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During the last decades, in industrial applications the integration of electronic components shifted its focus on reliability. In fact, the high thermal power generated by electronic systems can cause system failure and even irreversible damage, due to their ongoing miniaturization and complexity. This work aims to explore solutions for the optimal design of passive heat sinks to be fabricated by additive manufacturing. The methodology involves the use of CAE and thermal topological optimization tools, to analyse the thermal loads and the heat sink performance, and consequently to optimize the heat sink design. A simple case study allows to compare three different geometrical heat sink configurations, corresponding to the optimal solutions for three different sets of constraints, namely only volume constraints, laser-powder bed process design and internal heat generation. The predominant role of heat conduction is demonstrated and significant weight reduction and high efficiency are combined in topology optimized passive heat sinks to be fabricated by AM.
Adriano Nicola Pilagatti; Gabriele Piscopo; Eleonora Atzeni; Luca Iuliano; Alessandro Salmi. Design of additive manufactured passive heat sinks for electronics. Journal of Manufacturing Processes 2021, 64, 878 -888.
AMA StyleAdriano Nicola Pilagatti, Gabriele Piscopo, Eleonora Atzeni, Luca Iuliano, Alessandro Salmi. Design of additive manufactured passive heat sinks for electronics. Journal of Manufacturing Processes. 2021; 64 ():878-888.
Chicago/Turabian StyleAdriano Nicola Pilagatti; Gabriele Piscopo; Eleonora Atzeni; Luca Iuliano; Alessandro Salmi. 2021. "Design of additive manufactured passive heat sinks for electronics." Journal of Manufacturing Processes 64, no. : 878-888.
A study of the abrasive fluidized bed (AFB) finishing process was conducted to quantify the obtainable improvement of the fatigue behaviour of Ti6Al4V parts produced by electron beam melting (EBM). Axial-symmetric EBM samples were rotated at high speed inside a fluidized bed of stainless-steel media. The effects of the treatment time and the rotational speed on morphological features and fatigue life of the EBM samples were investigated. Outcomes showed that the improvement in surface properties induced by the AFB finishing process determined an increase up to 50% in fatigue life and a shift of the S-N curve.
Eleonora Atzeni; Gianluca Rubino; Alessandro Salmi; Federica Trovalusci. Abrasive fluidized bed finishing to improve the fatigue behaviour of Ti6Al4V parts fabricated by electron beam melting. The International Journal of Advanced Manufacturing Technology 2020, 110, 557 -567.
AMA StyleEleonora Atzeni, Gianluca Rubino, Alessandro Salmi, Federica Trovalusci. Abrasive fluidized bed finishing to improve the fatigue behaviour of Ti6Al4V parts fabricated by electron beam melting. The International Journal of Advanced Manufacturing Technology. 2020; 110 (1-2):557-567.
Chicago/Turabian StyleEleonora Atzeni; Gianluca Rubino; Alessandro Salmi; Federica Trovalusci. 2020. "Abrasive fluidized bed finishing to improve the fatigue behaviour of Ti6Al4V parts fabricated by electron beam melting." The International Journal of Advanced Manufacturing Technology 110, no. 1-2: 557-567.
Laser Powder-based Directed Energy Deposition (LP-DED) process is a cutting-edge Additive Manufacturing (AM) technology for metal part repair and production. The disruptive potentialities of LP-DED are nowadays limited by the difficulty in the identification of the optimized set of process parameters, typically obtained from long and expensive experimental trials. In this work, a thermal simulation tool able to predict material deposition behaviour is developed using a finite element code. An original method is defined to model the material addition and energy flow. The forecasting capabilities of the model in terms of penetration depth and track dimensions are evaluated by comparing the numerical outcomes with experimental data.
Gabriele Piscopo; Eleonora Atzeni; Alessandro Salmi; Luca Iuliano; Andrea Gatto; Giovanni Marchiandi; Andrea Balestrucci. Mesoscale modelling of laser powder-based directed energy deposition process. Procedia CIRP 2020, 88, 393 -398.
