Feasibility of Magnetic Particle Films for Curie Temperature-Controlled Processing of Composite Materials PDF Download
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Author: Eric D. Wetzel Publisher: ISBN: 9781423531173 Category : Composite materials Languages : en Pages : 83
Book Description
The feasibility of using magnetic particulate susceptor materials for induction heating during bonding of polymer matrix composite materials is investigated. If properly designed, these systems should rapidly heat to the particulate material Curie temperature and dwell at that temperature without feedback control. This performance is only possible by maximizing hysteresis heating while eliminating eddy current heating and shielding effects. Models of eddy current heating, hysteresis heating, field penetration thickness, and heat transfer in a particulate film are presented. These models are then used to predict heating behavior of particulate films containing metallic ferromagnetic (nickel), hard magnetic (strontium ferrite), and soft magnetic (nickel zinc ferrite) materials. The results show that soft or semi-hard insulating magnetic materials are best suited for susceptor particles for a broad range of potential military applications. Polymer films with around 10% volume fraction of these materials should be capable of heating rates up to 100 deg C/s in moderate strength 1-10 MHz induction fields.
Author: Eric D. Wetzel Publisher: ISBN: 9781423531173 Category : Composite materials Languages : en Pages : 83
Book Description
The feasibility of using magnetic particulate susceptor materials for induction heating during bonding of polymer matrix composite materials is investigated. If properly designed, these systems should rapidly heat to the particulate material Curie temperature and dwell at that temperature without feedback control. This performance is only possible by maximizing hysteresis heating while eliminating eddy current heating and shielding effects. Models of eddy current heating, hysteresis heating, field penetration thickness, and heat transfer in a particulate film are presented. These models are then used to predict heating behavior of particulate films containing metallic ferromagnetic (nickel), hard magnetic (strontium ferrite), and soft magnetic (nickel zinc ferrite) materials. The results show that soft or semi-hard insulating magnetic materials are best suited for susceptor particles for a broad range of potential military applications. Polymer films with around 10% volume fraction of these materials should be capable of heating rates up to 100 deg C/s in moderate strength 1-10 MHz induction fields.
Author: Mirza I. Bichurin Publisher: CRC Press ISBN: 0429949618 Category : Science Languages : en Pages : 280
Book Description
This book is dedicated to modeling and application of magnetoelectric (ME) effects in layered and bulk composites based on magnetostrictive and piezoelectric materials. Currently, numerous theoretical and experimental studies on ME composites are available but few on the development and research of instruments based on them. So far, only investigation of ME magnetic field sensors has been cited in the existing literature. However, these studies have finally resulted in the creation of low-frequency ME magnetic field sensors with parameters substantially exceeding the characteristics of Hall sensors. The book presents the authors’ many years of experience gained in ME composites and through creation of device models based on their studies. It describes low-frequency ME devices, such as current and position sensors and energy harvesters, and microwave ME devices, such as antennas, attenuators, filters, gyrators, and phase shifters.
Author: Alper Erturk Publisher: John Wiley & Sons ISBN: 1119991358 Category : Technology & Engineering Languages : en Pages : 377
Book Description
The transformation of vibrations into electric energy through the use of piezoelectric devices is an exciting and rapidly developing area of research with a widening range of applications constantly materialising. With Piezoelectric Energy Harvesting, world-leading researchers provide a timely and comprehensive coverage of the electromechanical modelling and applications of piezoelectric energy harvesters. They present principal modelling approaches, synthesizing fundamental material related to mechanical, aerospace, civil, electrical and materials engineering disciplines for vibration-based energy harvesting using piezoelectric transduction. Piezoelectric Energy Harvesting provides the first comprehensive treatment of distributed-parameter electromechanical modelling for piezoelectric energy harvesting with extensive case studies including experimental validations, and is the first book to address modelling of various forms of excitation in piezoelectric energy harvesting, ranging from airflow excitation to moving loads, thus ensuring its relevance to engineers in fields as disparate as aerospace engineering and civil engineering. Coverage includes: Analytical and approximate analytical distributed-parameter electromechanical models with illustrative theoretical case studies as well as extensive experimental validations Several problems of piezoelectric energy harvesting ranging from simple harmonic excitation to random vibrations Details of introducing and modelling piezoelectric coupling for various problems Modelling and exploiting nonlinear dynamics for performance enhancement, supported with experimental verifications Applications ranging from moving load excitation of slender bridges to airflow excitation of aeroelastic sections A review of standard nonlinear energy harvesting circuits with modelling aspects.
Author: Eric D. Wetzel
Author: Eric D. Wetzel
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Author: Mirza I. Bichurin
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Author: Alper Erturk
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