3D Printing and Additive Manufacturing最新文献

{"title":"Preparation of Biomimetic Shells from Biomass Based on Selective Laser Sintering Technology.","authors":"Long Shi, Jian Li, Hao Zhang, Ting Li","doi":"10.1089/3dp.2024.0197","DOIUrl":"10.1089/3dp.2024.0197","url":null,"abstract":"<p><p>Shells, a type of food waste, present a notable challenge in achieving high-value applications in the environmental sector owing to their complex compositions, limited recycling applications, and the environmental impact of improper disposal. This study conducts a comparative analysis of the mechanical properties of five types of natural shells: veined red snail, mussel, oyster, scallop, and green willow clam. Shell powders and polylactic acid (PLA) were used as the inorganic and organic components of shells, respectively. The laser sintering mechanism for forming these components was explored, resulting in the fabrication of five biomimetic shells. Results showed that the flexural strength decreased in the order of veined red snail > mussel > scallop > green willow clam > oyster. The flexural strength values of laser-sintered specimens made from five shell powder/PLA composites corresponded closely to those of their respective shells, with values of 8.6, 8.1, 7.6, 6.9, and 6.1 MPa. These values exceeded those of pure PLA specimens. Furthermore, the compressive load capacity of 3D-printed biomimetic veined red snail parts, 3D-printed biomimetic mussel parts, 3D-printed oyster parts, 3D-printed biomimetic scallop parts, and 3D-printed biomimetic green willow clam parts reached 76.69%, 19.10%, 5.57 times, 26.66%, and 70.46%, of the load capacities of the natural shell counterparts, respectively.</p>","PeriodicalId":54341,"journal":{"name":"3D Printing and Additive Manufacturing","volume":"13 1","pages":"114-125"},"PeriodicalIF":2.1,"publicationDate":"2026-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13102126/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147935375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and Numerical Analysis of Titanium 3D Body-Centered Cubic Lattice Structure Additively Manufactured Using Selective Laser Melting.","authors":"Asadullah Jan, Adnan Munir, Muhammad Rizwan Ul Haq, Muhammad Salman Khan, Ahsan Kaleem, Muhammad N Ahsan, Aqeel A Khurram, Mehmood Khan","doi":"10.1089/3dp.2024.0122","DOIUrl":"10.1089/3dp.2024.0122","url":null,"abstract":"<p><p>This study investigates the mechanical responses in three-point bending and compression of body-centered cubic (BCC) for specific aerospace applications to achieve lightweight and improved mechanical properties. The mechanical characteristics of functionally graded BCC lattice structures were explored, resulting in enhanced mechanical features compared with uniform-graded BCC lattice structures. Due to the gradient lattice structure, the average bending load significantly increased to 62.5%. It was found that the BCC lattice structure only exhibits a dual failure model comprising buckling and fracture, compared with other lattice structures that often offer sole buckling or fracture failure. The buckling of the struts starts from the bottom and ends with a fracture. BCC lattice sandwiches provide an opportunity to balance strength and weight ratio effectively. The experimental findings showed close agreement with finite element results. Numerical modeling illustrates the stress-strain and force-deformation curves, and the failure mechanism is the strut buckling triggered from the plastic hinges with high-stress levels.</p>","PeriodicalId":54341,"journal":{"name":"3D Printing and Additive Manufacturing","volume":"13 1","pages":"78-89"},"PeriodicalIF":2.1,"publicationDate":"2026-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13102124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147935414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A simple, efficient technique to make colon crypt gels for 3D models.","authors":"Maria A Bieberich, Narendra Pandala, Ishanathan Guteng, Victor Kehinde, Ezinne Oguguo, Rebecca Carrier, Erin Lavik","doi":"10.1177/23297662251389590","DOIUrl":"10.1177/23297662251389590","url":null,"abstract":"<p><p>An <i>in vitro</i> colon model, particularly one suited to high throughput screening, has the potential to enhance understanding of cellular mechanisms and functions important in intestinal health and can be used for drug testing and drug permeation studies. While extensively studied, traditional monolayered cultures using immortalized colon cancer cell lines on transwell plates fail to accurately replicate the native intestinal epithelium's complex architecture. To address this limitation, we have developed a novel, facile photopolymerization technique to fabricate scaffolds that closely resemble colon crypts. We have further developed a method using screen printing to be able to coat these scaffolds while preserving the crypt architecture in order to vary the surface chemistry of these systems. This paper focuses on the development of three-dimensional crypt models that can be made with simple equipment and with chemical precursors that are commercially available to make building tissue models more accessible to the broader research community.