颜永年
多功能快速成形制造系统、组织工程材料的大段骨快速成形制造
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- 姓名:颜永年
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学术头衔:
博士生导师
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学科领域:
水文学
- 研究兴趣:多功能快速成形制造系统、组织工程材料的大段骨快速成形制造
颜永年,男,1956年毕业于苏州市第二中学,1962.1 毕业于清华大学机械工程系, 1987.1—1988.10 美国加州大学洛杉矶分校(UCLA)访问学者。 1962.1毕业留校在清华大学机械工程系工作至今。1989年提为教授,1992~至今任清华大学激光快速成形中心(CLRF)主任,2000~2003任清华大学机械工程系材料加工工程及自动化研究所所长,2003~至今任清华大学生命科学及医学研究院生物制造工程研究所所长。主要社会兼职:中国机械工程学会理事、特种加工分会常务理事、快速成形委员会主任,快速原型协会国际联盟(GARPA)委员、(中国唯一代表),“Journal of Eng. Manufacturing”(SCI原刊)和“Rapid Prototyping Journal” (SCI原刊) 编委,《机械工程学报》、《机械与电子》、《模具技术》编委。 承担并完成了多项国家自然科学重点基金、国家863计划及与企业的横向合作任务。在多功能快速成形制造系统、组织工程材料的大段骨快速成形制造等方面取得了国际领先水平的科研成果。获国家科技进步二、三等奖3项,省、部级奖5项,拥有发明专利5项、实用新型专利16项,著、译书12册,发表论文263篇、其中SCI收录20篇、EI收录33篇,几年来培养博士生32名、硕士生31名。
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颜永年, Yan Yongnian, WuRendong, Guo Yonghong
机械工程学报,2003,39(11):104~107,-0001,():
-1年11月30日
如何制造大型原型零件是目前快速成形技术(RP)研究的热点之一。分层实体制造工艺(LOM)在直接制造大型原型方面具有独特的优势。造型周期长是制造大型原型的困难之一,针对LOM工艺提出了动态分区并行扫描成形的方法。分析和试验结果表明,采用该方法可以有效提高成形效率,是实现直接制造大型原型的可行途径之一。
快速成形技术, 分层实体制造技术, 动态分区扫描
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【期刊论文】Biomaterial forming research using RP technology
颜永年, Yongnian, Yan Rendong, Renji Zhang, Zhuo Xiong and Feng Lin
Rapid Protyping Journal Volume 9. Number 3. 2003. 142-149,-0001,():
-1年11月30日
This paper introduces a new subject called bio-manufacturing. Bio-manufacturing comoines life science with manufacturing science, and uses manufacturing method to form materials with bio-activib/and bio- degradability into scaffolds. In this paper, we discuss the hierarchy of bio-manufacturing: the lower grade uses undegradabte bio-material to form permanent organ replacement such as auricular cartilage and the higher grade uses biodegradable bio-materials to repair organ damage or organ replacement which degrades after embedded in the human body. They all adopt jetting/extrusion deposition process (fused deposition modelling or 3D printer), the distinct different point being the temperature of the forming chamber. The samples of bones and auricular cartilage produced by those processes had been practiced on dogs and rabbits, repaired their damage.
Rapid prototyping, Biotechnotogy, Manufacturing
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【期刊论文】Rapid Tooling Using Plasma Spraying & Rapid Prototyping
颜永年, Yongnian, Yan Zhongde, Shan Renji, Zhang Feng Qi
,-0001,():
-1年11月30日
The race to fabricate a product to market increases in speed, cost and quality, the drive for tooling lead times to decrease with low cost becomes more important. Rapid Tooling (RT) fabricated in Tsinghua university, uses metal plasma spraying process and rapid prototyping (RP) to form a metal tool. The process uses plasma spraying as the heat pool to melt metal powder and then deposit molten metal onto the substrate made from RP. It provides a quick, accurate, sample and relatively cost effective route for producing metal parts or tools, especially for large tools. The process and key technologies are analyzed and described in detail. Applications illustrate that the total costs for new products can be reduced by as much as 40~60% and lead times can be reduced 50~60%.