AMA StyleGabriele Piscopo, Eleonora Atzeni, Alessandro Salmi, Luca Iuliano, Andrea Gatto, Giovanni Marchiandi, Andrea Balestrucci. Mesoscale modelling of laser powder-based directed energy deposition process. Procedia CIRP. 2020; 88 ():393-398.
Chicago/Turabian StyleGabriele Piscopo; Eleonora Atzeni; Alessandro Salmi; Luca Iuliano; Andrea Gatto; Giovanni Marchiandi; Andrea Balestrucci. 2020. "Mesoscale modelling of laser powder-based directed energy deposition process." Procedia CIRP 88, no. : 393-398.
Metal components produced by Additive Manufacturing (AM) technologies usually exhibit a rough surface, that in certain applications can result detrimental for the part’s functionality. Thus, it is of great interest to study the finishing processes that can be applied to the surfaces, both external and internal, of AM components. The aim of this work is the evaluation of the capabilities of a vibro-finishing process in the treatment of samples produced by Laser-Powder Bed Fusion (L-PBF) from AlSi10Mg powders. In this research, the abrasive media is identified, and the surface quality improvement is analysed in terms of surface roughness and modifications induced by the finishing treatment (i.e., edge rounding, material loss) against finishing duration. The cost of the treatment is also evaluated.
Eleonora Atzeni; Andrea Balestrucci; Angioletta R. Catalano; Luca Iuliano; Paolo C. Priarone; Alessandro Salmi; Luca Settineri. Performance assessment of a vibro-finishing technology for additively manufactured components. Procedia CIRP 2020, 88, 427 -432.
AMA StyleEleonora Atzeni, Andrea Balestrucci, Angioletta R. Catalano, Luca Iuliano, Paolo C. Priarone, Alessandro Salmi, Luca Settineri. Performance assessment of a vibro-finishing technology for additively manufactured components. Procedia CIRP. 2020; 88 ():427-432.
Chicago/Turabian StyleEleonora Atzeni; Andrea Balestrucci; Angioletta R. Catalano; Luca Iuliano; Paolo C. Priarone; Alessandro Salmi; Luca Settineri. 2020. "Performance assessment of a vibro-finishing technology for additively manufactured components." Procedia CIRP 88, no. : 427-432.
Residual stresses (RS) of great magnitude are usually present in parts produced by Laser Powder Bed Fusion (PBF-LB), mainly owing to the extreme temperature gradients and high cooling rates involved in the process. Those “hidden” stresses can be detrimental to a part’s mechanical properties and fatigue life; therefore, it is crucial to know their magnitude and orientation. The hole-drilling strain-gage method was used to determine the RS magnitude and direction-depth profiles. Cuboid specimens in the as-built state, and after standard solution annealing and ageing heat treatment conditions, were prepared to study the RS evolution throughout the heat treatment stages. Measurements were performed on the top and lateral surfaces. In the as-built specimens, tensile stresses of ~400 MPa on the top and above 600 MPa on the lateral surface were obtained. On the lateral surface, RS anisotropy was noticed, with the horizontally aligned stresses being three times lower than the vertically aligned. RS decreased markedly after the first heat treatment. On heat-treated specimens, magnitude oscillations were observed. By microstructure analysis, the presence of carbides was verified, which is a probable root for the oscillations. Furthermore, compressive stresses immediate to the surface were obtained in heat-treated specimens, which is not in agreement with the typical characteristics of parts fabricated by PBF-LB, i.e., tensile stresses at the surface and compressive stresses in the part’s core.
Rafael Barros; Francisco J. G. Silva; Ronny M. Gouveia; Abdollah Saboori; Giulio Marchese; Sara Biamino; Alessandro Salmi; Eleonora Atzeni. Laser Powder Bed Fusion of Inconel 718: Residual Stress Analysis Before and After Heat Treatment. Metals 2019, 9, 1290 .
AMA StyleRafael Barros, Francisco J. G. Silva, Ronny M. Gouveia, Abdollah Saboori, Giulio Marchese, Sara Biamino, Alessandro Salmi, Eleonora Atzeni. Laser Powder Bed Fusion of Inconel 718: Residual Stress Analysis Before and After Heat Treatment. Metals. 2019; 9 (12):1290.
