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Snake fangs: 3D morphological and mechanical analysis by microCT, simulation, and physical compression testing.
Gigascience 2018; 7(1):1-8G

Abstract

This Data Note provides data from an experimental campaign to analyse the detailed internal and external morphology and mechanical properties of venomous snake fangs. The aim of the experimental campaign was to investigate the evolutionary development of 3 fang phenotypes and investigate their mechanical behaviour. The study involved the use of load simulations to compare maximum Von Mises stress values when a load is applied to the tip of the fang. The conclusions of this study have been published elsewhere, but in this data note we extend the analysis, providing morphological comparisons including details such as curvature comparisons, thickness, etc. Physical compression results of individual fangs, though reported in the original paper, were also extended here by calculating the effective elastic modulus of the entire snake fang structure including internal cavities for the first time. This elastic modulus of the entire fang is significantly lower than the locally measured values previously reported from indentation experiments, highlighting the possibility that the elastic modulus is higher on the surface than in the rest of the material. The micro-computed tomography (microCT) data are presented both in image stacks and in the form of STL files, which simplifies the handling of the data and allows its re-use for future morphological studies. These fangs might also serve as bio-inspiration for future hypodermic needles.

Authors+Show Affiliations

CT Scanner Facility, Stellenbosch University, Stellenbosch, Private bag X1, South Africa, 7602.Department of Botany and Zoology, Stellenbosch University, Stellenbosch, Private bag X1, South Africa, 7602.CT Scanner Facility, Stellenbosch University, Stellenbosch, Private bag X1, South Africa, 7602.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

29267887

Citation

du Plessis, Anton, et al. "Snake Fangs: 3D Morphological and Mechanical Analysis By microCT, Simulation, and Physical Compression Testing." GigaScience, vol. 7, no. 1, 2018, pp. 1-8.
du Plessis A, Broeckhoven C, le Roux SG. Snake fangs: 3D morphological and mechanical analysis by microCT, simulation, and physical compression testing. Gigascience. 2018;7(1):1-8.
du Plessis, A., Broeckhoven, C., & le Roux, S. G. (2018). Snake fangs: 3D morphological and mechanical analysis by microCT, simulation, and physical compression testing. GigaScience, 7(1), pp. 1-8. doi:10.1093/gigascience/gix126.
du Plessis A, Broeckhoven C, le Roux SG. Snake Fangs: 3D Morphological and Mechanical Analysis By microCT, Simulation, and Physical Compression Testing. Gigascience. 2018 01 1;7(1):1-8. PubMed PMID: 29267887.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Snake fangs: 3D morphological and mechanical analysis by microCT, simulation, and physical compression testing. AU - du Plessis,Anton, AU - Broeckhoven,Chris, AU - le Roux,Stephan G, PY - 2017/08/04/received PY - 2017/12/07/accepted PY - 2017/12/22/pubmed PY - 2018/11/20/medline PY - 2017/12/22/entrez SP - 1 EP - 8 JF - GigaScience JO - Gigascience VL - 7 IS - 1 N2 - This Data Note provides data from an experimental campaign to analyse the detailed internal and external morphology and mechanical properties of venomous snake fangs. The aim of the experimental campaign was to investigate the evolutionary development of 3 fang phenotypes and investigate their mechanical behaviour. The study involved the use of load simulations to compare maximum Von Mises stress values when a load is applied to the tip of the fang. The conclusions of this study have been published elsewhere, but in this data note we extend the analysis, providing morphological comparisons including details such as curvature comparisons, thickness, etc. Physical compression results of individual fangs, though reported in the original paper, were also extended here by calculating the effective elastic modulus of the entire snake fang structure including internal cavities for the first time. This elastic modulus of the entire fang is significantly lower than the locally measured values previously reported from indentation experiments, highlighting the possibility that the elastic modulus is higher on the surface than in the rest of the material. The micro-computed tomography (microCT) data are presented both in image stacks and in the form of STL files, which simplifies the handling of the data and allows its re-use for future morphological studies. These fangs might also serve as bio-inspiration for future hypodermic needles. SN - 2047-217X UR - https://www.unboundmedicine.com/medline/citation/29267887/Snake_fangs:_3D_morphological_and_mechanical_analysis_by_microCT_simulation_and_physical_compression_testing_ L2 - https://academic.oup.com/gigascience/article-lookup/doi/10.1093/gigascience/gix126 DB - PRIME DP - Unbound Medicine ER -