Article
Automation & Control Systems
Andrew Keller, Braden Robinson, Alejandro Draper, Amanda White, Joshua Daw, Zhangxian Deng
Summary: Real-time and reliable temperature measurement on nuclear fuels is crucial for the safe operation of reactors. This study developed an ultrasonic thermometer using magnetostrictive materials, which can detect nuclear fuel cladding temperature from a long distance. The Galfenol-based UT outperforms previous UTs based on iron-cobalt-vanadium alloys.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2022)
Article
Materials Science, Multidisciplinary
U. Ahmed, D. Blazevic, Y. Mizukawa, U. Aydin, P. Rasilo
Summary: This paper presents the validation of a thermodynamic magneto-mechanical model for analyzing a galfenol based cantilever beam type energy harvesting device. The results show that the model is effective for analyzing beam-type devices and discusses the influence of magnetostriction on resonant frequency. The model accurately predicts resonant frequency with a relative error of less than 2% and reasonably determines open circuit voltage, with some discrepancies at large vibration amplitudes.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Shaoyang Gao, Ling Weng, Zhangxian Deng, Bowen Wang, Wenmei Huang
Summary: A novel biomimetic magnetostrictive tactile sensor was developed in this study, with stable static sensitivity and fast response time. The sensor array constructed from multiple sensors showed capability in detecting the geometry of objects in contact.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Gaofeng Sha, Cliff J. Lissenden
Summary: Ultrasonic guided waves can be used for structural health monitoring of plate-like structures by interacting with SH waves and Lamb waves. Magnetostrictive transducers show potential for generating and receiving these waves, with simulations helping to optimize their characteristics for various applications. Increasing the number of turns in the meander coil can enhance sensitivity and reduce frequency bandwidth for the MST as a receiver.
Article
Chemistry, Physical
Mohammad Tauhidul Islam, Devika Nandwana, Jonathan Healy, Jenna K. Jaklich, Bowen Dong, Alexander Yu, Emily E. Moore, Yumi Ijiri, Scott K. McCall, Matthew A. Willard
Summary: (Fe1-xGax)92Zr8 amorphous and nanocrystalline alloys with x = 0.15 to x = 0.36 were investigated to improve the magnetic softness of Galfenol-type alloys and evaluate their magnetostrictive properties. It was found that annealing the rapidly solidified ribbons at 823 K for 1 h produced a nanocrystalline structure with body-centered cubic (BCC) Fe-Ga phase crystallization for x = 0.15 to x = 0.26. Beyond x = 0.26, the ribbons crystallized into BCC and a ternary intermetallic phase (ZrFe6Ga6) that negatively affected saturation magnetization, magnetic softness, and magnetostriction coefficient. The alloy with x = 0.26 annealed at 823 K for 1 h exhibited a peak magnetostriction of 10 ppm with saturation magnetization of 110 Am2/kg and coercivity of 260 A/m.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Multidisciplinary
Markus Mehnert, William Oates, Paul Steinmann
Summary: When molecular photo-switches are embedded into a soft polymer matrix, they can undergo mechanical deformation induced by specific wavelength light. These photo-sensitive compounds have potential applications as soft actuators, especially in micro-scale robots and high-speed data transfer. However, the industrial applications of photo-sensitive polymers have been limited. This study presents a photo-mechanical modeling approach using constitutive equations and numerical simulation methods to increase the acceptance of these materials.
