{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T03:26:10Z","timestamp":1773113170470,"version":"3.50.1"},"posted":{"date-parts":[[2026]]},"group-title":"SSRN","reference-count":0,"publisher":"Elsevier BV","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>This study presents a statistical characterization of the piezoelectric response in Thermoformed Magneto-Piezoelectret Sensors (TMPs) under varying excitation frequencies. A 144-point Laser-Doppler vibrometry mapping was performed to evaluate the spatial distribution of the piezoelectric coefficient d33 in structurally distinct regions, namely, air-filled channels and solid valleys. Statistical metrics, including mean, standard deviation, coefficient of variation, and interquartile range, were used to evaluate the functional variability and stability of the sensors at 50 Hz, 5.8 kHz, 12 kHz and 20 kHz. The results revealed consistently higher d33 values and greater dispersion in the channel regions, while the valleys exhibited lower variability and more stable response. Frequency-dependent patterns of asymmetry and localized amplification were observed, indicating the combined influence of geometry and excitation regime on electromechanical behavior, which may also suggest the effect of the presence of local mode shapes of the polymeric structure of the TMP. This multivariate statistical approach provides valuable information on design refinement, spatial calibration strategies, and quality control for advanced piezoelectret-based devices. The findings support the development of high-sensitivity geometrically optimized transducers for use in multifunctional sensing applications.<\/jats:p>","DOI":"10.2139\/ssrn.6378568","type":"posted-content","created":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T15:15:59Z","timestamp":1773069359000},"source":"Crossref","is-referenced-by-count":0,"title":["Statistical Characterization of Piezoelectric Response in Thermoformed Magneto-Piezoelectret Sensors"],"prefix":"10.2139","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-0004-1332","authenticated-orcid":true,"given":"Leonardo","family":"Caires","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5328-1705","authenticated-orcid":true,"given":"Rui  Antonio","family":"Moreira","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4724-9252","authenticated-orcid":true,"given":"Polyane","family":"Santos","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0009-0006-5830-1537","authenticated-orcid":true,"given":"Ronaldo","family":"Lima","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0009-0002-8695-1079","authenticated-orcid":true,"given":"Elvio","family":"Silva","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5758-5578","authenticated-orcid":true,"given":"Am\u00e9lia","family":"Santos","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0054-0771","authenticated-orcid":true,"given":"S\u00e9rgio","family":"Oliveira Tavares","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6776-9824","authenticated-orcid":true,"given":"Ruy  A.P.","family":"Altafim","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2248-9305","authenticated-orcid":true,"given":"Ruy  A.C.","family":"Altafim","sequence":"additional","affiliation":[]}],"member":"78","container-title":[],"original-title":[],"deposited":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T15:15:59Z","timestamp":1773069359000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ssrn.com\/abstract=6378568"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026]]},"references-count":0,"URL":"https:\/\/doi.org\/10.2139\/ssrn.6378568","relation":{},"subject":[],"published":{"date-parts":[[2026]]},"subtype":"preprint"}}