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Fibre Glass Composite

Fibre Glass Composite - • Modulus of elasticity Taking...

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Glass Fibre Composite:  Thickness 0.00203 m Width 0.01301m Initial Length 0.204 m Final Length 0.2075 m Original Area = Width x Thickness ( . . ) 0 00203 x 0 01301  =  2.64103x10 -5  m 2 Tensile strength (ultimate strength) From the graph, the ultimate tensile strength is roughly about 104 MPa. Yield Strength From the graph, the ultimate tensile strength is roughly about 50 MPa. Proof yield strength For the carbon fibre, we don't take the proof yield strength due to the straight line we got when we plotted the graph in  Microsoft Excel. Upper/lower yield point For the fibre glass composite there is no upper and lower yield point, this is due to the curve line we got when we plotted  the graph in Microsoft Excel.

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Unformatted text preview: • Modulus of elasticity Taking two points to calculate the modulus of elasticity: σ 1 = 20.06788767 MPa ε 1 = 0.7375584 σ 2 = 40.11948839 MPa ε 2 = 1.546304 E = ∆ Stress ∆ Strain = .-. .- . 40 11948839 20 067887671 546304 0 7375584 = 20.79 MPa • % elongation to failure % elongation = ( ) l final-lolox100 = .- . . 0 2075 0 2040 204x 100 = 1.72% • % reduction in area % reduction in area = intial area-fracture areaintial areax100 = .-0 000064103 . . 0 0000641030 000064103x 100 = 0.0% • Engineering stress at fracture From the graph, the engineering stress at fracture is roughly about 104 MPa....
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Fibre Glass Composite - • Modulus of elasticity Taking...

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