Progress in Additive Manufacturing最新文献

A finite element approach for modelling the fracture behaviour of unidirectional FFF-printed parts. 单向fff打印零件断裂行为建模的有限元方法。

IF 5.4

Progress in Additive Manufacturing Pub Date : 2025-01-01 Epub Date: 2025-02-25 DOI: 10.1007/s40964-025-01021-8

Simon Seibel, Josef Kiendl

引用次数: 0

Rapid processing window development of Mo-Si-B alloy for electron beam powder bed fusion. Mo-Si-B合金电子束粉末床熔合快速加工窗口的开发。

IF 5.4

Progress in Additive Manufacturing Pub Date : 2025-01-01 Epub Date: 2025-04-28 DOI: 10.1007/s40964-025-01119-z

Yong Chen, Jonas Böhm, Benjamin Wahlmann, Manja Krüger, Carolin Körner

{"title":"Rapid processing window development of Mo-Si-B alloy for electron beam powder bed fusion.","authors":"Yong Chen, Jonas Böhm, Benjamin Wahlmann, Manja Krüger, Carolin Körner","doi":"10.1007/s40964-025-01119-z","DOIUrl":"10.1007/s40964-025-01119-z","url":null,"abstract":"The multiphase alloy Mo-9Si-8B (at.%) exhibits high oxidation, creep, and fracture resistance at high temperatures. With a melting point of about 2360 °C, it is a promising material for ultra-high temperature applications in turbine engines. However, Mo-9Si-8B (at.%) is difficult to process by traditional manufacturing methods due to its brittleness. Additive manufacturing offers a solution by enabling the production of complex near-net-shape bulk materials (e.g., turbine blades) in a single step. In this study, electron beam powder bed fusion (PBF-EB), which is characterized by extremely high local processing temperatures and associated high powder bed temperatures (i.e., above the brittle-to-ductile transition temperature of the material), was employed to process this Mo-Si-B alloy. The processing window was rapidly developed for the first time using novel strategies that combine high-throughput thermal modeling to predict the melt pool dimensions with in situ electron-optical imaging. High-density bulk Mo-9Si-8B (at.%) samples were successfully fabricated according to the established processing window, and the typical microstructure and phase composition of the as-built samples were analyzed. This novel approach significantly reduces the effort required to generate processing windows, making it highly viable for developing stable processing conditions for new materials in PBF-EB.","PeriodicalId":36643,"journal":{"name":"Progress in Additive Manufacturing","volume":"10 10","pages":"8311-8320"},"PeriodicalIF":5.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12479609/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

4D fabrication of shape-changing systems for tissue engineering: state of the art and perspectives. 组织工程的形状变化系统的4D制造：艺术和观点的状态。

IF 4.4

Progress in Additive Manufacturing Pub Date : 2025-01-01 Epub Date: 2024-08-12 DOI: 10.1007/s40964-024-00743-5

Lorenzo Bonetti, Giulia Scalet

{"title":"4D fabrication of shape-changing systems for tissue engineering: state of the art and perspectives.","authors":"Lorenzo Bonetti, Giulia Scalet","doi":"10.1007/s40964-024-00743-5","DOIUrl":"10.1007/s40964-024-00743-5","url":null,"abstract":"In recent years, four-dimensional (4D) fabrication has emerged as a powerful technology capable of revolutionizing the field of tissue engineering. This technology represents a shift in perspective from traditional tissue engineering approaches, which generally rely on static-or passive-structures (e.g., scaffolds, constructs) unable of adapting to changes in biological environments. In contrast, 4D fabrication offers the unprecedented possibility of fabricating complex designs with spatiotemporal control over structure and function in response to environment stimuli, thus mimicking biological processes. In this review, an overview of the state of the art of 4D fabrication technology for the obtainment of cellularized constructs is presented, with a focus on shape-changing soft materials. First, the approaches to obtain cellularized constructs are introduced, also describing conventional and non-conventional fabrication techniques with their relative advantages and limitations. Next, the main families of shape-changing soft materials, namely shape-memory polymers and shape-memory hydrogels are discussed and their use in 4D fabrication in the field of tissue engineering is described. Ultimately, current challenges and proposed solutions are outlined, and valuable insights into future research directions of 4D fabrication for tissue engineering are provided to disclose its full potential.","PeriodicalId":36643,"journal":{"name":"Progress in Additive Manufacturing","volume":"10 4","pages":"1913-1943"},"PeriodicalIF":4.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11926060/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143693766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of strain tomography and contour method to residual stress analysis in additively manufactured CM247LC superalloy parts. 应变层析成像和轮廓法在增材制造CM247LC高温合金零件残余应力分析中的应用。

IF 5.4

Progress in Additive Manufacturing Pub Date : 2025-01-01 Epub Date: 2025-04-23 DOI: 10.1007/s40964-025-01116-2

Fatih Uzun, Mohamed Fares Slim, Hector Basoalto, Konstantinos Liogas, Zifan Ivan Wang, Alexander M Korsunsky

