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See detailMeasuring mode I fracture properties of thick-layered structural silicone sealants
Rosendahl, P. L.; Staudt, Y.; Odenbreit, Christoph UL et al

in International Journal of Adhesion and Adhesives (2019), 91

The failure hyperelastic structural sealant joints is a fracture mechanics problem. Its modeling requires knowledge of the material property fracture toughness. The present work describes a methodology ... [more ▼]

The failure hyperelastic structural sealant joints is a fracture mechanics problem. Its modeling requires knowledge of the material property fracture toughness. The present work describes a methodology for determining the mode I bulk material fracture toughness of structural silicone sealants. The concept is demonstrated using DOWSIL™ 993 as an example. In total we manufactured, tested and evaluated 13 DCB specimens of 6mm and 12mm adhesive thickness. The fracture toughness is identified from J-integral measurements. The theory for determining the J-integral at finite deformations is laid out and an automated data analysis procedure is suggested. The presented approach further allows... [less ▲]

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