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Journal articles on the topic 'DMLS'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Kim, Sung Bae, Hyun Yeoul Ryu, Woo Nam, et al. "The Neuroprotective Effects of Dendropanax morbifera Water Extract on Scopolamine-Induced Memory Impairment in Mice." International Journal of Molecular Sciences 24, no. 22 (2023): 16444. http://dx.doi.org/10.3390/ijms242216444.

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This study investigated the neuroprotective effects of Dendropanax morbifera leaves and stems (DMLS) water extract on scopolamine (SCO)-induced memory impairment in mice. First, we conducted experiments to determine the protective effect of DMLS on neuronal cells. Treatment with DMLS showed a significant protective effect against neurotoxicity induced by Aβ(25–35) or H2O2. After confirming the neuroprotective effects of DMLS, we conducted animal studies. We administered DMLS orally at concentrations of 125, 250, and 375 mg/kg for 3 weeks. In the Y-maze test, SCO decreased spontaneous alternati

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Ranjan Pradhan, Smruti, Rupinder Singh, and Sukhwant Singh Banwait. "Comparison of DMLS and DMLS-waste assisted investment casting." Materials Letters 324 (October 2022): 132782. http://dx.doi.org/10.1016/j.matlet.2022.132782.

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Mangano, Francesco, Carlo Mangano, Adriano Piattelli, and Giovanna Iezzi. "Histological Evidence of the Osseointegration of Fractured Direct Metal Laser Sintering Implants Retrieved after 5 Years of Function." BioMed Research International 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/9732136.

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Background. Direct metal laser sintering (DMLS) is an additive manufacturing technique that allows the fabrication of dental implants layer by layer through the laser fusion of titanium microparticles. The surface of DMLS implants is characterized by a high open porosity with interconnected pores of different sizes; therefore, it has the potential to enhance and accelerate bone healing. To date, however, there are no histologic/histomorphometric studies in the literature evaluating the interface between bone and DMLS implants in the long-term. Purpose. To evaluate the interface between bone an

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Sharan, J., GK Chauhan, S. Munireddy, et al. "Evaluation of marginal fit of conventional, milled, and direct metal laser sintered cobalt chromium crowns: A comparative study." Journal of Nepalese Prosthodontic Society 7, no. 1 (2024): 14–23. http://dx.doi.org/10.3126/jnprossoc.v7i1.70455.

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Introduction: A close marginal adaptation of a fixed partial denture is crucial for its long-term functionality without any adversity. Human errors and casting defects are common with conventional techniques. The latest techniques, direct metal laser sintering (DMLS), and computer-aided design and manufacturing (CAD/CAM) tend to overcome these errors. Methods: 33 dies were fabricated from similar number of impressions of a tooth based on standardized measurement and were equally distributed in 3 groups (11 each). Crowns were fabricated using conventional, DMLS, and CAD/CAM methods using chrome

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Krishnan, Manickavasagam, Eleonora Atzeni, Riccardo Canali, et al. "On the effect of process parameters on properties of AlSi10Mg parts produced by DMLS." Rapid Prototyping Journal 20, no. 6 (2014): 449–58. http://dx.doi.org/10.1108/rpj-03-2013-0028.

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Purpose – The aim of this research is to reach a deep understanding on the effect of the process parameters of Direct Metal Laser Sintering process (DMLS) on macroscopic properties (hardness and density) of AlSi10Mg parts and resulting microstructure. Design/methodology/approach – A full factorial design of experiment (DOE) was applied to determine the most significant process parameter influencing macroscopic properties of AlSi10Mg parts manufactured by DMLS process. The analysis aims to define the optimum process parameters and deduce the process window that provides better macroscopic prope

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Harika, Chembeti, K. Mahendranadh Reddy, and Venkat Adithya. "Comparison of fatigue behaviour and fracture toughness of cobalt chromium alloy fabricated by casting and selective laser melting methods." IP Annals of Prosthodontics and Restorative Dentistry 9, no. 3 (2023): 158–64. http://dx.doi.org/10.18231/j.aprd.2023.031.

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Co-Cr alloys are most commonly used base metal alloy in dentistry for the fabrication of many types of metallic substructures. They gained popularity due to their good mechanical properties and low cost. There are different techniques for fabrication of Co-Cr alloys which includes casting and DMLS technique. However, change in the fabrication techniques showed variation in mechanical properties. Forty Co-Cr samples each were made from two different techniques, Casting and DMLS. Fracture toughness was done with charpy’s impact test machine and fatigue behaviour test was done with nano universal

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Śliwa, Romana Ewa, Jacek Bernaczek, and Grzegorz Budzik. "The Application of Direct Metal Laser Sintering (DMLS) of Titanium Alloy Powder in Fabricating Components of Aircraft Structures." Key Engineering Materials 687 (April 2016): 199–205. http://dx.doi.org/10.4028/www.scientific.net/kem.687.199.

