• Course Code Course Code : : EBB 324 EBB 324 • Course Title Course Title : : Advanced Materials Advanced Materials and and Composites Composites • Course Unit Course Unit : : 4 4 • Type of Course Type of Course : : Core Core • Name of academics Name of academics : : Dr. Mariatti Jaafar Dr. Mariatti Jaafar • Dr. Hazizan Md Akil Dr. Hazizan Md Akil • Dr. Zuhailawati Hussin Dr. Zuhailawati Hussin • (6) Contribution of Assessment: (6) Contribution of Assessment: 70% 70% final examination & 30% course work (15% final examination & 30% course work (15% Test and 15% Quiz/PBL) Test and 15% Quiz/PBL)
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Course Code:EBB 324 Course Code:EBB 324 Course Title:Advanced Materials and Composites Course Title:Advanced Materials and Composites Course Unit:4 Course.
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and Compositesand Composites• Course UnitCourse Unit :: 44• Type of CourseType of Course :: CoreCore• Name of academicsName of academics ::Dr. Mariatti JaafarDr. Mariatti Jaafar• Dr. Hazizan Md AkilDr. Hazizan Md Akil• Dr. Zuhailawati Dr. Zuhailawati
HussinHussin• (6) Contribution of Assessment:(6) Contribution of Assessment:70% final 70% final
examination & 30% course work (15% Test examination & 30% course work (15% Test and 15% Quiz/PBL)and 15% Quiz/PBL)
• 1. To classify different types of advanced 1. To classify different types of advanced composite materialscomposite materials
• 2. To select and justify a suitable advanced 2. To select and justify a suitable advanced composite materials for specific applicationscomposite materials for specific applications
• 3. To propose a suitable fabrication 3. To propose a suitable fabrication technique of advanced composite materials technique of advanced composite materials for specific applicationsfor specific applications
• 4. To apply suitable theory to estimate the 4. To apply suitable theory to estimate the properties of the advanced composite properties of the advanced composite materialsmaterials
• Widely used- ease of processing, Widely used- ease of processing, lightweight & desirable mechanical lightweight & desirable mechanical propertiesproperties
Metal Matrix Composites Metal Matrix Composites (MMC)(MMC)• Generate wide interest in researchGenerate wide interest in research• Not as widely use as PMCNot as widely use as PMC• Higher strength, stiffness & fracture Higher strength, stiffness & fracture
toughnesstoughness• Can withstand elevated temperature Can withstand elevated temperature
in corrosive environment than PMCin corrosive environment than PMC• Most metal and alloy can be used as Most metal and alloy can be used as
Pole (Construction Pole (Construction Industry)Industry)
• Traditional Traditional woodwood→steel→concrete→poly→steel→concrete→polymer composite (mer composite (made of made of layers of glass fabric + resins)layers of glass fabric + resins)
• Advantages of Polymer Advantages of Polymer CompositesComposites
1) won't rust, or corrode1) won't rust, or corrode
2)require no preservatives2)require no preservatives
3) light-weight, lighter than 3) light-weight, lighter than aluminum, wood, steel or aluminum, wood, steel or concrete. concrete.
4) the lowest possible total 4) the lowest possible total installed costinstalled cost
Modern vaulting polesModern vaulting polesHHere is an example of a vaulting pole made ere is an example of a vaulting pole made from glass fibre reinforced polymer (GFRP) from glass fibre reinforced polymer (GFRP) composites and carbon fibre reinforced composites and carbon fibre reinforced polymer (CFRP) compositespolymer (CFRP) composites
Benefits of Composites???Benefits of Composites???