</p>","PeriodicalId":54341,"journal":{"name":"3D Printing and Additive Manufacturing","volume":" ","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12599905/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145497503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biopolymer Hydroxypropyl Methylcellulose-Based Filaments Prepared by Hot-Melt Extrusion Suitable for Fused Deposition Modeling 3D Printing of Personalized Capsules.","authors":"Jana Macháčková, Alena Komersová, Marie Nevyhoštěná, Roman Svoboda, Martin Bartoš, Kevin Matzick","doi":"10.1089/3dp.2024.0030","DOIUrl":"10.1089/3dp.2024.0030","url":null,"abstract":"<p><p>Materials based on the hydroxypropyl methylcellulose mixed with different biopolymers (BioP; 5 w% of chitosan, sodium alginate, apple pectin, or citrus pectin) were processed by hot-melt extrusion and 3D printing to produce capsules intended for controlled drug release. Microscopic analyses confirmed significant impact of BioP on the processing temperatures and quality of the 3D printing. The capsules' chemical composition had a more significant impact on the dissolution profiles in acidic and neutral media, which are a robust function of the intermolecular bonds and swelling characteristics of the particular BioP (as indicated by the combined results of Raman spectroscopy, differential scanning calorimetry [DSC], and thermogravimetry). The capsules of all tested compositions retained the model drug for 120 min in pH 1.2, i.e., fulfilled the condition of targeting the small intestine. The presence of the particular BioP was found to be particularly beneficial in the development of personalized capsules for oral administration. The addition of both pectins led to a relatively fast pH-independent release of the model drug and has the potential applications in the targeting of the duodenum or jejunum. The capsules containing alginate and chitosan exhibited later initial release in pH 1.2, guaranteeing an unaltered passage through the stomach environment.</p>","PeriodicalId":54341,"journal":{"name":"3D Printing and Additive Manufacturing","volume":"12 5","pages":"553-564"},"PeriodicalIF":2.5,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12670669/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145670792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outcomes and Workflow in a Titanium Powder Bed Fusion Cranial Reparation Surgery Service.","authors":"Tommi K Korhonen, Ivan Timofeev, Harry Mee, Gemma Whiting, Geoffrey Oliver, Ben Snell, Finlay Wescott, Ben Collins, Edoardo Viaroli, Nicola Owen, Kirsty Grieve, Angelos Kolias, Peter J Hutchinson, Adel Helmy","doi":"10.1089/3dp.2023.0321","DOIUrl":"10.1089/3dp.2023.0321","url":null,"abstract":"<p><p>Cranial reconstruction, cranioplasty, is conducted to repair skull defects caused by craniectomy following traumatic brain injury, stroke, or postoperative infection. Complications requiring implant removal occur in 10-20% of cases as the optimal cranioplasty material is not known. We describe the Cambridge University Hospital's (CUH) multidisciplinary cranial reparation service and aim to assess the safety of the workflow compared with existing technologies. We retrospectively analyzed the medical records of all patients who underwent cranioplasty via the CUH cranioplasty pathway with cranioplasty implants manufactured utilizing grade 23 Ti-6Al-4V powder bed fusion (PBF) between December 2017 and December 2021. The primary and secondary outcomes were implant removal and the occurrence of cranioplasty infections, respectively. We identified 107 cranioplasty procedures performed in 105 patients, who were followed for a median time of 34.9 months (interquartile range 46.7-17.7, range 2 days to 60.2 months). Twenty-four (22%) patients had at least one complication, and 11 (10%) cranioplasties had been removed because of complications. Thirteen (12%) patients had surgical site infections, but only eight (7%) cranioplasties had to be removed because of infections. Placement of a cerebrospinal fluid shunt (hazard ratio [HR] 8.57, 95% confidence interval [CI] 2.36-31.12) and high American Society of Anesthesiologists grade (HR 6.87, 95% CI 1.66-28.39) predicted shorter cranioplasty survival. We demonstrated the largest currently published series of titanium cranioplasties produced using PBF-the overall complication and removal rates (22% and 10%, respectively) were comparable with those reported in the literature. We have embedded the key steps and skills in the cranioplasty process in an academic setting allowing for tailored surgery and flexibility to develop further service innovations in the future. Patients with cerebrospinal fluid shunts and those in poor general condition were at increased risk of infections and subsequent cranioplasty failure.