OPTIMISATION PARAMETERS OF ULTRASONIC-ASSISTED DRILLING FOR Ti-6AI-4V USING RESPONSE SURFACE METHODOLOGY - Amil Hamja Ali Hussin, author 393279; Shamsul Sarip, supervisor 277462; Mohd. Khairi Abu Husain, supervisor 543748; Fakulti Teknologi dan Informatik Razak 619091 (Johor Bahru, Johor : Universiti Teknologi Malaysia, 2023)