Scholarships for Undergraduate, Postgraduate, & Postdoctoral
Promotor: Joost Duflou
Background: Large constructions, like open sea support structures for wind turbines, require the processing of ever thicker steel plates. Today high tech cutting capabilities, as offered by high power laser systems, are limited by the material behavior of thick plates under cutting conditions. Indeed, fine grained steels are typically cut with O2 as an assist gas, which induces extra energy into the process by means of the exothermic oxidation reaction between gas and material. This reaction needs to be controlled by means of the gas supply pressure, which limits the expulsion force that can be exerted on the cutting front. For thicker plates the capillary forces tend to exceed the expulsion forces. Conclusion is that the O2 supported laser cutting as used today is characterized by a poorly configured process design with insufficient degrees of freedom to effectively shift the process boundaries.
Research Objectives:
The process – material interaction can in our opinion be improved by process redesign measures that affect the melt pool force balance. Innovative ideas have been formulated for this purpose (confidential due to IP protection considerations) and will be investigated in the proposed research. Ideally this process redesign will allow shifting the process limits to considerably thicker plates (targets are plates of 30 mm and more).
This research will cover an experimental exploration of the proposed process redesign concepts and should lead to a profound understanding of the effects caused to the cutting front melt pool.
Available means: extensive experience with conventional, CO2 laser based sheet metal cutting and experimental manufacturing process development, support by a team of process engineers and material scientists investigating the material-process interaction in different laser based manufacturing processes, in-process optical monitoring system with IR camera, financial means to invest in an experimental setup, industrial partners contributing to the development of experimental systems, well-equipped metrology laboratory, extensive materials laboratory facilities.
Profile: Motivated PhD candidate holding a master in engineering degree, with strong affinity for experimental work on a CAD/CAM/CNC platform, solid capabilities for experimental design, data analysis and model extraction, and a strong interest in laser applications.
Contact: Prof. Joost Duflou, Joost.Duflou@mech.kuleuven.be, ++32/16/322845
Prof. Jean-Pierre Kruth, Jean-Pierre.Kruth@mech.kuleuven.be
Latest Application date: 2009-12-24
Financing: available
Type of Position: scholarship
Source of Funding: GOA project
Duration of the Project : 4 years
Research group: Department of Mechanical Engineering
Apply for this project here:
http://phd.kuleuven.be/apply/index.php?contact=u0016263&id=1478
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ALEM MEKOYA
July 19th, 2009 at 8:21 am
I am a gradute from Addis Ababa University with Bsc Mechanical Engineering and know wants to study Msc programs related to my field of study.
Thank You
Amjad Hussai
August 1st, 2009 at 11:07 pm
Dear Sir,
I hope that you will find this mail with the best of your health.
I am keenly interested to do Ph.D. in the field of laser material interaction. I have a lot of experience of research and development. Most of my work is related to laser material processing i.e., laser surface alloying, transformation hardening, cutting, welding, etc. I have also worked on LIPPA process and pulsed laser deposition with Nd-YAG laser. I have published a number of papers in international journals and conferences. My CV is attached herewith for your kind consideration.
Looking forward for your kind response
Amjad Hussain
CURRICULUM VITAE
Name Amjad Hussain
Language English, Urdu
Place & date of Birth Burewala: 21-03-1964
Address H. # 2-W, HOUSING SCHEME, BUREWALA,
PUNJAB, PAKISTAN
E-mail amjad_idb@yahoo.co.uk
Academic Qualifications
• M.Phil (Physics) 1992
Material Sciences, Laser Physics, Scattering Theory
Title of M.Phil Thesis: Rearrangement Collision of Zr(n,d)Y
• M.Sc. Physics, 1988
Extra Courses
• Production planning, scheduling and control
• One year diploma in English language from B.Z. University, Multan.
• Mathcade-7
Professional Experience
• 13 years ( 1996 up to now) at Pakistan Institute of Lasers and Optics, Rawalpindi, PAKISTAN
• One and half year (Jan. 2002 to June 2003) TECHNOMEN, Islamabad (Part time)
• One year (1994-1995) teaching at Islamabad Model College for Boys, F-7/3, Islamabad, PAKISTAN
• Three years ( from 1992 to 1995) as Research assistant , at Material Research Lab, Q.A.U. Islamabad, , PAKISTAN (Part time)
Presentations at Different Institute/University
1. “Tensile Strained Tapered (TST) Diode Laser”, COMSATS Institute of Technology, Islamabad, (2005).
2. “Industrial applications of Chemical Lasers”, TECHNOMEN, Islamabad, (2003).
3. “Effect of Short Range Order (SRO) on Electrical Resistivity of Alloys”, National University of Science and technology (NUST), Rawalpindi, (1995).
