Lateral torsional buckling of thin-walled rectangular and I-section laminated composite beams with arbitrary layups by Abdul Halim Halim B.S., Kabul University, Afghanistan, 2007 M.S., Kansas State University, 2010 AN ABSTRACT OF A DISSERTATION submitted in partial fulfillment of the requirements for the degree DOCTOR OF PHILOSOPHY Department of Civil Engineering Carl R. Ice College of Engineering KANSAS STATE UNIVERSITY Manhattan, Kansas 2020