Zerrendatu honen arabera: egilea "d554142a7ef8d20d80b98988dbfed989"
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Analysis of axial crushing behaviour of unsaturated polyester and vinyl ester composites manufactured by out of die ultraviolet cured pultrusion
Sáenz Domínguez, Iván; Tena Merino, Iosu; Esnaola, Aritz; Sarrionandia, Mariasun; Aurrekoetxea, Jon (2018)This paper analyses the axial crushing behaviour and flexural properties of novel unsaturated polyester (UP) and vinyl ester (VE) composites, manufactured by out of die ultraviolet (UV) cured pultrusion. The relation between ... -
Continuous improvement framework to develop cultural change: case study, capital goods company
Unzueta, Gorka; Esnaola, Aritz; Eguren, Jose Alberto (Emerald Publishing Limited, 2020)In this study, a frame of reference was developed to adapt and execute a continuous improvement process (CIP) for reinforcing a continuous improvement (CI) culture in an organisation. The study was undertaken in a mature ... -
Definition of 3D Printing Parameters by the Design of Experiments to Characterise Carbon Fibre-Reinforced Polyamide
Unzueta, Gorka; Eguren, Jose Alberto; Esnaola, Aritz; Aurrekoetxea, Jon; Sukia Mendizabal, Itxaro (Springer, 2024)This paper presents the application of an advanced quality management tool, the design of experiments (DOE), in order to characterise a new material (carbon fibre-reinforced polyamide) used in the 3D printing process. The ... -
Desarrollo de estructuras de impacto en materiales compuestos para vehículos ligeros
Esnaola, Aritz (Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2016)Environmental concerns are increasing within the industy, especially in the automotive industry. On one hand, they are making efforts to reduce the CO2 emissions and on the other hand, they are working in the development ... -
Design and characterisation of cellular composite structures for automotive crashboxes manufactured by out of die ultraviolet cured pultrusion
Sáenz Domínguez, Iván; Tena Merino, Iosu; Esnaola, Aritz; Sarrionandia, Mariasun; Aurrekoetxea, Jon (Elsevier B.V., 2019-03-01)The present paper analyses the feasibility of designing a honeycomb-like crash-box, as a cellular structure, based on data obtained from the characterisation of the building block. In order to generalise the conclusions ... -
Design, manufacturing and testing of 3D printed variable-stiffness laminates for improved open-hole tensile behaviour
Iragi, Mikel; Esnaola, Aritz; Morales, Unai; Aurrekoetxea, Jon; Aretxabaleta, Laurentzi (Elsevier, 2023) -
Development and validation of an automatic manufacturing process for fiberglass composites
Esnaola, Aritz (Dyna Publishing, 2023)Fiberglass reinforced polymeric composites are ideal for various applications due to their mechanical properties and lightweight. However, nowadays many fiberglass reinforced composite manufacturing processes are manual, ... -
Development of Flame-Retardant Polylactic Acid Formulations for Additive Manufacturing
Sukia Mendizabal, Itxaro; Esnaola, Aritz (MDPI, 2024) -
Efecto de la separación fibra-matriz sobre las propiedades mecánicas de una viga forjada en poliamida reforzada con fibra de vidrio
Baskaran, Maider; Morales, Unai; Esnaola, Aritz; Aretxabaleta, Laurentzi; Aurrekoetxea, Jon; Olaziregi Cuevas, Udane (Scipedia, 2022)In the present work, ribbed beams have been manufactured by forging fiberglassreinforced polyamide using two different temperatures. The higher processing temperature studied (300 ºC) ensures the filling of the mold in the ... -
The effect of cross-section geometry on crushing behaviour of 3D printed continuous carbon fibre reinforced polyamide profiles
Morales, Unai; Esnaola, Aritz; Iragi, Mikel; Aretxabaleta, Laurentzi; Aurrekoetxea, Jon (Elsevier, 2021)The present study has analysed the effect of cross-section geometry and the printing pattern of continuous carbon reinforced polyamide on the axial and radial crushing behaviour. Each geometry and printing pattern generated ... -
Evaluation of the Maturity Level of Continuous Improvement Based on Improvement Routines: A Case Study of SMEs of Capital Goods
Unzueta, Gorka; Esnaola, Aritz; Eguren, Jose Alberto (Springer, 2022)This study presents an analysis of implementation and assessment of a frame of reference to adapt and execute an evolutionary continuous improvement process (CIP) in a mature small- and medium-sized enterprise (SME) that ... -
Framework to evaluate continuous improvement process efficacy: a case study of a capital goods company
Unzueta, Gorka; Esnaola, Aritz; Eguren, Jose Alberto (2020)Purpose: This document describes a continuous improvement process assessment system (CIPAS). A continuous improvement process (CIP) was developed to progress through the levels of continuous improvement (CI) defined by ... -
Impact behaviour of bio-inspired sandwich panels integrally manufactured from 3D printed continuous carbon fibre reinforced polyamide
Sukia Mendizabal, Itxaro; Esnaola, Aritz; Erice, Borja; Aurrekoetxea, Jon (2024)This paper studies the effect of several design parameters on the impact performance of fully 3D printed sandwich panels with a core cell unit inspired by the trabecular structure of the forewing of a beetle. The key finding ... -
Integrating additively manufactured continuous glass fibre inserts in compression moulding: A novel approach to mitigating fibre–matrix separation effect
Olaziregi Cuevas, Udane; Baskaran, Maider; Esnaola, Aritz; Aurrekoetxea, Jon (Elsevier, 2026)This study presents a novel approach to mitigate fibre–matrix separation defects in compression-moulded thermoplastic composite components by integrating additively manufactured (3D-printed) continuous fibre-reinforced ... -
Modelling of an Additive 3D-Printing Process Based on Design of Experiments Methodology
Eguren, Jose Alberto; Esnaola, Aritz; Unzueta, Gorka (Technical University of Kosice, Slovakia, 2020)Purpose: The implementation of additive manufacturing (AM) or 3D-printer manufacturing for technical prototyping, preproduction series and short production series can bring benefits in terms of reducing cost and time to ... -
Opportunities and incentives for Remanufacturing in the Basque Country
Eguren, Jose Alberto; Justel Lozano, Daniel; Iriarte, Ion; Esnaola, Aritz (Elsevier B.V., 2018)Remanufacturing is a business model that helps the development of the circular economy. There are numerous successful examples of remanufactured products in different industrial sectors of Europe and US. Obtaining the ... -
OPTIBODY: A New Structural Design Focused in Safety
Esnaola, Aritz (SAE International, 2013)With electric vehicles becoming more and more popular, the classic “general purpose” vehicle concept is changing to a “dedicated vehicle” concept. Light trucks for goods delivery in cities are one of the examples. The ... -
Optimization of the semi-hexagonal geometry of a composite crush structure by finite element analysis
Esnaola, Aritz; Aurrekoetxea, Jon; Gallego, Ivan; Ulacia, Ibai; Elguezabal Lazcano, Borja (Elsevier, 2016)In the present paper a numerical model for predicting the crushing behaviour of semi-hexagonal E-glass/polyester composite structures has been developed. Qualitative and quantitative analysis have shown that the results ... -
Quasi-static and dynamic crush behaviour of 3D printed thin-walled profiles reinforced with continuous carbon and glass fibres
Morales, Unai; Esnaola, Aritz; Iragi, Mikel; Aretxabaleta, Laurentzi; Aurrekoetxea, Jon (Elsevier, 2021)The present paper investigates the suitability of cFF printed material and technologies for crashworthiness applications. To this end, the quasi-static and dynamic crush behaviour of 3D printed thin-walled hollow profiles ...
