Profilometry-based indentation plastometry (PIP) integrated finite element (FE) model validation using neutron diffraction

Gaurav Vithalani; Stuart Bell; Rezwanul Haque; Edmund Pickering; Mark  Reid; Geoffrey Will; Richard E. Clegg; Theodore A. Steinberg

doi:10.1016/j.finel.2025.104400

$Profilometry-based indentation plastometry (PIP) integrated finite element (FE) model validation using neutron diffraction$

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Profilometry-based indentation plastometry (PIP) integrated finite element (FE) model validation using neutron diffraction

Gaurav Vithalani, Stuart Bell, Rezwanul Haque, Edmund Pickering, Mark Reid, Geoffrey Will, Richard E. Clegg and Theodore A. Steinberg

Finite Elements in Analysis and Design, Vol.250, pp.1-11

2025

DOI: https://doi.org/10.1016/j.finel.2025.104400

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Abstract

Modified Turski (MT) specimen

residual stress

Finite element analysis (FEA)

profilometry-based indentation plastometry (PIP)

neutron diffraction (ND)

Stress assisted corrosion can lead to premature failure of structural alloys such as stainless steel 316. The mechanisms governing the various failure modes are poorly understood due to the complexities involved in testing the combined effects of stress and corrosion at high temperatures. Modified Turski (MT) specimens are an invaluable tool for studying these mechanisms as they can be pre-stressed to induce residual stresses and exposed to a corrosive environment without needing specialised equipment. However, it is challenging to measure the stresses experimentally without altering the stress state. To overcome this, finite element (FE) modelling can be used, but validated models are scarce, particularly for MT specimen geometry. In this work, an FE model was developed based on the non-destructive characterisation of material using profilometry-based indentation Plastometry (PIP) and validated for residual stresses using enhanced neutron diffraction (ND) measurement. The model results showed significant correlations with experimentally observed deflection and residual stress profile. The deviation observed between the model and experiment was analysed and discussed to understand the evolution of strain field in materials. To conclude, this validated model, and approach is reliable and enables rapid material compatibility assessment for stress assisted corrosion, which is particularly important in emerging industries like concentrated solar thermal (CST) and hydrogen energy, amongst many others.

Details

Title: Profilometry-based indentation plastometry (PIP) integrated finite element (FE) model validation using neutron diffraction
Authors: Gaurav Vithalani (Corresponding Author) - Queensland University of Technology
Stuart Bell - Queensland University of Technology
Rezwanul Haque - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Edmund Pickering - Queensland University of Technology
Mark Reid - Australian Nuclear Science and Technology Organisation
Geoffrey Will - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Richard E. Clegg - Queensland University of Technology
Theodore A. Steinberg - Queensland University of Technology
Publication details: Finite Elements in Analysis and Design, Vol.250, pp.1-11
Publisher: Elsevier BV
Date published: 2025
DOI: 10.1016/j.finel.2025.104400
ISSN: 1872-6925; 0168-874X
Data Availability: Data will be made available on request.
Grant note: The authors acknowledge AINSE for awarding grant no. P 16362 to carry out neutron diffraction (Kowari) studies at ANSTO.
Organisation Unit: School of Science, Technology and Engineering
Language: English
Record Identifier: 991132706102621
Output Type: Journal article

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