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Failure And Energy-Absorbing Mechanisms of the Bessbeetle Cuticle

Published online by Cambridge University Press:  15 February 2011

Katie E. G. Thorp  and
Stephen L. Gunderson
Katie E. G. Thorp
Affiliation:
University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168
Stephen L. Gunderson
Affiliation:
University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168
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Abstract

The failure processes of the bessbeetle cuticle were studied through the use of scanning electron microscopy, light microscopy, and image analysis techniques. Specimens of elytra and pronotum were failed in tension under the light microscope. The failure process was documented in real time through the use of image analysis equipment and a video camera. Failure occurs primarily in a mixed-mode fashion due to the inherent curvature of the cuticle specimens and their complex hierarchical microstructure. A variety of energy-absorbing mechanisms were observed including remote microcracking, fiber pullout, and crack bridging. Damage accumulation around the failed region is extensive consisting of a significant amount of delamination, fiber-matrix disbonds, microcracking, and intra-fiber failure. The experimental methods and results will be discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 330: Symposium S – Biomolecular Materials by Design , 1993 , 237
Copyright
Copyright © Materials Research Society 1994

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References

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