Next Article in Journal
Experimental Investigation of Reinforced Concrete Beam with Openings Strengthened Using FRP Sheets under Cyclic Load
Next Article in Special Issue
Addressing H-Material Interaction in Fast Diffusion Materials—A Feasibility Study on a Complex Phase Steel
Previous Article in Journal
Acid and Sulphate Attacks on a Rubberized Engineered Cementitious Composite Containing Graphene Oxide
Open AccessArticle

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

1
Interdisciplinary Centre for Advanced Material Simulation (ICAMS), Ruhr-Universität Bochum, Universitätsstr 150, 44801 Bochum, Germany
2
Robert Bosch GmbH—Corporate Sector Research and Advance Engineering, 71272 Renningen, Germany
*
Author to whom correspondence should be addressed.
Materials 2020, 13(14), 3126; https://doi.org/10.3390/ma13143126
Received: 3 June 2020 / Revised: 3 July 2020 / Accepted: 8 July 2020 / Published: 13 July 2020
(This article belongs to the Special Issue Recent Advances in Mechanisms of Fracture and Fatigue)
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. View Full-Text
Keywords: cyclic indentation; Vickers hardness; inverse analysis; numerical simulations; cyclic material properties; fatigue life cyclic indentation; Vickers hardness; inverse analysis; numerical simulations; cyclic material properties; fatigue life
Show Figures

Graphical abstract

MDPI and ACS Style

Sajjad, H.M.; ul Hassan, H.; Kuntz, M.; Schäfer, B.J.; Sonnweber-Ribic, P.; Hartmaier, A. Inverse Method to Determine Fatigue Properties of Materials by Combining Cyclic Indentation and Numerical Simulation. Materials 2020, 13, 3126. https://doi.org/10.3390/ma13143126

AMA Style

Sajjad HM, ul Hassan H, Kuntz M, Schäfer BJ, Sonnweber-Ribic P, Hartmaier A. Inverse Method to Determine Fatigue Properties of Materials by Combining Cyclic Indentation and Numerical Simulation. Materials. 2020; 13(14):3126. https://doi.org/10.3390/ma13143126

Chicago/Turabian Style

Sajjad, Hafiz M.; ul Hassan, Hamad; Kuntz, Matthias; Schäfer, Benjamin J.; Sonnweber-Ribic, Petra; Hartmaier, Alexander. 2020. "Inverse Method to Determine Fatigue Properties of Materials by Combining Cyclic Indentation and Numerical Simulation" Materials 13, no. 14: 3126. https://doi.org/10.3390/ma13143126

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop