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2. For a graphite/epoxy unidirectional lamina (un-oriented lamina), find the following: ,--3 MPa 1) Compliance matrix...
3. A [0/90]s graphite/epoxy laminate is subjected to a tensile normal load of 1N/m in the x- dire...
3. A [0/90]s graphite/epoxy laminate is subjected to a tensile normal load of 1N/m in the x- direction (the direction parallel to the fibers in the 0° ply). Assume the thickness of each ply is 5 mm and use properties of unidirectional graphite/epoxy lamina from the table. a) Calculate the resultant strains of the laminate b) Calculate the global stresses in the laminate c) Calculate the principal stresses (stresses in material directions) of the top layer. Typical Mechanical Properties of...
235 Find the off-axis shear strength and mode of failure of a 60 boron/ epoxy lamina. Use the pro...
235 Find the off-axis shear strength and mode of failure of a 60 boron/ epoxy lamina. Use the properties of a unidirectional boron/epoxy lamina from Table 2.1. Apply the maximum stress failure, maximum strain, Tsai-Hill, and Tsai-Wu failure theories. TABLE 2.1 Tvpical Mechanical Properties of a Unidirectional Lamina (SI System of Units) Glass Boron/ Graphite/ Property SymbolUnits epoxy epoxy epoxy Fiber volume fraction Longitudinal elastic modulus Transverse elastic modulus Major Poisson's ratio Shear modulus Ultimate longitudinal tensile strength Ultimate longitudinal...
6.1 A simply supported laminated composite beam (Figure 6.6) made of glass/epoxy is 75 mm long an...
6.1 A simply supported laminated composite beam (Figure
6.6) made of glass/epoxy is 75 mm long and has the layup of
[±30]2s. A uniform load is applied on the beam that is 5 mm in
width. Assume each ply is 0.125 mm thick and the properties of
glass/epoxy are from Table 2.1.
1. What is the maximum deflection of the
beam?
2. Find the local stresses at the top of the
laminate.
q- 100 N/m 0.075 m FIGURE 6.6 Uniformly...
please solve 2 and 3 1- The reduced stiffness matrix [Q] is given for a unidirectional...
please solve 2 and 3
1- The reduced stiffness matrix [Q] is given for a unidirectional lamina as follows: 5.681 0.3164 0 ] [Q]=0.3164 1.217 0 Msi I 0 0 0.6006 Calculate the four engineering constants E1, E2, V12, G12 of the lamina. 2- Calculate the transformed reduced stiffness [Q] for the above problem for 0 = 30°. Glass 3- A glass/epoxy lamina consists of 70% fiber volume fraction. Use properties of glass and epoxy from the tables below to...
homework help. need help figuring out out to solve this problem? please show steps and box...
homework help. need help figuring out out to solve this problem?
please show steps and box answer.
Find the local stresses at the middle of the 30° ply in a [30/45] glass/ epoxy laminate that is subjected to the following mechanical and hygrothermal loads: Nr 108 lb/in.; ΔΤ -100°F; AC 500. Use the properties of a unidirectional glass/epoxy lamina given in Table 2.2 The thickness of each lamina is 0.005 m TABLE 2.2 al Mechanical Properties of a Unidirectional Lamina...
Composite Structures Tutorial 7 (week 8) 7.1 Find the five strength parameters of a unidirectional glass/epoxy lamina with 40% fiber volume fraction. Use the properties of glass and ep...
Composite Structures Tutorial 7 (week 8) 7.1 Find the five strength parameters of a unidirectional glass/epoxy lamina with 40% fiber volume fraction. Use the properties of glass and epoxy from Table 3.1 and Table 3.2. Assume the fibers have circular cross-section and are in a square array packing. 1-52.0-$01674870 225 47 Find 208 Mechanics of Composite Materials, Second Edi Convert PO or Excel Orl Select PDF I TABLE 3.1 Typical Properties of Fibers (SI System of Units) Units Graphite Glass...
A unidirectional glass fiber-epoxy matrix composite containing 65 vol% fiber, calculate the modulus of elasticity in...
A unidirectional glass fiber-epoxy matrix composite containing 65 vol% fiber, calculate the modulus of elasticity in the longitudinal direction and the transverse direction. Epoxy has a density of 1.54 g/cm3, modulus of elasticity of 3.5 GPa, yield strength of 60 MPa, tensile strength of 95 MPa, and Poisson’s ratio of 0.33. Glass fiber has a Poisson’s ratio of 0.22.
(b) For a unidirectional composite lamina with a 60% fibre volume fraction, the fibres are circular...
(b) For a unidirectional composite lamina with a 60% fibre volume fraction, the fibres are circular and are packed in a square array. Assume there is no void. The Young's modulus of the fibre is 180 GPa, the shear modulus of the fibre is 20 GPa. The Young's modulus of the matrix is 30 GPa, the shear modulus of the matrix is 4 GPa. The tensile strengths of fibre and matrix are 2000 MPa and 100 MPa separately. (1) Find...
Which of the following is not a strengthening method for crystalline metals? A. Hot-working B. Cold-working....
