IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X, Volume 8, Issue 6 (Sep. - Oct. 2013), PP 34-39 www.iosrjournals.org www.iosrjournals.org 34 | Page Experimental Test on Gfrp Gratings for Mechanical Properties and Chemical Resistance B. Devender 1 , A.Purushotham 2 & O.Vasudeva Reddy 3 1 [M.Tech (CAD/CAM) student, Department of mechanical engineering, Sree nidhi Institute of Science and Technology (Autonomous), Hyderabad, A.P, India, 2 [Supervisor, Professor, Department of mechanical engineering, Sree nidhi institute of science& technology, Hyderabad, A.P, India] 3 [Managing Director, Advanced Millennium Materials, Phase-1, Cherlapally, Hyderabad, (AP) India] Abstract: Fiberglass reinforced plastic (FRP) grating is manufactured by combining a resin and fiberglass. That makes it a composite material. Fiberglass grating does not corrode like steel gratings. They are used in corrosive environments. Fibre glass grating is formed using continuous interwoven glass fibres as reinforcement material and resin as the matrix with continuous solidification through a mould system. The uniform construction provides excellent bi-directional mechanical properties. It is beneficial to all industries whether it be chemical, pharmaceutical, offshore or leisure to name just a few with many applications like platforms, floorings, walkways, trench covers, ramps and cable trough covers. Fibreglass grating is exceptionally slip resistant and the gritted and concave anti-slip grating offers excellent traction in wet and icy conditions. In this work, molded fibre glass gratings are manufactured and subjected to tensile test, chemical resistance, water absorption, flexural test, load bearing test. Keywords: Molded fibre glass gratings, glass fibers, tensile strength, flexural strength mechanical properties, and chemical resistance. I. Introduction A grating is any regularly spaced collection of essentially identical, parallel, elongated elements. Gratings usually consist of a single set of elongated elements, but can consist of two sets, in which case the second set is usually perpendicular to the first (as illustrated). When the two sets are perpendicular, this is also known as a grid or a mesh. Fiberglass grating is an integral construction single piece fiberglass roving reinforced with Isopthalic resin typically composed of 60-65% resin by weight and immensely strong continuous glass fibers manufactured by a specially designed process that provides a property of good mechanical and corrosion resistance. These are safe & ideal for chemically corrosive environment having long maintenance free life. Advantages of fibre glass grating are:  High corrosion resistance level  Electric insulation  Durability therefore economical and available in anti skid  Fire retardant and ultraviolet protection types. II. Material And Manufacturing Method The glass fiber rovings used for manufacturing of the gratings was supplied by Owens Corning India Ltd, with the designation 399. The matrix material was Isopthalic resin Polyester based on Isopthalic / superior mixed glycol is a high quality, medium viscosity, medium reactive specially formulated for processes like Filament winding, spray up/hand layup. It exhibits good chemical resistance and possess superior mechanical and thermal properties. The resin has exceptionally good hydraulic resistance making it an ideal choice for coating / laminating applications. The ISO resin forms strong bond with fiber glass rovings and depicts good wet out characteristics due to good weathering properties and retention of glass it is suitable for corrosion resistant applications. III. Manufacturing Of Frp Gratings FRP gratings are processed in two different manufacturing methods. Generally gratings are classified according to type of manufacturing process. They are: