A novel magnetostrictive torsional resonant transducer

Mohammad Reza Karafi, Yousef Hojjat, Farrokh Sassani, Mojtaba Ghodsi

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

In this paper, a novel actuator called Magnetostrictive Torsional Resonant Transducer (MTRT) is introduced. The transducer is composed of a magnetostrictive horn, a stainless steel backing and a housing. In this transducer a spiral magnetic field, made up of longitudinal and circumferential components, is applied to the magnetostrictive horn. As a result, the magnetostrictive horn oscillates torsionally based on the Wiedemann effect. The magnetostrictive horn is made up of "2V permendur", which has isotropic magnetic properties. The magnetomechanical differential equation of the MTRT is derived, and a transducer is designed for a resonant frequency of 12,075 Hz. Natural frequency and mode shape of the transducer are considered theoretically, numerically, and experimentally. The effects of axial and circumferential magnetic fields on torsional displacement of the MTRT are investigated experimentally. The experimental results show that this transducer resonates at the frequency of 12,325 Hz, while the maximum torsional displacement of the tip of the transducer is 1.2 mrad. These are promising features for industrial applications.

Original languageEnglish
Pages (from-to)71-78
Number of pages8
JournalSensors and Actuators, A: Physical
Volume195
DOIs
Publication statusPublished - 2013

Fingerprint

Transducers
transducers
resonant frequencies
Natural frequencies
Magnetic fields
backups
modal response
Stainless Steel
magnetic fields
Industrial applications
stainless steels
Magnetic properties
Differential equations
differential equations
Actuators
Stainless steel
actuators
magnetic properties

Keywords

  • Magnetostrictive
  • Permendur
  • Torsional transducer
  • Wiedemann effect

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Instrumentation

Cite this

A novel magnetostrictive torsional resonant transducer. / Karafi, Mohammad Reza; Hojjat, Yousef; Sassani, Farrokh; Ghodsi, Mojtaba.

In: Sensors and Actuators, A: Physical, Vol. 195, 2013, p. 71-78.

Research output: Contribution to journalArticle

Karafi, Mohammad Reza ; Hojjat, Yousef ; Sassani, Farrokh ; Ghodsi, Mojtaba. / A novel magnetostrictive torsional resonant transducer. In: Sensors and Actuators, A: Physical. 2013 ; Vol. 195. pp. 71-78.
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