Chicago/Turabian StyleRafael Barros; Francisco J. G. Silva; Ronny M. Gouveia; Abdollah Saboori; Giulio Marchese; Sara Biamino; Alessandro Salmi; Eleonora Atzeni. 2019. "Laser Powder Bed Fusion of Inconel 718: Residual Stress Analysis Before and After Heat Treatment." Metals 9, no. 12: 1290.
Directed Energy Deposition (DED) is one of the most promising additive manufacturing technologies for the production of large metal components and because of the possibility it offers of adding material to an existing part. Nevertheless, DED is considered premature for industrial production, because the identification of the process parameters may be a very complex task. An original hybrid analytic-numerical model, related to the physics of laser powder DED, is presented in this work in order to evaluate easily and quickly the effects of different sets of process parameters on track deposition outcomes. In the proposed model, the volume of the deposited material is modeled as a function of process parameters using a synergistic interaction between regression-based analytic models and a novel element activation strategy. The model is implemented in a Finite Element (FE) software, and the forecasting capability is assessed by comparing the numerical results with experimental data from the literature. The predicted results show a reasonable correlation with the experimental dimensions of the melt pool and demonstrate that the proposed model may be used for prediction purposes, if a specific set of process parameters that guarantees adequate adhesion of the deposited track to the substrate is introduced.
Gabriele Piscopo; Eleonora Atzeni; Alessandro Salmi. A Hybrid Modeling of the Physics-Driven Evolution of Material Addition and Track Generation in Laser Powder Directed Energy Deposition. Materials 2019, 12, 2819 .
AMA StyleGabriele Piscopo, Eleonora Atzeni, Alessandro Salmi. A Hybrid Modeling of the Physics-Driven Evolution of Material Addition and Track Generation in Laser Powder Directed Energy Deposition. Materials. 2019; 12 (17):2819.
Chicago/Turabian StyleGabriele Piscopo; Eleonora Atzeni; Alessandro Salmi. 2019. "A Hybrid Modeling of the Physics-Driven Evolution of Material Addition and Track Generation in Laser Powder Directed Energy Deposition." Materials 12, no. 17: 2819.
Alessandro Salmi; Eleonora Atzeni. Residual stress analysis of thin AlSi10Mg parts produced by Laser Powder Bed Fusion. Virtual and Physical Prototyping 2019, 15, 49 -61.
AMA StyleAlessandro Salmi, Eleonora Atzeni. Residual stress analysis of thin AlSi10Mg parts produced by Laser Powder Bed Fusion. Virtual and Physical Prototyping. 2019; 15 (1):49-61.
Chicago/Turabian StyleAlessandro Salmi; Eleonora Atzeni. 2019. "Residual stress analysis of thin AlSi10Mg parts produced by Laser Powder Bed Fusion." Virtual and Physical Prototyping 15, no. 1: 49-61.
Nowadays, 3D printing is recognized as one of the key technologies that enables the distributed manufacturing adoption. However, inexperienced people might perceive this technology as far from easy user-usability because of evident aesthetic defects on 3D printed parts. In this paper, an indicator-based methodology is proposed for the assessment and the ranking of the aesthetic capability of 3D printers by evaluating the ability of a 3D printer to reproduce a reference part without defects. The reference part includes several geometric features that characterize most of as-built aesthetic defects. In addition, a benchmarking analysis was carried out to show an example of the methodology applied to three different machines.
Manuela Galati; Paolo Minetola; Giovanni Marchiandi; Eleonora Atzeni; Flaviana Calignano; Alessandro Salmi; Luca Iuliano. A methodology for evaluating the aesthetic quality of 3D printed parts. Procedia CIRP 2019, 79, 95 -100.
AMA StyleManuela Galati, Paolo Minetola, Giovanni Marchiandi, Eleonora Atzeni, Flaviana Calignano, Alessandro Salmi, Luca Iuliano. A methodology for evaluating the aesthetic quality of 3D printed parts. Procedia CIRP. 2019; 79 ():95-100.
