Design and numerical simulation of novel giant magnetostrictive ultrasonic transducer

Li, Pengyang; Liu, Qiang; Li, Shujuan; Wang, Quandai; Zhang, Dongya; Li, Yan

doi:10.1016/j.rinp.2017.10.010

Cited by 20 publications

(13 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To allow it to be held comfortably by a single hand, the diameter of the GMS actuator was chosen to be 50 mm. After the natural frequency of the GMS actuator and the material properties of components were confirmed, the dimensions of the other parts of the GMS actuator were calculated using the corresponding formulations as reported previously [ 59 ]. Table 1 lists the selected materials and the design size for each part of the GMS actuator.…”

Section: The Design Of the Novel Gms Actuator Systemmentioning

confidence: 99%

Development of a Novel Guided Wave Generation System Using a Giant Magnetostrictive Actuator for Nondestructive Evaluation

Luo

Wang

et al. 2018

Sensors

View full text Add to dashboard Cite

As a common approach to nondestructive testing and evaluation, guided wave-based methods have attracted much attention because of their wide detection range and high detection efficiency. It is highly desirable to develop a portable guided wave testing system with high actuating energy and variable frequency. In this paper, a novel giant magnetostrictive actuator with high actuation power is designed and implemented, based on the giant magnetostrictive (GMS) effect. The novel GMS actuator design involves a conical energy-focusing head that can focus the amplified mechanical energy generated by the GMS actuator. This design enables the generation of stress waves with high energy, and the focusing of the generated stress waves on the test object. The guided wave generation system enables two kinds of output modes: the coded pulse signal and the sweep signal. The functionality and the advantages of the developed system are validated through laboratory testing in the quality assessment of rock bolt-reinforced structures. In addition, the developed GMS actuator and the supporting system are successfully implemented and applied in field tests. The device can also be used in other nondestructive testing and evaluation applications that require high-power stress wave generation.

show abstract

Section: The Design Of the Novel Gms Actuator Systemmentioning

confidence: 99%

Development of a Novel Guided Wave Generation System Using a Giant Magnetostrictive Actuator for Nondestructive Evaluation

Luo

Wang

et al. 2018

Sensors

View full text Add to dashboard Cite

show abstract

“…The magnetostriction effect observed and the behavior of the material when a field is applied differs from one material to another [ 18 , 19 , 20 , 21 ]. As shown in Figure 1 , the magnetostriction curve is symmetric in shape [ 22 , 23 ] and is obtained by slowly varying an externally applied magnetic field to a ferromagnetic specimen and capturing the change in dimensions.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Changes in Magnetic Field and Frequency on the Vibration of a Thin Magnetostrictive Patch as a Tool for Generating Guided Ultrasonic Waves

Zitoun

Dixon

Kazilas

et al. 2022

Sensors

View full text Add to dashboard Cite

A set of experiments was designed and conducted to investigate the vibrational ultrasonic response of a thin magnetostrictive patch bonded to a glass plate, with changes in static and dynamic magnetic fields applied to the patch. Such arrangements are often used as a means of generating guided waves in pipes or plates, by attaching a patch to a sample’s surface. The effect of varying the applied static and dynamic magnetic field’s amplitudes and directions and the frequency of the dynamic magnetic field was studied. It was demonstrated that the vibration of the magnetostrictive patch could be controlled and enhanced by optimizing the magnetic fields. It was also shown that for low-amplitude dynamic magnetic fields, Lorentz forces generated within the patch and the resonant frequency of the patch could also contribute to the enhancement of the vibration of the patch for low-amplitude fields. For high-amplitude dynamic magnetic fields, the magnetostriction effect can be the main transduction mechanism, which can be optimized for non-destructive testing and inspection purposes.

show abstract

“…At room temperature, the magnetostriction values of bulk single-crystal nickel (Ni) along the [100] and [111] crystallographic directions are λ 100 = −46 × 10 −6 and λ 111 = −24 × 10 −6 , respectively 6,11,12 . Although the magnetostrictive coefficients of bulk nickel are not very large compared to other systems, pure nickel is resistant to corrosion, has high electrical and thermal conductivity, and has a high Curie temperature, properties that make it good for protective coatings, heat exchangers, sensors, battery components, and energy harvesting applications 5,[13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Room temperature giant magnetostriction in single-crystal nickel nanowires

et al. 2019

View full text Add to dashboard Cite

Magnetostriction is the emergence of a mechanical deformation induced by an external magnetic field. The conversion of magnetic energy into mechanical energy via magnetostriction at the nanoscale is the basis of many electromechanical systems such as sensors, transducers, actuators, and energy harvesters. However, cryogenic temperatures and large magnetic fields are often required to drive the magnetostriction in such systems, rendering this approach energetically inefficient and impractical for room-temperature device applications. Here, we report the experimental observation of giant magnetostriction in single-crystal nickel nanowires at room temperature. We determined the average values of the magnetostrictive constants of a Ni nanowire from the shifts of the measured diffraction patterns using the 002 and 111 Bragg reflections. At an applied magnetic field of 600 Oe, the magnetostrictive constants have values of λ 100 = −0.161% and λ 111 = −0.067%, two orders of magnitude larger than those in bulk nickel. Using Bragg coherent diffraction imaging (BCDI), we obtained the three-dimensional strain distribution inside the Ni nanowire, revealing nucleation of local strain fields at two different values of the external magnetic field. Our analysis indicates that the enhancement of the magnetostriction coefficients is mainly due to the increases in the shape, surface-induced, and stress-induced anisotropies, which facilitate magnetization along the nanowire axis and increase the total magnetoelastic energy of the system.

show abstract

Design and numerical simulation of novel giant magnetostrictive ultrasonic transducer

Cited by 20 publications

References 18 publications

Development of a Novel Guided Wave Generation System Using a Giant Magnetostrictive Actuator for Nondestructive Evaluation

Development of a Novel Guided Wave Generation System Using a Giant Magnetostrictive Actuator for Nondestructive Evaluation

The Effect of Changes in Magnetic Field and Frequency on the Vibration of a Thin Magnetostrictive Patch as a Tool for Generating Guided Ultrasonic Waves

Room temperature giant magnetostriction in single-crystal nickel nanowires

Contact Info

Product

Resources

About