Results 1 to 10 of about 206,554 (312)

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

The Analysis of Multivariate Longitudinal Data: An Instructive Application of the Longitudinal Three-Mode Model [PDF]

open access: yesMultivariate Behavioral Research, 2019
Structural equation modeling is a common technique to assess change in longitudinal designs. However, these models can become of unmanageable size with many measurement occasions. One solution is the imposition of Kronecker product restrictions to model the multivariate longitudinal structure of the data.
Mathilde G E Verdam, Frans J Oort
exaly   +5 more sources

A Resonantly Pumped Single-Longitudinal Mode Ho:Sc2SiO5 Laser with Two Fabry–Perot Etalons

open access: yesApplied Sciences, 2017
We present a single-longitudinal-mode Ho:Sc2SiO5 (Ho:SSO) laser pumped by a Tm:YAP laser for the first time. Two intra-cavity Fabry–Perot etalons were used to realize the single-longitudinal mode of operation.
Xiao-Tao Yang   +3 more
doaj   +3 more sources

Neural Network Sliding Mode Control of Intelligent Vehicle Longitudinal Dynamics

open access: yesIEEE Access, 2019
Longitudinal dynamics control is the basis for autonomous driving of intelligent vehicles, which have great significance to the development of intelligent transportation system (ITS).
Shaohua Wang   +3 more
doaj   +3 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

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