This work presents the study of a reproducible acoustic emission method based on the launching of a metallic sphere and low-cost piezoelectric diaphragm. For this purpose, tests were first conducted on a carbon fiber-reinforced polymer structure, and then on an aluminum structure for comparative analysis. The pencil-lead break (PLB) tests were also conducted for comparisons with the proposed method. Different launching heights and elastic deformations of the structures were investigated. The results show higher repeatability for the sphere impact method, as the PLB is more affected by human inaccuracy, and it was also effective in damage detection.
A Proposed Non-Destructive Method Based on Sphere Launching and Piezoelectric Diaphragm / Junior, C. S.; Aguiar, P. R.; D'Addona, D. M.; Junior, P. O. C.; Junior, R. G. O.. - In: SENSORS. - ISSN 1424-8220. - 24:18(2024). [10.3390/s24185874]
A Proposed Non-Destructive Method Based on Sphere Launching and Piezoelectric Diaphragm
D'Addona D. M.Methodology
;
2024
Abstract
This work presents the study of a reproducible acoustic emission method based on the launching of a metallic sphere and low-cost piezoelectric diaphragm. For this purpose, tests were first conducted on a carbon fiber-reinforced polymer structure, and then on an aluminum structure for comparative analysis. The pencil-lead break (PLB) tests were also conducted for comparisons with the proposed method. Different launching heights and elastic deformations of the structures were investigated. The results show higher repeatability for the sphere impact method, as the PLB is more affected by human inaccuracy, and it was also effective in damage detection.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
