algorithms in an LMD process. Future work is required on optimization of material savings and overall process performance.

ACS Style

Diego Montoya-Zapata; Carles Creus; Igor Ortiz; Piera Alvarez; Aitor Moreno; Jorge Posada; Oscar Ruiz-Salguero. Generation of 2.5D Deposition Strategies for LMD-based Additive Manufacturing. Procedia Computer Science 2021, 180, 280 -289.

AMA Style

Diego Montoya-Zapata, Carles Creus, Igor Ortiz, Piera Alvarez, Aitor Moreno, Jorge Posada, Oscar Ruiz-Salguero. Generation of 2.5D Deposition Strategies for LMD-based Additive Manufacturing. Procedia Computer Science. 2021; 180 ():280-289.

Chicago/Turabian Style

Diego Montoya-Zapata; Carles Creus; Igor Ortiz; Piera Alvarez; Aitor Moreno; Jorge Posada; Oscar Ruiz-Salguero. 2021. "Generation of 2.5D Deposition Strategies for LMD-based Additive Manufacturing." Procedia Computer Science 180, no. : 280-289.

Journal article
Published: 28 January 2021 in Applied Sciences
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In the context of generation of lubrication flows, gear pumps are widely used, with gerotor-type pumps being specially popular, given their low cost, high compactness, and reliability. The design process of gerotor pumps requires the simulation of the fluid dynamics phenomena that characterize the fluid displacement by the pump. Designers and researchers mainly rely on these methods: (i) computational fluid dynamics (CFD) and (ii) lumped parameter models. CFD methods are accurate in predicting the behavior of the pump, at the expense of large computing resources and time. On the other hand, Lumped Parameter models are fast and they do not require CFD software, at the expense of diminished accuracy. Usually, Lumped Parameter fluid simulation is mounted on specialized black-box visual programming platforms. The resulting pressures and flow rates are then fed to the design software. In response to the current status, this manuscript reports a virtual prototype to be used in the context of a Digital Twin tool. Our approach: (1) integrates pump design, fast approximate simulation, and result visualization processes, (2) does not require an external numerical solver platforms for the approximate model, (3) allows for the fast simulation of gerotor performance using sensor data to feed the simulation model, and (4) compares simulated data vs. imported gerotor operational data. Our results show good agreement between our prediction and CFD-based simulations of the actual pump. Future work is required in predicting rotor micro-movements and cavitation effects, as well as further integration of the physical pump with the software tool.

ACS Style

Juan Pareja-Corcho; Aitor Moreno; Bruno Simoes; Asier Pedrera-Busselo; Ekain San-Jose; Oscar Ruiz-Salguero; Jorge Posada. A Virtual Prototype for Fast Design and Visualization of Gerotor Pumps. Applied Sciences 2021, 11, 1190 .

AMA Style

Juan Pareja-Corcho, Aitor Moreno, Bruno Simoes, Asier Pedrera-Busselo, Ekain San-Jose, Oscar Ruiz-Salguero, Jorge Posada. A Virtual Prototype for Fast Design and Visualization of Gerotor Pumps. Applied Sciences. 2021; 11 (3):1190.

Chicago/Turabian Style

Juan Pareja-Corcho; Aitor Moreno; Bruno Simoes; Asier Pedrera-Busselo; Ekain San-Jose; Oscar Ruiz-Salguero; Jorge Posada. 2021. "A Virtual Prototype for Fast Design and Visualization of Gerotor Pumps." Applied Sciences 11, no. 3: 1190.

Journal article
Published: 19 September 2020 in Mathematics
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In the context of CAD CAM CAE (Computer-Aided Design, Manufacturing and Engineering) and Additive Manufacturing, the computation of level sets of closed 2-manifold triangular meshes (mesh slicing) is relevant for the generation of 3D printing patterns. Current slicing methods rely on the assumption that the function used to compute the level sets satisfies strong Morse conditions, rendering incorrect results when such a function is not a Morse one. To overcome this limitation, this manuscript presents an algorithm for the computation of mesh level sets under the presence of non-Morse degeneracies. To accomplish this, our method defines weak-Morse conditions, and presents a characterization of the possible types of degeneracies. This classification relies on the position of vertices, edges and faces in the neighborhood outside of the slicing plane. Finally, our algorithm produces oriented 1-manifold contours. Each contour orientation defines whether it belongs to a hole or to an external border. This definition is central for Additive Manufacturing purposes. We set up tests encompassing all known non-Morse degeneracies. Our algorithm successfully processes every generated case. Ongoing work addresses (a) a theoretical proof of completeness for our algorithm, (b) implementation of interval trees to improve the algorithm efficiency and, (c) integration into an Additive Manufacturing framework for industry applications.