• Bahan tetulang/penguat Bahan tetulang/penguat (Reinforcement)(Reinforcement)
• Antaramuka/antarafasaAntaramuka/antarafasa
Matriks: FungsiMatriks: Fungsi
• Mengikat bahan tetulangMengikat bahan tetulang
• Memindah dan mengagihkan beban Memindah dan mengagihkan beban kenaan kepada tetulang, ttp kenaan kepada tetulang, ttp pemindahan beban bergantung pemindahan beban bergantung kepada ikatan antaramuka kepada ikatan antaramuka
MatriksMatriks
• Needs to withstand temperature Needs to withstand temperature variationsvariations
• Offer weight advantages, ease of Offer weight advantages, ease of handlinghandling
Bahan tetulang: Fungsi Bahan tetulang: Fungsi bergantung kepada matriksbergantung kepada matriks
• matriks logam: utk meningkatkan matriks logam: utk meningkatkan kekerasan dan ketahanan rayapan kekerasan dan ketahanan rayapan suhu tinggisuhu tinggi
• matriks polimer: utk memperbaiki matriks polimer: utk memperbaiki sifat kekakuan, kekuatan dan sifat kekakuan, kekuatan dan keliatankeliatan
• Memindahkan tegasan daripada Memindahkan tegasan daripada matriks kepada bahan tetulangmatriks kepada bahan tetulang
Sometimes surface treatment is Sometimes surface treatment is carried out to achieve the required carried out to achieve the required bonding to the matrixbonding to the matrix
Types of matrix (natural and Types of matrix (natural and synthetic)synthetic)
• NaturalNatural– Silica sand, limestone (CaCO3), talc, etcSilica sand, limestone (CaCO3), talc, etc– Starch, epoxy based on soy bean, Starch, epoxy based on soy bean,
Faktor-faktor yang mengawal Faktor-faktor yang mengawal sifat-sifat kompositsifat-sifat komposit
• Komposisi komponenKomposisi komponen• -Komposisi setiap komponen -Komposisi setiap komponen
(matriks dan tetulang) (matriks dan tetulang) mempengaruhi terus sifat2 akhir mempengaruhi terus sifat2 akhir komposit. komposit.
• XXcc = X = Xff V Vff + X + Xmm (1 - V (1 - Vff ) – ) – Hukum Hukum Pencampuran/Rule of MixturePencampuran/Rule of Mixture
• XXcc = Sifat komposit = Sifat komposit• XXf f = Sifat gentian= Sifat gentian• XXmm= Sifat matriks= Sifat matriks
RonggaRongga
•ruang udara yang terkumpul atau ruang udara yang terkumpul atau terperangkap dalam kompositterperangkap dalam komposit
•dalam komposit, rongga wujud dalam komposit, rongga wujud dalam matriks, antaramuka dan dalam matriks, antaramuka dan antara gentian-gentianantara gentian-gentian
•kehadiran rongga dalam struktur kehadiran rongga dalam struktur komposit menyebabkan wujudnya komposit menyebabkan wujudnya titik pemusatan tegasan- titik pemusatan tegasan- menjejaskan sifat-sifat akhir menjejaskan sifat-sifat akhir kompositkomposit
•ruang udara yang terkumpul atau ruang udara yang terkumpul atau terperangkap dalam kompositterperangkap dalam komposit
•dalam komposit, rongga wujud dalam komposit, rongga wujud dalam matriks, antaramuka dan dalam matriks, antaramuka dan antara gentian-gentianantara gentian-gentian
•kehadiran rongga dalam struktur kehadiran rongga dalam struktur komposit menyebabkan wujudnya komposit menyebabkan wujudnya titik pemusatan tegasan- titik pemusatan tegasan- menjejaskan sifat-sifat akhir menjejaskan sifat-sifat akhir kompositkomposit
Bentuk, saiz, orientasi dan Bentuk, saiz, orientasi dan taburan gentiantaburan gentian
• Bentuk gentian (partikel- bulat, Bentuk gentian (partikel- bulat, whiskers, bersudut, etc)whiskers, bersudut, etc)
• Orientasi gentian (satu arah, dua arah, Orientasi gentian (satu arah, dua arah, pelbagai arah)- mempengaruhi sifat pelbagai arah)- mempengaruhi sifat isotropi dan tak isotropiisotropi dan tak isotropi
Examples of different Examples of different composite geometrical composite geometrical arrangementsarrangements
Teknik dan parameter Teknik dan parameter pemprosesanpemprosesan
• mempengaruhi pemilihan bahan mempengaruhi pemilihan bahan mentah yang sesuai, bentuk akhir mentah yang sesuai, bentuk akhir komposit, kandungan rongga dllkomposit, kandungan rongga dll
• mempengaruhi struktur dan mempengaruhi struktur dan morfologi sesuatu komposit morfologi sesuatu komposit