A5005603854- Additive Manufacturing and 3D Printing Technologies
- Additive Manufacturing Materials and Processes
- Manufacturing Process and Optimization
- High Entropy Alloys Studies
- Welding Techniques and Residual Stresses
- Robot Manipulation and Learning
- Topology Optimization in Engineering
- Traumatic Brain Injury Research
- Injection Molding Process and Properties
- Automotive and Human Injury Biomechanics
- Innovations in Concrete and Construction Materials
- Winter Sports Injuries and Performance
- Engineering Technology and Methodologies
- Metal Alloys Wear and Properties
University of Parma
2021-2023
University of Padua
2019
Additive Manufacturing (AM) brought a revolution in parts design and production. It enables the possibility to obtain objects with complex geometries exploit structural optimization algorithms. Nevertheless, AM is far from being mature technology advances are still needed different perspectives. Among these, literature highlights need of improving frameworks that describe process taking full advantage possibilities offered by AM. This work aims propose workflow for guiding designer during...
Aim of the work is to present feasibility using an Instrumented Human Head Surrogate (IHHS-1) during multidirectional impacts while wearing a modern ski helmet. The IHHS-1 intended provide reliable and repeatable data for experimental validation FE models evaluation helmets designed enhance degree protection against impacts.The new includes 9 triaxial MEMS accelerometers embedded in silicone rubber brain, independently molded presenting lobes separation cerebellum, placed into ABS skull...
ABSTRACT Additive manufacturing (AM), particularly laser‐powder bed fusion (L‐PBF), has transformed the production of lightweight, high‐performance metallic components, with Scalmalloy emerging as a promising material due to its excellent strength‐to‐weight ratio, making it ideal for aerospace and automotive applications. However, process‐induced anomalies present challenges in achieving reliable fatigue performance, which requires robust methodologies life prediction defect‐tolerant design....
The aim of this study was to investigate the impact surface roughness and size effect on uniaxial fatigue strength aged specimens made Inconel 718, obtained by laser-powder bed fusion (L-PBF) both under as-built machined conditions. profiles were scanned with a 3D optical profilometer, then modelled filtered fast Fourier transform. This latter allowed obtain relevant parameters calculate term area in Murakami model account for prediction. Two additional terms added standard formula: one...
It has been recognized that parts produced by additive manufacturing with surfaces in the "as-built" state exhibit reduced fatigue properties. On other hand, post-process surface finishing is expensive and often unfeasible due to complexity of parts. Therefore, quality parameters must be considered when designing as-built for structural applications. This work investigates topography Inconel 718 samples manufactured via laser powder bed fusion (L-PBF) three different production systems (SLM...
Parts of complex geometry are increasingly fabricated by powder bed fusion (PBF) AlSi10Mg. Since post fabrication surface finishing may be restricted due to unacceptable cost increase or/and geometrical inaccessibility the part surfaces, resulting fatigue performance AlSi10Mg parts is often insufficient. Fatigue properties depend heavily local roughness which affected processing parameters and printing strategy. A direct aging treatment applied improve material ductility while partially...
The wrought 2024 aluminum alloy is an established with copper as the primary alloying element. Due to its high strength and fatigue resistance, it widely used for aircraft structures. Development of AM counterpart this high-strength starting from gas atomized powder has been challenged by tendency hot tearing during solidification thus compromising mechanical properties. Recently, innovation Elementum 3D made compatible Laser Powder Bed Fusion technology (L-PBF). key a patented production...
Abstract Nowadays, topology optimization and lattice structures are being re-discovered thanks to Additive Manufacturing technologies, that allow easily produce parts with complex geometries. The primary aim of this work is provide an original contribution for geometric modeling conformal both wireframe mesh models, improving previously presented methods. secondary compare the proposed approaches commercial software solutions on a piston rod as case study. central part undergoes size...
Laser Powder Bed Fusion is considered as one of the most innovative manufacturing technologies and has rapidly gained interest in industry because it allows to produce near-net-shape metal components characterized by complex geometry. The structural integrity parts with geometrical characteristics driven optimized lightweight trade-offs should be verified before they are for critical applications sectors such automotive aerospace. In this work a case study presented: topology optimization...
<div class="section abstract"><div class="htmlview paragraph">Metal additive manufacturing is finding growing applicability in motorsports and high performance car sectors. Laser-Powder Bed Fusion (L-PBF) the most developed AM technology for lightweight aluminum alloys producing near-net-shape components of complex geometry that achieve outstanding targets. A key issue widespread industrial acceptability L-PBF structural integrity these when subjected to dynamic loading...
Aluminum-based alloys are widely used in high-performance structural applications. Therefore, the opportunity to fabricate aluminum components using Laser Powder Bed Fusion (L-PBF) is a matter of great interest. In particular, Al2024 alloy extensively for conventional part production but its processability by L-PBF remains challenge because hot cracking sensitivity upon solidification. The new Reactive Additive Manufacturing (RAM) technology Elementum 3D enables innovative powders...
Metal parts obtained by the layer-wise selective melting of a powder bed with laser (LPBF) are characterized surfaces that considerably rougher than conventionally machined parts. This study documents surface roughness variability as-built Inconel 718 specimens across build platform determined during qualification high productivity L-PBF system. The use original miniature specimen allowed simultaneous quantification scatter in terms and cycle fatigue response. underlines paramount importance...
The fatigue performance of materials, such as Inconel 718, when produced by Laser Powder Bed fusion, needs to be fully understood manage and exploit the full potential this Additive Manufacturing technology. Microstructure as-built surface morphology are strictly related process parameters known affect response. present contribution examines experimentally behavior laser powder bed fused 718 testing specimens printed along three different orientations with respect built direction. observed...