Numerical modeling and testing of mechanical behavior of AM Titanium alloy bracket for aerospace applications

Brusa, Eugenio; Sesana, Raffaella; Ossola, Enrico

doi:10.1016/j.prostr.2017.07.166

Cited by 33 publications

(13 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These manufacturing issues can be more easily addressed by switching to Additive Manufacturing (AM) techniques. In fact, AM allows to fabricate complex geometries, resulting in improved performance and mass savings, especially when coupled with optimization tools [31], or in integrated systems, where assemblies are fabricated in one single process. Moreover, AM processes are in general characterized by reduced lead time and costs, especially for small lots, making AM particularly suited for prototyping or customized products [32].…”

Section: Manufacturing Techniquesmentioning

confidence: 99%

Geodesic domes for planetary exploration

Ossola

Brusa

Sesana

2020

Curved and Layered Structures

Self Cite

View full text Add to dashboard Cite

Venus and the Ocean Worlds are emerging areas of interest for space exploration, as they can potentially host, or have hosted, conditions compatible with life. Landers and probes for in-situ exploration, however, must deal with very high external pressure, due to the environmental conditions, often resulting in thick and heavy structures. Robust, reinforced shell structures can provide a lightweight solution for the primary structure. In this frame, the isogrid layout is already a standard in aerospace, especially for flat panels or cylindrical shells. In this paper, isogrid-stiffened hemispherical shells, or “geodesic domes”, are described, focusing on the case of a concept of a Venus lander. Early design methods for both plain and geodesic domes subjected to external pressure are presented, providing design equations. Additive Manufacturing is identified as the key technology for fabricating metallic geodesic domes, due to the complexity of the internal features. Moreover, it allows to fabricate ports and integrated thermostructural systems in the same process, potentially resulting in improved performance or cost and schedule savings.

show abstract

Section: Manufacturing Techniquesmentioning

confidence: 99%

Geodesic domes for planetary exploration

Ossola

Brusa

Sesana

2020

Curved and Layered Structures

Self Cite

View full text Add to dashboard Cite

show abstract

“…Additive Manufacturing (AM) processes enable the transition from analog to digital manufacturing, using Computer Aided Design (CAD) software to encourage the 3D objects are being built layer-by-layer via direct material deposition onto the substrate. In contrast to the conventional subtractive and formative manufacturing processes, such as machining operations that produce the parts by material removal from a bulk, AM processes create 3D components by adding and stacking layers of material onto each other [ 1 , 2 , 3 ]. Conceptualization freedom, rapid prototyping and capability to create complex shapes and geometries are the superior AM advantages that in corollary to these, AM processes recently are widely used in aerospace [ 4 ], bio-engineering [ 5 ], automotive and product development [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

An Overview of Additive Manufacturing Technologies—A Review to Technical Synthesis in Numerical Study of Selective Laser Melting

et al. 2020

Self Cite

View full text Add to dashboard Cite

Additive Manufacturing (AM) processes enable their deployment in broad applications from aerospace to art, design, and architecture. Part quality and performance are the main concerns during AM processes execution that the achievement of adequate characteristics can be guaranteed, considering a wide range of influencing factors, such as process parameters, material, environment, measurement, and operators training. Investigating the effects of not only the influential AM processes variables but also their interactions and coupled impacts are essential to process optimization which requires huge efforts to be made. Therefore, numerical simulation can be an effective tool that facilities the evaluation of the AM processes principles. Selective Laser Melting (SLM) is a widespread Powder Bed Fusion (PBF) AM process that due to its superior advantages, such as capability to print complex and highly customized components, which leads to an increasing attention paid by industries and academia. Temperature distribution and melt pool dynamics have paramount importance to be well simulated and correlated by part quality in terms of surface finish, induced residual stress and microstructure evolution during SLM. Summarizing numerical simulations of SLM in this survey is pointed out as one important research perspective as well as exploring the contribution of adopted approaches and practices. This review survey has been organized to give an overview of AM processes such as extrusion, photopolymerization, material jetting, laminated object manufacturing, and powder bed fusion. And in particular is targeted to discuss the conducted numerical simulation of SLM to illustrate a uniform picture of existing nonproprietary approaches to predict the heat transfer, melt pool behavior, microstructure and residual stresses analysis.

show abstract

“…Titanium and its alloys are very attractive materials for many engineering applications. They are used, among others, in the aerospace, automotive, energy, shipbuilding, chemical and food industries, as well as in medicine [ 1 , 2 , 3 , 4 ]. Ti-6Al-4V alloy is the most commonly used and widely described in the literature.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Different Thermo-Chemical Treatments Methods of Ti-6Al-4V Alloy in Terms of Tribological and Corrosion Properties

et al. 2020

View full text Add to dashboard Cite

Titanium and its alloys are characterized by high mechanical strength, good corrosion resistance, high biocompatibility and relatively low Young’s modulus. For many years, one of the most commonly used and described titanium alloys has been Ti-6Al-4V. The great interest in this two-phase titanium alloy is due to the broad possibilities of shaping its mechanical and physico-chemical properties using modern surface engineering techniques. The high coefficient of friction and tendency to galling are the most important drawbacks limiting the application of this material in many areas. In this regard, such methods as carburizing, nitriding, oxidation, and the synthesis of thin films using physical vapor deposition (PVD) and chemical vapor deposition (CVD) methods may significantly improve the tribological properties of titanium alloys. The influence of thermo-chemical treatment (oxidation, carburizing and nitriding) on tribological properties and corrosion resistance of Ti-6Al-4V alloy is presented in this paper. The results include metallographic studies, analysis of tribological and mechanical properties and corrosion resistance as well. They indicate significant improvements in mechanical properties manifested by a twofold increase in hardness and improved corrosion resistance for the oxidation process. The carburizing was most important for reducing the coefficient of friction and wear rate. The nitriding process had the least effect on the properties of Ti-6Al-4V alloy.

show abstract

Numerical modeling and testing of mechanical behavior of AM Titanium alloy bracket for aerospace applications

Cited by 33 publications

References 13 publications

Geodesic domes for planetary exploration

Geodesic domes for planetary exploration

An Overview of Additive Manufacturing Technologies—A Review to Technical Synthesis in Numerical Study of Selective Laser Melting

Comparison of Different Thermo-Chemical Treatments Methods of Ti-6Al-4V Alloy in Terms of Tribological and Corrosion Properties

Contact Info

Product

Resources

About