Bamboo Bundle Corrugated Laminated Composites (BCLC). Part II. Damage Analysis under Low Velocity Impact Loading

Abstract

The objective of this study was to investigate the deformation behavior and damage model of bamboo bundle corrugated laminated composites under low velocity impact loading. The influence of different stacking sequences, i.e., bamboo bundle parallel to the corrugated waves (type I), cross-ply (type II), and perpendicular to the waves (type III), in laminates was studied in regard to impact loading. A shape parameter, K, was developed to quantify the effect of corrugation on impact response. The results of this study indicated that the type I composites displayed the optimum impact performance, followed by types II and III. The total energy absorbed by the type I laminates was 1.3 and 2.2 times as much as types II and III. The values of peak load were type I > type II > type III. The composites deformed and failed in different manners under low velocity impact loading: material failure, delamination and fiber tensile fracture, and structural collapse were the main modes of failure for type I, II, and III, respectively. The effect of the corrugated shape on impact properties of composites was positive for type I, but negative for type II composites.

Impact properties of bamboo bundle laminated veneer lumber by preprocessing densification technology

“…Among them, the most serious and complex is the impact loading, as invisible damage of various kinds occurs easily in the composites [3,4]. These failures, including matrix cracking, interfacial debonding, fiber breakage, and delamination, have a deleterious effect on the mechanical and physical properties of the composites [5][6][7].…”

“…Yu et al [10] studied the low-velocity impact properties and damage mechanisms for bamboo scrimber and bamboo/wood scrimbers with different densities and concluded that bamboo scrimber with higher density showed better impact performance. Jiang et al [7] investigated the impact properties of bamboo bundle corrugated laminated composites with three stacking sequences and found that the effect of the corrugated shape on the impact properties of composites was positive for bamboo bundles parallel to the corrugated waves, but negative for cross-ply board. However, the curing state of adhesion for the board made with preprocessing densification technology was completely different from the analysis above.…”

The mechanics of composite corrugated structures: A review with applications in morphing aircraft

“…One of these forms includes an interesting arrangement of two layers of corrugation in close proximity, so that frictional contact between the layers dissipates yet further impact energy. Jiang et al [73] considered impact on corrugations made from bamboo fibre based composites. This paper finds that the laminate stacking sequence and corrugation direction have a complicated effect on the impact energy absorbed by the impact, with a unidirectional layup with fibres oriented along the corrugation channels being optimal.…”

Effects of Aging Temperature on Mechanical Performance of Bamboo Bundle Laminated Veneer Lumber Joints Prepared by Intermittent Hot Press Process

“…Bamboo bundle laminated veneer lumber (BLVL) is a bamboo-based composite developed as a promising material for engineering applications because of advantages such as good dimensional stability, excellent mechanical performance, and a high resource yield ratio (over 90%) (Chen et al 2013a;Jiang et al 2013). Additionally, the methods used to study the changes in mechanical performance during the aging resistance test on bamboo-based products were adopted in previous works (Tomak et al 2012;Yu et al 2013;Huang a et al 2014) Recently, an intermittent hot-pressing process has been developed and applied to produce BLVLs with lengths greater than 6 m (Chen et al 2013b).…”