Detalhes do Artigo
[306915] Metrological approach for Poisson modulus measurement of aluminium samples from longitudinal and transverse ultrasonic velocities
Autores: Ericles William Jesus dos Santos, Mylena Kathleen Mosqueira de Assis, Alex Justen Teixeira, Tiago Costa Dourado, Sandro Aureliano Miqueleti, Rodrigo Pereira Barretto Costa-Félix
Resumo: Destructive tests are widely used in the industry to determine the mechanical properties of materials. However, usually, they are time-consuming, expensive, and can cause damage to the materials. In this context, nondestructive ultrasound tests emerge as a viable alternative to determine mechanical properties without harming the material. The main objective of this study was to determine the Poisson coefficient of aluminium samples using nondestructive ultrasound testing. Additionally, a metrological approach was implemented to assess the quantities, and their respective measurement uncertainty was presented, showing a high confidence level in the results. The study also highlighted the economic viability of nondestructive ultrasound testing, as it does not cause damage to the materials and allows for the evaluation of multiple mechanical properties in a single test, saving time and resources. Furthermore, the test contributes to quality control in the manufacturing and service of materials by detecting flaws and variations in their mechanical properties. In this work, Poisson modulus was determined as 0.3488 and associated with a measurement uncertainty of 0.0133. The results demonstrated that the Poisson modulus determined in this work, following resources ultrasound test, was consistent with literature data and technical standards. Therefore, it is reinforced that nondestructive ultrasound testing is reliable, safe, and efficient in characterising the Poisson modulus, providing compliance and safety in using materials.