RESEARCH PAPER
Non-invasive and reliable approach for stiffness characterisation of 3D-printed plates
1
Department of Structural Mechanics, Koszalin University of Technology, Poland
2
Department of Applied Mathematics, Ivan Franko National University of Lviv, Ukraine
3
Institute of Materials and Structures, Riga Technical University, Latvia
Submission date: 2025-02-17
Final revision date: 2025-04-24
Acceptance date: 2025-06-11
Online publication date: 2025-06-29
Publication date: 2025-06-29
Corresponding author
Mirosław Wesołowski
Department of Structural Mechanics, Koszalin University of Technology, ul. Śniadeckich 2, 75-453, Koszalin, Poland
Department of Structural Mechanics, Koszalin University of Technology, ul. Śniadeckich 2, 75-453, Koszalin, Poland
Eksploatacja i Niezawodność – Maintenance and Reliability 2026;28(1):207016
HIGHLIGHTS
- CLPT effectively models 3D-printed multi-layered plate behavior.
- Contactless vibration analysis was conducted using a laser vibrometer.
- Validated FEM predictions align closely with experimental results.
- Inverse technique identifies 3D-printed plate stiffnesses non-invasively.
KEYWORDS
TOPICS
ABSTRACT
The additive manufacturing (3D printing) process of plates closely resembles the production of laminated composites. Both structures can be treated as multi-layered composites, where each layer may have distinct mechanical properties while forming an integrated structure. This study employs a non-destructive inverse technique based on dynamic tests to characterize the engineering constants (elastic parameters) of an individual printed layer. By using non-invasive experimental vibration tests (optical sensing), numerical modelling, and direct optimization processes, the engineering constants (elastic parameters) of an individual printed layer of a 3D-printed plate are identified. The results are validated by predicting and measuring the dynamic response of a different plate with a new stacking sequence. The findings demonstrate that Classical Laminated Plate Theory (CLPT) can predict the linear dynamic response of 3D-printed plates. The inverse technique is shown to be a robust and reliable method for determining the engineering constants of individual layers in a 3D-printed plate.
ACKNOWLEDGEMENTS
The current research has been supported by Polish National Agency for Academic Exchange (NAWA) under project “EU4DUAL4Ukraine”. no. BNI-UE-2023-5. The article was co-financed from the state budget of Poland and awarded by the Minister of Science within the framework of the Excellent Science II Programme.
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