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This study presents detailed characteristics of the DMLS method as used for titanium alloy powder with reference to a possible intended use in aeronautics applications.In the present study test models were made, designed for trials in which the model material properties are to be determined and which specify the basic features of the RP/DMLS technique. In order to evaluate the ultimate use of the DMLS technique in fabricating titanium alloy parts, the following procedures were conducted: tensile and upsetting tests for Ti6Al4V alloy samples (a comparative analysis for DMLS models and models fa

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Konečná, Radomila, Ludvík Kunz, Pavel Pokorný, and Gianni Nicoletto. "Fatigue Crack Growth and Threshold Behavior of DMLS Ti6Al4V." Solid State Phenomena 267 (October 2017): 157–61. http://dx.doi.org/10.4028/www.scientific.net/ssp.267.157.

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Growth of long fatigue cracks in Ti6Al4V alloy manufactured by direct metal laser sintering (DMLS) was investigated. Two DMLS systems, EOSINT M270 and EOSINT M290, with different process parameters were used for production of CT specimens having three different orientations of crack propagation with respect to the DMLS build direction. The as-built specimens were stress relieved at 740 °C. The fatigue crack growth curve and the threshold values of the stress intensity factor for crack propagation were experimentally determined. It has been found that the chosen DMLS processing parameters and t

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Walker, S. B. "The Defence Medical Library Service and Military Medicine." Journal of The Royal Naval Medical Service 91, no. 3 (2005): 170–76. http://dx.doi.org/10.1136/jrnms-91-170.

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AbstractThe Defence Medical Library Service (DMLS) supports the clinical practice and career development of military health professionals across the world. Clinical governance and the need for medical knowledge to be evidence-based means the DMLS has a central role to play in support of defence medicine. The DMLS is important for enabling health professionals to make sense of the evidence-based pyramid and the hierarchy of medical knowledge. The Royal Centre for Defence Medicine (RCDM) in Birmingham is recognised as an international centre of excellence. The information, knowledge and research

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Raj, B. Anush, J. T. Winowlin Jappes, M. Adam Khan, V. Dillibabu, and N. Rajesh Jesudoss Hynes. "Studies on Mechanical Attrition and Surface Analysis on Heat-Treated Nickel Alloy Developed through Additive Manufacturing." Advances in Materials Science and Engineering 2022 (April 9, 2022): 1–8. http://dx.doi.org/10.1155/2022/4861346.

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In this paper, the nickel-based superalloy SU718 is developed through the Direct Metal Laser Sintering (DMLS), an additive manufacturing process. Further, the material has been focused to study the effect of heat treatment and abrasive particle erosion. Two different heat treatment (HT) cycles are planed with ageing and annealing to enrich the metallurgical quality of the DMLS processed SU718 alloy. The heat treatment is performed with two different combinations of temperatures for annealing/solutionizing followed by ageing to improve the metallurgical properties. The influence of heat treatme

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Nicoletto, Gianni, Radomila Konečná, Ludvík Kunz, and Martin Frkáň. "Influence of as-built surface on fatigue strength and notch sensitivity of Ti6Al4V alloy produced by DMLS." MATEC Web of Conferences 165 (2018): 02002. http://dx.doi.org/10.1051/matecconf/201816502002.

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Direct Metal Laser Sintering (DMLS) is one of the additive manufacturing technologies involving a metal powder bed and a laser source to obtain components of complex geometry. The fatigue life of an as-built DMLS part is negatively influenced by the rough surface compared to a machined surface. Since most DMLS components are expected to have also stress concentrations, here the combined effect on fatigue of a as-built surface and a geometrical notch in as-built DMLS Ti6Al4V was investigated using a new test methodology. Miniature specimens having three different directions with respect to buil

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Mangano, F., L. Chambrone, R. van Noort, C. Miller, P. Hatton, and C. Mangano. "Direct Metal Laser Sintering Titanium Dental Implants: A Review of the Current Literature." International Journal of Biomaterials 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/461534.

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Statement of Problem. Direct metal laser sintering (DMLS) is a technology that allows fabrication of complex-shaped objects from powder-based materials, according to a three-dimensional (3D) computer model. With DMLS, it is possible to fabricate titanium dental implants with an inherently porous surface, a key property required of implantation devices.Objective. The aim of this review was to evaluate the evidence for the reliability of DMLS titanium dental implants and their clinical and histologic/histomorphometric outcomes, as well as their mechanical properties.Materials and Methods. Electr

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Mangano, Carlo, Francesco Mangano, Jamil Shibli, et al. "Immunohistochemical Evaluation of Peri-Implant Soft Tissues around Machined and Direct Metal Laser Sintered (DMLS) Healing Abutments in Humans." International Journal of Environmental Research and Public Health 15, no. 8 (2018): 1611. http://dx.doi.org/10.3390/ijerph15081611.

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Background: Direct metal laser Sintering (DMLS) is an additive manufacturing technique that allows fabrication of dental implants and related components with a highly porous surface. To date, no human studies have investigated the soft tissue adhesion and presence of inflammatory infiltrate with porous DMLS healing abutments (HAs), nor have they compared these with the classic machined ones. Purpose: To evaluate the degree of cell adhesion (integrin expression) and the quantity/quality of inflammatory infiltrate, on HAs with different surfaces; full DMLS, full machined, and hybrid (half DMLS a

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Żaba, Krzysztof, Lechosław Tuz, Piotr Noga, Stanislav Rusz, and Rostislav Zabystrzan. "Effect of Multi-Variant Thermal Treatment on Microstructure Evolution and Mechanical Properties of AlSi10Mg Processed by Direct Metal Laser Sintering and Casting." Materials 15, no. 3 (2022): 974. http://dx.doi.org/10.3390/ma15030974.

