..., focused ultrasonic spherical transducers are used to tightly focus the acoustic waves generated from a piezoelectric material for a wide range of applications in industrial, medical, and other fields. Such transducers have a problem of narrow DOF which restricts the imaging range in depth. In the present...

... component (QSC) of ultrasonic longitudinal waves induced by acoustic radiation. The experiments quantitatively observe the response of the QSC pulse to different levels of aging degradation. A pulse-echo ultrasonic transducer is employed to simultaneously capture the primary longitudinal wave (PLW) and QSC...

... diagnostic approaches Ultrasonics Accepted Manuscript Not Copyedited Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems. Received June 04, 2024; Accepted manuscript posted August 28, 2024. doi:10.1115/1.4066645 Copyright © 2024 by ASME 1 In-situ acoustic emission...

... failure analysis materials testing mechanical engineering online diagnostic approaches sensors service life prediction structural engineering testing methodologies ultrasonics Engineering and Physical Sciences Research Council 10.13039/501100000266 EP/V055577/1 Structural...

...R. Vidya Sagar; Priyan Roy T.; Tribikram Kundu This article reports the observation made during the compressive fracture process of cementitious materials, which has been studied using nonlinear ultrasonic testing (NUT) and acoustic emission (AE) testing techniques. The generated higher harmonics...

...Jee Myung Kim; Kara Peters Fiber Bragg grating sensors have been applied in the remote-bonding configuration for structural health monitoring, in which ultrasonic modes are propagated along the optical fiber to the sensor. Recently, coupling of the ultrasonic mode from optical fiber to optical...

...Joseph S. Cregeen; Rachel S. Edwards Ultrasonic inspection of conductive samples can be performed using electromagnetic acoustic transducers (EMATs). These allow generation of guided waves, such as Lamb waves, in thin plates. Lamb waves are used for defect screening as they can travel long...

...Hossain Ahmed; Asef Sadaf; Sourav Banerjee Methods to quantification of precursor damage in carbon fiber reinforced polymer (CFRP) composite structures are reported herein. These techniques include coda wave interferometry (CWI) and nonlinear ultrasonics (NLU). Since low-frequency Lamb wave...

...N. Pavan Kumar; V. H. Patankar The purpose of this research work is to establish the functionality of the novel ultrasonic non-destructive inspection system and accurate gauging of pipes and to locate and visualize flaws in the form of B-scan cross-sectional view (front-view) of the pipe under test...

.... The datasets generated and supporting the findings of this article are obtainable from the corresponding author upon reasonable request. References [1] Rose , J. L. , 2014 , Ultrasonic Waves in Solid Media , Cambridge University Press , pp. 1 – 512 . [2] Cawley , P. , 2018...

...A. Perrin; C. Gueudré; M. A. Ploix; G. Corneloup; T. J. Ulrich; Luke Beardslee; P. Recolin; C. Payan Ultrasonic measurements are commonly used for crack sizing in the industrial context, but due to potential partial crack closure, the crack depth can be underestimated. It could be of importance...

...Florian Ouvrier-Buffet; Jesús N. Eiras; Vincent Garnier; Benoît Durville; Cédric Payan Nonlinear ultrasonic parameters are known to be highly sensitive to the presence of damage in materials, and numerous methods have already been reported. This study proposes a way to image a nonlinear defect...

...Mingyue Zhang; Luis Waldo Escalona Galvis; Antonino Spada; Margherita Capriotti The nondestructive characterization and monitoring of defects in composite structures by ultrasonic guided waves are hindered by the complexity of the interaction. Efficient computational modeling of propagating...

... introduce an automated nondestructive testing system that scans the part using an immersed ultrasonic array probe guided by a robot arm. For imaging, we adopt a two-step, surface-adaptive Total Focusing Method (TFM) approach. For each test position, the TFM allows us to identify the outer surface, followed...

... feature extraction nonlinear ultrasonic ultrasonics Debonding is very common in stiffened structures due to various reasons such as stress concentration, impact, periodic loading, or manufacturing defects [ 1 , 2 ]. The functionality of the stiffened panel structures may not be compromised...

... Hz. Meanwhile, a 200 kHz ultrasonic excitation was applied on the beam to monitor its propagation through the crack. The closing and opening of the crack generate the nonlinear behavior of the ultrasonic pulse. A considerable increment of nonlinearity was observed demonstrating the efficacy...

... diagnostic feature extraction elastic wave prognosis sensors ultrasonics Office of Naval Research 10.13039/100000006 N00014-21-1-2212 The motivation for this work lies within the aerospace industry. As in-service aircraft begin to age and fatigue, a method for evaluating...

...Steven C. Hespeler; Hamidreza Nemati; Nihar Masurkar; Fernando Alvidrez; Hamidreza Marvi; Ehsan Dehghan-Niri This journal paper explores the application of Deep Learning (DL)-based Time-Series Classification (TSC) algorithms in ultrasonic testing for pipeline inspection. The utility...

... Email: tkundu@arizona.edu acoustic source localization signal energy–based approach carbon fiber–reinforced polymer composite plate sensors acoustic emission elastic wave ultrasonics Acoustic source localization (ASL), i.e., the process of estimating the location of the acoustic...

... of structures made of metallic materials. This article presents a newly developed and promising nonlinear ultrasonic (NLU) technique called sideband peak count- i ndex (or SPC-I) for monitoring the early stages of elastoplastic deformation in ductile metallic alloy Al6061. Experimental results presented...