ACS Style

Daniel Mejia-Parra; Oscar Ruiz-Salguero; Carlos Cadavid; Aitor Moreno; Jorge Posada. Level Sets of Weak-Morse Functions for Triangular Mesh Slicing. Mathematics 2020, 8, 1624 .

AMA Style

Daniel Mejia-Parra, Oscar Ruiz-Salguero, Carlos Cadavid, Aitor Moreno, Jorge Posada. Level Sets of Weak-Morse Functions for Triangular Mesh Slicing. Mathematics. 2020; 8 (9):1624.

Chicago/Turabian Style

Daniel Mejia-Parra; Oscar Ruiz-Salguero; Carlos Cadavid; Aitor Moreno; Jorge Posada. 2020. "Level Sets of Weak-Morse Functions for Triangular Mesh Slicing." Mathematics 8, no. 9: 1624.

Journal article
Published: 01 June 2020 in Applied Sciences
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Lattice-based workpieces contain patterned repetition of individuals of a basic topology (Schwarz, ortho-walls, gyroid, etc.) with each individual having distinct geometric grading. In the context of the design, analysis and manufacturing of lattice workpieces, the problem of rapidly assessing the mechanical behavior of large domains is relevant for pre-evaluation of designs. In this realm, two approaches can be identified: (1) numerical simulations which usually bring accuracy but limit the size of the domains that can be studied due to intractable data sizes, and (2) material homogenization strategies that sacrifice precision to favor efficiency and allow for simulations of large domains. Material homogenization synthesizes diluted material properties in a lattice, according to the volume occupancy factor of such a lattice. Preliminary publications show that material homogenization is reasonable in predicting displacements, but is not in predicting stresses (highly sensitive to local geometry). As a response to such shortcomings, this paper presents a methodology that systematically uses design of experiments (DOE) to produce simple mathematical expressions (meta-models) that relate the stress–strain behavior of the lattice domain and the displacements of the homogeneous domain. The implementation in this paper estimates the von Mises stress in large Schwarz primitive lattice domains under compressive loads. The results of our experiments show that (1) material homogenization can efficiently and accurately approximate the displacements field, even in complex lattice domains, and (2) material homogenization and DOE can produce rough estimations of the von Mises stress in large domains (more than 100 cells). The errors in the von Mises stress estimations reach 42 % for domains of up to 24 cells. This result means that coarse stress–strain estimations may be possible in lattice domains by combining DOE and homogenized material properties. This option is not suitable for precise stress prediction in sensitive contexts wherein high accuracy is needed. Future work is required to refine the meta-models to improve the accuracies of the estimations.

ACS Style

Diego Montoya-Zapata; Diego A. Acosta; Camilo Cortés; Juan Pareja-Corcho; Aitor Moreno; Jorge Posada; Oscar Ruiz-Salguero. Approximation of the Mechanical Response of Large Lattice Domains Using Homogenization and Design of Experiments. Applied Sciences 2020, 10, 3858 .

AMA Style

Diego Montoya-Zapata, Diego A. Acosta, Camilo Cortés, Juan Pareja-Corcho, Aitor Moreno, Jorge Posada, Oscar Ruiz-Salguero. Approximation of the Mechanical Response of Large Lattice Domains Using Homogenization and Design of Experiments. Applied Sciences. 2020; 10 (11):3858.

Chicago/Turabian Style

Diego Montoya-Zapata; Diego A. Acosta; Camilo Cortés; Juan Pareja-Corcho; Aitor Moreno; Jorge Posada; Oscar Ruiz-Salguero. 2020. "Approximation of the Mechanical Response of Large Lattice Domains Using Homogenization and Design of Experiments." Applied Sciences 10, no. 11: 3858.