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This article presents a study on the influence of temperature and time of multi-variant heat treatment on the structure and properties of materials produced in direct metal laser sintering (DMLS) and casting technology. The materials were manufactured in the form of cuboidal elements with a cross-section of 1.5 mm × 15 mm and a length of 60 mm. The samples prepared in this way had a similar volume, but due to the production technology the metal crystallization took place at different rates and directions. In the cast, the direction of heat transfer was toward the mold, and the DMLS was directe

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Jiao, Junke, Shengyuan Sun, Zifa Xu, Jiale Wang, Liyuan Sheng, and Jicheng Gao. "Fabricating Inner Channels in Laser Additive Manufacturing Process via Thin-Plate-Preplacing Method." Materials 16, no. 19 (2023): 6406. http://dx.doi.org/10.3390/ma16196406.

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This paper presents a hybrid manufacturing process for the preparation of complex cavity structure parts with high surface quality. Firstly, laser precision packaging technology is utilized to accurately connect a thin plate to a substrate with microchannel. Secondly, Direct Metal Laser-Sintering (DMLS) technology is utilized to completely shape the part. The morphology and microstructure of laser encapsulated specimens and DMLS molded parts were investigated. The results show that the thin plate and the substrate can form a good metallurgical bond. The lowest surface roughness of the DMLS mol

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Kleczkowski, Piotr, Teresa Makuch, Aleksandra Król-Nowak, and Karol Czesak. "Equalized distributed mode loudspeakers rival conventional ones in listening tests." Journal of the Acoustical Society of America 157, no. 4 (2025): 2528–41. https://doi.org/10.1121/10.0036373.

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The application of distributed mode loudspeakers (DMLs) is increasing, whereas the technology has some deficiencies that can be compensated for. This brings up a question: which of the two loudspeaker types is subjectively preferred by listeners in the home environment — conventional, or DML? This work reports an experiment designed to answer this question. Two types of DMLs were compared with a state-of-the-art conventional box loudspeaker system in a listening experiment, participated by 77 subjects. The DMLs were compensated for their shortcomings. A reproduction format was stereophonic, an

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Sitek, Ryszard, Krzysztof Kulikowski, Krystian Paradowski, et al. "Influence of Ion Nitriding on Microstructure and Properties of Haynes 282 Nickel Superalloy Specimens Produced Using DMLS Technique." Materials 16, no. 14 (2023): 5020. http://dx.doi.org/10.3390/ma16145020.

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The paper investigates the influence of the ion-nitriding process on the microstructure, corrosion resistance, and tensile strength at elevated temperatures of Haynes 282 nickel superalloy specimens produced by the Direct Metal Laser Sintering (DMLS) technique. The study was performed for two conditions, i.e., as-built by DMLS method and as-built by DMLS method + covered by a layer containing CrN + Cr2N phases. An analysis of the surface morphology revealed that the ion-nitriding process significantly affects the physical and chemical phenomena occurring on the specimen’s surface. The XRD meas

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Lapcevic, Ana R., Danimir P. Jevremovic, Tatjana M. Puskar, Robert J. Williams, and Dominic Eggbeer. "Comparative analysis of structure and hardness of cast and direct metal laser sintering produced Co-Cr alloys used for dental devices." Rapid Prototyping Journal 22, no. 1 (2016): 144–51. http://dx.doi.org/10.1108/rpj-04-2014-0051.

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Purpose – The purpose of this paper is to analyse structure and measure hardness of Co-Cr dental alloy samples made with two different technologies, conventional casting method (CCM samples) and additive direct metal laser sintering technology (DMLS samples), and to compare the results. Design/methodology/approach – CCM samples were made in a conventional casting machine, using remanium 800+ Co-Cr dental alloy (Dentaurum, Ispringen, Germany). DMLS samples were fabricated out of EOS CC SP2 Co-Cr alloy (EOS, GmbH, Munich, Germany) using DMLS technology. Samples for structural analysis were plate

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Ai, R., D. Boyle, D. Hammaker, et al. "OP0337 DIFFERENTIAL METHYLATION OF PERIPHERAL BLOOD ADAPTIVE IMMUNE CELLS IN INDIVIDUALS AT HIGH RISK FOR RA AND WITH EARLY RA COMPARED WITH CONTROLS IDENTIFIES PATHWAYS IMPORTANT IN TRANSITION TO ARTHRITIS." Annals of the Rheumatic Diseases 79, Suppl 1 (2020): 207.2–207. http://dx.doi.org/10.1136/annrheumdis-2020-eular.2989.

