|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Biological Materials Science
||Investigation of Multiscale Hierarchical Structure and Micromechanical Properties of Cholla Cactus
||Swapnil Morankar, Amey Luktuke, Sridhar Niverty, Hamidreza Torbati-Sarraf, Yash Mistry, Clint A. Penick, Dhruv Bhate, Nikhilesh Chawla
|On-Site Speaker (Planned)
Many biological materials have multiscale hierarchical structures which can inspire the development of high-performance lightweight structural materials. Cholla cactus (Cylindropuntia acanthocarpa) is one such example. Cholla cacti have a mesh-like woody skeleton that has likely evolved to reduce weight and provide support for components that store water to allow the cactus to survive in arid conditions. In the present work, a correlative microscopy-based approach involving x-ray microtomography and scanning electron microscopy was used to understand the multiscale structure of Cholla wood. The three-dimensional data generated by x-ray microtomography was further utilized to extract key structural parameters (size and shape of porosity, length and thickness of cell walls, etc.). Nanoindentation and scanning probe microscopy techniques were employed to understand the micromechanical properties of wood cell walls and were correlated to their hierarchical structure. The impact of the unique hierarchical structure on the design of engineering materials will be discussed.
||Biomaterials, Characterization, Mechanical Properties