Journal article
Published: 08 May 2020 in Applied Sciences
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In flexible manufacturing systems, fast feedback from simulation solutions is required for effective tool path planning and parameter optimization. In the particular sub-domain of laser heating/cutting of thin rectangular plates, current state-of-the-art methods include frequency-domain (spectral) analytic solutions that greatly reduce the required computational time in comparison to industry standard finite element based approaches. However, these spectral solutions have not been presented previously in terms of Fourier methods and Fast Fourier Transform (FFT) implementations. This manuscript presents four different schemes that translate the problem of laser heating of rectangular plates into equivalent FFT problems. The presented schemes make use of the FFT algorithm to reduce the computational time complexity of the problem from O ( M 2 N 2 ) to O ( M N log ( M N ) ) (with M × N being the discretization size of the plate). The test results show that the implemented schemes outperform previous non-FFT approaches both in CPU and GPU hardware, resulting in 100 × faster runs. Future work addresses thermal/stress analysis, non-rectangular geometries and non-linear interactions (such as material melting/ablation, convection and radiation heat transfer).

ACS Style

Daniel Mejia-Parra; Ander Arbelaiz; Oscar Ruiz-Salguero; Juan Lalinde-Pulido; Aitor Moreno; Jorge Posada. Fast Simulation of Laser Heating Processes on Thin Metal Plates with FFT Using CPU/GPU Hardware. Applied Sciences 2020, 10, 3281 .

AMA Style

Daniel Mejia-Parra, Ander Arbelaiz, Oscar Ruiz-Salguero, Juan Lalinde-Pulido, Aitor Moreno, Jorge Posada. Fast Simulation of Laser Heating Processes on Thin Metal Plates with FFT Using CPU/GPU Hardware. Applied Sciences. 2020; 10 (9):3281.

Chicago/Turabian Style

Daniel Mejia-Parra; Ander Arbelaiz; Oscar Ruiz-Salguero; Juan Lalinde-Pulido; Aitor Moreno; Jorge Posada. 2020. "Fast Simulation of Laser Heating Processes on Thin Metal Plates with FFT Using CPU/GPU Hardware." Applied Sciences 10, no. 9: 3281.

Journal article
Published: 30 November 2019 in Metals
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In the context of lattice-based design and manufacturing, the problem of physical realization of density maps into lattices of a particular family is central. Density maps are prescribed by design optimization algorithms, which seek to fulfill structural demands on a workpiece, while saving material. These density maps cannot be directly manufactured since local graded densities cannot be achieved using the bulk solid material. Because of this reason, existing topology optimization approaches bias the local voxel relative density to either 0 (void) or 1 (filled). Additive manufacturing opens possibilities to produce graded density individuals belonging to different lattice families. However, voxel-level sampled boundary representations of the individuals produce rough and possibly disconnected shells. In response to this limitation, this article uses sub-voxel sampling (largely unexploited in the literature) to generate lattices of graded densities. This sub-voxel sampling eliminates the risk of shell disconnections and renders better surface continuity. The manuscript devises a function to produce Schwarz cells that materialize a given relative density. This article illustrates a correlation of continuity against stress concentration by simulating C 0 and C 1 inter-lattice continuity. The implemented algorithm produces implicit functions and thus lattice designs which are suitable for metal additive manufacturing and able to achieve the target material savings. The resulting workpieces, produced by outsource manufacturers, are presented. Additional work is required in the modeling of the mechanical response (stress/strain/deformation) and response of large lattice sets (with arbitrary geometry and topology) under working loads.

ACS Style

Diego Montoya-Zapata; Aitor Moreno; Juan Pareja-Corcho; Jorge Posada; Oscar Ruiz-Salguero. Density-Sensitive Implicit Functions Using Sub-Voxel Sampling in Additive Manufacturing. Metals 2019, 9, 1293 .

AMA Style

Diego Montoya-Zapata, Aitor Moreno, Juan Pareja-Corcho, Jorge Posada, Oscar Ruiz-Salguero. Density-Sensitive Implicit Functions Using Sub-Voxel Sampling in Additive Manufacturing. Metals. 2019; 9 (12):1293.

