Dev-Chelot-Channeline-TME-25-Presentation.pdf

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1、Analytical and numerical homogenization of Channeline GRP structural liners for various geometriesDr.Dev ChelotHead of Quality and R&DRehabilitation work in sewage industryThe existing sewers consists of culverts,bricks,stones,concretes,etc.Issues:Effects of H2S attack,corrosion,structural loading b

2、eyond its capability.Rehabilitating sewers is necessary for such Choice of Resins:Polyester,Vinyl Ester,Epoxy resinMulti-functional capabilitiesStructuralChemical ResistantLight WeightFlexible Pipes:Reduced brittle damageCan be custom fabricated to any size,shape or form using hand layup method.Cost

3、 effective TransportationWhy Composite materials(GRP)?Problems Associated with unitary pipesAccess to drop large diameter pipesTime consuming Expensive task Solution:UnitaryMulti-PieceTIssues specific to Multi-piece pipesUsage of the right adhesiveMechanical stiffness and strength reduction at joint

4、s.Corrosive damage to the inside of the pipeUnitaryMulti-PAssembling of multi-segmental Mechanical Loads:Bending Tension Compression Stiffness HoopLoading Conditions on a Sewer PRing stiffness test/Parallel plate testStandard:ASTM D2412 SpecificationRing stiffness test involves ascertaining whether

5、GRP pipes can maintain their shape and structural integrity when exposed to various loads.Deflection rate:12.5mm/min(as per ASTM D2412)Length of the specimen:300mm(+/-5mm)for ID/H 1524mmTest Outcomes Max Load at 5%Deflection in(mm)Pipe Stiffness(PS)PS=()Shapes Dimension Circular Pipe 1(CP1)&Three-Pi

6、ece Circular(CP1-3)Internal Diameter:2200mm Length:440mm Wall Thickness 32mm Circular Pipe 2(CP2)&Four-Piece Circular(CP2-4)Internal Diameter:4876.80mm Length:975.36mm Wall Thickness 90mm Box Pipe(BP)&Two-Piece Box(BP-2)Height:316mm Width:536mm Length:305mm Wall Thickness:25.4mm Semi Elliptical Pipe