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A Student from Applied Science Department gain a master degree about the use of nano laser pulses in some industrial applications |
A Student from Applied Science Department gain a master degree about the use of nano laser pulses in some industrial applications
The Committee discussion includes:
- Prof.Dr. Raed Abdul-Wahab Ismail from the Applied Science Department at the University of Technology (the head)
-assist.Prof.Dr. Abdul Kadhim from Laser and Optics Engineering Department of at the University of Technology
- assist.Prof.Dr. Hamad Rahim Hammoud from Physics Department of Science College at Baghdad University
-Prof. Dr. Walid Khalaf Hammoudi of Applied Science Department at the University of technology (supervisor)
- assist.Prof.Dr. Zainab Fadhil Mahdi (scientific expert)
- Dihia Nuri al-Raouf (linguist expert)
It has been used in this research ND-YAG Laser pulse of 1064 nm wavelength and long pulse 9 nanoseconds in some mineral applications perforation, welding and Foundries. The basic aim from the use of these short pulses of metal applications is shorten of time interaction between the laser beam and the material and resulting in inventory heat in a very small spot and keep the rest of the areas unaffected by the heat, and it is a very important feature in sensitive electronic equipment and volt devices where the leaking heat to the rest of the machine parts that could lead to its damage. The basic metals used in this research are copper and aluminum which possess different thermal properties. in perforation application and then used different values of laser energies and number of pulses, and it has been getting deep into the hole 74 Micro meter of aluminum when energy 140 mil Gul while copper, which melting point higher than the aluminum component was a hole depth of 25 Micro meter at the energy of 200 mil Gul of welding application ,and then used 96 laser pulse strongly 13.46 x 108 W / cm2 to weld samples of copper, and to weld two samples of copper-aluminum has been used 40 laser pulse and the same intensity value used for welding two copper pieces. Then measure the surface hardness for the application of welding and observed an increase in the hardness of both metals than the original hardness of them.
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