Chicago/Turabian Style

Diego Montoya-Zapata; Aitor Moreno; Juan Pareja-Corcho; Jorge Posada; Oscar Ruiz-Salguero. 2019. "Density-Sensitive Implicit Functions Using Sub-Voxel Sampling in Additive Manufacturing." Metals 9, no. 12: 1293.

Journal article
Published: 20 May 2019 in Mathematics and Computers in Simulation
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In the context of Computer Simulation, the problem of heat transfer analysis of thin plate laser heating is relevant for downstream simulations of machining processes. Alternatives to address the problem include (i) numerical methods, which require unaffordable time and storage computing resources even for very small domains, (ii) analytical methods, which are less expensive but are limited to simple geometries, straight trajectories and do not account for material non-linearities or convective cooling. This manuscript presents a parallel efficient analytic method to determine, in a thin plate under convective cooling, the transient temperature field resulting from application of a laser spot following a curved trajectory. Convergence of both FEA (Finite Element Analysis) and the analytic approaches for a small planar plate is presented, estimating a maximum relative error for the analytic approach below 3.5% at the laser spot. Measured computing times evidence superior efficiency of the analytic approach w.r.t. FEA. A study case, with the analytic solution, for a large spatial and time domain (1m×1m and 12s history, respectively) is presented. This case is not tractable with FEA, where domains larger than 0.05m×0.05m and 2s require high amounts of computing time and storage.

ACS Style

Daniel Mejia-Parra; Aitor Moreno; Jorge Posada; Oscar Ruiz-Salguero; Iñigo Barandiaran; Juan Carlos Poza; Raúl Chopitea. Frequency-domain analytic method for efficient thermal simulation under curved trajectories laser heating. Mathematics and Computers in Simulation 2019, 166, 177 -192.

AMA Style

Daniel Mejia-Parra, Aitor Moreno, Jorge Posada, Oscar Ruiz-Salguero, Iñigo Barandiaran, Juan Carlos Poza, Raúl Chopitea. Frequency-domain analytic method for efficient thermal simulation under curved trajectories laser heating. Mathematics and Computers in Simulation. 2019; 166 ():177-192.

Chicago/Turabian Style

Daniel Mejia-Parra; Aitor Moreno; Jorge Posada; Oscar Ruiz-Salguero; Iñigo Barandiaran; Juan Carlos Poza; Raúl Chopitea. 2019. "Frequency-domain analytic method for efficient thermal simulation under curved trajectories laser heating." Mathematics and Computers in Simulation 166, no. : 177-192.

Articles
Published: 27 November 2018 in International Journal of Production Research
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The Industry 4.0 paradigm introduced several technologies in the industrial manufacturing landscape, highlighting the Cyber Physical Systems, Internet of Things and Visual Computing as some of the key enabling technologies. The fast paced evolution of the technology has to be reflected in the common ground between the machines and the operators. The introduction of advanced, flexible and adaptable Human Machine Interfaces (HMI) will empower the operators with information and custom tools to be more productive in a safer way. This work presents totally functional hardware and a novel software architecture to build flexible advanced HMI interfaces that will provide adaptable and useful information to the operator of the machines. Industrial protocols are used to receive real-time data. A USB camera can be plugged to enable the utilisation of Computer Vision algorithms. A touch display shows adaptable interfaces composed of (a) 3D interactive graphics, (b) texts and 2D images, (c) the camera feed and (d) user interface controls to enable the interaction with the operators. The results present three use cases: (a) an HMI customised for 3D printers, (b) real-time motor control from the HMI and (c) a digital twin of a robotic arm receiving real-time data from the actual robotic arm. This work present data regarding consumption of the hardware for each use case under different work-load.

ACS Style

Aitor Ardanza; Aitor Moreno; Álvaro Segura; Mikel De La Cruz; Daniel Aguinaga. Sustainable and flexible industrial human machine interfaces to support adaptable applications in the Industry 4.0 paradigm. International Journal of Production Research 2018, 57, 4045 -4059.