Chicago/Turabian StyleManuela Galati; Paolo Minetola; Giovanni Marchiandi; Eleonora Atzeni; Flaviana Calignano; Alessandro Salmi; Luca Iuliano. 2019. "A methodology for evaluating the aesthetic quality of 3D printed parts." Procedia CIRP 79, no. : 95-100.
The adoption of metal powder-based laser process (L-PBF) for industrial applications continues to widen, due to an increasing knowledge on additive processes and the availability of new systems for industrial production. The use of L-PBF processes requires a deeper investigation and comparison on mechanical properties of conventional and additive parts. For instance, metal parts produced by L-PBF could require additional machining operations, which alter the stress state of additive components. In this work, the effect of machining operations on the residual stress state of an AlSi10Mg component produced by L-PBF is investigated by means of the semi destructive hole-drilling method.
Gabriele Piscopo; Eleonora Atzeni; Flaviana Calignano; Manuela Galati; Luca Iuliano; Paolo Minetola; Alessandro Salmi. Machining induced residual stresses in AlSi10Mg component produced by Laser Powder Bed Fusion (L-PBF). Procedia CIRP 2019, 79, 101 -106.
AMA StyleGabriele Piscopo, Eleonora Atzeni, Flaviana Calignano, Manuela Galati, Luca Iuliano, Paolo Minetola, Alessandro Salmi. Machining induced residual stresses in AlSi10Mg component produced by Laser Powder Bed Fusion (L-PBF). Procedia CIRP. 2019; 79 ():101-106.
Chicago/Turabian StyleGabriele Piscopo; Eleonora Atzeni; Flaviana Calignano; Manuela Galati; Luca Iuliano; Paolo Minetola; Alessandro Salmi. 2019. "Machining induced residual stresses in AlSi10Mg component produced by Laser Powder Bed Fusion (L-PBF)." Procedia CIRP 79, no. : 101-106.
Additive manufacturing technologies are currently envisaged to boost the development of a next generation of microwave devices intended for satellite telecommunications. Due to their excellent electromagnetic and mechanical properties, metal waveguide components are key building blocks of several radio frequency (RF) systems used in these applications. This article reports the perspectives deriving from the use of laser powder bed fusion (L-PBF) technology to the production of high-performance microwave waveguide devices. A robust design of filters has been implemented in several prototypes manufactured in AlSi10Mg alloy. The corresponding measured performance confirm the applicability of the L-PBF process to the intended applications
Flaviana Calignano; Oscar Antonio Peverini; Giuseppe Addamo; Fabio Paonessa; Diego Manfredi; Manuela Galati; Alessandro Salmi; Eleonora Atzeni; Paolo Minetola; Luca Iuliano. High-performance microwave waveguide devices produced by laser powder bed fusion process. Procedia CIRP 2019, 79, 85 -88.
AMA StyleFlaviana Calignano, Oscar Antonio Peverini, Giuseppe Addamo, Fabio Paonessa, Diego Manfredi, Manuela Galati, Alessandro Salmi, Eleonora Atzeni, Paolo Minetola, Luca Iuliano. High-performance microwave waveguide devices produced by laser powder bed fusion process. Procedia CIRP. 2019; 79 ():85-88.
Chicago/Turabian StyleFlaviana Calignano; Oscar Antonio Peverini; Giuseppe Addamo; Fabio Paonessa; Diego Manfredi; Manuela Galati; Alessandro Salmi; Eleonora Atzeni; Paolo Minetola; Luca Iuliano. 2019. "High-performance microwave waveguide devices produced by laser powder bed fusion process." Procedia CIRP 79, no. : 85-88.
One of the main design constraints for additive manufacturing is the definition of downward-facing surfaces, which can lead to problems, like part failing or warping, during construction and poor surface quality. In this paper, a specific index has been defined to represent the surface quality of the downward-facing surfaces induced by the laser powder bed fusion (L-PBF) process. In order to validate the quality index, a design of experiment (DoE) that considers geometric parameters of the overhangs has been defined and carried out, and the quality of resulting surfaces has been evaluated using an optical scanning system. The statistical analysis (ANOVA) has allowed identifying the relationships between significant geometrical parameters and the quality index here proposed. [Submitted 5 April 2018; Accepted 27 August 2018]
Gabriele Piscopo; Alessandro Salmi; Eleonora Atzeni. On the quality of unsupported overhangs produced by laser powder bed fusion. International Journal of Manufacturing Research 2019, 14, 198 .
