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Inverse Method to Determine Fatigue Properties of Materials by Combining Cyclic Indentation and Numerical Simulation

The application of instrumented indentation to assess material properties like Young’s modulus and microhardness has become a standard method. In recent developments, indentation experiments and simulations have been combined to inverse methods, from which further material parameters such as yield s...

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Autores principales: Sajjad, Hafiz Muhammad, ul Hassan, Hamad, Kuntz, Matthias, Schäfer, Benjamin J., Sonnweber-Ribic, Petra, Hartmaier, Alexander
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7412220/
https://www.ncbi.nlm.nih.gov/pubmed/32668811
http://dx.doi.org/10.3390/ma13143126
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author Sajjad, Hafiz Muhammad
ul Hassan, Hamad
Kuntz, Matthias
Schäfer, Benjamin J.
Sonnweber-Ribic, Petra
Hartmaier, Alexander
author_facet Sajjad, Hafiz Muhammad
ul Hassan, Hamad
Kuntz, Matthias
Schäfer, Benjamin J.
Sonnweber-Ribic, Petra
Hartmaier, Alexander
author_sort Sajjad, Hafiz Muhammad
collection PubMed
description The application of instrumented indentation to assess material properties like Young’s modulus and microhardness has become a standard method. In recent developments, indentation experiments and simulations have been combined to inverse methods, from which further material parameters such as yield strength, work hardening rate, and tensile strength can be determined. In this work, an inverse method is introduced by which material parameters for cyclic plasticity, i.e., kinematic hardening parameters, can be determined. To accomplish this, cyclic Vickers indentation experiments are combined with finite element simulations of the indentation with unknown material properties, which are then determined by inverse analysis. To validate the proposed method, these parameters are subsequently applied to predict the uniaxial stress–strain response of a material with success. The method has been validated successfully for a quenched and tempered martensitic steel and for technically pure copper, where an excellent agreement between measured and predicted cyclic stress–strain curves has been achieved. Hence, the proposed inverse method based on cyclic nanoindentation, as a quasi-nondestructive method, could complement or even substitute the resource-intensive conventional fatigue testing in the future for some applications.
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spelling pubmed-74122202020-08-17 Inverse Method to Determine Fatigue Properties of Materials by Combining Cyclic Indentation and Numerical Simulation Sajjad, Hafiz Muhammad ul Hassan, Hamad Kuntz, Matthias Schäfer, Benjamin J. Sonnweber-Ribic, Petra Hartmaier, Alexander Materials (Basel) Article The application of instrumented indentation to assess material properties like Young’s modulus and microhardness has become a standard method. In recent developments, indentation experiments and simulations have been combined to inverse methods, from which further material parameters such as yield strength, work hardening rate, and tensile strength can be determined. In this work, an inverse method is introduced by which material parameters for cyclic plasticity, i.e., kinematic hardening parameters, can be determined. To accomplish this, cyclic Vickers indentation experiments are combined with finite element simulations of the indentation with unknown material properties, which are then determined by inverse analysis. To validate the proposed method, these parameters are subsequently applied to predict the uniaxial stress–strain response of a material with success. The method has been validated successfully for a quenched and tempered martensitic steel and for technically pure copper, where an excellent agreement between measured and predicted cyclic stress–strain curves has been achieved. Hence, the proposed inverse method based on cyclic nanoindentation, as a quasi-nondestructive method, could complement or even substitute the resource-intensive conventional fatigue testing in the future for some applications. MDPI 2020-07-13 /pmc/articles/PMC7412220/ /pubmed/32668811 http://dx.doi.org/10.3390/ma13143126 Text en © 2020 by the authors. 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/).
spellingShingle Article
Sajjad, Hafiz Muhammad
ul Hassan, Hamad
Kuntz, Matthias
Schäfer, Benjamin J.
Sonnweber-Ribic, Petra
Hartmaier, Alexander
Inverse Method to Determine Fatigue Properties of Materials by Combining Cyclic Indentation and Numerical Simulation
title Inverse Method to Determine Fatigue Properties of Materials by Combining Cyclic Indentation and Numerical Simulation
title_full Inverse Method to Determine Fatigue Properties of Materials by Combining Cyclic Indentation and Numerical Simulation
title_fullStr Inverse Method to Determine Fatigue Properties of Materials by Combining Cyclic Indentation and Numerical Simulation
title_full_unstemmed Inverse Method to Determine Fatigue Properties of Materials by Combining Cyclic Indentation and Numerical Simulation
title_short Inverse Method to Determine Fatigue Properties of Materials by Combining Cyclic Indentation and Numerical Simulation
title_sort inverse method to determine fatigue properties of materials by combining cyclic indentation and numerical simulation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7412220/
https://www.ncbi.nlm.nih.gov/pubmed/32668811
http://dx.doi.org/10.3390/ma13143126
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