AMA Style

Aitor Ardanza, Aitor Moreno, Álvaro Segura, Mikel De La Cruz, Daniel Aguinaga. Sustainable and flexible industrial human machine interfaces to support adaptable applications in the Industry 4.0 paradigm. International Journal of Production Research. 2018; 57 (12):4045-4059.

Chicago/Turabian Style

Aitor Ardanza; Aitor Moreno; Álvaro Segura; Mikel De La Cruz; Daniel Aguinaga. 2018. "Sustainable and flexible industrial human machine interfaces to support adaptable applications in the Industry 4.0 paradigm." International Journal of Production Research 57, no. 12: 4045-4059.

Journal article
Published: 24 October 2018 in Materials
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Interactive multi-beam laser machining simulation is crucial in the context of tool path planning and optimization of laser machining parameters. Current simulation approaches for heat transfer analysis (1) rely on numerical Finite Element methods (or any of its variants), non-suitable for interactive applications; and (2) require the multiple laser beams to be completely synchronized in trajectories, parameters and time frames. To overcome this limitation, this manuscript presents an algorithm for interactive simulation of the transient temperature field on the sheet metal. Contrary to standard numerical methods, our algorithm is based on an analytic solution in the frequency domain, allowing arbitrary time/space discretizations without loss of precision and non-monotonic retrieval of the temperature history. In addition, the method allows complete asynchronous laser beams with independent trajectories, parameters and time frames. Our implementation in a GPU device allows simulations at interactive rates even for a large amount of simultaneous laser beams. The presented method is already integrated into an interactive simulation environment for sheet cutting. Ongoing work addresses thermal stress coupling and laser ablation.

ACS Style

Daniel Mejia-Parra; Diego Montoya-Zapata; Ander Arbelaiz; Aitor Moreno; Jorge Posada; Oscar Ruiz-Salguero. Fast Analytic Simulation for Multi-Laser Heating of Sheet Metal in GPU. Materials 2018, 11, 2078 .

AMA Style

Daniel Mejia-Parra, Diego Montoya-Zapata, Ander Arbelaiz, Aitor Moreno, Jorge Posada, Oscar Ruiz-Salguero. Fast Analytic Simulation for Multi-Laser Heating of Sheet Metal in GPU. Materials. 2018; 11 (11):2078.

Chicago/Turabian Style

Daniel Mejia-Parra; Diego Montoya-Zapata; Ander Arbelaiz; Aitor Moreno; Jorge Posada; Oscar Ruiz-Salguero. 2018. "Fast Analytic Simulation for Multi-Laser Heating of Sheet Metal in GPU." Materials 11, no. 11: 2078.

Journal article
Published: 01 June 2018 in Computers & Graphics
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ACS Style

Daniel Mejía; Oscar Ruiz-Salguero; Jairo R. Sánchez; Jorge Posada; Aitor Moreno; Carlos A. Cadavid. Hybrid geometry / topology based mesh segmentation for reverse engineering. Computers & Graphics 2018, 73, 47 -58.

AMA Style

Daniel Mejía, Oscar Ruiz-Salguero, Jairo R. Sánchez, Jorge Posada, Aitor Moreno, Carlos A. Cadavid. Hybrid geometry / topology based mesh segmentation for reverse engineering. Computers & Graphics. 2018; 73 ():47-58.

Chicago/Turabian Style

Daniel Mejía; Oscar Ruiz-Salguero; Jairo R. Sánchez; Jorge Posada; Aitor Moreno; Carlos A. Cadavid. 2018. "Hybrid geometry / topology based mesh segmentation for reverse engineering." Computers & Graphics 73, no. : 47-58.

Journal article
Published: 21 December 2017 in Journal of Manufacturing Science and Engineering
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In the context of computer numeric control (CNC)-based sheet metal laser cutting, the problem of heat transfer simulation is relevant for the optimization of CNC programs. Current physically based simulation tools use numeric or analytic algorithms which provide accurate but slow solutions due to the underlying mathematical description of the model. This paper presents: (1) an analytic solution to the laser heating problem of rectangular sheet metal for curved laser trajectories and convective cooling, (2) a graphics processing unit (GPU) implementation of the analytic solution for fast simulation of the problem, and (3) an integration within an interactive environment for the simulation of sheet metal CNC laser cutting. This analytic approach sacrifices the material removal effect of the laser cut in the favor of an approximated real-time temperature map on the sheet metal. The articulation of thermal, geometric, and graphic feedback in virtual manufacturing environments enables interactive redefinition of the CNC programs for better product quality, lower safety risks, material waste, and energy usage among others. The error with respect to finite element analysis (FEA) in temperature prediction descends as low as 3.5%.