Rapid Prototyping, Rapid Tooling, Plasma Spraying, Metal, Deposition Forming
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颜永年, CHEN Lifeng, YAN Yongnian
中国机械工程,2003,14(1):1~4,-0001,():
-1年11月30日
功能结构器件的加工过程要求实现多种材料组分的梯度分布和内部微结构的构造。通用的自顶而下、整体控制局部的制造方法有着很大的局限性。快速成形技术提出了离散-堆积的降维制造思想,在直写技术的辅助下,可以通过对材料的微单元操作,实现功能结构器件的堆积制造。
快速成形, 直写, M EM S, 组织工程, 功能梯度材料
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【期刊论文】Effects of convection in laser-guided transportation
颜永年, L Chen*, Y Yan and R Zhang
Proc. Instn Mech. Engrs Vol. 218 Part C: J. Mechanical Engineering Science,-0001,():
-1年11月30日
Weak focused laser beams can guide micrometre-sized beads to direct-write twodimensional patterns or three-dimensional structures. Applications based on laser guidance have been found in many fields including biological research areas. This paper discusses the effects of convection, which is the main disturbance during laser-guided transportation. The heat generated by optical absorption causes the convection flow, as observed in experiments. To investigate this convection flow, a finite element analysis (FEA) model was set up and computation under different heat load conditions was carried out. The results show that the convection flow velocity at the laser beam centre has a direct proportional relation to the incident power and varies with the position of the laser beam.
laser guided transportation, convection, heat generation, finite element analysis (, FEA),
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颜永年, Wu Rendong, Yan Yongnian, Liu Wei
,-0001,():
-1年11月30日
从信号处理角度来考察快速成形技术的成形过程,可以将快速成形设备理解为滤波器,在此基础上建立起一组滤波方程来表征快速成形工艺的成形过程。针对目前快速成形分层制造的特点,利用Haar小波函数间断性的特点,建立了基于小波分析的快速成形的数学模型。
快速成形, 小波分析, 傅立叶分析, 数学模型
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颜永年, Yuhua Song*, Yongnian Yan, Renji Zhang, Da Xu, Feng Wang
Y. Song et al./Journal of Materials Processing Technology 120(2002)237-242,-0001,():
-1年11月30日
To produce the metal die of an automobile deck part of high quality at low cost with a short cycle, a new method of manufacturing the die, based on rapid prototyping and rapid tooling, is proposed in tbis paper. First, the technological process of rapid processing (RP) technology and the large scale rapid processing and manfacture (RP&M) eqdipment SSM 1600 that is based on the innovative idea of concunent processing in a divided field are introducedi The SSM 1600 eqdipment supplies a gap in the field of making large prototypes. The technology of the unbaked ceramic mold casting process based on RP technology is also introducedi The method of 3D non linear coupled thermo mechanical FEM analysis is adopted to analyze the dimensional accuracy of the die of an automobile deck part during the casting solidification process. The simolation result can be used to modify the CAD modal to furtber improve the precision of the die. The system of manufacturing the die of an automobile deck part based on rapid prototyping has gained success by the verification of practical production.
Rapid protolyping, Rapid tooling, Die of automobile deck, 3D non-linear FEM anlysis, Precision casting
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颜永年, Zhuo Xionga*, Yongnian Yana, Renji Zhanga, and Lei Sunb
Scripta Materialia 45(2001)773-779,-0001,():
-1年11月30日
The new technology of precise extrusion manufacturing (PEM) based on the layer-by-layer manufac-turing principle was proposed to fabricate porous poly (L-lactic acid) scaffolds for bone tissue engineering. The PEM system and the shaping process were analyzed. The manufactured scaffolds were evaluated as potential tissue regeneration scaffolds for bone tissue engineering.
Rapid prototyping, Extrusion, Bone tissue engineering, Poly (, L-lactic acid), , Porous scaffold
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