Influence of Angle Ply Orientation of Stacking On Mechanical Properties of Glass-Polyester Composite Laminate
K. Vasantha Kumar1, P. Ram Reddy2, D.V. Ravi Shankar3
1K.Vasantha Kumar, Assistant Professor, Mechanical Engineering Department, JNTUH College of Engineering Jagityal, Nachupally (Kondagattu) Karim Nagar, India.
2Dr. P. Ram Reddy, Former Registrar JNTU Hyderabad, India.
3Dr. D.V. Ravi Shankar, Principal, TKR College Of  Engineering & Technology, Hyderabad, India.
Manuscript received on September 24, 2013. | Revised Manuscript received on October 10, 2013. | Manuscript published on October 30, 2013. | PP: 432-438 | Volume-3, Issue-1, October 2013. | Retrieval Number:  A2300103113/2013©BEIESP

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Abstract: This work investigates that the influences of angle ply orientation of stacking on mechanical properties of a E-glass general polyester and Isophthalic polyester composite laminate experimentally and comparing with the results with laminated software. He laminated software is developed based on laminate theory. Laminated Composite materials have characteristics of high modulus/weight and strength/weight ratios [1], excellent fatigue properties, and non-corroding behaviour. These advantages encourage the extensive application of composite materials, for example, in wind turbine blades, boat hulls, automobiles, water tanks, roofing, pipes and cladding, and aerospace. The understanding of the mechanical behaviour of composite materials is essential for their design and application. Although composite materials are often heterogeneous, they are presumed homogeneous from the viewpoint of macro mechanics and only the averaged apparent mechanical properties are considered. The most common method to determine these constants is static testing. In this work ten types of composite laminate specimens with different stacking sequences, i.e., (±00 , ±100 , ±300 , ±400 , ±450 , ±550 , ±650 , ± 750 , and ±900 ) are fabricated. In this work, the specimens are prepared in the laboratory using compression mould technique E- glass as fiber & with Polyester resin as an adhesive. The specimens are prepared for testing as per ASTM standards to estimate the tensile modulus.
Keywords: Compression moulding, Degree of Orientation, E-glass, General purpose polyester, Isophthalic polyester, MEKP, Stacking sequence, Tensile property.