Results 61 to 70 of about 3,511 (220)

Evaluating Near‐Surface Wind Speeds Simulated by the CRCM6‐GEM5 Model Using AmeriFlux Data Over North America

open access: yesJournal of Advances in Modeling Earth Systems, Volume 17, Issue 3, March 2025.
Abstract We evaluate the performance of various configurations of the Canadian Regional Climate Model (CRCM6‐GEM5) in simulating 10‐m wind speeds using data from 27 AmeriFlux stations across North America. The assessment employs a hierarchy of error metrics, ranging from simple mean bias to advanced metrics that account for the dependence of wind ...
Tim Whittaker   +3 more
wiley   +1 more source

Research on Detection Method for Welding Seam Defects in Ultrasonic TOFD Image Based on Mask R-CNN

open access: yesJournal of Physics: Conference Series, 2021
In this paper, the technology of ultrasonic TOFD was used in the welding seam inspection of construction steel structure. 162 ultrasonic TOFD scanning images including five kinds of common defects were obtained through field test.
Yimin Wang   +4 more
semanticscholar   +1 more source

Fluctuation Analyses for Pattern Classification in Nondestructive Materials Inspection

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
We review recent work on the application of fluctuation analyses of time series for pattern classification in nondestructive materials inspection. These analyses are based on the evaluation of time-series fluctuations across time intervals of increasing ...
A. P. Vieira   +2 more
doaj   +1 more source

Ultrasound in material diagnostics [PDF]

open access: yes, 2015
Cílem semestrálního projektu je prostudovat fyzikální základy ultraakustiky a seznámit se s možnostmi využití ultrazvuku v diagnostice materiálů. Dále se seznámit s funkcemi a obsluhou ultrazvukového zařízení EPOCH LT od firmy OLYMPUS a provést měření ...
Kristek, Michal
core  

Segmenting hydrogen‐induced cracking defects in steel through scanning acoustic microscopy and deep neural networks

open access: yesEngineering Reports, Volume 6, Issue 12, December 2024.
This research employs the YOLOv8‐seg deep learning model to identify and segment hydrogen‐induced cracking (HIC) in steel through B‐scan images obtained via Scanning Acoustic Microscopy (SAM), achieving a mean Average Precision (mAP) score better than 0.95.
Thi Thu Ha Vu   +8 more
wiley   +1 more source

A wireless ultrasonic NDT sensor system [PDF]

open access: yes, 2005
Ultrasonic condition monitoring technologies have been traditionally utilized in industrial and construction environments where structural integrity is of concern.
Benny, C.G.   +3 more
core  

A multimodal expert system for the intelligent monitoring and maintenance of transformers enhanced by multimodal language large model fine‐tuning and digital twins

open access: yesIET Collaborative Intelligent Manufacturing, Volume 6, Issue 4, December 2024.
(1) An intelligent monitoring and maintenance digital twin multimodal expert reasoning system, fine‐tuned on visual language‐based large models, is proposed. (2) This system not only achieves real‐time monitoring of the transformer's operational status but also generates maintenance strategies intelligently based on operational conditions.
Xuedong Zhang   +3 more
wiley   +1 more source

Scale‐ and Variable‐Dependent Localization for 3DEnVar Data Assimilation in the Rapid Refresh Forecast System

open access: yesJournal of Advances in Modeling Earth Systems, Volume 16, Issue 11, November 2024.
Abstract This study demonstrates the advantages of scale‐ and variable‐dependent localization (SDL and VDL) on three‐dimensional ensemble variational data assimilation of the hourly‐updated high‐resolution regional forecast system, the Rapid Refresh Forecast System (RRFS).
Sho Yokota   +6 more
wiley   +1 more source

Design and Validation of an Articulated Sensor Carrier to Improve the Automatic Pipeline Inspection

open access: yesSensors, 2019
Pipeline inspection gauges (PIGs) carry out automatic pipeline inspection with nondestructive testing (NDT) technologies like ultrasound, magnetic flux leakage, and eddy current.
Antonio Ramirez-Martinez   +4 more
doaj   +1 more source

Optical emission investigation of laser-produced MgB2 plume expanding in an Ar buffer gas

open access: yes, 2002
Optical emission spectroscopy is used to study the dynamics of the plasma generated by pulsed-laser irradiation of a MgB2 target, both in vacuum and at different Ar buffer gas pressures.
Amoruso, S.   +5 more
core   +2 more sources

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