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020 _aTHE0008953(Local)
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040 _aUMP
_beng
_cUMP
_erda
090 _aFTKMA .N39 2020 r Thesis
100 0 _aMohamad Nazirul Mubin Merzuki,
_eauthor.
245 1 0 _aInvestigation on mechanical and modal properties of aluminium based fibre metal laminates /
_cMohamad Nazirul Mubin Merzuki
264 1 _aKuantan, Pahang :
_bUMP,
_c2020
264 4 _c© 2020
300 _axiii, 88 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 Mechanical and Automotive Engineering Technology
502 _aThesis (Master of Science) -- Universiti Malaysia Pahang – 2020
504 _aIncludes bibliographical references
520 3 _aThe combination of materials between metal alloys and composite materials has been used for thousands of years to reach better performance requirement. To achieve the best combination of material properties and service performance, a study on the dynamic behaviour is one of the main points to be considered. Besides, it is important to investigate the natural frequency and the possible mode shape of the selected of the materials to avoid problems related to vibrations. This master project was aimed to investigate the mechanical properties of aluminium alloys and composite materials. At the same time, the dynamic behaviour of combination between aluminium alloys (Al 2024-T0) and three different composite materials (CFRP, GFRP, UD-CFP) by free vibration test also evaluated. Compression moulding technique was used to fabricate the fibre metal laminate (FML) plates. The fabrication method was according to ASTM D3039 standard and mechanical properties of the plate were determined from the tensile test method. Variation of natural frequency and mode shape of FML based on the aluminium alloys (Al 2024-T0) and three different composite materials were evaluated through different configuration lay-up of 2/1 and 3/2 stacking sequences with multiple boundary conditions. Based on E756 standard, modal testing using impact hammer with roving accelerometer method was carried on to the specimens. Finite element analysis (FEA) models by using commercial ABAQUS software was used to determine natural frequency and mode shape. The experimental results from modal testing were then compared with the FEA values. It was found that, the natural frequency of the FMLs plates increased when more Al layers were embedded in the composite layers. The results reveal that a percentage increase in natural frequency from 29.41 % to 71.98 %. Meanwhile, the percentage increment in natural frequency was from 54.36 % to 88.53 % between fixedfree and fixed-fixed boundary conditions. The vibration analysis of FML plates were validated, where the percentage error between numerical analysis and experimental results are observed to be 0.08 % to 16.17 %. In conclusion, with the presence of aluminium alloy plates in the composite layers, the natural frequency will increase as the value of stiffness increase. The boundary conditions significantly affected the natural frequency of FML plates because of the restraint effect at the edges.
610 2 0 _aFaculty of Mechanical and Automotive Engineering Technology
_xDissertations
650 0 _aUniversities and colleges
_xDissertations
650 0 _aTheses
942 _2lcc
_cTHESIS