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
(2023)
Article
Mechanics
Ziwei Li, Junjie Ye, Yiwei Wang, Lu Liu, Yang Shi, Yang Li, Jianqiao Ye
Summary: In this paper, a novel micromechanical modeling framework is proposed to study the mechanical properties of a multiphase magnetostrictive composite under a multi-field coupling environment. A nonlinear constitutive equation considering mechanical-magneto-thermal condition is presented. The material's representative volume element (RVE) is discretized using parametric elements to obtain local stress distribution. The macroscopic strain responses under magnetic field loading are predicted using the homogenization technique and considering local equilibrium. The numerical results are compared with experimental data.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Civil
Haowen Hou, Wei Wang, Shiye Wang
Summary: This paper provides both continuum finite element (CFE) modeling and fiber-based modeling methods for the nonlinear cyclic analyses of double-skin composite walls (DSCWs). The models are validated by experimental results, achieving good agreement. Two modification methods for the enhancement of confining effect due to interactional constraints of concrete in continuous multi-cavities are proposed. The reliability of the RSMM parameters that control the buckling and fracture of steel fibers is verified.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Electrical & Electronic
Huiwen Yang, Ling Weng, Bowen Wang, Wenmei Huang
Summary: A high-sensitivity magnetostrictive tactile sensor array is designed to enable intelligent robots to have a sensitive sense of touch and perform delicate operations. The sensor's output characteristics and sensitivity are tested, showing high accuracy and sensitivity compared to other types of tactile sensors. The array configuration and coupling effect of the sensor units are investigated, and the sensor array is applied to object grasping tasks.
IEEE SENSORS JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Shahed Mirzamohamadi, Mohamad Morad Sheikhi, Mohamad Reza Karafi, Mojtaba Ghodsi, Shahryar Ghorbanirezaei
Summary: This paper presents a novel Contactless Hybrid Static Magnetostrictive Force-Torque (CHSMFT) sensor using Galfenol. The design principles, material properties, and performance evaluation of the sensor are described in detail. The experimental results show that the sensor has good sensitivity and precision under optimal conditions.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
M. Haghparast, M. M. Tehranchi, S. M. Hamidi
Summary: Ultrasensitive magnetic field sensors based on magnetoelectric (ME) structures can be used in various applications such as bio-magnetic sensors and magnetoencephalography (MEG) scanners. To achieve enhanced sensitivity, detection limit, and main frequency, accurate simulation methods like finite element method (FEM) are employed. A cantilever-type composite structure composed of galfenol alloy as a magnetostrictive layer and AlN as a piezoelectric layer is used to obtain optimal sensitivity and efficiency. The simulated sensor can measure AC magnetic field with a field resolution of 1 pT, while performing best at a bias DC magnetic field of 2.3 mT and resonance frequency of 2521.8 Hz, with a magnetoelectric coefficient of 4865 (V/cm.Oe).
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Instruments & Instrumentation
Huifang Liu, Weiwei Dong, Yunlong Chang, Yifei Gao, Wencheng Li
Summary: This paper investigates the use of an iron-gallium alloy as the core material in a device to harvest rotational vibration energy. Experiments are conducted to study the influence of key factors on the harvesting capability of the device, and the output patterns of the harvester under different excitation conditions are analyzed. The correlation between the deformation of the cantilever beam and harvester performance is also investigated.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Engineering, Civil
Haoran Ji, Dongxu Li
Summary: This paper proposes a new nonlinear finite element method based on continuum mechanics, which can be applied to structural analysis of modern spacecraft with accuracy and universality. Simulations confirm that this method can effectively solve structural motion under large deformation scenarios.
THIN-WALLED STRUCTURES
(2021)
Article
Acoustics
Mustafa Yunus Kaya, Sedat Alkoy
Summary: In this study, a novel class V flextensional transducer (FT) was developed by assembling symmetrically convex ceramic and metal caps to form a seashell-like structure. The transducer displayed four distinct flextensional modes in addition to the main radial resonance mode in the frequency range of 1 to 200 kHz. Prototypical devices made from different lead zirconate titanate (PZT) compositions were compared in terms of underwater performance, and transmitting voltage responses (TVRs) above 50 kHz ranged between 120 and 135 dB (ref 1 mu Pa/V).
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2023)
Article
Engineering, Aerospace
Shaochong Yang, Yuan Yao, Youchen Li, Lianhua Ma, Ying Zhang, Qingsheng Yang
Summary: The study investigates the geometrically nonlinear random vibration response of stiffened laminated plates under acoustic excitation using the equivalent linearization technique combined with reduced-order model and finite element method. An EL formulation for solving nonlinear random vibration response is derived based on the force error minimization approach. The proposed method shows high accuracy and efficiency in analyzing the geometric nonlinear random vibration response of stiffened laminated plates.
