Multi-side Digital Image Correlation (DIC) evaluation of CFRP bonded to poplar timber
Francisco J. Rescalvo, Cristian Timbolmas, Rafael Bravo, María Portela, Jose Lorenzana
Abstract
Digital Image Correlation (DIC) is a technique that permits full analysis of the strain field distribution upon the surface of solids. The nonlinear bonding interaction between poplar timber and CFRP (Carbon Fiber Reinforced Polymers) reinforcement under mixed mode I&II is analyzed. The test setup inserts an eccentric axial load and a corresponding bending moment. The experiments show strain distributions composed of two lateral transfer zones in which bonding mode II predominates and, a central zone of constant strain in which bonding mode I is dominant. The maximum load capacity increases with the bond length until the effective bond length.
Topics & Concepts
Digital image correlationMaterials scienceComposite materialStrain (injury)Structural engineeringFibre-reinforced plasticBendingPolymerMode (computer interface)Carbon fiber reinforced polymerBending momentNonlinear systemReinforced concreteComputer scienceEngineeringPhysicsInternal medicineMedicineOperating systemQuantum mechanicsStructural Behavior of Reinforced ConcreteStructural Load-Bearing AnalysisWood Treatment and Properties