Journal ArticleDOI
Study of inner porosity detection for Al-Mg alloy in arc welding through on-line optical spectroscopy: Correlation and feature reduction
TLDR
In this paper, the authors investigated the key technologies for on-line inner porosity detection for aluminum-magnesium (Al-Mg) alloy in pulsed gas tungsten arc welding (GTAW) using arc optical spectroscopy and post-micro-characterization.About:
This article is published in Journal of Manufacturing Processes.The article was published on 2019-03-01. It has received 22 citations till now. The article focuses on the topics: Arc welding & Gas tungsten arc welding.read more
Citations
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XGBoost-based on-line prediction of seam tensile strength for Al-Li alloy in laser welding: Experiment study and modelling
TL;DR: In this article, the regression prediction of laser welding seam strength of aluminum-lithium alloy used in the rocket storage tank by means of the optical spectrum and extreme gradient boosting decision tree (XGBoost) was studied.
Journal ArticleDOI
Welding penetration monitoring for pulsed GTAW using visual sensor based on AAM and random forests
Chao Chen,Na Lv,Shanben Chen +2 more
TL;DR: Wang et al. as discussed by the authors proposed an intelligent penetration monitoring methodology for pulsed gas tungsten arc welding (GTAW) by combining pattern-based visual feature extraction method and supervised machine learning method.
Journal ArticleDOI
Application of sensing technology in intelligent robotic arc welding: A review
TL;DR: In this paper , the development and application of various sensing technologies and multisensor fusion technologies for intelligent robotic arc welding are reviewed and discussed, and according to the different objectives of each welding stage, the advanced sensing technologies, including those for weld path recognition, weld seam tracking, weld pool monitoring, weld quality diagnosis, and weld bead inspection, are summarized and compared.
Journal ArticleDOI
Real-time seam defect identification for Al alloys in robotic arc welding using optical spectroscopy and integrating learning
TL;DR: A new real-time defect identification method is proposed for Al alloys in robotic arc welding, using arc optical spectroscopy and an integrated learning method, which proved to effectively identify five classes of weld defects with better performance than support vector machine and back propagation neural network.
Journal ArticleDOI
A comparative study on microstructure and properties of pulsed laser welding and continuous laser welding of Al-25Si-4Cu-Mg high silicon aluminum alloy
TL;DR: In this article, a comparative study of the continuous laser welding and pulse laser welding of high-silicon aluminum alloy Al-25Si-4Cu-Mg was conducted to explore the influence of different laser energy output modes on welding.
References
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Journal Article
Visualizing Data using t-SNE
TL;DR: A new technique called t-SNE that visualizes high-dimensional data by giving each datapoint a location in a two or three-dimensional map, a variation of Stochastic Neighbor Embedding that is much easier to optimize, and produces significantly better visualizations by reducing the tendency to crowd points together in the center of the map.
Journal ArticleDOI
Model-Based Predictive Control of Weld Penetration in Gas Tungsten Arc Welding
YuKang Liu,YuMing Zhang +1 more
TL;DR: An innovative 3-D vision sensing system is used to measure the characteristic parameters of the weld pool in real-time in gas tungsten arc welding and it is confirmed that the developed control system is effective in achieving the desired weld joint penetration under various disturbances and initial conditions.
Journal ArticleDOI
An instrument for in situ time-resolved X-ray imaging and diffraction of laser powder bed fusion additive manufacturing processes
Nicholas P. Calta,Jenny Wang,Andrew M. Kiss,Aiden A. Martin,Philip J. Depond,Gabriel M. Guss,Vivek Thampy,Anthony Y. Fong,Johanna Nelson Weker,Kevin H. Stone,Christopher J. Tassone,Matthew J. Kramer,Michael F. Toney,Anthony van Buuren,Manyalibo J. Matthews +14 more
TL;DR: A laboratory-scale LPBF test bed designed to accommodate diffraction and imaging experiments at a synchrotron X-ray source during LPBF operation is described and experimental results using Ti-6Al-4V, a widely used aerospace alloy, as a model system are presented.
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EMD-based pulsed TIG welding process porosity defect detection and defect diagnosis using GA-SVM
TL;DR: In this paper, a portable spectrometer based on a linear CCD is designed with real-time acquisition and processing of spectral data in the welding process of aluminum alloys, which extracts several characteristic spectral lines and calculates the intensity ratio between H I and Ar I.
Journal ArticleDOI
Control of 3D weld pool surface
YuKang Liu,YuMing Zhang +1 more
TL;DR: In this article, the 3D weld pool surface in gas tungsten arc welding (GTAW) is characterized by its width, length, convexity and measured in real-time using an innovative machine vision system.