Article
Polymer Science
Riccardo Tonello, Knut Conradsen, David Bue Pedersen, Jeppe Revall Frisvad
Summary: Selective laser sintering (SLS) is a well-established additive manufacturing technology. Efforts have been made to improve SLS by optimizing powder deposition, laser parameters, and temperature settings. This study evaluated the surface roughness and grain size differences of curved objects manufactured using a new SLS technology featuring two CO laser sources. Significant differences were found in some surface roughness and grain size measurements when varying build setup, presence of thin walls, and sample position on the powder bed.
Article
Materials Science, Multidisciplinary
Rachel Tullis, Anna Dunn, Dan Young, Nathan Klingbeil, Joy Gockel
Summary: Additive manufacturing allows for the creation of complex geometries by simultaneously fabricating the material and the component. In this study, the bulk processing parameters were modified during the fabrication of axial fatigue specimens, resulting in changes to both the microstructure and surface roughness. The axial fatigue testing revealed that surface roughness plays a significant role in fatigue initiation and has a greater influence on total life compared to differences in microstructures. Understanding the relationships between processing, structure, properties, and performance is crucial in additive manufacturing, including the interactions between different parameter sets and their effects on fatigue failure mechanisms.
Article
Polymer Science
Irene Buj-Corral, Xavier Sanchez-Casas, Carmelo J. Luis-Perez
Summary: Fused filament fabrication (FFF) 3D printing technology allows for complex parts to be obtained at low cost and in reduced manufacturing times. This study focuses on the impact of main 3D printing parameters on roughness in curved surfaces. The results showed that roughness parameters were mainly influenced by layer height and nozzle diameter, and ANFIS models were used to analyze the data.
Article
Polymer Science
Mohammad Reza Khosravani, Jonas Schueuermann, Filippo Berto, Tamara Reinicke
Summary: The study investigates the influence of post-processing on the mechanical properties of 3D-printed parts using ABS material. It demonstrates the effects of surface modification on fracture toughness and tensile strength of the components, providing valuable insights for future designs and optimization. Utilization of a 3D laser microscope enhances the visual investigation of the specimens.
Article
Materials Science, Coatings & Films
Brodan Richter, Tim Radel, Frank E. Pfefferkorn
Summary: Poor fatigue life caused by rough and irregular surfaces is a significant challenge for additive manufacturing. Laser polishing, using a laser to irradiate, melt, and smooth the surface, is a solution. This study examines the laser polishing of cobalt-chromium samples produced through laser powder bed fusion. The influence of various laser processing parameters on surface smoothing is analyzed, with laser power playing the most important role. The starting surface condition and variability caused by particle adherence are also discussed. This work provides an important overview of processing aspects for advancing the commercialization of additive manufacturing technology in part finishing.
SURFACE & COATINGS TECHNOLOGY
(2022)
Review
Chemistry, Physical
Temesgen Batu, Hirpa G. Lemu, Hailu Shimels
Summary: Researchers are using artificial intelligence methods to predict the surface quality of additively manufactured components, which can effectively improve production efficiency and competitiveness while saving costs and time. However, there are still limitations, challenges, and future directions in predicting surface roughness.
Article
Acoustics
Agnieszka Ciochon, John Kennedy, Raphael Leiba, Lara Flanagan, Mark Culleton
Summary: The effects of surface roughness on the acoustic properties of additively manufactured parts were investigated. Computational models with smooth and rough surfaces were created and the results were compared with experimental data. It was found that surface roughness accurately captured the variations in acoustic performance, but it was not enough to fully explain the differences between experimental and numerical data.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Engineering, Manufacturing
M. M. Basha, S. M. Basha, V. K. Jain, M. R. Sankar
Summary: Additive manufacturing is a promising technique for manufacturing complex shapes without the need for tools. However, the resulting components have high surface roughness, which affects their performance in various applications. Chemical-based finishing processes have been developed to reduce surface roughness, but the lack of understanding of their fundamental mechanisms limits their practical applications. This review study explains the mechanisms of different finishing processes and discusses their current state and future perspectives. Additionally, it provides insights into selecting appropriate finishing processes based on component complexity and cost.
ADDITIVE MANUFACTURING
(2022)
Article
Dentistry, Oral Surgery & Medicine
Marta Revilla-Leon, David Jordan, Mohammed M. Methani, Wenceslao Piedra-Cascon, Mutlu Ozcan, Amirali Zandinejad
Summary: This in vitro study aimed to measure the surface roughness of AM clear silicone indices manufactured using a vat-polymerization 3D printer with different print orientations. The results indicated that print orientation significantly influenced the surface roughness of the facial AM silicone indices tested.
JOURNAL OF PROSTHETIC DENTISTRY
(2021)
Article
Polymer Science
Carmelo J. Luis-Perez, Irene Buj-Corral, Xavier Sanchez-Casas
Summary: This study investigates the influence of process parameters on the quality of manufactured parts, focusing on form errors and dimensional error of hemispherical cups produced by 3D printing. Using ANFIS models, it was determined that nozzle diameter and layer height play a significant role in dimensional error, roundness, and concentricity. The study demonstrates the importance of optimizing manufacturing conditions for additive manufacturing processes.
Article
Engineering, Manufacturing
C. L. Clark, E. K. Karasz, M. Melia, D. E. Hooks, R. Hackenberg, H. Colon-Mercado, P. Ganesan, P. Renner, S. Cho, M. Wu, S. R. Qiu, J. Dwyer, Z. Rueger, T. J. Gorey, Z. Koehn, J. A. Stull
Summary: This study investigates the corrosion response of metal AM materials and finds significant variability in the susceptibility to localized corrosion of samples built on different machines, likely due to differences in chemical segregation, microstructure, and roughness features.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Chemistry, Physical
Jiantao Zhou, Xu Han, Hui Li, Sheng Liu, Shengnan Shen, Xin Zhou, Dongqi Zhang
Summary: The study investigates the impact of laser polishing on the surface quality of AlSi10Mg material, showing significant reduction in surface roughness and improvement in microhardness. Better surface quality can be achieved by adjusting the parameters of laser polishing.
Review
Automation & Control Systems
Jibin Boban, Afzaal Ahmed, E. K. Jithinraj, M. Azizur Rahman, Mustafizur Rahman
Summary: Additive manufacturing is an advanced manufacturing technology that can create complex shaped products from a digital 3D design. Metal additive manufacturing has gained attention due to the increasing demand for complex and customized metallic parts in various industries. However, the surface integrity and dimensional accuracy of the parts produced by metal additive manufacturing need improvement. Researchers have introduced several post-processing methods to overcome these issues. This review provides a comprehensive outlook on these methods, their outcomes in terms of surface modification, and discusses the future research path in the field of post-processing metallic additive manufacturing components, with a focus on automation using machine learning and artificial intelligence.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Waqas Muhammad, Jidong Kang, Kaan Inal
Summary: The fatigue behavior of AlSi10Mg alloy processed by laser-based powder bed fusion of metals (PBF-LB/M) in different conditions is evaluated. A new surface treatment method is applied to improve the fatigue strength of the alloy. A simplified fracture mechanics-based fatigue life modeling approach is developed using real-time defects distribution data and surface profilometry measurements.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Mechanical
T. Dusautoir, B. Berthel, S. Fouvry, P. Matzen, K-D. Meck
Summary: This study investigates the impact of post-processing treatments on the fatigue limit of additive manufactured Ti-6Al-4V under stress gradients, with a focus on surface integrity.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Automation & Control Systems
Ebrahim Vahabli, Sadegh Rahmati
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2017)
Article
Engineering, Mechanical
Ebrahim Vahabli, Sadegh Rahmati
RAPID PROTOTYPING JOURNAL
(2017)
Review
Engineering, Biomedical
Ebrahim Vahabli, James Mann, Behzad Shiroud Heidari, Michael Lawrence-Brown, Paul Norman, Shirley Jansen, Elena de Juan Pardo, Barry Doyle
Summary: Endovascular treatment of aortic disorders is less burdensome to patients compared to open surgery. However, device-related complications in stent-graft procedures still exist. With the emergence of 4D-printing and smart materials, advancements are expected in the functionality and form of cardiovascular implants.
ADVANCED HEALTHCARE MATERIALS
(2022)
Article
Engineering, Manufacturing
Ebrahim Vahabli, Sadegh Rahmati
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2016)