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Background:The “Targeting Immune Responses for Prevention of RA” (TIP-RA) collaboration studies individuals at high risk for developing RA because of serum anti-citrullinated protein antibody positivity in absence of arthritis, and is focused on defining how they transition from at-risk to classifiable disease. One potential mechanism is through alterations in epigenetics patterns in adaptive immune cells.Objectives:Previous studies showed that DNA methylation patterns of early RA (ERA) synoviocytes differ from long-standing RA, suggesting that abnormal methylation occurs early in synovium and

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BOJKO, Łukasz, Wojciech RYNIEWICZ, Anna M. RYNIEWICZ, and Marcin KOT. "STUDY OF THE IMPACT OF INCREMENTAL TECHNOLOGY ON MECHANICAL AND TRIBOLOGICAL PROPERTIES OF BIOMATERIALS." Tribologia 273, no. 3 (2018): 29–38. http://dx.doi.org/10.5604/01.3001.0010.6117.

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The latest method for creating denture replenishment in CAD / CAM systems is Direct Metal Laser Sintering (DMLS) technology. With the use of DMLS, prosthodontics, implant prosthetics, and facial-cranialjaw surgery adapted to individual patient conditions can be realized. The aim is to evaluate the strength, microstructure, and tribological properties of Ti6Al4V and CoCrMo alloys obtained from DMLS technology in the aspect of therapeutic constructions. The conducted tests show that, in the DMLS technology, as compared to milling technology preceded by casting and forging or pressed powder and s

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Karolewska, Karolina, and Bogdan Ligaj. "Mechanical properties comparison of Ti6Al4V produced by different technologies under static load conditions." MATEC Web of Conferences 290 (2019): 08010. http://dx.doi.org/10.1051/matecconf/201929008010.

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The most commonly used technology among the additive manufacturing is Direct Metal Laser Sintering (DMLS). This process is based on selective laser sintering (SLS). The method gained its popularity due to the possibility of producing metal parts of any geometry, which would be difficult or impossible to obtain by the use of conventional manufacturing techniques. Materials used in the elements manufacturing process are: titanium alloys (e.g. Ti6Al4V), aluminium alloy AlSi10Mg, etc. Elements printed from Ti6Al4V titanium alloy find their application in many industries. Details produced by additi

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Sitek, Ryszard, Sandra Puchlerska, Ilona Nejman, et al. "The Impact of Plastic Deformation on the Microstructure and Tensile Strength of Haynes 282 Nickel Superalloy Produced by DMLS and Casting." Materials 15, no. 21 (2022): 7545. http://dx.doi.org/10.3390/ma15217545.

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The article presents the results of research on the influence of plastic deformation on the microstructure and tensile strength of Haynes 282 nickel superalloy produced by direct metal laser sintering (DMLS) and a conventional technique (casting). Samples were tested for dimensional accuracy using a 3D scanner. Then, the samples were subjected to plastic deformation by rolling. The microstructures of the DMLS and the as-cast samples were analysed using a scanning electron microscope. The strength properties of the samples were determined in a static tensile test. Microhardness measurements of

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Ciftci, Jakub, Ryszard Sitek, and Jarosław Mizera. "Analysis of direct metal laser sintering ‒ DMLS and heat treatment influence on the Inconel 713C nickel alloy structure." Welding Technology Review 93, no. 3 (2021): 49–56. http://dx.doi.org/10.26628/wtr.v93i3.1142.

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The group of nickel based superalloys produced in the DMLS (Direct Metal Laser Sintering) process is limited to materials, which produced conventionally do not have properties to allow to use them for rotating components of aircraft engines. This work attempts to optimize the technological parameters of the DMLS process for the Inconel 713C nickel superalloy. A heat treatment was performed for selected samples to investigate the effect on the morphology of the Ni3Al phase. The microstructure analysis and hardness tests were carried out. The material after the DMLS process was characterized by

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Sharma, Monica, Ajay Bansal, Sunny Panthi, Shefali Malik, and Atulya Sharma. "To Evaluate the Marginal Fit of Metal Copings Fabricated by Conventional Casting Procedure and Direct Metal Laser Sintering Technology – an In Vitro Study." Dental Journal of Advance Studies 05, no. 01 (2017): 039–46. http://dx.doi.org/10.1055/s-0038-1672079.

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Abstract Purpose: The purpose of this in vitro study was to evaluate marginal fit of cobalt- chromium (Co-Cr) copings fabricated by direct metal laser sintering system (DMLS) and conventional lost-wax technique (LW). Materials and method: Forty tooth preparations were carried out over extracted mandibular molars. They were divided into two groups A and B of 20 each. For group A Co-Cr copings were fabricated by direct metal laser sintering (DMLS) and for group B by lost wax technique (LW). Glass –ionomer cement (GIC) was used to tack the copings over their preparations. Marginal fit was then ev

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Moreno-Garibaldi, Pablo, Melvyn Alvarez-Vera, Juan Alfonso Beltrán-Fernández, et al. "Characterization of Microstructural and Mechanical Properties of 17-4 PH Stainless Steel by Cold Rolled and Machining vs. DMLS Additive Manufacturing." Journal of Manufacturing and Materials Processing 8, no. 2 (2024): 48. http://dx.doi.org/10.3390/jmmp8020048.