{"title":"Application of strain tomography and contour method to residual stress analysis in additively manufactured CM247LC superalloy parts.","authors":"Fatih Uzun, Mohamed Fares Slim, Hector Basoalto, Konstantinos Liogas, Zifan Ivan Wang, Alexander M Korsunsky","doi":"10.1007/s40964-025-01116-2","DOIUrl":"10.1007/s40964-025-01116-2","url":null,"abstract":"Residual stresses are recognized as a critical factor influencing the mechanical performance and structural integrity of additively manufactured parts, particularly in nickel-based superalloys. Although the contour method and strain tomography have been applied independently for residual stress evaluation of such materials, a direct comparison of their reconstructions in laser powder bed fusion fabricated specimens has not been reported. In this study, both techniques were employed on identically produced specimens of CM247LC superalloy, and a strong qualitative agreement in residual elastic strain distributions was observed. Using the contour method, tensile residual stresses up to +1300 MPa were identified near the specimen edges, while compressive stresses approaching - 600 MPa were found in the central regions. Strain tomography, based on synchrotron X-ray diffraction, was used to non-destructively reconstruct internal residual elastic strain fields, revealing consistent trends and capturing localized variations aligned with the contour method. Through this integrated approach, a complete validation of stress reconstruction was achieved, and new insights into the stress evolution of laser powder bed fusion manufactured CM247LC were provided. The findings demonstrate how the complementary strengths of these techniques can be leveraged for improved residual stress characterization in high-performance superalloy parts.","PeriodicalId":36643,"journal":{"name":"Progress in Additive Manufacturing","volume":"10 10","pages":"8279-8291"},"PeriodicalIF":5.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12479594/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multimodal defect analysis and application of virtual machining for solid-state manufactured aluminium structure. 固态铝构件虚拟加工的多模态缺陷分析及应用。

IF 4.4

Progress in Additive Manufacturing Pub Date : 2025-01-01 Epub Date: 2024-12-10 DOI: 10.1007/s40964-024-00904-6

Vladislav Yakubov, Halsey Ostergaard, Shishira Bhagavath, Chu Lun Alex Leung, James Hughes, Evren Yasa, Mani Khezri, Sandra K Löschke, Qing Li, Anna M Paradowska

{"title":"Multimodal defect analysis and application of virtual machining for solid-state manufactured aluminium structure.","authors":"Vladislav Yakubov, Halsey Ostergaard, Shishira Bhagavath, Chu Lun Alex Leung, James Hughes, Evren Yasa, Mani Khezri, Sandra K Löschke, Qing Li, Anna M Paradowska","doi":"10.1007/s40964-024-00904-6","DOIUrl":"10.1007/s40964-024-00904-6","url":null,"abstract":"Additive friction stir deposition (AFSD) is an emerging solid-state non-fusion additive manufacturing (AM) technology, which produces parts with wrought-like material properties, high deposition rates, and low residual stresses. However, impact of process interruption on defect formation and mechanical properties has not yet been well addressed in the literature. In this study, Al6061 aluminium structure with two final heights and deposition interruption is successfully manufactured via AFSD and characterised. Defect analysis conducted via optical microscopy, electron microscopy, and X-ray computed tomography reveals > 99% relative density with minimal defects in centre of the parts. However, tunnel defects at interface between substrate and deposit as well as kissing bonds are present. Edge of deposit contains tunnel defects due to preference for greater material deposition on advancing side of rotating tool. Virtual machining highlights the ability to remove defects via post-processing, avoiding mechanical performance impact of stress concentrating pores. Electron backscatter diffraction revealed regions with localised shear bands that contain 1-5 µm equivalent circular diameter grains. Kissing bonds are exhibited in areas separated by large grain size difference. Meanwhile, Vickers hardness testing reveals hardness variation with deposit height. This work advances the understanding of complex microstructure development, material flow, and mechanical behaviour of AFSD Al6061 alloy.Supplementary information: The online version contains supplementary material available at 10.1007/s40964-024-00904-6.","PeriodicalId":36643,"journal":{"name":"Progress in Additive Manufacturing","volume":"10 8","pages":"5281-5297"},"PeriodicalIF":4.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12267324/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144676044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of inter- and intra-layer delay time on TPU parts fabricated by laser powder bed fusion. 层间和层内延迟时间对激光粉末床熔敷TPU零件的影响。

IF 4.4

Progress in Additive Manufacturing Pub Date : 2025-01-01 Epub Date: 2025-01-09 DOI: 10.1007/s40964-024-00933-1

