Tensile Strength Prediction of Woven Composite Bonded Joint

Abstract

A progressive damage method is adopted to predict the structural strength of a woven out-of plane composite bonded π joint. A 3D progressive damage model is established and analyzed via a user defined subroutine embedded into the general FEA package. The numerical prediction gives the information of damage onset, damage propagation and final failure pattern, initial and final failure strength. Three samples of woven composite π joint under tensile load are tested to verify the numerical results. The numerical prediction agrees well with the experimental outcomes. All the numerical and experimental results provide insight into the basic understanding of static strength of woven composite bonded π joint.

Fatigue Stiffness Degradation Behaviour of Woven Composite π Joint

“…The stacking sequence of L prepreg is [(90,0)/(-45,45)], the stacking sequence of U prepreg is [(45,-45)] and the stacking sequence of base prepreg is [(-45,45)/(90,0)].The connections between the L, U and base prepreg are two unidirectional carbon/bismaleimide (UDCB) prepreg with 0º fibre direction prism-like fillers. The skin is manufactured by a glass fibre composite core covered with eight plies of UDCB prepregs on both sides with the stacking sequence [45°/90°/-45°/0°]s. The web is fabricated by a Kevlar honeycomb and glass fibre reinforcement composite covered with eight plies of UDCB prepregs on both sides with the stacking sequence [90°/90°/-45°/45°]s. The material parameters can be found in [7].…”

Influence of π overlaminates on the mechanical behavior of all-composite adhesively bonded π joints

“…20 More understanding on the mechanical behaviors of such joints under static loads has been obtained. 18,21,22 Influences of materials, configurations and geometry dimensions on the mechanical behaviors of composite joints under a bending load have been documented. 23 Based on the existing investigation, the action of the overlaminate is protuberant since it is the connection kernel of joints.…”

Strength prediction of composite π joint under bending load and study of geometric and material variations effects

“…6 More understanding on the strength and failure behaviour of such joints under static loads has been obtained. 4,7,8 There is a large body of literatures to investigate structural design for out-of-plane L and T joints, etc. These provided some ideas for the structural design of composite p joints.…”