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Application of Nanoindentation in the Characterization of a Porous Material with a Clastic Texture

In materials science and engineering, a significant amount of research has been carried out using indentation techniques in order to characterize the mechanical properties and microstructure of a broad range of natural and engineered materials. However, there are many unresearched or partly research...

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Autores principales: Kasyap, Sathwik S., Senetakis, Kostas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8401895/
https://www.ncbi.nlm.nih.gov/pubmed/34443102
http://dx.doi.org/10.3390/ma14164579
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author Kasyap, Sathwik S.
Senetakis, Kostas
author_facet Kasyap, Sathwik S.
Senetakis, Kostas
author_sort Kasyap, Sathwik S.
collection PubMed
description In materials science and engineering, a significant amount of research has been carried out using indentation techniques in order to characterize the mechanical properties and microstructure of a broad range of natural and engineered materials. However, there are many unresearched or partly researched areas, such as, for example, the investigation of the shape of the indentation load–displacement curve, the associated mechanism in porous materials with clastic texture, and the influence of the texture on the constitutive behavior of the materials. In the present study, nanoindentation is employed in the analysis of the mechanical behavior of a benchmark material composed of plaster of Paris, which represents a brand of highly porous-clastic materials with a complex structure; such materials may find many applications in medicine, production industry, and energy sectors. The focus of the study is directed at the examination of the influence of the porous structure on the load–displacement response in loading and unloading phases based on nanoindentation experiments, as well as the variation with repeating the indentation in already indented locations. Events such as pop-in in the loading phase and bowing out and elbowing in the unloading phase of a given nanoindentation test are studied. Modulus, hardness, and the elastic stiffness values were additionally examined. The repeated indentation tests provided validations of various mechanisms in the loading and unloading phases of the indentation tests. The results from this study provide some fundamental insights into the interpretation of the nanoindentation behavior and the viscoelastic nature of porous-clastic materials. Some insights on the influence of indentation spacing to depth ratio were also obtained, providing scope for further studies.
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spelling pubmed-84018952021-08-29 Application of Nanoindentation in the Characterization of a Porous Material with a Clastic Texture Kasyap, Sathwik S. Senetakis, Kostas Materials (Basel) Article In materials science and engineering, a significant amount of research has been carried out using indentation techniques in order to characterize the mechanical properties and microstructure of a broad range of natural and engineered materials. However, there are many unresearched or partly researched areas, such as, for example, the investigation of the shape of the indentation load–displacement curve, the associated mechanism in porous materials with clastic texture, and the influence of the texture on the constitutive behavior of the materials. In the present study, nanoindentation is employed in the analysis of the mechanical behavior of a benchmark material composed of plaster of Paris, which represents a brand of highly porous-clastic materials with a complex structure; such materials may find many applications in medicine, production industry, and energy sectors. The focus of the study is directed at the examination of the influence of the porous structure on the load–displacement response in loading and unloading phases based on nanoindentation experiments, as well as the variation with repeating the indentation in already indented locations. Events such as pop-in in the loading phase and bowing out and elbowing in the unloading phase of a given nanoindentation test are studied. Modulus, hardness, and the elastic stiffness values were additionally examined. The repeated indentation tests provided validations of various mechanisms in the loading and unloading phases of the indentation tests. The results from this study provide some fundamental insights into the interpretation of the nanoindentation behavior and the viscoelastic nature of porous-clastic materials. Some insights on the influence of indentation spacing to depth ratio were also obtained, providing scope for further studies. MDPI 2021-08-15 /pmc/articles/PMC8401895/ /pubmed/34443102 http://dx.doi.org/10.3390/ma14164579 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kasyap, Sathwik S.
Senetakis, Kostas
Application of Nanoindentation in the Characterization of a Porous Material with a Clastic Texture
title Application of Nanoindentation in the Characterization of a Porous Material with a Clastic Texture
title_full Application of Nanoindentation in the Characterization of a Porous Material with a Clastic Texture
title_fullStr Application of Nanoindentation in the Characterization of a Porous Material with a Clastic Texture
title_full_unstemmed Application of Nanoindentation in the Characterization of a Porous Material with a Clastic Texture
title_short Application of Nanoindentation in the Characterization of a Porous Material with a Clastic Texture
title_sort application of nanoindentation in the characterization of a porous material with a clastic texture
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8401895/
https://www.ncbi.nlm.nih.gov/pubmed/34443102
http://dx.doi.org/10.3390/ma14164579
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