Results 1 to 10 of about 828,488 (186)

Research on the Lift-off Effect of Receiving Longitudinal Mode Guided Waves in Pipes Based on the Villari Effect [PDF]

open access: yesSensors, 2016
The magnetostrictive guided wave technology as a non-contact measurement can generate and receive guided waves with a large lift-off distance up to tens of millimeters.
Jiang Xu, Yong Sun, Jinhai Zhou
doaj   +2 more sources

A Longitudinal Mode Electromagnetic Acoustic Transducer (EMAT) Based on a Permanent Magnet Chain for Pipe Inspection [PDF]

open access: yesSensors, 2016
A new electromagnetic acoustic transducer (EMAT) design, employing a special structure of the permanent magnet chain, is proposed to generate and receive longitudinal guided waves for pipe inspection based on the magnetostriction mechanism.
Ming Cong, Xinjun Wu, Chunqiao Qian
doaj   +2 more sources

Longitudinal Mode Number Estimation of External Cavity Diode Laser Using Dual Periodic Grating for Optical Profiler System [PDF]

open access: yesSensors
The concept of an optical profiler based on optical resonance was proposed, highlighting the initial requirements for mode number estimation. We proposed a method for estimating the longitudinal mode number of a laser propagating in an external cavity ...
Masaki Michihata   +3 more
doaj   +2 more sources

Experimental characterization and modeling of a new bulk multi-mode magnetostrictive actuator [PDF]

open access: yesScientific Reports
In this paper, an analytical model of a new bulk magnetostrictive actuator in three modes—longitudinal, bending, and torsional—are examined. The magnetostrictive material considered is a cylindrical vanadium permendur.
Saeed Ansari, Mohammad Reza Karafi
doaj   +2 more sources

Weld Strength of Longitudinal and Longitudinal-Torsional Mode Horns in Ultrasonic Metal Welding [PDF]

open access: yes한국정밀공학회지, 2021
The ultrasonic metal welding technique has been widely used because of the need to weld different materials for meeting high quality performance requirements.
Dong Sam Park, Jin Bom Kim, Ji Won Seo
doaj   +1 more source

Experimental Investigation on the Mode Characteristics of an Excited-State Quantum Dot Laser under Concave Mirror Optical Feedback

open access: yesPhotonics, 2023
In this paper, we experimentally investigated the mode configuration of an excited-state quantum dot laser (ESQDL) under concave mirror optical feedback, and the influences of the feedback strength on the mode characteristics were analyzed.
Yanfei Zheng   +7 more
doaj   +1 more source

Longitudinal Mode System Identification of an Insect-like Tailless Flapping-Wing Micro Air Vehicle Using Onboard Sensors

open access: yesApplied Sciences, 2022
In this paper, model parameter identification results are presented for a longitudinal mode dynamic model of an insect-like tailless flapping-wing micro air vehicle (FWMAV) using angle and angular rate data from onboard sensors only.
Steven Aurecianus   +3 more
doaj   +1 more source

High Q Lateral-Field-Excited Bulk Resonator Based on Single-Crystal LiTaO₃ for 5G Wireless Communication

open access: yesIEEE Journal of the Electron Devices Society, 2021
The paper presents the design and fabrication of lateral-field-excited (LFE) resonators based on 42° Y-cut single-crystal LiTaO3 (LT) on silicon dioxide (SiO2).
Yanmei Xue   +4 more
doaj   +1 more source

Comparison of Longitudinal-Mode and Longitudinal- Torsional Mode Ultrasonic Bone Biopsy Devices [PDF]

open access: yes2018 IEEE International Ultrasonics Symposium (IUS), 2018
Previous research by the authors has demonstrated the efficacy of an ultrasonic bone biopsy device that operates in a longitudinal (L)mode. Ultrasonic longitudinal-torsional (L-T)coupled vibration has proven successful in several applications including ultrasonic surgical devices.
Cleary, Rebecca, Lucas, Margaret
openaire   +1 more source

Longitudinal Composite-Mode Linear Ultrasonic Motor for Motion Servo System of Probe Station

open access: yesActuators, 2020
In order to build a motion system with high resolution, fast response, and long travel range in a probe station, a linear ultrasonic motor was investigated as an alternative to the electromagnetic counterpart in a servo system.
Yin Wang   +4 more
doaj   +1 more source

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