Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/89358
Title: Investigation of Quasi-Static Indentation Response of Inkjet Printed Sandwich Structures under Various Indenter Geometries
Authors: Nagalingam, Arun Prasanth
Yap, Yee Ling
Sing, Swee Leong
Yeong, Wai Yee
Wei, Jun
Dikshit, Vishwesh
Keywords: Additive Manufacturing
Three-dimensional (3D) Printing
Issue Date: 2017
Source: Dikshit, V., Nagalingam, A. P., Yap, Y. L., Sing, S. L., Yeong, W. Y., & Wei, J. (2017). Investigation of Quasi-Static Indentation Response of Inkjet Printed Sandwich Structures under Various Indenter Geometries. Materials, 10(3), 290-.
Series/Report no.: Materials
Abstract: The objective of this investigation was to determine the quasi-static indentation response and failure mode in three-dimensional (3D) printed trapezoidal core structures, and to characterize the energy absorbed by the structures. In this work, the trapezoidal sandwich structure was designed in the following two ways. Firstly, the trapezoidal core along with its facesheet was 3D printed as a single element comprising a single material for both core and facesheet (type A); Secondly, the trapezoidal core along with facesheet was 3D printed, but with variation in facesheet materials (type B). Quasi-static indentation was carried out using three different indenters, namely standard hemispherical, conical, and flat indenters. Acoustic emission (AE) technique was used to capture brittle cracking in the specimens during indentation. The major failure modes were found to be brittle failure and quasi-brittle fractures. The measured indentation energy was at a maximum when using a conical indenter at 9.40 J and 9.66 J and was at a minimum when using a hemispherical indenter at 6.87 J and 8.82 J for type A and type B series specimens respectively. The observed maximum indenter displacements at failure were the effect of material variations and composite configurations in the facesheet.
URI: https://hdl.handle.net/10356/89358
http://hdl.handle.net/10220/44887
ISSN: 1996-1944
DOI: http://dx.doi.org/10.3390/ma10030290
Rights: © 2017 by The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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metadata.item.fulltext: With Fulltext
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