Results 21 to 30 of about 63,045 (293)
Research on Residual Life Estimation Method for KMN Steel Based on Nonlinear Ultrasonic Testing
Applied Sciences, 2021 The testing of KMN steel bending fatigue with different cycles was carried out using a nonlinear ultrasonic detector to obtain its nonlinear coefficient. The experimental results show that the nonlinear coefficient first increases and then decreases with
Pengfei Wang +3 more
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Nonlinear Ultrasonic Phased Array Imaging [PDF]
Physical Review Letters, 2014 This Letter reports a technique for the imaging of acoustic nonlinearity. By contrasting the energy of the diffuse field produced through the focusing of an ultrasonic array by delayed parallel element transmission with that produced by postprocessing of sequential transmission data, acoustic nonlinearity local to the focal point is measured. Spatially
Potter, J. N. +2 more
openaire +3 more sources
Characterization of Nonlinear Ultrasonic Diffuse Energy Imaging [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2018 Nonlinear ultrasonic diffuse energy imaging is a highly sensitive method for the measurement of elastic nonlinearity. While the underlying principles that govern the technique are understood, the precise behavior and sensitivity have not previously been quantified. This paper presents experimental, theoretical, and numerical modeling studies undertaken
Jack Potter, Anthony J. Croxford
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Research on Fatigue Damage in High-Strength Steel (FV520B) Using Nonlinear Ultrasonic Testing
Shock and Vibration, 2020 In view of the early fatigue damage of high-strength steel FV520B, a nonlinear ultrasonic detection was performed on two types of fatigue samples using nonlinear Lamb waves.
Bingbing Chen +4 more
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Results in Physics, 2023 In order to investigate the fatigue behavior of carbon fiber composites and the influence of different stress levels on their fatigue damage characteristics, the fatigue experiments of carbon fiber composites under different stress ratios are carried out.
Silong Quan, Yuhua Zhang, Peishan Lin
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Defects Inspection in Wires by Nonlinear Ultrasonic-Guided Wave Generated by Electromagnetic Sensors
Applied Sciences, 2020 Steel wires are widely used as raw materials for spring valves in engines. Considering the quality and safety issues of their structure, there is a demand to develop nondestructive inspection approaches to detect initial damages in steel.
Junpil Park +3 more
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Venting in the comparative study of flexural ultrasonic transducers to improve resilience at elevated environmental pressure levels [PDF]
, 2020 The classical form of a flexural ultrasonic transducer is a piezoelectric ceramic disc bonded to a circular metallic membrane. This ceramic induces vibration modes of the membrane for the generation and detection of ultrasound.
Dixon, Steve M. +3 more
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Nonlinear aspects of ultrasonic heating [PDF]
The Journal of the Acoustical Society of America, 1989 Under appropriate conditions, the absorption of finite amplitude ultrasound is determined largely by source amplitude, field geometry, and the nonlinear properties of the medium and is only weakly dependent upon the small signal absorption coefficient of the material.
E. L. Carstensen +4 more
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Second Harmonic Modulation for Ultrasonic Signals Based on the Design of the Phononic Crystal Filter
Sensors, 2023 Nonlinear ultrasonic non-destructive testing (NDT) is a widely used method for detecting micro-damages in various materials and structures due to its high sensitivity and directional capability.
Yue Zhu, Youxuan Zhao, Peng Cao
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Nuclear Engineering and Technology, 2020 Cast austenitic stainless steel (CASS) is used for fabricating different components of the primary reactor coolant system of pressurized water reactors.
Jongbeom Kim +6 more
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