Shahandzir Baharom, <br/><br/>
Evaluation of bio-based metal working fluid on cutting performance and chip formation processes / 
Shahandzir Bin Baharom 
 - xvii, 142 pages :  illustrations (some color) ;  30 cm. +  1 CD-COM 
<br/><br/> Faculty of Manufacturing and Mechatronic Engineering Technology 
<br/><br/>Thesis (Master of Science) -- Universiti Malaysia Pahang – 2025 
<br/><br/>Includes bibliographical references 
<br/><br/> Metalworking fluids (MWFs) are crucial for cooling and lubricating metal workpieces,  enhancing quality by reducing heat and friction. However, conventional MWFs, usually  mineral oil-based, cause environmental pollution and health risks due to poor  biodegradability and high recycling costs. Researchers are exploring biodegradable  alternatives like vegetable based MWFs. Lubricant performance is evaluated using  methods such as chip formation analysis with a Quick Stop Device (QSD), which freezes  chips to assess their properties without alteration. Oblique cutting tests compare  lubricants for machinability performance. Experimental investigation using Bintangor  laut oil and synthetic ester, among others, during turning stainless steel AISI 316L,  demonstrates promising results. Minimum Quantity Lubrication (MQL) emerges as a  better alternative to flood coolant systems. Orthogonal cutting analysis reveals that  synthetic ester (SE) achieves the best performance in terms of cutting force (> 20%), chip  thickness (> 16%), and tool-chip contact length (> 26%) compared to dry cutting.  However, Refined Bleached and Deodorized Palm Olein (RBDPO) exhibits competitive  performance. In oblique cutting tests, bio-based lubricants demonstrate acceptable values  for cutting forces, chip thickness, and tool wear. Despite its good cutting performance,  RBDPO produces high roughness (> 60%) compared to SE on the workpiece surfaces.  The results highlight the potential of Crude Jatropha Oil (CJO) as a promising alternative  lubricant, with opportunities for further enhancement through chemical modifications  like esterification and additive enrichment to improve tribological and physical  properties. 
<br/><br/><label>ISBN: </label>THE0010077 (Local) 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Faculty of Manufacturing and Mechatronic Engineering Technology--Dissertations
<br/><br/><label>Subjects--Topical Terms: </label><br/>Universities and colleges--Dissertations<br/>Theses--Dissertations