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1 – 2 of 2J.A. Travieso-Rodriguez, R. Jerez-Mesa, Jordi Llumà, Giovanni Gomez-Gras and Oriol Casadesus
The aim of this paper is to analyze the mechanical properties of acrylonitrile-butadiene-styrene (ABS) parts manufactured through fused filament fabrication and compare these…
Abstract
Purpose
The aim of this paper is to analyze the mechanical properties of acrylonitrile-butadiene-styrene (ABS) parts manufactured through fused filament fabrication and compare these results to analogous ones obtained on polylactic acid (PLA) and PLA–wood specimens to contribute for a wider understanding of the different materials used for additive manufacturing.
Design/methodology/approach
With that aim, an experimental based on an L27 Taguchi array was used to combine the specific parameters taken into account in the study, namely, layer height, nozzle diameter, infill density, orientation and printing velocity. All samples were subjected to a four-point bending test performed according to the ASTM D6272 standard.
Findings
Young’s modulus, elastic limit, maximum stress and maximum deformation of every sample were computed and subjected to an analysis of variance. Results prove that layer height and nozzle diameter are the most significant factors that affect the mechanical resistance in pieces generated through additive manufacturing and subjected to bending loads, regardless of the material.
Practical implications
The best results were obtained by combining a layer height of 0.1 mm and a nozzle diameter of 0.6 mm. The comparison of materials evidenced that PLA and its composite version reinforced with wood particles present more rigidity than ABS, whereas the latter can experience further deflection before break.
Originality/value
This study is of interest for manufacturers that want to decide which is the best material to be applied for their application, as it derives in a practical technical recommendation of the best parameters that should be selected to treat the material during the fused filament fabrication process.
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Keywords
Jordi Perramon, Llorenç Bagur-Femenias and Oriol Amat
The purpose of this paper is to examine the motivations for the adoption of quality management practices (QMPs) and the effects exerted by the advanced management information…
Abstract
Purpose
The purpose of this paper is to examine the motivations for the adoption of quality management practices (QMPs) and the effects exerted by the advanced management information systems (AMIS) as mediating factors in a sector consisting of highly competitive companies with a high mortality rate in recent years: travel agencies.
Design/methodology/approach
The results were based on a survey completed by 185 travel agencies with less than 50 employees, covering over 5 per cent of the SME travel agencies in Spain. Structural equation modelling was used to analyse the links between the studied dimensions.
Findings
The findings indicate that QMPs have a positive, direct influence on the adoption of AMIS and that the adoption of AMIS has a positive, direct impact on financial performance. The results suggest that quality policies facilitate greater use of financial indicators but not in the use of non-financial indicators, where the key to better business performance lies.
Originality/value
Therefore, the results of this paper indicate that being proactive about quality practices can provide travel agencies a great number of benefits through the implementation of AMIS.
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