ACKNOWLEDGEMENT

At first, all the praise to almighty Allah who gives us light of knowledge and giving us the opportunity to complete this thesis. The authors would like to express their deepest gratitude to the honorable supervisor Dr. Nirendra Nath Mustafi, Associate Professor & Head, Department of Mechanical Engineering, Rajshahi University of Engineering & Technology for his dynamic suggestion, strict guidance, constant encouragement and sincere advice in many ways throughout this thesis.

                The authors express their cordial thanks to Professor Dr. Md. Nurun Nabi, Dean, Department of Mechanical Engineering, RUET, and Professor Dr. Mohammad Rofiqul Islam for their valuable suggestion for improving the thesis work during seminar classes. Authors also express a special thanks to parents and well wishers who are taking a lot of pains for progress and for their sacrifices, blessing and constant prayers for advancement.

               Appreciations are also expressed towards the laboratory staffs of the Welding shop, Heat Engine Laboratory and Boiler shop of the Department of Mechanical Engineering for their co-operation.

Rajshahi University of Engineering& Technology,                                         Authors

Bangladesh.

October, 2012