English | NanjingTech | Contact
专题讲座    
  科研信息   
  院务公告   
  学生事务   
  专题讲座   
  学术会议   
  IAM星火大讲堂   

当前位置: 网站首页 通知公告 专题讲座 正文
约翰内斯堡大学任天健教授学术报告
 添加时间:2015/12/08 发布: 管理员
二维码

扫描二维码,在手机中查看。

报告时间:2015年12月10日(周四)上午10:00

报告地点:科技创新大楼C501室

报告题目: Cold Gas Dynamic Spraying for micro and nano-size particles and its applications

 

 

 

TIEN-CHIEN JEN(任天健)

ASME Fellow

Professor, Mechanical Engineering Science

University of Johannesburg, South Africa

Tel: US: 414-336-0378

South Africa: +27 11 5594208

Email: tienchienjen@gmail.com

tjen@uj.ca.za

谷歌 Scholar: https://scholar.google.co.za/citations?hl=en&user=Q-vedboAAAAJ

 

Abstract

 

The Cold Gas Dynamics Spraying (CGDS) deposition process is an emerging technology for coating surfaces and consolidation of powder. The process is based on the impact on and the subsequent adherence to a substrate of particles of high kinetic energy. Current CGDS involves injecting microscopic powdered particles of a metal or another solid into a supersonic jet of rapidly expanding gas and then shooting them at a target surface. The process is performed in order to directly bond powder with the substrate through high-speed impact.In contrast to well-known thermal spray processes, the cold spray particles (metals, polymers) never become melted throughout the whole process. Low deposition temperatures offer several advantages over other thermal spraying and plasma spray particles techniques, including no phase transformations, little or no oxidation, no evaporation, no substrate melting and no recrystallization. In addition, the residual stresses and deformation induced by the mismatch between the thermal expansion coefficients of the coating and the substrate are minimized. Furthermore, the process is inherently safer than thermal spray methods because there are no molten materials. The CGDS coating process requires less capital investment and less space than conventional thermal spray methods. The powders (fall off from the substrate) can even be recycled to improve the economics of the process. 

 

Biography

 

Education

 

Jan. 1988 – March 1993   Ph.D., Mechanical and Aerospace Engineering, University of California, Los Angeles         

Sept. 1985 – June 1987     M.S., Power Mechanical Engineering, National Tsing-Hua University, Hsinchu, Taiwan    

Sept. 1978 – June 1982    B.S., Naval Architecture and Marine Engineering, National Cheng-Kung University, Tainan, Taiwan

 

Positions Held

 

July 2015 – present            Professor, Department of Mechanical Engineering Science, University of Johannesburg, South Africa

August 2013 – June 2015  Adjunct Professor, University of Wisconsin, Milwaukee

May 2013 – May 2014      Dean, College of Engineering, UAA

Oct. 2010 – Sep 2012        Interim Dean, College of Engineering and Applied Science, UWM

July 2008 – May 2013       Professor, University of Wisconsin, Milwaukee

July 2005 – June 2010       Chairman, Mechanical Engineering Department

Aug. 2001 – June 2008      Associate Professor, University of Wisconsin, Milwaukee

Aug. 1997 – July 2001      Assistant Professor, University of Wisconsin, Milwaukee

Aug. 1996 – Aug. 1997     Visiting Assistant Professor, Oakland University, Rochester, Michigan

Apr. 1993 – July 1996    Assistant Research Engineer, General Motors and Mechanical and Aerospace Engineering, University of California, Los Angeles

Jan. 1988 – March 1993    Research Assistant, University of California, Los Angeles

Sept. 1985 – June 1987     Research Assistant, National Tsing-Hua University, Hsin-chu, Taiwan

 

Publications

 

Professor Jen has written a total of 173 peer-reviewed papers including 80 peer-reviewed journal papers, published in many prestigious journals including International Journal of Heat and Mass Transfer, ASME Journal of Heat Transfer, ASME Journal of Mechanical Design and ASME Journal of Manufacturing Science and Engineering.  He also has written five chapter papers including a chapter in Numerical Simulation Proton Exchange Membrane Fuel Cell, published by WIT Press, and another chapter in Application of Lattice Boltzmann Method in Fluid Flow and Heat Transfer in Computational Fluid Dynamics – Technology and Application, and more.

 

 

Patents

 

Professor Jen has applied for two Chinese patents (2013104728193 and 2013104728371 ), and other two inventions that have been revealed TTO (Technology Transfer Office, University of Johannesburg) are pending (2015).

 

Special Honors and Awards

 

Elected to the status of American Society of Mechanical Engineer Fellow in recognizing the contribution to Mechanical Engineering, October 2011

 

Appointed as Guest Professor of Chongqing University, China, in recognition of significant research achievement, October 2009

 

Appointed as Guest Professor of Anhui Agriculture University, China, in recognition of significant research achievement, October 2009

 

Appointed as Guest Professor of Shangdong University, China, in recognition of significant research achievement, October 2010

 

CEAS Million Dollars Research Funding Club, in recognition of significant funding received, September 2008

 

Graduate School/UWM Foundation Outstanding Research Award, in recognition of Outstanding and Creative Activity, November 2000

 

NSF GOALI Award, the first award of its kind ever awarded to UWM by NSF, 1999 – 2006

 

Outstanding Research Award, CEAS, UWM, 2001

 

SME Research Initiation Award, SME Education Foundation, 1998 – 1999

 

SME Research Initiation Award, SME Education Foundation, 1997 – 1998

 

Best Paper Award, CIRP Annals, titled “Thermal Aspects of Grinding with CBN Wheels,” CIRP Annals, Vol. 38, No. 1, pp.557 – 560

 

Listed in Marquis Who’s Who in Science and Engineering (1994 – to date)

 

Listed in Marquis Who’s Who in the World (1994 – to date)

 

Listed in Marquis Who’s Who in America (1995 – to date)

 

Listed in Lexington Who’s Who (1999 – to date)

 


Copyright ? 2017-2019 三昇体育平台_三昇体育(唯一)官网 All rights reserved.

官方微信
地址:南京市新模范马路5号138信箱 总共访问:   [旧版回顾]
电话: 025-83587982 邮件:iam@njtech.edu.cn
 
XML 地图 | Sitemap 地图