全校師生：
我校定于2017年6月2日舉辦“動能名家講堂”——阿克倫大學者江教授學術報告會，現將有關事項通知如下：
1.報告會簡介
報告人：者江 教授
Speaker: Prof. Jiang Zhe
主持人：劉振俠 教授
Host: Prof. Zhenxia Liu
時間：2017年6月2日（星期五） 上午9:30-11:00
Time: 9:30am-11:00am, June 2, 2017
地點：長安校區動力與能源學院大樓225會議室
Place: Conference room 225, School of Power and Energy
主 題： 一種用于渦輪葉尖間隙在線檢測的感應傳感器
Topic: An Inductive Sensor for Online Monitoring Turbine Tip Clearance
內容簡介：
葉頂和機匣之間的間隙是影響葉輪機械性能、效率和壽命的重要因素。最小化的葉頂間隙減少了葉頂的空氣泄漏，導致更高的推力，更高的燃料效率和更少的排放。然而，由于不穩定的氣體壓力和溫度以及葉片本身的機械振動，特別是在氣體溫度和渦輪機轉速發生顯著變化的加速/減速期間，難以準確地估計動態葉頂間隙。另一方面，葉頂間隙的不精確測量可能引起葉片與機匣之間的摩擦和對渦輪發動機的致命損壞。
本報告介紹了一種穩定的電感葉頂間隙傳感器，能夠在高溫環境和高轉速下監測渦輪機的動態葉頂間隙。傳感器還可以自動感應葉尖處的溫度，從而可以估計和補償對葉頂間隙測量的溫度影響。
The clearance between blade tips and a turbine case is an essential factor for performance, efficiency and life-time of turbomachinery. Minimalized tip clearance reduces the air leakage over blade tips, leading to higher thrust, higher fuel efficiency and less emission. However, it is difficult to accurately estimate the dynamic tip clearance because of the unsteady gas pressure and temperature as well as the mechanical vibrations of the turbine itself, especially during acceleration/deceleration when gas temperature and turbine’s speed are changed dramatically. On the other hand, an inaccurate measurement of blade tip clearance may introduce rubbing between blade tips and a fatal damage to the turbine engine.
Here I report a robust inductive tip clearance sensor capable of monitoring dynamic tip clearances of turbine machines in high temperature environments and at high rotating speeds. The sensor can also self-sense the temperature at a blade tip in situ such that temperature effect on tip clearance measurement can be estimated and compensated.
2.歡迎各學院師生前來聽報告。報告會期間請關閉手機或將手機調至靜音模式。
動力與能源學院
2017年5月31日
報告人簡介
者江是俄亥俄州阿克倫大學機械工程系教授， 2002年哥倫比亞大學機械工程學院獲得博士學位，1996年獲得北京工業大學熱工工程碩士學位，1993年在西北工業大學獲得學士學位。加入阿克倫大學之前，他于2002年在菲特爾科技公司（菲特爾科技公司）和2003年的Advanced Microsensors（先進傳感器公司）擔任研發工程師。Zhe博士的主要研究領域是微納米傳感器，微流體裝置，芯片實驗室和智能感測材料和結構。他的研究得到美國國家科學基金，國防部，航空航天局和行業的資助，主持過10項美國國家科學基金項目。 2008年，他晉升為副教授，并于2012年分擔任全職教授。他發表過95篇同行審閱的文章和5項美國專利，獲得了2009年美國機械工程師學會“Lewis F. Moody”獎（利瓦伊思穆笛獎）和阿克倫大學工程學院2011年“杰出研究員獎”。2014年，他被選為ASME研究員。
Speaker’s Biography
Zhe Jiang is a Professor of Mechanical Engineering at The University of Akron, Ohio. He received his Ph.D. Degree in Mechanical Engineering from Columbia University in 2002, a Master Degree in Thermal Engineering from Beijing University of Technology in 1996, and a Bachelor degree in Power Engineering from Northwestern Polytechnic University in China in 1993. Prior to joining University of Akron, he was a research and development engineer in Fitel Technologies in 2002 and Advanced Microsensors in 2003. Dr. Zhe’s major research areas are micro and nano sensors, microfluidic devices, lab-on-a-chip devices and smart sensing materials and structures. His research has been well funded by NSF, DOD, NASA and industry. In particular, he has been Principle Investigators for 10 NSF projects. He was early promoted to associate professor in 2008 and to full professor in 2012 respectively. He is the author of 95 peer-reviewed articles, 5 US patents, and the recipients of American Society of Mechanical Engineers’ “Lewis F. Moody” Award in 2009 and University of Akron College of Engineering’s “Outstanding Researcher Award” in 2011. In 2014, he was elected to the Fellow of ASME.