ACS Style

Daniel Mejia; Aitor Moreno; Ander Arbelaiz; Jorge Posada; Oscar E. Ruiz-Salguero; Raúl Chopitea. Accelerated Thermal Simulation for Three-Dimensional Interactive Optimization of Computer Numeric Control Sheet Metal Laser Cutting. Journal of Manufacturing Science and Engineering 2017, 140, 1 .

AMA Style

Daniel Mejia, Aitor Moreno, Ander Arbelaiz, Jorge Posada, Oscar E. Ruiz-Salguero, Raúl Chopitea. Accelerated Thermal Simulation for Three-Dimensional Interactive Optimization of Computer Numeric Control Sheet Metal Laser Cutting. Journal of Manufacturing Science and Engineering. 2017; 140 (3):1.

Chicago/Turabian Style

Daniel Mejia; Aitor Moreno; Ander Arbelaiz; Jorge Posada; Oscar E. Ruiz-Salguero; Raúl Chopitea. 2017. "Accelerated Thermal Simulation for Three-Dimensional Interactive Optimization of Computer Numeric Control Sheet Metal Laser Cutting." Journal of Manufacturing Science and Engineering 140, no. 3: 1.

Original paper
Published: 08 February 2017 in International Journal on Interactive Design and Manufacturing (IJIDeM)
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3D image rendering for virtual reality HMDs is typically generated based on a set of parameters taken from the manufacturer-supplied specifications and an idealised perspective model. But actual displays may vary in build features that alter spatial perception. Moreover, the eye focusing effort is often ignored. The resulting visual discomfort and incorrect geometry perception has discouraged use of immersive virtual reality in industrial applications. This work addresses these issues and describes a system with per-device calibration and control of stereo perspective projections and focus. The ideas presented may improve the usefulness of VR in industrial training and visualization.

ACS Style

Álvaro Segura; Javier Barandiaran; Aitor Moreno; Iñigo Barandiaran; Julián Flórez. Improved virtual reality perception with calibrated stereo and variable focus for industrial use. International Journal on Interactive Design and Manufacturing (IJIDeM) 2017, 12, 95 -103.

AMA Style

Álvaro Segura, Javier Barandiaran, Aitor Moreno, Iñigo Barandiaran, Julián Flórez. Improved virtual reality perception with calibrated stereo and variable focus for industrial use. International Journal on Interactive Design and Manufacturing (IJIDeM). 2017; 12 (1):95-103.

Chicago/Turabian Style

Álvaro Segura; Javier Barandiaran; Aitor Moreno; Iñigo Barandiaran; Julián Flórez. 2017. "Improved virtual reality perception with calibrated stereo and variable focus for industrial use." International Journal on Interactive Design and Manufacturing (IJIDeM) 12, no. 1: 95-103.

Conference paper
Published: 01 January 2017 in Proceedings of the 22nd International Conference on Evaluation and Assessment in Software Engineering 2018
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Recent developments in Web-based volume rendering have gained recognition by Web users and professionals in several fields. The ISO-IEC Standard Extensible 3D (X3D) version 3.3 specifies the integration and visual styling of volumetric data for real-time interaction. The specification is an important milestone describing a framework for expressive presentation. However, it was written before the emergence of WebGL and the HTML5 platform. This paper describes our work to adapt the X3D Volume rendering nodes to the Web platform and to enhance their functionality based on feedback provided by the X3D and X3DOM open source communities. These include: a description of a new volume data node and an application of such node to create 4D volume rendering real time visualizations. We present functionalities that are currently not part of the standard: the edition of Transfer Functions, Multi Planar Reconstruction (MPR), intersection of the volume with 3D objects, clipping planes with volume data and control in the quality of the generated volume visualization. These additions should be considered for inclusion in future revisions of the X3D ISO volume rendering component.