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The 17-4 PH stainless steel is widely used in the aerospace, petrochemical, chemical, food, and general metallurgical industries. The present study was conducted to analyze the mechanical properties of two types of 17-4 PH stainless steel—commercial cold-rolled and direct metal laser sintering (DMLS) manufactured. This study employed linear and nonlinear tensile FEM simulations, combined with various materials characterization techniques such as tensile testing and nanoindentation. Moreover, microstructural analysis was performed using metallographic techniques, optical microscopy, scanning el

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Doddamani, Mallikarjun H., and Rajesh Suhas Swami. "Comparative analysis of accuracy of SLA and DMLS technologies for cast partial denture frameworks using metrology software." IP Annals of Prosthodontics and Restorative Dentistry 11, no. 1 (2025): 46–53. https://doi.org/10.18231/j.aprd.2025.010.

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Advanced manufacturing techniques like CAD/CAM and 3D printing have revolutionized dental prosthetics, offering improved precision, efficiency, and accessibility. The accuracy and precision of cast partial dentures significantly affect patient outcomes.To compare the trueness and precision of stereolithography (SLA) and Direct Metal Laser Sintering (DMLS) in fabricating Cast Partial Denture (CPD) frameworks.A partially edentulous mandibular replica was scanned to create a master STL file. Using CAD software, 32 frameworks were designed and produced: 16 using DMLS and 16 using SLA. The framewor

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Yang, Tzu-Hsien, Yu-Huai Yu, Sheng-Hang Wu, Fang-Yuan Chang, Hsiu-Chun Tsai, and Ya-Chiao Yang. "DMLS: an automated pipeline to extract the Drosophila modular transcription regulators and targets from massive literature articles." Database 2024 (2024): 0. http://dx.doi.org/10.1093/database/baae049.

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Abstract Transcription regulation in multicellular species is mediated by modular transcription factor (TF) binding site combinations termed cis-regulatory modules (CRMs). Such CRM-mediated transcription regulation determines the gene expression patterns during development. Biologists frequently investigate CRM transcription regulation on gene expressions. However, the knowledge of the target genes and regulatory TFs participating in the CRMs under study is mostly fragmentary throughout the literature. Researchers need to afford tremendous human resources to fully surf through the articles dep

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Crowe, Kathryn, and Mark Guiberson. "Professionals’ Perspectives on Supporting Deaf Multilingual Learners and Their Families." Journal of Deaf Studies and Deaf Education 26, no. 1 (2020): 70–84. http://dx.doi.org/10.1093/deafed/enaa025.

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Abstract Parents frequently report that advice from professionals is important in making decisions about how their child with hearing loss will communicate. Little is currently known about how professionals support parents raising children with hearing loss in spoken language multilingual environments, children who are described as d/Deaf multilingual learners (DMLs). The purpose of this phenomenological study was to gain insight into professionals’ perspectives and experiences working with such families, particularly in relation to supporting parents in decision-making about multilingualism a

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Wirwicki, Mateusz. "Effect of the aging process at a temperature of 300 degrees Celsius of Ti6Al4V alloy on mechanical strength under static loading conditions." MATEC Web of Conferences 290 (2019): 08017. http://dx.doi.org/10.1051/matecconf/201929008017.

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Conventional construction of components is slowly being replaced by rapid prototyping and the use of DMLS technology. The development of DMLS requires conducting experimental studies that build a knowledge base that allows for the averaging of mechanical properties. verification of how the initiation of the crack occurs in the material and how the energy is propagated in the samples that were made by a conventional method compared to the samples, where the method of sintering titanium layers will be used. The literature analysis showed no research results relating to the impact of values of st

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Băilă, Diana Irinel. "Experimental Researches of Co-Cr Alloys Powders Manufactured by Sintering Process DMLS and Ni-Cr Alloys Used in Dentistry." Advanced Materials Research 1119 (July 2015): 433–37. http://dx.doi.org/10.4028/www.scientific.net/amr.1119.433.

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The purpose of this study was to evaluate the chemical and metallurgical aspects, mechanical properties and hardness of the Co-Cr alloy powders manufactured by sintering process DMLS and compared with Ni-Cr alloys used for personalized dental crowns.In dentistry are develop new methods to obtain personalized dental crowns quickly, the cost is not expensive and is identically with the dental scan realized by dentist. DMLS sintering manufacturing is a new method who permits to realize in the same day the dental crowns with the first control.Powders of Co-Cr alloys presents good sintered properti

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Bača, Adrián, Radomila Konečná, and Gianni Nicoletto. "Influence of the Direct Metal Laser Sintering Process on the Fatigue Behavior of the Ti6Al4V Alloy." Materials Science Forum 891 (March 2017): 317–21. http://dx.doi.org/10.4028/www.scientific.net/msf.891.317.

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Direct Metal Laser Sintering (DMLS) is additive manufacturing (AM) process that can produce near net shape parts from metal powders such as titanium alloys. DMLS is a layer by layer additive manufacturing technique based on high power fiber laser that creates solid layers from loose powder material and joins them in an additive manner. The specific DMLS process conditions, lead to a specific and complex microstructure and to mechanical properties that show a degree of directionality. It was found that microstructural characteristics are related to the building process parameters. The aim of th

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Diamantopoulos, Nikolaos-Panteleimon (Pandelis), Suguru Yamaoka, Takuro Fujii, et al. "47.5 GHz Membrane-III-V-on-Si Directly Modulated Laser for Sub-pJ/bit 100-Gbps Transmission." Photonics 8, no. 2 (2021): 31. http://dx.doi.org/10.3390/photonics8020031.

