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RESEARCH PRODUCT
A methodology for the rapid characterization of Mode II delamination fatigue threshold in FRP composites
Giuseppe PitarresiGiuseppe CatalanottiMarco DellairaT. Scalicisubject
Materials scienceParis law0211 other engineering and technologies02 engineering and technologySettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineThermoelastic damping0203 mechanical engineeringMaterials Science(all)Ultimate tensile strengthGeneral Materials ScienceComposite materialMode II fracture toughneFatigue021101 geological & geomatics engineeringMode II fracture toughnessMechanical EngineeringFibre reinforced compositeMode (statistics)Transverse crack tensile specimenFibre-reinforced plasticNear threshold020303 mechanical engineering & transports/dk/atira/pure/subjectarea/asjc/2500Mechanics of MaterialsCompatibility (mechanics)/dk/atira/pure/subjectarea/asjc/2200/2210Fibre reinforced compositesIndustrial material/dk/atira/pure/subjectarea/asjc/2200/2211description
Abstract A new methodology to measure the Mode II interlaminar fracture in fatigue for FRP composites is developed. The proposed methodology uses a Modified Transvers Crack Tensile (MTCT) specimen and is able to characterize the near threshold behavior in a robust, easier and significantly faster way than standard procedures. Analytical formulae, able to link the crack growth rate to the load or strain amplitudes, were found and verified, and their importance was explained, in particular, for what concerns the characterisation of the near threshold behavior. Experiments were performed both in load and strain control, while the delamination growth was monitored using different techniques including the Thermoelastic Stress Analysis (TSA). Experiments showed the reliability and effectiveness of the proposed procedure, and evidence its suitability and compatibility with current industrial material testing and qualification protocols with particular emphasis to industrial environment where a “no growth” design approach is employed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-10-01 |