Specialized Field
Laser – Material Interactions, Laser Development and its Applications in Industries, Material Sciences
Leisure Interests
Cycling and hiking
List of Publications
1. A. Hussain, R.Akhter, W.A. Farooq, M.Aslam, “Laser surface alloying of Ni-Co electro-plated steel”, (ISAM-2009) 9th International Symposium on Advanced Materials, 8-12th August 2009 Islamabad, Pakistan
2. R.Akhter, A. Hussain, W.A. Farooq, M.Aslam, “Laser surface hardening of bearing steel”, (ISAM-2009) 9th International Symposium on Advanced Materials, 8-12th August 2009 Islamabad, Pakistan
3. A.Rauf, A. Hussain, R.Akhter, W.A. Farooq, M.Aslam “Role of combustion energy in laser cutting process of stainless steel”, (ISAM-2009) 9th International Symposium on Advanced Materials, 8-12th August 2009 Islamabad, Pakistan
4. M. Ashraf, A. Hussain, R.Akhter, W.A. Farooq, M.Aslam, “Mathematical modeling of laser transformation hardening of steel”, (ISAM-2009) 9th International Symposium on Advanced Materials, 8-12th August 2009 Islamabad, Pakistan
5. A.Rauf, A. Hussain, N. Akbar, R.Akhter, M..A. Malik,, and XIN Jian-guo, “Frequency modulation with triangular pulse of RF-excited slab wave guide CO2 laser” Submitted (2009)
6. A.Hussain, I. Ahmed, A.H. Hamdani, A. Naussar & S. Shahdin, “ Laser surface alloying of Ni-plated steel”, Applied Surface Science Vol. 253 (11), pp. 4947-4950 (2007)
7. K.A. Quarshi, N. Hussain, J.I. Akhter, N. Khan & A.Hussain, “Surface modification of low alloy steel by laser melting” , Material Letters Vol. 59, pp.719-722 (2005)
8. A.Hussain, R.Akhter, S.Shahdin & M.A.Atta “Surface Hardening of steel with low power lasers” SPIE Vol. 4397, pp 329-332 (2001).
9. Saifuddin, F. Beg & A.Hussain, “Multiparticle Rearrangement Collisions”, IL NOUVO CIMENTO Vol. 107B (9), pp 938-986. (1992)
10. R. Akhter, I. Ahmed, A. Hussain, A. Naussar & S. Shahdin l., “ Laser welding of Zinc coated sheets” Conf. Proc. 9th International Symposium on Advanced Materials, 23-25th September 2005 Islamabad, Pakistan,
11. A.Hussain, R.Akhter, S.Shahdin & M.A.Atta “A New approach of Modeling of transformation Hardening of steel by laser beam” Conf. Proc. ISAM-2001, 7th International Symposium on Advanced Materials, 21-25th September 2001 Islamabad, Pakistan. Pp. 508-513 (2002).
12. A.Hussain, R.Akhter S.Shahdin & M.A.Atta, “Transformation Hardening of Steel by Laser beam”, Conf. Proceedings of the 6th International symposium on Advanced Materials, 21-25th September 1999, PAKISTAN. Edited by Dr. M.A. Khan, Dr. Anwar ul Haq et al., Pp. 761-766 (2000).
13. A.Hussain, R.Akhter, S.Shahdin & M.A.Atta, “Mathematical Modeling of Laser Based Cutting Process using CO2 Laser”, Conf. Proc. of Mathematical Models: Their Development and Use, 20-21st July 1998, Islamabad, PAKISTAN. Pp. 120-126 (1999).
14. A.Hussain, F.A. Khawaja & Fasial Ch. “The Temperature Dependent Electrical Resistivity of Ni- Fe-Cr Alloy”, Conf. Proc. 5th International symposium on Advanced Materials, 21-25th September 1997, Islamabad, PAKISTAN,. Edited by Dr. Anwar ul Haq and M.A. Khan pp. 267-271 (1998).
15. A.Hussain, A. Rauf, R.Akhter, S.Shahdin & M.A.Atta “Cutting with Low Power CO2 Lasers — Preliminary Results”, Conf. Proc. 6th National Frontier in Physics, 16-17 December 1997, Quaid-I-Azam University, Islamabad, PAKISTAN”,. Edited by Prof. Dr. Aslam Beg et al., pp. 61-67 (1998).
16. F.A. Khawja, A. Hussain “Residual Electrical Resistivity of Binary Alloys in Pseudopotential Approximation”, Conf. Proc., the 3rd International symposium on Advanced Materials, 20-24th September 1993, Islamabad, PAKISTAN, Edited by Dr. Anwar ul Haq et al., pp. 714-720 (1994).
Work in Progress
1. Laser surface alloying of Ni-Co and Ni-Co & Cr plated steel
2. Special designing of nozzle for laser cutting with Copper mirror. Successful laser cutting experiments are carried out with reflected focusing copper mirror
3. Laser welding of dissimilar metals (Stainless steel & Aluminum alloys, Titanium & SS and other commercial materials)
CAREER PLAN
Laser is found a stimulating and rewarding area to work in, because it spans across all sciences and engineering fields particular in industries due to its versatile nature of applications, i.e. from material processing in industries to medicine for detection of cancer. My interest is to find new applications of this field, which would be cost effective and useful for human being.