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Near-future upgrades of intra data center networks and high-performance computing systems would require optical interconnects capable of operating at beyond 100 Gbps/lane. In order for this evolution to be achieved in a sustainable way, high-speed yet energy-efficient transceivers are in need. Towards this direction we have previously demonstrated directly-modulated lasers (DMLs) capable of operating at 50 Gbps/lane with sub-pJ/bit efficiencies based on our novel membrane-III-V-on-Si technology. However, there exists an inherent tradeoff between modulation speed and power consumption due to th

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Deeban, Yahya. "Effectiveness of CAD-CAM Milled Versus DMLS Titanium Frameworks for Hybrid Denture Prosthesis: A Narrative Review." Journal of Functional Biomaterials 15, no. 12 (2024): 376. https://doi.org/10.3390/jfb15120376.

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This narrative review aimed to evaluate the effectiveness of computer-aided design (CAD), computer-aided manufacturing (CAM) milled, and direct metal laser sintering (DMLS) titanium frameworks in hybrid denture prostheses. A structured PICO analysis and a review of ten publications were used to compare titanium frameworks for hybrid dentures made through milling, DMLS, and CAD-CAM milling. Prosthesis success, bone loss, patient satisfaction, framework fit, and biofilm adhesion were among the outcome indicators. The inclusion criteria included comparisons between DMLS and milled titanium framew

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Ashwath, P., M. Anthony Xavior, P. Jeyapandiarajan, J. Joel, and Andre Batako. "Surface Finish and Property Evaluation of Direct Metal Laser Sintered (DMLS) Al-Si-10Mg alloy." Journal of Physics: Conference Series 2198, no. 1 (2022): 012055. http://dx.doi.org/10.1088/1742-6596/2198/1/012055.

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Abstract Recently, Additive Manufacturing (AM) technique is widely recognized by engineering sectors for its novel capability to manufacture components directly from a Computer-Aided Model (CAM). Direct Metal Laser Sintering (DMLS) is an upcoming modernization among different AM techniques. DMLS is one of the AM techniques attuned to produce the three-dimensional components or expensive component by layer-by-layer powder deposition and laser sintering avoiding utilization of any alternative additional processes. Current research work focus on fabricating an Al-Si-10Mg aluminium alloy by DMLS p

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Konečná, Radomila, Gianni Nicoletto, Adrián Bača, and Ludvík Kunz. "Metallographic Characterization and Fatigue Damage Initiation in Ti6Al4V Alloy Produced by Direct Metal Laser Sintering." Materials Science Forum 891 (March 2017): 311–16. http://dx.doi.org/10.4028/www.scientific.net/msf.891.311.

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Direct Metal Laser Sintering (DMLS) is a complex process where a part is build-up by localized melting of gas atomized powder layers by a concentrated laser beam followed rapid solidification. The microstructure of DMLS produced material is substantially different from that of conventionally manufactured materials, although the ultimate strength is similar. However, yield strength and elongation and especially fatigue behavior may vary considerably according to the process parameters and post fabrication heat treatment because they affect structural heterogeneity, porosity content, residual st

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Konečná, Radomila, Gianni Nicoletto, Adrián Bača, and Ludvík Kunz. "High Cycle Fatigue Life of Ti6Al4V Alloy Produced by Direct Metal Laser Sintering." Solid State Phenomena 258 (December 2016): 522–25. http://dx.doi.org/10.4028/www.scientific.net/ssp.258.522.

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High cycle fatigue life of Ti6Al4V alloy specimens manufactured by Direct Metal Laser Sintering (DMLS) was experimentally determined. The DMLS fabrication process was characterized by a 400 W laser power and 50 μm layer melted thickness. Post-fabrication heat treatment consisted in stress relieving for 3 h at 720 °C in vacuum with subsequent cooling in argon atmosphere. Fatigue testing of specimens oriented in three different directions with respect to the material build direction was performed with the aim to examine the influence of the layered microstructure on the fatigue behavior. Results

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Balaji, Bonothu, Dileep Nag Vinnakota, Vijaya Sankar V, and Srinivas Rao Pottem. "Thermal expansion and corrosion resistance of cobalt-chromium alloys fabricated by contemporary manufacturing processes. An in vitro study." Journal of Oral Research 11, no. 5 (2022): 1–12. http://dx.doi.org/10.17126/joralres.2022.058.

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In Purpose: The fabrication technique can influence the mechanical properties of Cobalt-Chromium (Co-Cr) dental alloys. Hence, the present study aims to determine the corrosion resistance and thermal expansion of alloys manufactured using three contemporary techniques. Material and Methods: A total of nine specimens of Co-Cr alloy were prepared according to ISO 22674 by each one of the three manufacturing processes (three in each process); conventional casting, direct metal laser sintering (DMLS) and milling (MIL). All these specimens were tested for coefficient of thermal expansion and corros

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Yılmaz, Mustafa Safa, Gökhan Özer, Zafer Çağatay Öter, and Onur Ertuğrul. "Effects of hot isostatic pressing and heat treatments on structural and corrosion properties of direct metal laser sintered parts." Rapid Prototyping Journal 27, no. 5 (2021): 1059–67. http://dx.doi.org/10.1108/rpj-10-2020-0245.