ACS Style

Ander Arbelaiz; Aitor Moreno; Luis Kabongo; Nicholas Polys; Alejandro García-Alonso. Community-driven extensions to the X3D volume rendering component. Proceedings of the 22nd International Conference on Evaluation and Assessment in Software Engineering 2018 2017, 1 -9.

AMA Style

Ander Arbelaiz, Aitor Moreno, Luis Kabongo, Nicholas Polys, Alejandro García-Alonso. Community-driven extensions to the X3D volume rendering component. Proceedings of the 22nd International Conference on Evaluation and Assessment in Software Engineering 2018. 2017; ():1-9.

Chicago/Turabian Style

Ander Arbelaiz; Aitor Moreno; Luis Kabongo; Nicholas Polys; Alejandro García-Alonso. 2017. "Community-driven extensions to the X3D volume rendering component." Proceedings of the 22nd International Conference on Evaluation and Assessment in Software Engineering 2018 , no. : 1-9.

Conference paper
Published: 01 January 2017 in Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications
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ACS Style

Ander Arbelaiz; Aitor Moreno; Luis Kabongo; Helen V. Diez; Alejandro García Alonso. Interactive Visualization of DICOM Volumetric Datasets in the Web - Providing VR Experiences within the Web Browser. Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications 2017, 108 -115.

AMA Style

Ander Arbelaiz, Aitor Moreno, Luis Kabongo, Helen V. Diez, Alejandro García Alonso. Interactive Visualization of DICOM Volumetric Datasets in the Web - Providing VR Experiences within the Web Browser. Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications. 2017; ():108-115.

Chicago/Turabian Style

Ander Arbelaiz; Aitor Moreno; Luis Kabongo; Helen V. Diez; Alejandro García Alonso. 2017. "Interactive Visualization of DICOM Volumetric Datasets in the Web - Providing VR Experiences within the Web Browser." Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications , no. : 108-115.

Conference paper
Published: 01 January 2017 in Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications
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ACS Style

Helen V. Diez; Aitor Moreno; Alejandro Garcia-Alonso. Interaction Challenges in the Development of a Fire Warden VR Training System using a HMD. Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications 2017, 84 -91.

AMA Style

Helen V. Diez, Aitor Moreno, Alejandro Garcia-Alonso. Interaction Challenges in the Development of a Fire Warden VR Training System using a HMD. Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications. 2017; ():84-91.

Chicago/Turabian Style

Helen V. Diez; Aitor Moreno; Alejandro Garcia-Alonso. 2017. "Interaction Challenges in the Development of a Fire Warden VR Training System using a HMD." Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications , no. : 84-91.

Book chapter
Published: 01 December 2016 in Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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This paper presents three required functionality when volume datasets are aimed to be visualized in ubiquitous platforms: (i) support of segmented volume datasets, (ii) navigation inside the volume and (iii) direct visualization of DICOM datasets. DICOM is the de-facto standard in the medical imaging field. The results shows that these functionalities can be achieved using the Volume Rendering component implemented in X3DOM in several web browsers in different platforms (from desktop computer to tablets and mobile phones).

ACS Style

Ander Arbelaiz; Aitor Moreno; Luis Kabongo; Alejandro García-Alonso. Volume Visualization Tools for Medical Applications in Ubiquitous Platforms. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2016, 443 -450.

AMA Style

Ander Arbelaiz, Aitor Moreno, Luis Kabongo, Alejandro García-Alonso. Volume Visualization Tools for Medical Applications in Ubiquitous Platforms. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering. 2016; ():443-450.

Chicago/Turabian Style

Ander Arbelaiz; Aitor Moreno; Luis Kabongo; Alejandro García-Alonso. 2016. "Volume Visualization Tools for Medical Applications in Ubiquitous Platforms." Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering , no. : 443-450.