</p>","PeriodicalId":54341,"journal":{"name":"3D Printing and Additive Manufacturing","volume":"12 5","pages":"542-552"},"PeriodicalIF":2.5,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12670689/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145670844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Direct Tensile Behavior of Three-Dimensional-Printable Steel Fiber-Reinforced Ultrahigh Performance Concrete.","authors":"Tao Ding, Ruitao Zhu, Kequan Yu, Jianzhuang Xiao","doi":"10.1177/23297662251387692","DOIUrl":"10.1177/23297662251387692","url":null,"abstract":"<p><p>To investigate the tensile behavior of 3D-printed ultrahigh performance concrete (UHPC), this study developed a 3D-printable steel fiber-reinforced UHPC with a cube compressive strength of up to 115 MPa. Through direct tension tests on dogbone specimens and computed tomography scanning, the influence of the 3D printing methods, specimen thickness and number of specimen layers on the failure mode, cracking strength, peak strength, energy absorption, and orientation of steel fibers in 3D-printed UHPC was analyzed in detail. The results indicate that under direct tension, the failure mode of the 3D-printed UHPC specimens remained in the tensile test section, with no significant difference from those of the cast UHPC specimens. After cracking, a large number of steel fibers were observed in the cracks of the 3D-printed UHPC specimens, forming the effect of a \"steel fiber bridge\" and exhibiting a trend of directional orientation along the printing direction. This was notably different from the relatively random orientation of steel fibers in the cast specimens. The experimental results show that with 3D printing preparation, the orderly arrangement of steel fibers could significantly improve the tensile performance of UHPC. Moreover, by reducing the nozzle thickness, the steel fibers can be distributed in a wide range along the printing direction. Therefore, the peak tensile stress, peak strain, and energy absorption values of the 3D-printed UHPC specimens could be significantly increased.</p>","PeriodicalId":54341,"journal":{"name":"3D Printing and Additive Manufacturing","volume":"13 5","pages":"444-460"},"PeriodicalIF":2.5,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13562893/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148957323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Embedding of Liquids into Water-Soluble Materials via Additive Manufacturing for Timed Release.","authors":"Callie Zawaski, Abby Whittington, Timothy Long, Christopher Williams","doi":"10.1089/3dp.2023.0015","DOIUrl":"10.1089/3dp.2023.0015","url":null,"abstract":"<p><p>The ability to customize products with additive manufacturing allows manufacturers to meet the unique requirements and functionality for individual applications. By printing dissolvable materials as a matrix material, the release of active agents over time can be tailored on a per part basis by varying both geometry and printed material properties. Direct printing of actives via filament material extrusion is challenging because many active agents become inactive at the elevated temperatures found in the melt-based process. This limitation is circumvented by <i>in situ</i> embedding the active agents into <i>a priori</i> designed voids of a printed water-soluble capsule. In this work, this process is demonstrated by the <i>in situ</i> deposition of liquids and powders into thin-walled, water-soluble, printed structures. The authors demonstrate the ability to tune dissolution time by varying the thickness of a printed part's walls in order to create a delay in release and by creating parts with multiple chambers to initiate a multistaged release. This ability provides opportunities for creating customized containers for the prescribed release of liquid and powdered active agents.</p>","PeriodicalId":54341,"journal":{"name":"3D Printing and Additive Manufacturing","volume":"12 5","pages":"565-575"},"PeriodicalIF":2.5,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12670681/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145670705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Error Analysis and Correction for Electrohydrodynamic Printing: A Review.","authors":"Nian Cai, Xiaona Chen, Weicheng Ou, Zhouyixiao Wu, Gaofeng Zheng, Han Wang, Jun Zeng","doi":"10.1089/3dp.2023.0313","DOIUrl":"10.1089/3dp.2023.0313","url":null,"abstract":"<p><p>Electrohydrodynamic (EHD) technology is renowned for its significant advantages in high resolution and micro-nanoscale printing, demonstrating an immense potential in the development of micro-nano devices. During the printing process, it is inevitably influenced by different interferences, which result in printing errors that influence its printing precision. This article summarizes several research topics on printing errors of EHD printing technology, involving the sources, and correction of different types of printing errors. First, the induced factors of printing errors are summarized in details, which are used to categorize the error correction methods. Then, the existing correction methods are comprehensively summarized and analyzed according to the types of printing errors. Finally, the conclusions are provided, involving some potential research topics.