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Purpose This paper aims to investigate the effects of various heat treatments on microstructure, hardness, porosity and corrosion properties of the parts. Design/methodology/approach Hot isostatic pressing (HIP) process, various heat treatments and their combinations were applied to the AlSi10Mg parts produced by direct laser metal sintering (DMLS). Findings It has been found that the HIP process, which is a post-processing process, reduces the amount of porosity in DMLS-AlSi10Mg material, thus improves corrosion resistance significantly. Originality/value In this study, the HIP process and su

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Naiju, C. D., K. Annamalai, P. K. Manoj, and K. M. Ayaz. "Investigation on the Effect of Process Parameters on Hardness of Components Produced by Direct Metal Laser Sintering (DMLS)." Advanced Materials Research 488-489 (March 2012): 1414–18. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.1414.

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Direct metal laser sintering (DMLS) is one of the methods in layer manufacturing technologies by which metal powder can be directly used to produce both prototype and production tools. The components manufactured by DMLS should have essential hardness for its application in the industry. This study was carried out to determine the optimum process parameters influencing the hardness of the components produced by DMLS. Sintering speed, hatch spacing, post contouring, infiltration and hatch type are the process parameters taken up for study. Statistical design of experiments using Taguchi’s ortho

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Eric-Cekic, Olivera, Nebojsa Bogojevic, Vladimir Sindjelic, Dario Croccolo, Giorgio Olmi, and Snezana Ciric-Kostic. "Microstructure and orientation - dependent fatigue performance of direct metal laser sintered maraging steel." Science of Sintering, no. 00 (2024): 35. http://dx.doi.org/10.2298/sos240706035e.

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The microstructure of maraging steel produced by direct metal laser sintering (DMLS) is influenced by various factors, including parameters of the DMLS process and post-treating methods. This study investigates the effect of build orientation on the microstructure and fatigue behaviour of M300 maraging steel manufactured using DMLS. Microstructural characterization was conducted using light microscopy (LM) and scanning electron microscopy (SEM). The study also involved analysing fracture surfaces using SEM and performing fatigue tests on additively manufactured samples. The research reveals th

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Dolinsek, Slavko. "Direct Metal Laser Sintering Some Improvements of the Materials and Process." Materials Science Forum 539-543 (March 2007): 2681–86. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.2681.

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For a comprehensive understanding of the direct metal laser sintering (DMLS) process and for the successful introduction of this technology, some investigations related to the characteristics of the powders and the individual sintered layers were therefore performed. Also possibilities of hard coatings deposition for further improvements the wear and temperature resistance of tool inserts, and investigations particularly focused into the industrial applications of DMLS tooling inserts are presented.

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Kumpaty, Subha, Sheku Kamara, Brandon Tomlin, et al. "Effect of Heat Treatment on Mechanical/Metallurgical Properties of Direct Metal Laser Sintered 17-4 Precipitate Hardened Stainless Steel." Advanced Materials Research 699 (May 2013): 795–801. http://dx.doi.org/10.4028/www.scientific.net/amr.699.795.

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Greatbatch Medical, specializing in orthopedic implants and instruments, is currently utilizing direct metal laser sintering (DMLS) technology to develop concept prototypes. Greatbatch uses EOS GP1 Stainless Steel which adheres to the American standard for 17-4 Precipitation Hardened SS. Following DMLS, Greatbatch heat treats its parts to obtain desirable mechanical properties. In this study, three different heat treatment methods were examined: heat treatment and stress relief (HT+SR), stress relief (SR), and solution aging and annealing (SAA). The Vickers Hardness Test and the Tensile Streng

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Nancharaiah, Tata, V. Sudheer Kumar Reddy, T. Chakravarthi, G. Tarun Sai Chowdary, and Y. Brahma Teja. "Experimental Study on the Effect of Process Parameters on the Build Time and Part Accuracy of Direct Metal Laser Sintering Components." Applied Mechanics and Materials 917 (October 13, 2023): 49–56. http://dx.doi.org/10.4028/p-fzsqm6.

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3D printing is an emerging technology that creates parts straight from CAD models. Direct Metal Laser Sintering (DMLS) is a 3D printing method that is becoming increasingly popular in the aerospace, medical, and orthopedics sectors. These are usually focused on precise, long-lasting, and lightweight parts. DMLS is an Additive Manufacturing (AM) technique that employs a laser to sinter a selected area of a metallic powder layer by layer to produce the required metal components. The heating power of the laser was discovered to have a strong effect on phase formation. The major issue with this pr

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Márquez, C., J. D. López, L. Cabrera, L. González, and J. Botana. "Study of the influence of laser energy density on the surface roughness of Scalmalloy^® samples manufactured by DMLS technology." IOP Conference Series: Materials Science and Engineering 1193, no. 1 (2021): 012036. http://dx.doi.org/10.1088/1757-899x/1193/1/012036.