Which of the following is not a strengthening method for crystalline metals? A. Hot-working B. Cold-working. C. Grain refinement D. Interstitial alloy addition E. None of the above. These are all strengthening methods. A unidirecional composite of 35% by volume Eglans for in apocytsee Table 1)is subjected to a stress of 200 MPa parsial to the fore dinction. The strain in the comples Table 1 pdf 71 kn A 0070 0.000 C 728 OD. 0007 O E 0.004 Table 1...
6. An alloy rod is used in an application involving wide temperature changes. The alloy has the following properties: (1) elastic modulus of 70 GPa, (2) yield strength of 40 MPa, (3) fracture strengt...
6. An alloy rod is used in an application involving wide temperature changes. The alloy has the following properties: (1) elastic modulus of 70 GPa, (2) yield strength of 40 MPa, (3) fracture strength of 100 MPa, and (4) thermal expansion coefficient of 24x10-6 °c-1. The rod is 10 cm long and mechanically constrained. Note that the initial temperature is 20°C prior to any use. What is the temperature in [°C] to which the rod may be subjected without significant...
3. A [0/90]s graphite/epoxy laminate is subjected to a tensile normal load of 1N/m in the x- direction (the direction parallel to the fibers in the 0° ply). Assume the thickness of each ply is 5 mm and use properties of unidirectional graphite/epoxy lamina from the table. a) Calculate the resultant strains of the laminate b) Calculate the global stresses in the laminate c) Calculate the principal stresses (stresses in material directions) of the top layer. Typical Mechanical Properties of...
235 Find the off-axis shear strength and mode of failure of a 60 boron/ epoxy lamina. Use the properties of a unidirectional boron/epoxy lamina from Table 2.1. Apply the maximum stress failure, maximum strain, Tsai-Hill, and Tsai-Wu failure theories. TABLE 2.1 Tvpical Mechanical Properties of a Unidirectional Lamina (SI System of Units) Glass Boron/ Graphite/ Property SymbolUnits epoxy epoxy epoxy Fiber volume fraction Longitudinal elastic modulus Transverse elastic modulus Major Poisson's ratio Shear modulus Ultimate longitudinal tensile strength Ultimate longitudinal...
6.1 A simply supported laminated composite beam (Figure
6.6) made of glass/epoxy is 75 mm long and has the layup of
[±30]2s. A uniform load is applied on the beam that is 5 mm in
width. Assume each ply is 0.125 mm thick and the properties of
glass/epoxy are from Table 2.1.
1. What is the maximum deflection of the
beam?
2. Find the local stresses at the top of the
laminate.
q- 100 N/m 0.075 m FIGURE 6.6 Uniformly...
please solve 2 and 3
1- The reduced stiffness matrix [Q] is given for a unidirectional lamina as follows: 5.681 0.3164 0 ] [Q]=0.3164 1.217 0 Msi I 0 0 0.6006 Calculate the four engineering constants E1, E2, V12, G12 of the lamina. 2- Calculate the transformed reduced stiffness [Q] for the above problem for 0 = 30°. Glass 3- A glass/epoxy lamina consists of 70% fiber volume fraction. Use properties of glass and epoxy from the tables below to...
homework help. need help figuring out out to solve this problem?
please show steps and box answer.
Find the local stresses at the middle of the 30° ply in a [30/45] glass/ epoxy laminate that is subjected to the following mechanical and hygrothermal loads: Nr 108 lb/in.; ΔΤ -100°F; AC 500. Use the properties of a unidirectional glass/epoxy lamina given in Table 2.2 The thickness of each lamina is 0.005 m TABLE 2.2 al Mechanical Properties of a Unidirectional Lamina...
Composite Structures Tutorial 7 (week 8) 7.1 Find the five strength parameters of a unidirectional glass/epoxy lamina with 40% fiber volume fraction. Use the properties of glass and epoxy from Table 3.1 and Table 3.2. Assume the fibers have circular cross-section and are in a square array packing. 1-52.0-$01674870 225 47 Find 208 Mechanics of Composite Materials, Second Edi Convert PO or Excel Orl Select PDF I TABLE 3.1 Typical Properties of Fibers (SI System of Units) Units Graphite Glass...
(b) For a unidirectional composite lamina with a 60% fibre volume fraction, the fibres are circular and are packed in a square array. Assume there is no void. The Young's modulus of the fibre is 180 GPa, the shear modulus of the fibre is 20 GPa. The Young's modulus of the matrix is 30 GPa, the shear modulus of the matrix is 4 GPa. The tensile strengths of fibre and matrix are 2000 MPa and 100 MPa separately. (1) Find...
Which of the following is not a strengthening method for crystalline metals? A. Hot-working B. Cold-working. C. Grain refinement D. Interstitial alloy addition E. None of the above. These are all strengthening methods. A unidirecional composite of 35% by volume Eglans for in apocytsee Table 1)is subjected to a stress of 200 MPa parsial to the fore dinction. The strain in the comples Table 1 pdf 71 kn A 0070 0.000 C 728 OD. 0007 O E 0.004 Table 1...
6. An alloy rod is used in an application involving wide temperature changes. The alloy has the following properties: (1) elastic modulus of 70 GPa, (2) yield strength of 40 MPa, (3) fracture strength of 100 MPa, and (4) thermal expansion coefficient of 24x10-6 °c-1. The rod is 10 cm long and mechanically constrained. Note that the initial temperature is 20°C prior to any use. What is the temperature in [°C] to which the rod may be subjected without significant...
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