One of the main sources of damage in laminated composite structures is delamination, separation of the plies in the low resistance thin resin‐rich interface between adjacent layers, particularly under compressive loading, impact or free‐edge stresses. Laminated composite materials are prone to damage during trimming, finishing and machining activities, which can lead to edge delamination. When subjected to transverse loading, contact stresses and impact loading, they are also susceptible to delamination, fibre pullout, fibre fracture and local matrix cracking. This chapter explains the experimental methodology for characterising the delamination fracture envelope of FRP composite materials, and talks about the procedure for producing the fracture envelope under various loading conditions for FRP laminates. The double cantilever beam (DCB), three‐point end notched flexure (3ENF) and mixed‐mode bending (MMB) tests are examined to establish the full delamination failure envelope under various mode mixity ratios, GII/GT.
Building Delamination Fracture Envelope under Mode I/Mode II Loading for FRP Composite Materials
2013-10-24
18 pages
Article/Chapter (Book)
Electronic Resource
English
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