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2018
Doctoral Thesis
Title
Optimization of a vibration absorber with piezoelectric energy harvesting capabilities
Abstract
Vibration represents a real issue in many engineering fields and the consequences go from discomfort to catastrophic events. To guarantee structural reliability, enhanced comfort and cost savings vibration absorbers have been intensively studied: they reduce the vibration by transferring and dissipating mechanical energy. However, a new trend is rather to convert and not dissipate the energy e.g. converting mechanical-to-electrical energy. Low powered sensors, as those employed for structural health monitoring (SHM), are normally supplied by batteries that require periodic replacement. In the recent years the field of energy harvesting has received great attention: smart materials as piezoelectric transducers can be used for energy conversion to autonomously supply sensors for SHM. This work presents the optimization of a vibration absorber that integrates piezoelectric transducers for energy conversion, bringing together two promising and innovative research areas: vibration reduction and energy harvesting. An integrated device allows for simultaneous improvement of structural reliability and autonomous sensors supply for SHM, playing a fundamental role in modern engineering.
Thesis Note
Zugl.: Darmstadt, TU, Diss., 2018
Language
English
Keyword(s)
mechanical engineering
engines & power transmission
energy harvesting
vibration reduction
rotating system
energy conversion
piezoelectric transducer
Adaptronik
Maschinenbau
Energieumwandlung
Schwingungsreduzierung
rotierendes System
Ingenieur
structural durability
vibration
mechanical-to-electrical
structural health monitoring
smart material
piezoelectric