Large strain viscoelastic dissipation during interfacial rupture in laminated glass

Abstract

In the dynamic rupture of laminated glass, it is essential to maximize energy dissipation. To investigate the mechanisms of energy dissipation, we have experimentally studied the delamination and stretching of a polymeric viscoelastic interlayer sandwiched between glass plates. We find that there is a velocity and temperature domain in which delamination fronts propagate in a steady state manner. At lower velocities, fronts are unstable, while at higher velocities, the polymer ruptures. Studying the influence of the interlayer thickness, we have shown that the macroscopic work of fracture during the delamination of the interlayer can be divided in two main components: (1) a near crack work of fracture which is related to the interfacial rupture and to the polymer deformation in the crack vicinity. (2) A bulk stretching work, which relates to the stretching of the interlayer behind the delamination front. Digital image correlation measurements showed that the characteristic length scale over which this stretching occurs is of the order of the interlayer thickness. Finally, an estimate of the bulk stretching work was provided, based on a simple uniaxial tensile test.

Understanding the influence of silicone elastomer properties on wedge-shaped microstructured dry adhesives loaded in shear

“…Currently, there is little doubt regarding the role of frictional energy dissipation during sliding of geckos [43,52] and other climbing animals [53]. The frictional sliding of elastomers pulled in shear is also supported by an increasing number of experimental studies [44,50,[53][54][55], and the phenomenon was recently observed in shearing of microstructured adhesives [38]. Frictional sliding is one consequence of the shear lag zone and refers to elastomer elongation while it is still in contact; this causes frictional energy dissipation.…”

“…Once the maximum contact area is reached during wedge engagement, the contact front will be subjected to a force that will result in a decaying stress along the contact length (shear lag zone). Once a threshold tangential force is reached, the contact front will start sliding on the substrate without detaching forming a frictional sliding zone and its length will depend on the interfacial adhesion [44,50,[53][54][55]. If the frictional sliding zone does not extend to the end of the contact length, the front of the microwedge will slide without wedge relaxation.…”

Adhesion rupture in laminated glass: influence of adhesion on the energy dissipation mechanisms

“…The TCTT was at the center of Paul Elzière's PhD thesis (Elzière 2016;Elzière et al 2017). In the TCTT, it is not straightforward to derive an elastic energy release rate, due to the highly dissipative nature of the polymer materials, which induces a coupling between debonding and large dissipative stretch.…”

“…This subject is related to the impact resistance of laminated glass, an industrial product made of a polymer foil-the interlayer-sandwiched between two glass plies. Previous work on impact resistance of laminated glass showed that for an impacting object of a few kilograms falling on a laminated glass at velocity typically between 1 and 10 m/s, the majority of the kinetic energy is converted into delamination and stretching of the interlayer (Nourry 2005;Elzière et al 2017).…”

On the bonding between glass and PVB in laminated glass

“…Also for the SGP, they could not successfully implement the same methods proposed by Seshadri. Other authors such as Vam Dam [13] and Elzière et al [14] have also carried out work on this topic. Additionally, further researchers have conducted studies on the numerical response of laminated glass subject to impact loading [15,16,17,18].…”