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008			250516t20252025my a|||fr|||| 000 0 eng d
020			_aTHE0010077 (Local) _qHardback
040			_aUMPSA _beng _cUMPSA _erda
090			_aFTKPM .S53 2025 r Thesis
100	0		_aShahandzir Baharom, _eauthor.
245	1	0	_aEvaluation of bio-based metal working fluid on cutting performance and chip formation processes / _cShahandzir Bin Baharom
264		1	_aKuantan, Pahang : _bUMPSA, _c2025
264		4	_c© 2025
300			_axvii, 142 pages : _billustrations (some color) ; _c30 cm. + _e1 CD-COM
336			_2rdacontent _atext
337			_2rdamedia _aunmediated
338			_2rdacarrier _avolume
347			_2rda _atext file _bPDF
500			_aFaculty of Manufacturing and Mechatronic Engineering Technology
502			_aThesis (Master of Science) -- Universiti Malaysia Pahang – 2025
504			_aIncludes bibliographical references
520	3		_aMetalworking 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.
610	2	0	_aFaculty of Manufacturing and Mechatronic Engineering Technology _xDissertations
650		0	_aUniversities and colleges _xDissertations
650		0	_aTheses _xDissertations
942			_2lcc _cTHESIS