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2017-2018-1短学期全英文系列研讨课(Lecture on Laser Material Processing)组班通知
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我院拟于2017-2018-1学期(短学期)开设全英文seminar课程。符合选课条件并有兴趣的同学请进入吴健雄学院选课系统报名。

选课网址:https://cs.b00k.pw

选课时间:201762612:00721200

课程名称:Seminar1-Lecture on Laser Material Processing

课程教师:Prof. Dr. Harald Riegel

课程介绍:

Laser-Material-Processing (LMP) is an advanced production processing technology with a bright future. Laser cutting, laser welding and laser marking are wide spread technologies in industry. Many further laser based material processes like laser brazing, powder bed fusion (3D -Printing / Additive Manufacturing) or drilling are commonly used technologies. The big advantage of using the contact-less laser technology is a small heat affected zone at the work piece with high process speed and low distortion. No (or almost no) rework of processed parts even in optical critical areas are necessary. The future of laser material processing is characterized by many new advanced processes like polishing, special types of brazing or in-process-cleaning. The costs of lasers are decreasing dramatically offering savings or competition with currently more cost attractive industrial processes. New types of lasers for example ultra-short-pulsed laser or lasers with special wavelength offer new types of technologie. 

Content of class at Elite Undergraduate Program of Chien-Shiung Wu College (Honors)

The class consists of three blocks each block has a duration of four teaching hours (4 x 45 min = 180 minutes).

1st lecture: Introduction to Laser

In the first block the students understand the physical principles of LASER. They know the basic components of a laser sight source and the typical lasers used in mechanical and automotive industry. The students can distinguish the main operational modes like continuous wave (cw) or pulsed wave (pw).

2nd lecture: beam quality and propagation

Students are taught in the second lecture beam quality, beam propagation and beam guidance. They know how to calculate characteristic laser parameters and can cope with focal diameter, divergence, beam-parameter-product, beam caustic and Rayleigh length. Students will get basic physical equations and by doing exercises they will able to know the interdependence of the basic parameters. A brief look inside the intensity distribution of a laser beam will finish the second lectur.

3rd lecture Laser Material Processing

The students will understand the physical principles and the technical features of laser material processes, like brazing, cleaning, remelting, polishing, cutting, welding, drilling, structuring and marking

4th lecture (optional) Energy Absorption during cutting and welding

The students will understand that process efficiency is the key to predict suitable laser parameters for processes. Students will study examples in Laser cutting and Laser welding.

4th or 5th lecture Presentation

教师简介:170402_Harald-CV.PDF

课程性质:全英文工程系列研讨,1学分,总学时20

组班人数:30人,面向2014\2015学生。

上课安排:94/6/8/11/13日晚18:30-21:00上课。地点:教二202。

选课提示:

全英文系列研讨课为限选课程,吴健雄学院学生按要求在本科生期间至少选修一次,请各位同学合理安排时间修读。

170605_Harald-Lectures-on-Laser-material-processing.pdf


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