Analysis of geometry simplification in frequency-resonance method for non-destructive assessment of stem

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F22%3A43922520" target="_blank" >RIV/62156489:43410/22:43922520 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Analysis of geometry simplification in frequency-resonance method for non-destructive assessment of stem
Original language description
The application of the frequency-resonance method (FRM) on stems is limited by complex geometry. This paper presents the relationship among non-destructively tested material parameters of sugar maples and the numerical analysis of the effect of simplifications in FRM. Four standing stems were 3D scanned to describe the geometry, tested by pulling test to obtain moduli of elasticity (MOE) and cut down to process stem samples. Samples were measured by stress wave propagation using an acoustic tomography to measure sound velocities and evaluated by the FRM to record bending and longitudinal natural frequencies to calculate dynamic MOE; MOE based on different methods were compared. Finite Element Modal analysis working at three levels of geometry simplification (beam, simplified solid, and scan-based solid) was performed. The natural frequencies in bending and longitudinal mode shapes were computed, and the influence of geometry simplification on the resulting frequency response was described.
Czech name
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Czech description
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Project
<a href="/en/project/LL1909" target="_blank" >LL1909: Tree Dynamics: Understanding of Mechanical Response to Loading</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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