Samuel Connor, Ruth Goodridge, Ian Maskery

{"title":"The effect of inter- and intra-layer delay time on TPU parts fabricated by laser powder bed fusion.","authors":"Samuel Connor, Ruth Goodridge, Ian Maskery","doi":"10.1007/s40964-024-00933-1","DOIUrl":"10.1007/s40964-024-00933-1","url":null,"abstract":"In polymer laser powder bed fusion (PBF-LB-P) techniques, such as laser sintering, the time between scanning a given point in one layer and the same x-y point in the next layer is known as the 'inter-layer delay time'. Multiple parts are normally fabricated in a PBF-LB-P build for efficiency; however, this leads to variation in the inter-layer delay time for individual parts; in this study, we present a specific investigation using a commercially available thermoplastic polyurethane (TPU). Multiple part layouts were used and the resulting parts were subject to tensile testing and fracture surface analysis. The results demonstrate that an increase in inter-layer delay time can lead to a significant reduction in mechanical properties. Fabricating specimens in groups of 5 led to a 10% reduction in ultimate tensile strength, 30% reduction in extension at break, and 15 <math><mo>%</mo></math> reduction in Young's modulus compared to specimens fabricated individually. Fractography suggests this is due to decreased inter-layer bonding and an increase in defects. This has significant implications for the production of multiple parts in a build where consistent mechanical properties are critical. Based on our understanding of this detrimental effect, we put forward a novel build packing approach for PBF-LB-P, based on scanning area equivalence rather than the conventional time minimisation, to mitigate against it.","PeriodicalId":36643,"journal":{"name":"Progress in Additive Manufacturing","volume":"10 8","pages":"5661-5674"},"PeriodicalIF":4.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12267361/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144676045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fused filament fabrication of polyetheretherketone in vacuum: the influence of high vacuum on layer adhesion in z-orientation. 真空中聚醚醚酮熔丝的制备：高真空对z向层粘接的影响。

IF 4.4

Progress in Additive Manufacturing Pub Date : 2025-01-01 Epub Date: 2024-12-08 DOI: 10.1007/s40964-024-00897-2

Marina Kühn-Kauffeldt, Marvin Kühn, Christoph Mittermeier, Josef Kiendl

引用次数: 0

A 4D printed self-assembling PEGDA microscaffold fabricated by digital light processing for arthroscopic articular cartilage tissue engineering. 利用数字光处理技术制造的用于关节镜关节软骨组织工程的 4D 打印自组装 PEGDA 显微支架。

Progress in Additive Manufacturing Pub Date : 2024-01-01 Epub Date: 2022-11-09 DOI: 10.1007/s40964-022-00360-0

Yunjie Hao, Chuanyung Wu, Yuchuan Su, Jude Curran, James R Henstock, Fangang Tseng

{"title":"A 4D printed self-assembling PEGDA microscaffold fabricated by digital light processing for arthroscopic articular cartilage tissue engineering.","authors":"Yunjie Hao, Chuanyung Wu, Yuchuan Su, Jude Curran, James R Henstock, Fangang Tseng","doi":"10.1007/s40964-022-00360-0","DOIUrl":"10.1007/s40964-022-00360-0","url":null,"abstract":"Articular cartilage in synovial joints such as the knee has limited capability to regenerate independently, and most clinical options for focal cartilage repair merely delay total joint replacement. Tissue engineering presents a repair strategy in which an injectable cell-laden scaffold material is used to reconstruct the joint in situ through mechanical stabilisation and cell-mediated regeneration. In this study, we designed and 3D-printed millimetre-scale micro-patterned PEGDA biomaterial microscaffolds which self-assemble through tessellation at a scale relevant for applications in osteochondral cartilage reconstruction. Using simulated chondral lesions in an in vitro model, a series of scaffold designs and viscous delivery solutions were assessed. Hexagonal microscaffolds (750 μm x 300 μm) demonstrated the best coverage of a model cartilage lesion (at 73.3%) when injected with a 1% methyl cellulose solution. When chondrocytes were introduced to the biomaterial via a collagen hydrogel, they successfully engrafted with the printed microscaffolds and survived for at least 14 days in vitro, showing the feasibility of reconstructing stratified cartilaginous tissue using this strategy. Our study demonstrates a promising application of this 4D-printed injectable technique for future clinical applications in osteochondral tissue engineering.Supplementary information: The online version contains supplementary material available at 10.1007/s40964-022-00360-0.","PeriodicalId":36643,"journal":{"name":"Progress in Additive Manufacturing","volume":"9 1","pages":"3-14"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10851926/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139708103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of printing parameters on in-plane tensile and fracture toughness of fused filament fabricated PEEK 印刷参数对熔融长丝制造聚醚醚酮面内拉伸和断裂韧性的影响

Progress in Additive Manufacturing Pub Date : 2023-12-29 DOI: 10.1007/s40964-023-00554-0

M. Refat, E. Zappino, A. Pagani

引用次数: 0

A machine learning methodology for porosity classification and process map prediction in laser powder bed fusion 激光粉末床熔融中孔隙率分类和工艺图预测的机器学习方法

Progress in Additive Manufacturing Pub Date : 2023-12-23 DOI: 10.1007/s40964-023-00544-2

Adrianna Staszewska, Deepali P. Patil, Akshatha C. Dixith, R. Neamtu, D. Lados

引用次数: 0