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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201700060
|2 doi
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|a pubmed24n0907.xml
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|a eng
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|a Gu, Grace X
|e verfasserin
|4 aut
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|a Hierarchically Enhanced Impact Resistance of Bioinspired Composites
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 18.07.2018
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a An order of magnitude tougher than nacre, conch shells are known for being one of the toughest body armors in nature. However, the complexity of the conch shell architecture creates a barrier to emulating its cross-lamellar structure in synthetic materials. Here, a 3D biomimetic conch shell prototype is presented, which can replicate the crack arresting mechanisms embedded in the natural architecture. Through an integrated approach combining simulation, additive manufacturing, and drop tower testing, the function of hierarchy in conch shell's multiscale microarchitectures is explicated. The results show that adding the second level of cross-lamellar hierarchy can boost impact performance by 70% and 85% compared to a single-level hierarchy and the stiff constituent, respectively. The overarching mechanism responsible for the impact resistance of conch shell is the generation of pathways for crack deviation, which can be generalized to the design of future protective apparatus such as helmets and body armor
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|a Journal Article
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|a 3D-printing
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|a biological materials
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|a conch shell
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|a drop tower testing
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| 650 |
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4 |
|a finite element modeling
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| 700 |
1 |
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|a Takaffoli, Mahdi
|e verfasserin
|4 aut
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1 |
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|a Buehler, Markus J
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 29(2017), 28 vom: 04. Juli
|w (DE-627)NLM098206397
|x 1521-4095
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|g volume:29
|g year:2017
|g number:28
|g day:04
|g month:07
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|u http://dx.doi.org/10.1002/adma.201700060
|3 Volltext
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