共查询到19条相似文献，搜索用时 46 毫秒
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3D打印材料的发展现状 总被引：3，自引：0，他引：3
3D打印,又称作增材制造,是快速成型技术的一种,被誉为“第三次工业革命”的核心技术．材料是3D打印的物质基础,也是当前制约3D打印发展的瓶颈．文章综述了3D打印材料的发展现状,重点介绍了用于3D打印的几类主要材料,并指出了当前3D打印材料发展所面临的问题． 相似文献
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目的：为满足航天器对树脂导热性能的要求,解决3D打印复杂零件时导热效率低的问题,本研究提出一种新型连续中间相沥青基碳纤维/热塑性聚氨酯/环氧树脂（CMPCF/TPU/epoxy）复合长丝并介绍其制备工艺。创新点：1.该复合长丝的制备基于连续中间相沥青基碳纤维（CMPCF）的高导热性能、热塑性聚氨酯（TPU）的高弹性和环氧树脂（epoxy）的耐高温性能。2.沿导热方向打印长丝,并提出热固性复合丝材打印件的新固化方式。方法：1.采用上浆剂法进行表面上浆,选取水溶性聚氨酯作为表面上浆剂,提升连续中间相沥青基碳纤维聚束性。2.通过增韧预处理,选取TPU作为增韧基体材料,在上浆后的碳纤维束外包裹一层具有高韧性高强度的树脂层。3.采用浸涂处理工艺,选取固态环氧树脂,成功制备出高导热CMPCF/TPU/epoxy复合丝材。4.沿导热方向规划打印路径并进行打印测试,验证复合长丝的可打印性和打印件的导热系数。结论：1.通过对CMPCF进行表面上浆、增韧预处理和预浸处理,成功制备出高导热性能的CMPCF/TPU/epoxy复合长丝;在CMPCF外包裹TPU,解决了CMPCF因脆性而难以打印的问题。2.3D... 相似文献
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被喻为第三次工业革命的重要标志之一的3D打印技术,正声势浩大地进入人们的视野。3D打印技术虽已广泛应用于建筑、工业、医学等诸多领域,但在基础教育应用领域还处于起步、探索的初级阶段。本文从文献研究与教学实践经验入手,介绍了3D打印在小学教学中的应用探索;进一步分析了3D打印对培养学生空间思维、创新能力的重要意义;最后讨论了目前3D打印应用于教学的前景、困惑与思考。 相似文献
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文章分析非圆齿轮的结构参数特征,完成了非圆齿轮的3D设计,利用SolidWorks软件建立非圆齿轮的三维模型,并生成STL文件,最后采用3D打印技术打印出非圆齿轮。文章提出的方法与实验为非圆齿轮的智能加工提供了新思路。 相似文献
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3D打印技术在教学中的应用,可以通过“看得见摸得着”的模型来提高学生的空间思维想象能力与绘图能力,进而有效提升教学质量。本文以机械制图课程教学的现状及3D打印产品的优势分析为出发点,探讨了机械制图课堂教学中应用3D打印产品对提升学生机械制图能力、模型设计制造能力的作用。 相似文献
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为了提高小学生空间想象能力和计算机操作能力,3D创意设计工作室将3D打印技术引入小学综合实践课堂,开发了适合小学生的3D设计与3D打印技术课程,并编写一部3D打印特色教材。教材中引入角色小人物,由小故事将读者带入3D打印世界,同时将三维图形与手绘人物相结合,深深吸引读者持续不断地学习。经实际授课应用,证明该教材满足小学生需求,不仅丰富了小学生的综合实践课堂,更激发了小学生的创新创业热情。 相似文献
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3D打印是创客和创客教育不可缺少的“利器”,尽管很多高职院校都采购了3D打印设备,但是由于课程开发不成熟,效率并不高。文章提出了基于STEAM理念开发3D打印课程,构建3D打印创新教育培养的“4C”能力模型,认为STEAM融入3D打印教学具有创新、整合和实践三大价值取向,并开展了3D打印课程开发模式研究,开发了《3D打印创意与设计》课程,令学生在体验学习的过程中建构科学、技术、工程、艺术和数学等跨界知识以及创新意识和能力,对丰富高职创新创业教育理论具有一定的价值。 相似文献
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近年来,3D打印成为人们关注的热点,并逐步走进教育领域。为了让学生们更好地适应时代发展,东路小学在区教育局教师进修学校信息技术教研部的指导下顺利地开展了创客教育,使创客教育走进东路小学的课堂。学校开设了“3D打印创意工作室”特色课程,学生们在老师的带领下进行广泛的学习和探索。利用计算机完成各种图形,以数字模型文件为基础建模,利用 3D打印机(一种具有快速成型功能的仪器)将粉末状金属或塑料等可黏合材料,通过逐层打印的方式来构造物体。 相似文献
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Claire F. Smith Nicholas Tollemache Derek Covill Malcolm Johnston 《Anatomical sciences education》2018,11(1):44-53
Understanding the three‐dimensional (3D) nature of the human form is imperative for effective medical practice and the emergence of 3D printing creates numerous opportunities to enhance aspects of medical and healthcare training. A recently deceased, un‐embalmed donor was scanned through high‐resolution computed tomography. The scan data underwent segmentation and post‐processing and a range of 3D‐printed anatomical models were produced. A four‐stage mixed‐methods study was conducted to evaluate the educational value of the models in a medical program. (1) A quantitative pre/post‐test to assess change in learner knowledge following 3D‐printed model usage in a small group tutorial; (2) student focus group (3) a qualitative student questionnaire regarding personal student model usage (4) teaching faculty evaluation. The use of 3D‐printed models in small‐group anatomy teaching session resulted in a significant increase in knowledge (P = 0.0001) when compared to didactic 2D‐image based teaching methods. Student focus groups yielded six key themes regarding the use of 3D‐printed anatomical models: model properties, teaching integration, resource integration, assessment, clinical imaging, and pathology and anatomical variation. Questionnaires detailed how students used the models in the home environment and integrated them with anatomical learning resources such as textbooks and anatomy lectures. In conclusion, 3D‐printed anatomical models can be successfully produced from the CT data set of a recently deceased donor. These models can be used in anatomy education as a teaching tool in their own right, as well as a method for augmenting the curriculum and complementing established learning modalities, such as dissection‐based teaching. Anat Sci Educ 11: 44–53. © 2017 American Association of Anatomists. 相似文献
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3D打印技术在中小学教学中的应用研究 总被引：1，自引：0，他引：1
