Effect of mechanical fastener induced pre-stress on power efficiency of soft PZT energy harvesters. (25th January 2020)

• Record Type: Journal Article
• Authors: Nall, George; Gamboa, Bryan; Estrada, Maximilian; Guo, Ruyan; Bhalla, Amar S.
• Is Part Of: Ferroelectrics. Volume 555(2020)
• Page Start: 124
• Page End: 131
• Publication Date: 2020-01-25
• Subjects: Stress bias -- piezoelectric energy harvesting -- soft PZT; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2019.1691390
• Languages: English
• ISSNs: 0015-0193

Abstract

Abstract: Experiments to determine the effects of mechanical fastener induced pre-stress on a piezoelectric energy harvester (PEH) were conducted. Using a mechanical pre-stress fixture and an electro-dynamic MTS material tester, experiments conducted on soft-PZT showed that are optimized PEH by modulating the magnitude of pre-stress induced on the soft-PZT. Experiments also showed that by adjusting the number of mechanical fasteners used to induce the pre-stress, the energy harvesting capabilities of a PEH may be further optimized.