Characterization of the Fracture Behavior of Adhesive Joints

Mechanisms of Toughening Thermoset Resins

“…Nevertheless, the following speculations have been made based on the limited data available (69,70,73). The parameter Δ Ε is the same for all the materials tested and is similar in value to that obtained from an equivalent analysis of yield data.…”

“…Bitner et al (64) and Hunston et al (69), found that the results could be analyzed by time-temperature superposition techniques. The time to failure (t{) was the parameter chosen to characterize the loading rate.…”

“…The data in Figure 1 were analyzed by Bitner et al (64) and Hunston et al (69,70) who suggested that the results could be represented empirically by…”

“…Consequently, even though the extension of the zone down the bond line may continue, the decrease in zone height more than compensates, so the zone size and, hence, the toughness, decrease. Using this hypothesis, Bascom and Cottington (13) and Hunston et al (69) were able to successfully predict the optimum bond thickness (maximum fracture energy) at various temperatures and loading rates based on simple models for the deformation zone size.…”

“…Another study supporting the hypothesis is a stress analysis by Wang. Although the full analysis was never published, the conclusions were reported in several presentations and papers (69,87,(91)(92)(93).…”