English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Vibrational energy harvested from the bridge excitation due to the trafficflow or the wind load can be supplied to sensors in a Structural HealthMonitoring (SHM) system and help prolong its service life, reduce chemicalbattery waste and enable its use in remote locations. A common approach todesigning a Piezoelectric Energy Harvester (PEH) consists in tuning itsfundamental frequency to some target value (e.g., the fundamental frequency ofa bridge). However, such approach does not answer the question if the chosentarget frequency is optimal, and does not take into account the possibility tohave multiple design configurations with the same fundamental frequency. Inthis work, we approach the problem of a PEH design optimisation in a rigorousway, using a PEH model based on the Kirchhoff-Love plate theory andIsogeometric Analysis (IGA), coupled with the Modal Order Reduction (MOR)approach and Runge-Kutta time integration method. The model is further equippedwith the Particle Swarm Optimisation (PSO) algorithm that allows findinggeometry which maximises energy output from a given base acceleration signal. Acomprehensive study is conducted to infer the impact of a PEH geometry on itsenergy harvesting performance in a real-world setting by considering fieldhealth monitoring data of a large-scale cable-stayed bridge in NSW, Australia.A shape optimisation framework is developed based on acceleration events, i.e.,where the level of response exceeds a certain threshold. Designs obtained inthe event-based optimisation are then clustered to propose several bestcandidates for continuous energy generation. This work represents the firststudy on PEH design optimisation for real operational conditions.

Design optimisation of piezoelectric energy harvesters for bridge infrastructure