Conference paper
Published: 22 July 2016 in Proceedings of the 21st International Conference on Web3D Technology
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This paper presents an interactive application addressed to training experts on occupational hazard prevention and more precisely in fire safety in buildings. The platform allows the simulation of fires throughout a building. The fire warden trainee has to deal with that fire by a) finding the safest evacuation route or b) putting the fire out. The simulated fire will react to the environment, propagating in different ways depending on several factors; air currents in the building, material of the floor and walls, furniture, etc. The heat release of different materials has to be studied for this purpose. The fire will also react in real time to the response of the trainee depending on the method used to put it out. BIM standards will be applied to the logistic of the simulation. Thanks to this work methodology the application is provided with precise information regarding the building. The application is developed using a multiplatform game engine, so it can be used either as a web player serious game or in immersive environments such as the Oculus Rift HMD. In this publication we discuss the work methodology planed to fulfil the aforementioned issues.

ACS Style

Helen V. Diez; Sara García; Andoni Mujika; Aitor Moreno; David Oyarzun. Virtual training of fire wardens through immersive 3D environments. Proceedings of the 21st International Conference on Web3D Technology 2016, 43 -50.

AMA Style

Helen V. Diez, Sara García, Andoni Mujika, Aitor Moreno, David Oyarzun. Virtual training of fire wardens through immersive 3D environments. Proceedings of the 21st International Conference on Web3D Technology. 2016; ():43-50.

Chicago/Turabian Style

Helen V. Diez; Sara García; Andoni Mujika; Aitor Moreno; David Oyarzun. 2016. "Virtual training of fire wardens through immersive 3D environments." Proceedings of the 21st International Conference on Web3D Technology , no. : 43-50.

Journal article
Published: 15 July 2016 in Multimedia Tools and Applications
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We present a real-time volume rendering component for the Web, which provides a set of illustrative and non-photorealistic styles. Volume data is used in many scientific disciplines, requiring the visualization of the inner data, features for enhancing extracted characteristics or even coloring the volume. The Medical Working Group of X3D published a volume rendering specification. The next step is to build a component that realizes the functionalities defined by the specification. We have designed and built a volume rendering component integrated in the X3DOM framework. This component allows content developers to use the X3D specification. It combines and applies multiple rendering styles to several volume data types, offering a suitable tool for declarative volume rendering on the Web. As we show in the result section, the proposed component can be used in many fields that requires the visualization of multi-dimensional data, such as in medical and scientific fields. Our approach is based on WebGL and X3DOM, providing content developers with an easy and flexible declarative way of sharing and visualizing volumetric content over the Web.

ACS Style

Ander Arbelaiz; Aitor Moreno; Luis Kabongo; Alejandro García-Alonso. X3DOM volume rendering component for web content developers. Multimedia Tools and Applications 2016, 76, 13425 -13454.

AMA Style

Ander Arbelaiz, Aitor Moreno, Luis Kabongo, Alejandro García-Alonso. X3DOM volume rendering component for web content developers. Multimedia Tools and Applications. 2016; 76 (11):13425-13454.

Chicago/Turabian Style

Ander Arbelaiz; Aitor Moreno; Luis Kabongo; Alejandro García-Alonso. 2016. "X3DOM volume rendering component for web content developers." Multimedia Tools and Applications 76, no. 11: 13425-13454.

Journal article
Published: 06 June 2016 in International Journal on Interactive Design and Manufacturing (IJIDeM)
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ACS Style

Aitor Moreno; Gorka Velez; Aitor Ardanza; Iñigo Barandiaran; Álvaro Ruíz De Infante; Raúl Chopitea. Virtualisation process of a sheet metal punching machine within the Industry 4.0 vision. International Journal on Interactive Design and Manufacturing (IJIDeM) 2016, 11, 365 -373.

AMA Style

Aitor Moreno, Gorka Velez, Aitor Ardanza, Iñigo Barandiaran, Álvaro Ruíz De Infante, Raúl Chopitea. Virtualisation process of a sheet metal punching machine within the Industry 4.0 vision. International Journal on Interactive Design and Manufacturing (IJIDeM). 2016; 11 (2):365-373.

Chicago/Turabian Style

Aitor Moreno; Gorka Velez; Aitor Ardanza; Iñigo Barandiaran; Álvaro Ruíz De Infante; Raúl Chopitea. 2016. "Virtualisation process of a sheet metal punching machine within the Industry 4.0 vision." International Journal on Interactive Design and Manufacturing (IJIDeM) 11, no. 2: 365-373.