</p>","PeriodicalId":54341,"journal":{"name":"3D Printing and Additive Manufacturing","volume":"12 5","pages":"518-541"},"PeriodicalIF":2.5,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12670664/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145670708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing Biocompatibility: 3D-Printed Cyclic Olefin Copolymer Structures for Advanced Laboratory Applications.","authors":"Simon Höving, Stefanie Dörr, Marc Akermann, Arthur Schiller, Kristina Lorenz, Daniel Schwendemann, Joachim Franzke, Sebastian Brandt","doi":"10.1089/3dp.2023.0261","DOIUrl":"10.1089/3dp.2023.0261","url":null,"abstract":"<p><p>Additive manufacturing, particularly 3D-printing, has emerged as a crucial method for creating prototypes and specialized components in various scientific fields. This study investigates the biocompatibility and performance of 3D-printed materials, with focus on cyclic olefin copolymer (COC) in comparison with traditional materials such as polylactic acid (PLA) and COC combined with glass (Glass + COC) inlays. Biocompatibility is especially critical for cell-based research and millifluidic applications, impacting cell culture experiments and the interaction of 3D-printed structures with reactive substances. To investigate material influence, experiments were conducted using rat cardiomyocyte (H9c2) and human embryonal kidney (HEK293) cell lines, with comprehensive assays including lactate, lactate dehydrogenase (LDH), and thiazolyl blue tetrazolium bromide assays assessing metabolic activity, cell stress, and cell viability. Results demonstrated that Glass + COC exhibited increased metabolic activity and cell viability compared with standard polystyrene (PS) culture dishes, with COC and PLA materials showing comparable viability with standard PS dishes, although with slight differences favoring COC. Lactate assays revealed subtle increases in lactate secretion, notably in Glass + COC cultures, suggesting a correlation with cell viability. LDH assays provided insights into potential material-associated toxicity. Microscopy experiments visually confirmed cell growth and distribution within culture vials, using various transparent materials, including PLA foil, COC foil, standard microscope glass slides, and Glass + COC. Furthermore, atomic force microscopy (AFM) examined surface roughness and differences between the upper and lower surfaces of 3D-printed PLA and COC parts, contributing to the understanding of material surface characteristics. In conclusion, this study highlights the biocompatibility of 3D-printed materials for cell-based research, emphasizing the potential of COC and Glass + COC manufactured via 3D-printing for such applications. The interplay among cell viability, metabolic activity, and lactate levels underscores the importance of material selection. Microscopy and AFM analyses enhance the comprehension of cell growth behavior and surface properties, advancing the selection of 3D-printed materials for biocompatible applications.</p>","PeriodicalId":54341,"journal":{"name":"3D Printing and Additive Manufacturing","volume":"12 5","pages":"474-481"},"PeriodicalIF":2.5,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12670670/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145670748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Double-Wire Additive Manufacturing Process of Functionally Graded Material by Robotic Arc Welding.","authors":"Wei Wu, Ping Yao, Zhigang Li, Chunjie Wen, Wei Xu","doi":"10.1089/3dp.2024.0056","DOIUrl":"10.1089/3dp.2024.0056","url":null,"abstract":"<p><p>In order to enhance the durability, high temperature corrosion resistance, and strength of SS316L in industrial applications, it is recommended to utilize Inconel 625 as a more efficient and costly covering material. Consequently, a double-wire and double-pulse metal inert gas welding process was employed to fabricate two thin-walled SS316L/Inconel 625 functionally graded materials (FGMs) with gradients of 25% and 5%. Subsequent analysis focused on the morphology, microstructure, and properties of the fabricated materials. The findings indicated that this process is a recommended method for manufacturing gradient materials. A consistent transition gradient of 5% resulted in a more stable deposition process, higher forming efficiency, and improved material properties. Evident fractures were observed along the dendrite growth in 75% SS316L area, specifically at the boundary of cellular dendrites analyzed by energy dispersive spectrometer and electron backscattered diffraction. Furthermore, hardness increased and tensile strength decreased along the build direction, specifically the lowest tensile strength was observed in the 75% SS316L/25% Inconel 625 area. Consequently, when selecting gradients for stainless steel and nickel alloy materials, it is advisable to avoid proximity to the 75% SS316L region when dealing with two dissimilar materials. The manufactured FGMs in this study were superior to the wrought value, then the mechanical properties were higher than SS316L and lower than Inconel 625 manufacturing of single material, and the anisotropy was not obvious, in addition, the cost of FGM is lower than that of single /Inconel 625 material. It can improve the problem that the gradient transition zone is easy to fail, reduce the cost, and extend the service life of the parts while meeting performance requirements. Therefore, this achievement can have a significant impact on enhancing the service life and preventing premature failure of dissimilar structure components.</p>","PeriodicalId":54341,"journal":{"name":"3D Printing and Additive Manufacturing","volume":"13 4","pages":"363-375"},"PeriodicalIF":2.5,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13428133/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148654578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}