000			04753nam a2200349 i 4500
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003			MY-KuUP
005			20251125105951.0
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007			ta
008			220405t20212021my a|||fram|| 001 0 eng d
020			_aTHE0009277(Local)
040			_aUMP _beng _cUMP _erda
090			_aFTKMA .M39 2021 r Thesis
100	0		_aMawarnie Ismail, _eauthor.
245	1	0	_aMechanical properties and fracture behavior of natural fiber-glass fiber reinforced epoxy matrix hybrid composites / _cMawarnie Ismail
264		1	_aKuantan, Pahang : _bUMP, _c2021
264		4	_a© 2021
300			_axv, 133 pages : _billustrations (some color) ; _c30 cm. + _e1 CD-ROM
336			_atext _2rdacontent
337			_aunmediated _2rdamedia
338			_avolume _2rdacarrier
347			_atext file _bPDF _2rda
500			_aFaculty of Mechanical and Automotive Engineering Technology
502			_aThesis (Master of Science) -- Universiti Malaysia Pahang – 2021
504			_aIncludes bibliographical references
520	3		_aThe world today is experiencing a significant global warming problem. One of the reasons for this problem is the use of unlimited synthetic and polymer materials. Many industries have used this natural fiber reinforced polymer composite, including in the furniture, automotive, aerospace, and shipping industries. However, the main weakness of this composite is the lack of mechanical properties, such as strength, compared to synthetic fiber composites applied in many products. Therefore, it is believed that the composite manufacturing method through the hybridization of natural fibers with synthetic fibers compensates for their respective advantages and disadvantages. Natural fibers have excellent mechanical properties but are unable to compete with synthetic fibers. Meanwhile, synthetic fibers are expensive and non-disposable, and have high density. Synthetic fibers are different from natural fibers that have lower density, low cost, and biodegradable. The main aim of this study was to determine the effect of hybridization on the mechanical properties of natural-glass fiber reinforced epoxy matrix hybrid composites. The fractured samples from the tensile test were observed using scanning electron microscopy (SEM) for morphological analysis. This study was chosen due to the fewer findings of this hybrid composite, mainly studies using pineapple leaf fiber (PALF) and rice husk (RH) fiber as natural fibers although these fibers are waste materials with a high content of hemicellulose and cellulose. The fabrication process of this hybrid composite started with the grinding of natural fibers to obtain short fibers, followed by the subsequent separation of fibers, drying, and formation of the hybrid composites. The composition of the fiber and epoxy matrix was based on weight distribution, where 30 wt. % was from the combination of natural and glass fibers, and the remaining 70 wt. % was the epoxy matrix. The fraction of glass fiber ranged from 25 wt. % to 5 wt. %, and vice versa for natural fibers, and the bi-directional type of glass fiber was used in this study. The lamination for all the fibers alternated with the beginning of the glass fiber from the bottom. The epoxy absorption process adopted the hand lay-up method whereas the curing process applied the cold compression method. After conducting a series of tensile, flexural, and impact tests, the results showed that the highest strength of RH and PALF hybrid composite was similar to 30 wt. % of glass fiber with a difference of less than 10%, and achieved even higher modulus than the glass fiber composite solely. Overall, the hybrid composite with weight distribution of 25 wt. % of glass fiber and 5 wt. % of natural fiber, either PALF or RH, showed the highest strength for tension, bending, and impact tests due to the weight of glass fiber and excellent interfacial bonding between fibers and epoxy. The values obtained by the PALF-glass fiber hybrid composite were 223.58 MPa for tensile strength, 290.11 MPa for bending, and 469.52 J/m for impact. The values for RH-glass fiber hybrid composite for tensile test were215MPa, 275.51MPa for flexural and 447 J/m for impact strength. However, the internal structure after fractured showed more voids and fiber pull-out when the natural fiber increased. Therefore, this study shows that the hybrid composites between PALF and RH fibers with glass fibers have great potential to be used in place of existing synthetic fiber composites in the industry.
610	2	0	_aFaculty of Mechanical and Automotive Engineering Technology _xDissertations
650		0	_aUniversities and colleges _xDissertations
650		0	_aTheses
942			_2lcc _cTHESIS