AMA StyleGabriele Piscopo, Alessandro Salmi, Eleonora Atzeni. On the quality of unsupported overhangs produced by laser powder bed fusion. International Journal of Manufacturing Research. 2019; 14 (2):198.
Chicago/Turabian StyleGabriele Piscopo; Alessandro Salmi; Eleonora Atzeni. 2019. "On the quality of unsupported overhangs produced by laser powder bed fusion." International Journal of Manufacturing Research 14, no. 2: 198.
The specific energy consumption of Additive Manufacturing (AM) unit processes for the production of metal parts could be much higher than that of more traditional manufacturing routes, such as machining. However, AM, due to its intrinsic process peculiarities, including the flexible realization of (almost) any kind of complex shape, has a great potential for improving the material use efficiency, with positive environmental impact benefits from the material production to the product use and disposal at the end of first life. Aim of this paper is to assess the role of the design choices on the environmental AM process sustainability. An integrated design methodology (accounting for the product re-design via topological optimization, the design of support structures, and the design of allowances and features for post-AM finishing operations) for components produced by means of laser powder bed fusion processes is considered. One resource (the cumulated energy demand) and one emission (carbon dioxide) are assumed as metrics for the impact assessment across the product life cycle. The results demonstrate the importance of a proper design for AM to improve the overall energy and emission saving potential.
Paolo C. Priarone; Vincenzo Lunetto; Eleonora Atzeni; Alessandro Salmi. Laser powder bed fusion (L-PBF) additive manufacturing: On the correlation between design choices and process sustainability. Procedia CIRP 2018, 78, 85 -90.
AMA StylePaolo C. Priarone, Vincenzo Lunetto, Eleonora Atzeni, Alessandro Salmi. Laser powder bed fusion (L-PBF) additive manufacturing: On the correlation between design choices and process sustainability. Procedia CIRP. 2018; 78 ():85-90.
Chicago/Turabian StylePaolo C. Priarone; Vincenzo Lunetto; Eleonora Atzeni; Alessandro Salmi. 2018. "Laser powder bed fusion (L-PBF) additive manufacturing: On the correlation between design choices and process sustainability." Procedia CIRP 78, no. : 85-90.
Laser powder bed fusion (L-PBF) is an additive manufacturing (AM) process that allows to build full dense metal complex part. However, despite the obvious benefits of L-PBF process, it is affected by specific technological drawbacks and it suffers from issues regarding design support tools. In order to fully exploit the advantages of L-PBF, it is necessary to know the technological constraints, such as material availability and the need to minimise the support structures. In this paper, an integrated design procedure that involves topology optimisation, design for laser powder bed fusion rules and finishing requirements is presented in order to define practical guidelines for successful AM of metal parts. The procedure is tested using a case study to prove the effectiveness of the proposed approach.
Alessandro Salmi; Flaviana Calignano; Manuela Galati; Eleonora Atzeni. An integrated design methodology for components produced by laser powder bed fusion (L-PBF) process. Virtual and Physical Prototyping 2018, 13, 191 -202.
AMA StyleAlessandro Salmi, Flaviana Calignano, Manuela Galati, Eleonora Atzeni. An integrated design methodology for components produced by laser powder bed fusion (L-PBF) process. Virtual and Physical Prototyping. 2018; 13 (3):191-202.
Chicago/Turabian StyleAlessandro Salmi; Flaviana Calignano; Manuela Galati; Eleonora Atzeni. 2018. "An integrated design methodology for components produced by laser powder bed fusion (L-PBF) process." Virtual and Physical Prototyping 13, no. 3: 191-202.
Low-cost entry-level 3D printers suffer from reduced optimization, that is a consequence of development cost savings. A student challenge was used to modify four Prusa i3 machines with the aim of enhancing the design and performances by means of self-replicated parts. The challenge results were assessed through benchmarking of the four modified 3D printers, whose dimensional accuracy was evaluated by means of CMM measurements of 3D printed replicas of a reference part. The ISO IT grades related to the dimensional quality of the replicas were considered in the analysis of the CMM measures for the challenge assessment.
