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RESEARCH PRODUCT
Bearing strength and failure behavior of pinned hybrid glass-flax composite laminates
Antonino ValenzaPaolo BruzzanitiLuigi CalabreseVincenzo FioreT. Scalicisubject
Materials scienceBearing; Failure modes; Flax; Glass; Hybrid laminate; Mechanical joints; Organic Chemistry; Polymers and PlasticsPolymers and PlasticsComposite number02 engineering and technologyMechanical jointlaw.inventionStress (mechanics)Hybrid laminate0203 mechanical engineeringlawWoven fabricFlaxBearing capacityComposite materialBearing (mechanical)Organic ChemistryFailure modeEpoxyComposite laminates021001 nanoscience & nanotechnology020303 mechanical engineering & transportsSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiMechanical jointvisual_artBearingvisual_art.visual_art_mediumGla0210 nano-technologydescription
Abstract The aim of the present work is to evaluate the influence of external layers of glass woven fabric on the pin-hole strength of flax/epoxy laminates. Single lap bearing tests were carried out to evaluate the fastened joint performances depending on laminate stacking sequence. In order to better identify the mechanical behavior of the hybrid laminate, full glass and flax laminates were also compared. In particular, bearing stress and failure mechanisms were investigated at varying joint geometry. Furthermore, an experimental failure map, clustering main failure modes of pinned hybrid composite laminate, was used to better clarify the relationship between mechanical failure and geometrical parameters of joints. The experimental results showed that the presence of external layers of glass fabric in a flax/epoxy laminate positively influences the mechanical performance of mechanically fastened joints. Furthermore, in a hybrid laminate, bearing fracture mechanism occurs for a large range of joint geometries, thus supporting the joining design of flax based composite laminates.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-08-01 |