Alhamdullah! All praise and thanks are due to Allah, the Most Beneficent, the Most Merciful.

I owe sincere thanks to Dr. J. Rajesh Banu sir, my research supervisor and mentor, whose constant guidance opened the door to the world of research and shaped my scholarly path. His support has been foundational throughout my career. I extend my sincere thanks to Dr. S. Adish Kumar sir, my PhD supervisor, for his encouragement, thoughtful insights, and steadfast support at every stage.

I am also thankful to Dr. S. Kavitha and my dear friend Dr. Yukesh Kannah Ravi for their invaluable help, consistent support, and contributions to my research and career development. My heartfelt thanks to Dr. J. Thirumal sir, my M.E. project supervisor, for his early mentorship and motivation, which laid the foundation for my research orientation.

I thank PET Engineering College and my department colleagues for their invaluable support throughout this journey.

Finally, I remain forever indebted to my parents, T.A. Mohamed Ibrahim and S.M. Mariyam Fathima, whose dreams and prayers nurtured my pursuit of knowledge. My heartfelt thanks to my wife, K.M. Aafrin Asma, and all my family members for their unconditional support and encouragement throughout this career.

— Dr. Mohamed Usman T M