2013年伊始,3D打印技术突然成为人们关注的热点,由工业、建筑、军事等应用领域逐渐走向民用领域.教育领域,特别是基础教育领域应用3D打印技术还处于起步、探索阶段.文章介绍了什么是3D打印技术;3D打印技术在本质上是多媒体技术的延伸,是虚拟现实技术的延伸,它拓展了人的感觉和知觉,促进了人的思维能力的进一步发展;列举了3D打印技术在中小学学科教学中应用的几个案例;3D打印技术目前面临的一些诸如普及慢、成本高、速度慢等局限性.最后指出,3D打印技术作为第三次工业革命的重要标志之一,未来4～5年,必将普遍走进中小学课堂,必将对现有教学产生深刻的影响和变革. 相似文献
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王馨怡 《安庆师范学院学报(社会科学版)》2019,38(3):69-73
3D打印技术在为人们的生产、生活带来便利的同时也潜藏着诸多的安全风险:3D打印枪支对人身安全带来的风险,3D打印药物对健康保障带来的风险,3D打印侵权对资源所有权带来的风险,3D打印信用卡、钥匙、人脸面具对财产所有权带来的风险,3D打印人体组织对道德保障带来的风险,3D打印颠覆行业模式对工作职位保障带来的风险。面对3D打印技术的安全风险,政府和社会应采取有力的管控措施,消除不确定感,建立安全感,增强控制感。 相似文献
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Jordan M. Renna;Katelyn B. Sondereker;Christopher L. Cors;Sara N. Chaszeyka;Kristin N. Keenan;Michael R. Corigliano;Lindsey A. Milgrom;Jessica R. Onyak;Edward J. Hamad;Maureen E. Stabio; 《Anatomical sciences education》2024,17(3):499-505
The reconstruction of two-dimensional (2D) slices to three-dimensional (3D) digital anatomical models requires technical skills and software that are becoming increasingly important to the modern anatomist, but these skills are rarely taught in undergraduate science classrooms. Furthermore, learning opportunities that allow students to simultaneously explore anatomy in both 2D and 3D space are increasingly valuable. This report describes a novel learning activity that trains students to digitally trace a serially imaged neuron from a confocal stack and to model that neuron in 3D space for 3D printing. By engaging students in the production of a 3D digital model, this learning activity is designed to provide students a novel way to enhance their understanding of the content, including didactic knowledge of neuron morphology, technical research skills in image analysis, and career exploration of neuroanatomy research. Moreover, students engage with microanatomy in a way that starts in 2D but results in a 3D object they can see, touch, and keep. This discursive article presents the learning activity, including videos, instructional guides, and learning objectives designed to engage students on all six levels of Bloom's Taxonomy. Furthermore, this work is a proof of principle modeling workflow that is approachable, inexpensive, achievable, and adaptable to cell types in other organ systems. This work is designed to motivate the expansion of 3D printing technology into microanatomy and neuroanatomy education. 相似文献
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Sreenivasulu Reddy Mogali Wai Yee Yeong Heang Kuan Joel Tan Gerald Jit Shen Tan Peter H. Abrahams Nabil Zary Naomi Low‐Beer Michael Alan Ferenczi 《Anatomical sciences education》2018,11(1):54-64
For centuries, cadaveric material has been the cornerstone of anatomical education. For reasons of changes in curriculum emphasis, cost, availability, expertise, and ethical concerns, several medical schools have replaced wet cadaveric specimens with plastinated prosections, plastic models, imaging, and digital models. Discussions about the qualities and limitations of these alternative teaching resources are on‐going. We hypothesize that three‐dimensional printed (3DP) models can replace or indeed enhance existing resources for anatomical education. A novel multi‐colored and multi‐material 3DP model of the upper limb was developed based on a plastinated upper limb prosection, capturing muscles, nerves, arteries and bones with a spatial resolution of ～1 mm. This study aims to examine the educational value of the 3DP model from the learner's point of view. Students (n = 15) compared the developed 3DP models with the plastinated prosections, and provided their views on their learning experience using 3DP models using a survey and focus group discussion. Anatomical features in 3DP models were rated as accurate by all students. Several positive aspects of 3DP models were highlighted, such as the color coding by tissue type, flexibility and that less care was needed in the handling and examination of the specimen than plastinated specimens which facilitated the appreciation of relations between the anatomical structures. However, students reported that anatomical features in 3DP models are less realistic compared to the plastinated specimens. Multi‐colored, multi‐material 3DP models are a valuable resource for anatomical education and an excellent adjunct to wet cadaveric or plastinated prosections. Anat Sci Educ 11: 54–64. © 2017 American Association of Anatomists. 相似文献