Paolo Minetola; Manuela Galati; Luca Iuliano; Eleonora Atzeni; Alessandro Salmi. The Use of Self-replicated Parts for Improving the Design and the Accuracy of a Low-cost 3D Printer. Procedia CIRP 2018, 67, 203 -208.
AMA StylePaolo Minetola, Manuela Galati, Luca Iuliano, Eleonora Atzeni, Alessandro Salmi. The Use of Self-replicated Parts for Improving the Design and the Accuracy of a Low-cost 3D Printer. Procedia CIRP. 2018; 67 ():203-208.
Chicago/Turabian StylePaolo Minetola; Manuela Galati; Luca Iuliano; Eleonora Atzeni; Alessandro Salmi. 2018. "The Use of Self-replicated Parts for Improving the Design and the Accuracy of a Low-cost 3D Printer." Procedia CIRP 67, no. : 203-208.
Alessandro Salmi; Gabriele Piscopo; Eleonora Atzeni; Paolo Minetola; Luca Iuliano. On the Effect of Part Orientation on Stress Distribution in AlSi10Mg Specimens Fabricated by Laser Powder Bed Fusion (L-PBF). Procedia CIRP 2018, 67, 191 -196.
AMA StyleAlessandro Salmi, Gabriele Piscopo, Eleonora Atzeni, Paolo Minetola, Luca Iuliano. On the Effect of Part Orientation on Stress Distribution in AlSi10Mg Specimens Fabricated by Laser Powder Bed Fusion (L-PBF). Procedia CIRP. 2018; 67 ():191-196.
Chicago/Turabian StyleAlessandro Salmi; Gabriele Piscopo; Eleonora Atzeni; Paolo Minetola; Luca Iuliano. 2018. "On the Effect of Part Orientation on Stress Distribution in AlSi10Mg Specimens Fabricated by Laser Powder Bed Fusion (L-PBF)." Procedia CIRP 67, no. : 191-196.
Alessandro Salmi; Eleonora Atzeni. History of residual stresses during the production phases of AlSi10Mg parts processed by powder bed additive manufacturing technology. Virtual and Physical Prototyping 2017, 12, 153 -160.
AMA StyleAlessandro Salmi, Eleonora Atzeni. History of residual stresses during the production phases of AlSi10Mg parts processed by powder bed additive manufacturing technology. Virtual and Physical Prototyping. 2017; 12 (2):153-160.
Chicago/Turabian StyleAlessandro Salmi; Eleonora Atzeni. 2017. "History of residual stresses during the production phases of AlSi10Mg parts processed by powder bed additive manufacturing technology." Virtual and Physical Prototyping 12, no. 2: 153-160.
The combination of additive manufacturing principles and electron beam (EB) technology allows complex metal parts, featuring excellent quality material, to be produced, whenever traditional methods are expensive or difficult to apply. Today, the optimization of process parameters, for a given metal powder, is generally attained through an empirical trial and error approach. Process simulation can be used as a tool for decision-making and process optimization, since a virtual analysis can help to facilitate the possibility of exploring "what if" scenarios. In this work, a new type of modelling has been introduced for energy source and powder material properties and it has been included in a thermal numerical model in order to improve the effectiveness and reliability of Electon Beam Melting (EBM) FE simulation. Several specific subroutines have been developed to automatically calculate the powder properties as temperature functions, and to consider the position of the beam during scanning as well as the material state changes from powder to liquid in the melting phase and from liquid to solid during cooling. A comparison of the numerical results and experimental data taken from literature has shown a good forecasting capability. The average deviations of the simulation from an experimental scan line width have been found to be below about 15%
Manuela Galati; Luca Iuliano; Alessandro Salmi; Eleonora Atzeni. Modelling energy source and powder properties for the development of a thermal FE model of the EBM additive manufacturing process. Additive Manufacturing 2017, 14, 49 -59.
AMA StyleManuela Galati, Luca Iuliano, Alessandro Salmi, Eleonora Atzeni. Modelling energy source and powder properties for the development of a thermal FE model of the EBM additive manufacturing process. Additive Manufacturing. 2017; 14 ():49-59.
