Effect of bond thickness on fracture and fatigue strength of adhesively bonded composite joints

A tapered bondline thickness double cantilever beam (DCB) specimen geometry for combinatorial fracture studies of adhesive bonds

“…The effect of bondline thickness (t), on adhesive joint performance has been the subject of considerable research, with many studies showing quite significant differences in resistance to failure as a function of the adhesive bondline thickness [1][2][3][4][5][6][7][8][9][10][11][12][13]. It has been observed, as shown schematically in Fig.…”

Determination of Traction Separation Law for Interfacial Failure in Adhesive Joints at Different Loading Rates

“…The failure was observed to change from adhesion failure to cohesive failure for adhesive layer thickness greater than 0.075 mm in [12] whereas the failure was cohesive in nature in the studies [13][14][15][16]. These studies indicate that the CZM parameters or the TSL itself could depend on the adhesive layer thickness for a given system.…”

“…Investigations on the effect of adhesive layer thickness on the fracture behavior of adhesive joints have indicated a strong dependence of the fracture energy on adhesive thickness [12][13][14][15][16][17][18][19]. The failure was observed to change from adhesion failure to cohesive failure for adhesive layer thickness greater than 0.075 mm in [12] whereas the failure was cohesive in nature in the studies [13][14][15][16].…”

Dynamic fractures of adhesively bonded carbon fibre-reinforced polymeric joints

“…This effect is explained as results of increases in the stress distribution near the crack tip at lower adhesive thickness and, consequently, an increase in the FCGR. However, there exists a limit thickness, for which no changes in the FCG can be perceived (Mall & Ramamurthy, 1989). …”