Ditemukan 3 dokumen yang sesuai dengan query
Lin Prasetyani
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ABSTRAK
Pada proses engraving penggunaan laser berdaya tinggi marak digunakan saat ini. Laser daya tinggi yang sering digunakan adalah laser gas seperti CO2, Nd:YaG dan laser diode. Laser diode memiliki beberapa kekurangan diantaranya sudut divergensi lebar, astigmatisme dan beam profile yang tidak ideal yang berbentuk elips. Kekurangan tersebut menyebabkan kualitas beam profile yang buruk. Oleh karena itu perlu dilakukan koreksi beam pada output diode untuk mengurangi rasio elips yang dimilikinya. Metode koreksi yang umum dilakukan adalah ...
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2017
T47744
UI - Tesis Membership Universitas Indonesia Library
M. Yunil
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ABSTRACT
A vacuum chamber has been designed and constructed for the observation the primary plasma and secondary plasma which is generated by the bombardments of brass by N2 Laser beam with about 5 ns pulse width and 1 1W power.
The Radius and spectral emission of the resulting secondary plasma of the brass sample at the surrounding gas pressure range 2 and 8 torr in N2, is presented.
This study can be developed to ...
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1988
T-Pdf
UI - Tesis Membership Universitas Indonesia Library
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This book mainly addresses the applications of lasers in the manufacture of various industrial components. The technologies presented here have scopes of application ranging from the macro to meso and micro level of components and features. This book includes chapters on the basic and advanced applications of lasers in the manufacturing domain. They present theoretical and practical aspects of laser technology for various applications such as laser-based machining, micro-scribing, texturing, machining of micro-sized channels; laser ...
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Singapore: Springer Singapore, 2019
e20501690
eBooks Universitas Indonesia Library
