Results 31 to 40 of about 100,941 (303)
Addressing Non-Uniqueness in Guided Wave Tomography for Limited-View Corrosion Mapping
NDT - Journal of Non-Destructive TestingGuided wave tomography has proven to be an effective method for detecting pipeline corrosion, providing both location and quantitive estimates of wall thickness loss.
Emiel Hassefras +2 more
doaj +1 more source
Q-Compensated Gaussian Beam Migration under the Condition of Irregular Surface
Remote Sensing, 2023 The viscosity of actual underground media can cause amplitude attenuation and phase distortion of seismic waves. When seismic images are processed assuming elastic media, the imaging accuracy for the deep reflective layer is often reduced.
Jianguang Han +3 more
doaj +1 more source
X-ray induced acoustic imaging using a synchrotron [PDF]
, 2021 X-ray induced acoustic (XA) imaging is a promising imaging technique that can identify X-ray absorption contrast with much reduced ionizing radiation.
Kim, Jong Hyun +4 more
core
Wavelet-Based Beamforming for High-Speed Rotating Acoustic Source
IEEE Access, 2018 In this paper, a novel wavelet-based beamforming approach is proposed for sensor arrays to produce acoustic images of high-speed rotating sources. First, the associated Green's function is developed based on the Morse wavelet which also accounts for the ...
Wangqiao Chen, Xun Huang
doaj +1 more source
In-situ monitoring of sub-surface and internal defects in additive manufacturing: A review
Materials & Design, 2022 Additive Manufacturing (AM), or 3D printing, processes depend on a user-defined set of optimized process parameters to create a component. Monitoring and control of AM processes in real-time can help achieve process stability and repeatability to produce
Youssef AbouelNour, Nikhil Gupta
doaj +1 more source
An Iterative Fast Microphone Array Design Method Employing Equilateral Triangular Subarrays
SensorsIn industrial acoustic imaging, microphone array design is often limited by the strong frequency dependence of array performance, the high computational cost of optimization, and the expense of deploying large numbers of microphones.
Xiaobin Hong +3 more
doaj +1 more source
Stem Cell Research & Therapy, 2020 Background The aim of this study was to examine the effect of a three-step approach that utilizes the application of adipose tissue-derived mesenchymal stem cells (AD-MSCs), encapsulation, and pulsed focused ultrasound (pFUS) to help the engraftment and ...
Mehdi Razavi +7 more
doaj +1 more source
Karl Popper and the Mechanisms of Hydrogen Embrittlement
Advanced Engineering Materials, EarlyView.Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley +1 more source
Fish abundance is enhanced within a network of artificial reefs in a large estuary
Frontiers in Marine ScienceArtificial reefs may be created within estuaries for multiple reasons, including habitat enhancement, oyster production, or recreational fishing. While traditional sampling in this environment is difficult due to complex structures and the high turbidity
Charlotte E. Grimes +3 more
doaj +1 more source
Multimodal Data‐Driven Microstructure Characterization
Advanced Engineering Materials, EarlyView.A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang +4 more
wiley +1 more source