Some typical strengthening mechanisms for the additively manufactured components, including fine microstructures, secondary phases, special microstructural …
Additive manufacturing (AM) technologies are currently employed for the manufacturing of completely functional parts and have gained the attention of high-technology industries such as the aerospace, automotive, and biomedical fields. This is mainly due to their advantages in terms of low material waste and high productivity, …
Over the past few decades, additive manufacturing (AM) has become a reliable tool for prototyping and low-volume production. In recent years, the market share of such products has increased rapidly as these manufacturing concepts allow for greater part complexity compared to conventional manufacturing technologies. Furthermore, as …
Today, parts made by additive manufacturing (AM) methods have found many applications in the medical industry, the main reasons for which are the ability to custom design and manufacture complex structures, their short production cycle, their ease of utilization, and on-site fabrication, leading to the fabrication of next-generation intricate …
optical properties that provide facility for large-field, high-resolution measurement of industrially-produced additively manufactured parts. Export citation and abstract BibTeX RIS As the Version of Record of this …
As a general rule, most metal AM parts will meet or exceed the property requirements of cast parts. Wrought properties are by far the most challenging to equal; however, heat treatment or HIP processes applied post-build are often successful in equalling wrought properties. It is somewhat unfortunate that, for metal Additive Manufacturing ...
Additive manufacturing (AM) or 3D printing techniques offer more freedom to realize some new designs of novel lightweight materials and structures in an efficient …
The demand for manufacturing components with complex geometries, good mechanical properties, and material efficiency has surged across various industries, encompassing aerospace, military, nuclear, and naval sectors. Laser powder bed fusion (LPBF), as an additive manufacturing (AM) process, has emerged as a promising …
Abstract. An overview on recent research efforts is presented to obtain an understanding on the fatigue behaviour and failure mechanisms of metallic parts fabricated via powder-based additive manufacturing (AM) processes, including direct energy deposition (DED) and powder bed fusion (PBF) methods, utilizing either laser or electron …
The term additive manufacturing refers to the process of fabricating physical 3D objects by extruding material, layer-by-layer, to form the desired shapes.
Additive manufacturing (AM) is gradually occupying a unique place as a viable industrial manufacturing technology for parts with complex geometry and difficult-to-machine materials. The capability of AM to apply to such parts in various sectors of industry, including automotive, aerospace, and medical devices, stems from the layer-by-layer …
1 · LAM can be linked with post-processing techniques such as hot-isostatic pressing [15], polishing, and grinding [16] to lessen the defects in the manufactured parts. Numerous methodologies have been employed for porosity assessment, encompassing in-situ experimental analysis [17], finite element simulation [18], and analytical modeling [19] .
Additively manufactured parts often have complex temperature fields, so it is still difficult to accurately detect part defects through eddy current. In the future, we can develop corresponding signal processing methods by designing a reasonable probe form to overcome the interference of temperature and surface roughness on the detection results.
Near-net shape additively manufactured parts generally require a marginal material removal from the as-built surfaces to set the dimensional tolerances …
Additive manufacturing (AM) is now regularly used for customised fabrication of parts with complex shapes and geometries. However, the large range of relevant scales, high slopes, step-like transitions, undercuts, alternation between dark and overly bright regions and other complex features present on the surfaces, in particular of metal additive parts, represent …
The parts shown in Fig. 5 a were manufactured with a laser power of 155 W, scanning speed of 1200 mm/s, hatch spacing of 110 µm, and layer thickness of 20 µm. The laser power was reduced by 50% for down-facing surfaces to …
With the combination of scan strategy, which produces a peculiar microstructure, and grain refinement, low wear has been achieved in additively manufactured parts. Additionally, it is worth noting that the average wear rate of SLMed samples is 26% lower than that of cold-rolled parts under all loading conditions (Fig. 15 ).
Metal additive manufacturing (AM), also known as 3D printing, is a disruptive manufacturing technology in which complex engineering parts are produced in a layer-by-layer manner, using a high-energy heating source and powder, wire or sheet as feeding material. The current paper aims to review the achievements in AM of steels in …
Leveraging the digital thread for physics-based prediction of microstructure heterogeneity in additively manufactured parts Author links open overlay panel Gerald L. Knapp a, Benjamin Stump b, Luke Scime c, Andrés Márquez Rossy a, Chase Joslin d, William Halsey c, Alex Plotkowski a
This study will provide a fundamental understanding of laser welding of AM parts by reviewing current research in the field. The possibility of joining most commonly used AM parts such as AlSi10Mg, AISI 316L, Ti6Al4V and Nickel alloy 718 by laser welding are investigated. Furthermore, the effect of laser welding parameters on mechanical and ...
Abstract. Ultrasonic wave based techniques are widely used for damage detection and for quantitative and qualitative characterization of materials. In this study, ultrasonic waves are used for probing the response of additively manufactured 316L stainless steel samples as their porosity changes. The additively manufactured …
Additive manufacturing (AM) is considered a disruptive or key enabling technology. Polymer based AM using filament extrusion has attracted much attention from customer/maker side, but many industrial applications require parts made in metallic materials and consequently powder based processes. While these AM (SLM, EBM, …
In the fast-changing world of 3D printing and similar technologies, this Research Topic takes a close look into the critical aspects of quality, properties, and …
Additive manufacturing (AM) technologies are currently employed for the manufacturing of completely functional parts and have gained the attention of high …
Qualifying additively manufactured parts. CT scanning, software, and setting process parameters ensure flight readiness of 3D-printed metal parts. Wall thickness analysis (WTA) on a topology-optimized satellite bracket. The WTA shows the distribution of different wall thicknesses throughout the part. qualifying parts for aerospace takes on ...
Instead, the strengths of the additive domes at 70 °C are closer to each other at 80 to 100% compared to injection molding. In contrast, under −40 °C, there is a greater discrepancy under a deviation of 60 to 70%. Under high temperatures, additively manufactured components show a relatively smaller loss of strength.
Semantic Scholar extracted view of "Assessment of Process Modeling Tools for Determining Variability in Additively Manufactured Parts" by A. Plotkowski et al. DOI: 10.2172/1989564 Corpus ID: 259959289 Assessment …
Additionally, the model accurately predicts both the stiffness and strength of the component. We measured the strength of the lever to be 435 lbf. The FEA predicted a strength of 428 lbf. This result validates the accuracy of our model for parts subjected to monotonically increasing load. With accurate models for a given AM material/process ...
LSP of additively manufactured parts after every certain number of layers arises some challenges even though this method provides CRS and other benefits deep inside a part. The first challenge is the constant removal and resetting of the printed parts, compromising the parts'' accuracy.
Tel.: +44 (0) 115 951 4109; Fax: +44 (0) 115 951 3800. E-mail address: [email protected] Abstract Additive manufacturing methods continue to move towards production ready technologies with the widely extolled virtues of rapid transition from design to part and enhanced design freedoms. However, due to fundamental limitations of laser …