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Abstract Direct Metal Laser Sintering (DMLS) is an additive metal manufacturing technology that allows complex parts to be built without the design constraints of conventional technologies. In addition, the possibility of reusing powder reduces raw material consumption and the amount of waste generated. However, one of the disadvantages of this technology is that, in most cases, it requires post-processing tasks that increase manufacturing costs and delivery times. Some of these additional tasks are aimed at reducing the surface roughness of the parts obtained, using technologies such as grind

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Żaba, Krzysztof, Krzysztof Szymański, Maciej Balcerzak, Ilona Różycka, Łukasz Kuczek, and Piotr Żabiński. "Effect of Surface Finishing on the Corrosion Resistivity of 3D Printed M300 Steel." Materials 17, no. 24 (2024): 6047. https://doi.org/10.3390/ma17246047.

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The purpose of this study was to investigate the influence of synthesis parameters and surface finish on the corrosion of DMLS-printed M300 steel components and to evaluate their applicability in corrosive environments. In order to assess the influence of the corrosive environment, potentiodynamic and long-term corrosion tests were carried out in this study, together with microscopic and EDS studies on 3D-printed M300 steel samples synthetized using the DMLS method with different laser powers. The results show that DMLS-produced M300 steel is vulnerable to corrosion in corrosive environments.

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Bueno Castellanos, Carmen, and Álvaro Fernández-Baldor. "Transformative Potential of Digital Manufacturing Laboratories: Insights from Mexico and Spain." Knowledge 5, no. 3 (2025): 12. https://doi.org/10.3390/knowledge5030012.

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This article presents a comparative analysis of digital manufacturing laboratories (DMLs) in Mexico and Spain. It is argued that DMLs, also known as makerspaces or FabLabs, play a key role in innovation and experimentation, but that their success depends on the relationships they establish with social actors, such as local governments, universities, and firms. Key concepts of the transformative innovation approach such as “protective space” and “embeddedness” are introduced, which allow us to understand how DMLs operate within a complex system. The comparative analysis of a DML in Mexico City

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Jin, Max, Haseung Chung, Patrick Kwon, and Adil Akkouch. "Effects of Different Titanium Surfaces Created by 3D Printing Methods, Particle Sizes, and Acid Etching on Protein Adsorption and Cell Adhesion, Proliferation, and Differentiation." Bioengineering 9, no. 10 (2022): 514. http://dx.doi.org/10.3390/bioengineering9100514.

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The surfaces of 3D printed titanium prostheses have major impacts on the clinical performance of the prostheses. To investigate the surface effects of the products generated by 3D printed titanium on osseointegration, six surface types of titanium discs produced by the direct metal laser sintering (DMLS) and electron beam melting (EBM) methods, with two sizes of titanium particles and post-printing acid etching, were used to examine the surface topography and to explore the protein adsorption, pro-inflammatory cytokine gene expressions, and MC3T3-E1 cell adhesion, proliferation, and differenti

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Azevedo-Silva, Lucas José de, Brunna Mota Ferrairo, Renato José Berro-Filho, Fernanda Ferruzzi Lima, and José Henrique Rubo. "Lost-wax or laser sintering? Findings on marginal and internal adaptation of metallic copings." Research, Society and Development 10, no. 17 (2021): e162101724429. http://dx.doi.org/10.33448/rsd-v10i17.24429.

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Marginal and internal adaptation are parameters of crucial importance to the success of prosthetic crowns. Automatized process creates an expectative of superior or equivalent results compared to restorations manufactured by conventional lost-wax technique. The purpose of this study was to evaluate the marginal adaptation and internal adaptation (cement space) of metal-ceramic crown copings produced by lost-wax (LW) and direct metal laser sintering (DMLS) techniques. An artificial lower first molar was prepared for a full crown, duplicated in plaster and scanned. Twenty metal-ceramic crown c

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Muiruri, Amos, Maina Maringa, and Willie du Preez. "Evaluation of Dislocation Densities in Various Microstructures of Additively Manufactured Ti6Al4V (Eli) by the Method of X-ray Diffraction." Materials 13, no. 23 (2020): 5355. http://dx.doi.org/10.3390/ma13235355.

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Dislocations play a central role in determining strength and flow properties of metals and alloys. Diffusionless phase transformation of β→α in Ti6Al4V during the Direct Metal Laser Sintering (DMLS) process produces martensitic microstructures with high dislocation densities. However, heat treatment, such as stress relieving and annealing, can be applied to reduce the volume of these dislocations. In the present study, an analysis of the X-ray diffraction (XRD) profiles of the non-heat-treated and heat-treated microstructures of DMLS Ti6Al4V(ELI) was carried out to determine the level of defec

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Humnabad, Prashant S., R. Tarun, and Indraneel Das. "An Overview Of Direct Metal Laser Sintering (DMLS) Technology For Metal 3D Printing." Journal of Mines, Metals and Fuels 70, no. 3A (2022): 127. http://dx.doi.org/10.18311/jmmf/2022/30681.

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<p>Additive manufacturing is the process of building a component or a product layer-by-layer, as opposed to casting the component and then performing various subtractive machining processes like turning, drilling, milling which are the approach of subtractive manufacturing. The term 3D printing refers to the family of additive manufacturing processes, which utilize different mechanisms in order to build the product from a sliced computer aided design (CAD) model fed to the machine. direct metal laser sintering (DMLS) is the one method of 3D printing functional metal parts are suitable fo

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