I believe I could make a very worthwhile contribution to this field as a result of the excellent experience that I have gained during my last ten years. It has paved my way to be a confident and effective teacher/researcher. . I am very serious and ambitious person, and seeking some research oriented job in the field of lasers. Please consider my CV for favourable response
REFERENCES
Dr. W. Aslam Farooq
Pakistan Institute of Lasers & Optics, Rawalpindi (PAKISTAN).
E-mail: wafarooq@hotmail.com
Chief Scientist Dr. J.I. Akhter,
Pakistan Institute of Nuclear Science and Technology, Nilore, Islamabad (PAKISTAN).
E-mail: jiakhter@yahoo.com
Prof. Dr. M. Aslam Baig
Department of Physics, Quaid-I-Azam Uinversity, Islamabad (PAKISTAN)
Dr. Abdul Rauf
Pakistan Institute of Lasers & Optics, Rawalpindi (PAKISTAN).
E-mail: abdulrauf313@yahoo.com
Brief Report
After completing my M.Phil in Physics, I joined as research assistant at material research lab, Quaid-I-Azam University, Islamabad. Four-probe technique to measure the residual electrical resistivity of alloys and superconductors was developed. It is being used to measure the electrical resistivity from liquid nitrogen to at room and higher temperature also. Pseudopotential theory of alloys was applied to predict the resistivity by introducing the SRO, thermal effects and lattice distortion effects. Comparisons between theoretical and experimental results were carried out and results were presented in a conference.
In March 1996, I joined as a research fellow at Pakistan Institute of Lasers and Optics, Rawalpindi. I took active part in the development of slow flow U-fold 400 watt CO2 laser systems. Calculations were carried out to optimize the out put power of this laser. Now 400watts laser system is being successfully used for material processing.
In metal cutting, oxygen is used as an assist gas with laser. The contribution by laser as well as exothermic reaction (contributed by oxygen) during this process was calculated separately by using Hse and Molian model and the results were presented in different conferences.
Surface modification of steel has been carried out with low power CO2 laser. The laser treated surface was analyzed and corresponding changes in microstructure and hardness were studied. An excellent agreement between observed and published results was found. Ashby’s model for transformation hardening of steel was used to calculate the depth of hardness, value of hardness and hardened profile. Mathcad-7 was used to predict required power, speed and depth of hardness for particular steel. A comparison between experimental and theoretical results of different carbon steels was made. A new approach for mathematical modeling of hardening of steels was also proposed and the results were presented in the ISAM-2001.
Low alloy and low carbon steel were electroplated with Ni, Ni & Cr , Ni-Co and Ni-Co & Cr of various thickness and then melted with CO2 laser at different speeds and powers. The newly formed alloys were analyzed & characterized and the results were published in international journals. Laser welding of dissimilar metals like stainless steel and aluminum is in progress. A lot of potential exists in these fields for international publications due to their direct applications in the industry.
The Institute is also acting as a job shop and catering for the requirement of the local industries. I am also running a 2.5 kW and 400 W CO2 laser workstations these are being used for variety of jobs that includes welding, cutting, drilling, surface treatment etc. The BOBCAD software is being used for cutting of simple or intricate patterns. The institute is actively involved in marketing the industrial laser systems particular for cutting and marking of surgical instruments.
Amjad Hussai
August 1st, 2009 at 11:13 pm
I am working in the field of laser material processing from last 13 years. I am kneely interested to do Ph.D. in this field. My CV provides detailed informations about my interest. I think that this project is very close to my interest.
With best regards
Amjad Hussain
Amjad Hussai
August 1st, 2009 at 11:17 pm
The top is very interesting and innovative due to its direct application in industries.
ASmelash Gebrehiwot
November 13th, 2009 at 1:13 am
I am graduate from mekelle University with Bsc Mechanical Engineering and know wants to study Msc/phd programs related to my field of study. Especially; I am wholeheartedly interested to do Ph.D. in the field of laser material interaction.
Thank You
Mohammadreza Faghedi
January 20th, 2010 at 5:30 am
DEAR SIR
Kindly be informed that I am MsC graduated having education resume as bellow:
-BS degree in metallurgy and material science – Sharif University of Technology-Tehran-Iran 1988-1992)
BS thesis: Super plasticity in tools steels.
2- -MS Degree in material science – Tehran Polytechnic University-Tehran-Iran (1993-1996)
MS Thesis: Effect of heat treatment&grain size on formability of Alluminum alloys
(Top student of department by average 17.56 OF 20)
-Welding Engineer (IIW, EWE, DVS FROM SLV (Welding Research Institute of Germany) Duisburg-Germany (1999)
- PMP certified (Project Management Professional)
- RTI (II) &UT (II)
- Assistant of Mechanical Metallurgy in the Faculty
- Teaching a lot of courses in the fields of: welding design, fabrication, welding processe, material, and repair welding.
It is nice of you to demand other required information (if any).
Hereby I request to apply for mentioned PhD project as studentship.
Waiting for your kind reply I remain.
Truly Yours
M.R. Faghedi