The Effect of Internal Through Coolant on Surface Integrity Using Grinding Process of Aisi 1020.
Assignment BDB 4073/ 40703 Composites
Chapter 3: Mechanical Properties
SI 12/13
Lecturer: Mohd Azham Azmi
Instructions: * Answer all questions * This an individual assignment * Hand writing * Submission date 15 April 2013, before 9 AM, at Polymer Ceramic Lab (Upstairs), in assignment box En. Mohd Azham Azmi.
1. Calculate the vf and vm of the continuous and oriented aramid fiber-epoxy matrix composite having longitudinal modulus elasticity of 57.1 GPa. Given that the Eepoxy is 2.4 GPa and Earamid is 131 GPa.
2. Calculate the composite modulus of elasticity for polyester reinforced with 60 % by volume of E-glass under : (i) isostrain condition (ii) isostress condition Given Epolyester = 6.9 GPa and EE-glass=72.4 GPa
3. A unidirectional composite consists of 65% by volume of aramid fiber in an epoxy resin matrix.
The Young’s modulus of the fiber and matrix are 240 GPa and 4 GPa, respectively. Calculate the longitudinal modulus of the composite.
4. Compute the modulus of fiber and matrix phases for a continuous and oriented fiber-reinforced composite if vf= 0.25, Eisostrain= 19.7 GPa and Eisostress = 3.66 GPa.
5. Compare the longitudinal and transverse stiffnesses (E11/E22) of the composite with the same matrix but different fibers. Given Em/Ef=25 and Vf=0.5
6. Calculate the composite modulus for epoxy reinforced with 70 vol % boron filaments under: (a) isostrain condition (b) isostress condition Given : Eepoxy = 6.9 GPa, Eboron = 410 GPa
7. Refer Question 6 : Generate a plot modulus elasticity, E versus volume fraction of filaments, Vp for the case of epoxy reinforced boron filaments.
8. Calculate the composite modulus for 20 vol % SiC whiskers in an aluminium matrix under: (a) isostrain condition (b) isostress condition Given : Ealuminum = 69 GPa, ESiC = 430 GPa
9. Refer Question 8 : Generate a plot modulus elasticity, E versus volume
Chapter 3: Mechanical Properties
SI 12/13
Lecturer: Mohd Azham Azmi
Instructions: * Answer all questions * This an individual assignment * Hand writing * Submission date 15 April 2013, before 9 AM, at Polymer Ceramic Lab (Upstairs), in assignment box En. Mohd Azham Azmi.
1. Calculate the vf and vm of the continuous and oriented aramid fiber-epoxy matrix composite having longitudinal modulus elasticity of 57.1 GPa. Given that the Eepoxy is 2.4 GPa and Earamid is 131 GPa.
2. Calculate the composite modulus of elasticity for polyester reinforced with 60 % by volume of E-glass under : (i) isostrain condition (ii) isostress condition Given Epolyester = 6.9 GPa and EE-glass=72.4 GPa
3. A unidirectional composite consists of 65% by volume of aramid fiber in an epoxy resin matrix.
The Young’s modulus of the fiber and matrix are 240 GPa and 4 GPa, respectively. Calculate the longitudinal modulus of the composite.
4. Compute the modulus of fiber and matrix phases for a continuous and oriented fiber-reinforced composite if vf= 0.25, Eisostrain= 19.7 GPa and Eisostress = 3.66 GPa.
5. Compare the longitudinal and transverse stiffnesses (E11/E22) of the composite with the same matrix but different fibers. Given Em/Ef=25 and Vf=0.5
6. Calculate the composite modulus for epoxy reinforced with 70 vol % boron filaments under: (a) isostrain condition (b) isostress condition Given : Eepoxy = 6.9 GPa, Eboron = 410 GPa
7. Refer Question 6 : Generate a plot modulus elasticity, E versus volume fraction of filaments, Vp for the case of epoxy reinforced boron filaments.
8. Calculate the composite modulus for 20 vol % SiC whiskers in an aluminium matrix under: (a) isostrain condition (b) isostress condition Given : Ealuminum = 69 GPa, ESiC = 430 GPa
9. Refer Question 8 : Generate a plot modulus elasticity, E versus volume