Garner, S.N.

Hosseini, MS.

McKittrick, J.M.

Naleway, S.E.

English

Purdue E-Pubs

Purdue UniversityPurdue e-PubsIUTAM Symposium Architectured MaterialsMechanics Symposium ContributionsSep 17th, 12:00 AM - Sep 19th, 12:00 AMRole of Architecture in Controlling CrackPropagation Direction Bio-Inspired From BoxfishScuteMS. HosseiniPurdue University, mhossei@purdue.eduS.N. GarnerS.E. NalewayJ.M. McKittrickFollow this and additional works at: https://docs.lib.purdue.edu/iutamPart of the Engineering CommonsThis document has been made available through Purdue e-Pubs, a service of the Purdue University Libraries. Please contact epubs@purdue.edu foradditional information.Recommended CitationHosseini, M., Garner, S., Naleway, S., & McKittrick, J. (2018). Role of Architecture in Controlling Crack Propagation Direction Bio-Inspired From Boxfish Scute. In T. Siegmund & F. Barthelat (Eds.) Proceedings of the IUTAM Symposium Architectured MaterialsMechanics, September 17-19, 2018 , Chicago, IL: Purdue University Libraries Scholarly Publishing Services, 2018.https://docs.lib.purdue.edu/iutam/presentations/abstracts/31IUTAM Symposium Architectured Material Mechanics,  T. Siegmund, F. Barthelat, eds September 17-19, 2018, Chicago, IL, USA, , Chicago, IL, USA   Role of Architecture in Controlling Crack Propagation Direction Bio-Inspired From Boxfish Scute MS. Hosseini 1, S.N. Garner 2, S. E. Naleway 3 , J.M. McKittrick2, P.D. Zavattieri1  (1) Purdue University, Lyles School of Civil Engineering, 550 W Stadium Ave, West Lafayette, IN 47907, mhossei@purdue.edu (2) University of California, San Diego, Department of Mechanical and Aerospace Engineering, Engineer Ln, San Diego, CA 92161, sgarner@eng.ucsd.edu (3) The University of Utah, Department of Mechanical Engineering, 1495 E 100 S, Salt Lake City, UT 84112, steven.naleway@mech.utah.edu (4) University of California, San Diego, Department of Mechanical and Aerospace Engineering, Engineer Ln, San Diego, CA 92161, jmckittrick@eng.ucsd.edu (5) Purdue University, Lyles School of Civil Engineering, 550 W Stadium Ave, West Lafayette, IN 47907, zavattie@purdue.edu   KEYWORDS:  Patterned interface, Crack direction, Finite element analysis, Biomimetic  The boxfish carapace (Lactoria Cornuta) contains hexagonal dermal scutes, a combination of the brittle hexagonal plate (hydroxyapatite) on top of a very compliant (collagen) material. This offers a flexible armor that protects the boxfish against predators. While the mineral plates are separated by patterned sutures, there is no interphase material connecting them. Instead, the connection between mineralized plates is done through the collagen base. This is different from other naturally-occurring sutures (e.g. sutures in turtle, alligator, armadillo). It is hypothesized that this architecture (combination of sutures, brittle material, and collagen base) helps prevent catastrophic failure of the mineral plates under various multiaxial loading conditions (including bending and shear). In this work, we investigated the protective role of this architecture in controlling the crack directions under shear loading. The material properties of the boxfish scute (mineralized plate and collagen sub-base) are characterized through a combination of using in-situ tests and FE models. Our numerical results reveals that architecture of the sutures and combination of materials play a significant role in controlling crack direction. We present a parametric and systematic study along employing analytical and numerical tools to understand the role of different geometrical and material parameters of the system (e.g., sutures angle, dimensional aspect ratios, and modulus aspect ratio of hard and soft material properties) in controlling the crack direction. We also built bio-inspired specimens using gypsum (brittle plate) and silicone (soft substrate) in order to demonstrate this effect and understand this behavior. Acknowledgments This work is funded by a Multi-University Research Initiative through the Air Force Office of Scientific Research (AFOSR-FA9550-15-1-0009), National Science Foundation, Biomaterials Grant DMR-1507978 and NSF CAREER award CMMI 1254864. 

Role of Architecture in Controlling Crack Propagation Direction Bio-Inspired From Boxfish Scute

https://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=1030&amp;context=iutam

Role of Architecture in Controlling Crack Propagation Direction Bio-Inspired From Boxfish Scute

Abstract

Similar works

Full text

Available Versions

Purdue E-Pubs