International Journal of Advances in Scientific Research and Engineering-IJASRE

Evaluating the Effect of Interface Shape on the fracture properties of Cellulose Nanocrystal (CNC) Nano-Films

Article Category: Mechanical Engineering

DOI: 10.31695/IJASRE.2019.33472

Pages: 169-177

Author: Jim Huang,Mehrdad Bor

Abstract: Crystalline nanocellulose (CNC) is a new promising green material that gained significant attention in the past decade. This study evaluates the effects of pattern interfaces on the fracture toughness in naturally joined double cantilever beam of crystalline nanocellulose (CNC) nanofilms. Three different patterns, e.i., triangular, trapezoidal and circular with different geometric properties were considered and compared with flat (no pattern) interface. We use a multiscale framework by using adhesion and elastic properties are nanoscale from molecular dynamics and upscale the values to the properties of cohesive element in finite element framework. The result shows that pattern interfaces significantly improve the toughness of CNC nanofilms. In particular, trapezoidal interface increase the fracture toughness by 140%.

Keyword: Double cantilever beam, Pattern interfaces; Cohesive elements, Multiscale modeling.

This work is licensed under a Creative Commons Attribution 4.0 (International) Licence. (CC BY-NC 4.0)
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