Chicago/Turabian StyleManuela Galati; Luca Iuliano; Alessandro Salmi; Eleonora Atzeni. 2017. "Modelling energy source and powder properties for the development of a thermal FE model of the EBM additive manufacturing process." Additive Manufacturing 14, no. : 49-59.
This paper provides an overview on the main additive manufacturing/3D printing technologies suitable for many satellite applications and, in particular, radio-frequency components. In fact, nowadays they have become capable of producing complex net-shaped or nearly net-shaped parts in materials that can be directly used as functional parts, including polymers, metals, ceramics, and composites. These technologies represent the solution for low-volume, high-value, and highly complex parts and products.
Flaviana Calignano; Diego Manfredi; Elisa Paola Ambrosio; Sara Biamino; Mariangela Lombardi; Eleonora Atzeni; Alessandro Salmi; Paolo Minetola; Luca Iuliano; Paolo Fino. Overview on Additive Manufacturing Technologies. Proceedings of the IEEE 2017, 105, 593 -612.
AMA StyleFlaviana Calignano, Diego Manfredi, Elisa Paola Ambrosio, Sara Biamino, Mariangela Lombardi, Eleonora Atzeni, Alessandro Salmi, Paolo Minetola, Luca Iuliano, Paolo Fino. Overview on Additive Manufacturing Technologies. Proceedings of the IEEE. 2017; 105 (4):593-612.
Chicago/Turabian StyleFlaviana Calignano; Diego Manfredi; Elisa Paola Ambrosio; Sara Biamino; Mariangela Lombardi; Eleonora Atzeni; Alessandro Salmi; Paolo Minetola; Luca Iuliano; Paolo Fino. 2017. "Overview on Additive Manufacturing Technologies." Proceedings of the IEEE 105, no. 4: 593-612.
Andrea Gatto; Luca Iuliano; Eleonora Atzeni; Paolo Minetola; Alessandro Salmi. Dental Failure Analysis: The Need of a Comprehensive Failure Classification. Procedia CIRP 2017, 62, 429 -434.
AMA StyleAndrea Gatto, Luca Iuliano, Eleonora Atzeni, Paolo Minetola, Alessandro Salmi. Dental Failure Analysis: The Need of a Comprehensive Failure Classification. Procedia CIRP. 2017; 62 ():429-434.
Chicago/Turabian StyleAndrea Gatto; Luca Iuliano; Eleonora Atzeni; Paolo Minetola; Alessandro Salmi. 2017. "Dental Failure Analysis: The Need of a Comprehensive Failure Classification." Procedia CIRP 62, no. : 429-434.
During the Selective Laser Melting (SLM) process, the scanned layers are subjected to rapid thermal cycles. Steep temperature gradients generate residual stresses. Residual stresses can be detrimental to the proper functioning and the structural integrity of built parts. In this paper, the semi-destructive hole-drilling method has been used to measure the residual stresses on AISi10Mg parts after building, stress relieving and shot-peening, respectively. The outcomes have shown the presence, on the as-built components, of high tensile stresses that the usual post-processing operations are not able to minimize. The adopted method has proved to be a suitable tool to identify optimal process parameters for each step of the production cycl
Alessandro Salmi; Eleonora Atzeni; Luca Iuliano; Manuela Galati. Experimental Analysis of Residual Stresses on AlSi10Mg Parts Produced by Means of Selective Laser Melting (SLM). Procedia CIRP 2017, 62, 458 -463.
AMA StyleAlessandro Salmi, Eleonora Atzeni, Luca Iuliano, Manuela Galati. Experimental Analysis of Residual Stresses on AlSi10Mg Parts Produced by Means of Selective Laser Melting (SLM). Procedia CIRP. 2017; 62 ():458-463.
Chicago/Turabian StyleAlessandro Salmi; Eleonora Atzeni; Luca Iuliano; Manuela Galati. 2017. "Experimental Analysis of Residual Stresses on AlSi10Mg Parts Produced by Means of Selective Laser Melting (SLM)." Procedia CIRP 62, no. : 458-463.