000			03390ntm a2200361 i 4500
999			_c96737 _d96743
003			MY-KuUP
005			20251125110016.0
006			a||||fr|||| 000 0
008			220215s2020 my a|||fr|||| 000 0 eng d
020			_aTHE0009107(Local) _qhardback
040			_aUMP _beng _cUMP _erda
090			_aFTKPM .E34 2020 r Thesis
100	1		_aMohd Efendee Awang, _eauthor.
245	1	0	_aMagnetic polarity influence on machining performance of magnetic field-assisted edm / _cMohd Efendee Awang
264		1	_aKuantan, Pahang : _bUMP, _c2020
264		4	_c© 2020
300			_axiv, 97 pages : _billustrations (some color) ; _c30 cm. + _e1 CD ROM
336			_atext _2rdacontent
336			_atext _2rdacontent
337			_aunmediated _2rdamedia
337			_acomputer _2rdamedia
338			_avolume _2rdacarrier
338			_acomputer disc _2rdacarrier
347			_atext file _bPDF _2rda
500			_aFaculty of Manufacturing and Mechatronic Engineering Technology
502			_aThesis (Master of Science) -- Universiti Malaysia Pahang – 2020
504			_aIncludes bibliographical references
520	3		_aElectrical discharge machining (EDM) is one of the non-traditional machining techniques where it is commonly used in the mould and die making industry. However, the lengthy machining time in EDM process leads to low material removal rate (MRR). While increasing MRR by increasing peak current value, it affects the quality of surface finish. The EDM process offers a wide-range of machining parameters and hybrid EDM techniques can be manipulated in solving the EDM drawbacks. The present research aims to study the magnetic polarity influence on magnetic field-assisted EDM. In addition to MRR, electrode wear rate and surface roughness (Ra) of the sample illustrate the effectiveness of the EDM process. The installation of magnetic tools in the EDM machining area was implemented to study its improvements in EDM process. Moreover, the description of magnetic polarity impact in magnetic field-assisted EDM (MFAEDM) remains unacquainted. In the experiment, the EDM Charmiles Roboform22 utilized kerosene and cylindrical Ø25 mm graphite electrode to spark 2 mm depth of cut on AISI 420.mod tool steel. Peak current in the range of 8 A to 24 A and 50 µs to 100 µs of pulse time were designated along with 0.54 Tesla for both North-South (N-S) and North–North (N-N) polarity. The results show that MFAEDM technique enhanced MRR by 13% as compared to conventional EDM at 24 A and 100 µs. Surface roughness produced by MFAEDM was reduced by 16% and 20% respectively for peak current of 8 A and 24 A. N-S polarity combination improved Ra value as much as 10% for peak current of 8 A and 8% for 24 A as compared to N-N combination. The reason is the magnetic field squeezes and purifies spark-eroded process by trapping evaporated debris promptly onto the magnetic bar. MFAEDM causes removal of machining debris more efficiently and is able to attain high-efficiency of MRR. Thus, it improves surface finish quality to meet the demands of modern industrial application.
610	2	0	_aFaculty of Manufacturing and Mechatronic Engineering Technology _xDissertations
650		0	_aUniversities and colleges _xDissertations
650		0	_aTheses
942			_2lcc _cTHESIS