Transactions on Intelligent Welding Manufacturing: Volume III No. 1 2019

Editorials
Contents
Feature Articles
The Review of Spectrum Detection and Ultrasonic Vibration Control of Porosity Defects in Aluminum Alloy Welding
	1 Introduction
	2 Forming Mechanism of Aluminum Welding Pore
	3 The Detection of Aluminum Welding Pore
		3.1 Traditional Detection Method
		3.2 Spectral Detection Method
	4 The Inhabitation of the Porosity Defects in Aluminum Welding
		4.1 Research Status of Welding Porosity Inhabitation Measures
		4.2 Porosity Defect Inhabitation Based on Ultrasonic Energy Field
	5 Key Difficulties and Research Direction
	6 Conclusion
	References
Research Papers
Microstructure and Mechanical Properties of TC4 Titanium Alloy by Electron Beam Freeform Fabrication
	1 Introduction
	2 Materials and Methods
	3 Results and Discussions
		3.1 Macroscopic Morphology of the Deposited Layers by Electron Beam Freeform Fabrication
		3.2 Microstructure Morphology of the Deposited Layers
		3.3 Microstructure of Electron Beam Freeform Fabrication after Solution Aging
		3.4 Microstructural Evolution of Deposition Layer Before and After Solution Aging
		3.5 Effect of Heat Input on Microhardness
		3.6 Mechanical Properties of the Deposited Layers Electron Beam Freeform Fabrication
	4 Conclusions
	References
Weld Flaw Recognition with Improved Convolutional Neural Network
	1 Introduction
	2 Feature Selection Method Based on Improved CNN
		2.1 ELU Activation Function Analysis
		2.2 Principle and Application of SLIC Algorithm
		2.3 Defect Type Identification Process Based on Improved CNN
	3 CNN Model Construction and Defect Identification
		3.1 Improve CNN Model Construction
		3.2 Overview of Weld Flaw Detection Image Dataset
		3.3 Image Defect Recognition and Analysis
	4 Conclusion
	References
Mask R-CNN-Based Welding Image Object Detection and Dynamic Modelling for WAAM
	1 Introduction
	2 Experimental System
	3 Mask R-CNN-Based Objective Detection and Segmentation
		3.1 Configuration and Implementation
		3.2 Training and Evaluation
	4 System Identification
		4.1 Pseudo-random Ternary Signal
		4.2 Dynamic Modelling
	5 Conclusion
	References
Research on Fuzzy Comprehensive Evaluation of Seam Quality in Double-Wire Double-Pulsed MIG High-Speed Welding
	1 Introduction
	2 Stability Analysis of High-Speed Welding Electric Signal Based on Sample Entropy
		2.1 Electrical Signal Stability Sample Entropy Evaluation Index
		2.2 Two-Wire High-Speed Welding Electric Signal Sample Entropy Evaluation Test
		2.3 Stability Analysis of High-Speed Welding Based on Probability Density Double Wire
		2.4 Fuzzy Evaluation of the Quality of Double-Wire High-Speed Welding
	3 Conclusion
	References
Welding Deviation Extraction during K-TIG Welding Based on K-Means Clustering
	1 Introduction
	2 Welding Deviation Identification System
	3 Image Segmentation Based on K-Means Clustering Welding
		3.1 Cluster Center Point Determination
		3.2 Image Segmentation
	4 Subregional Feature Extraction
		4.1 Optimal Path Algorithm for Electrode Tip Position Extraction
		4.2 Refinement Algorithm for Seam Center line Detection
	5 Test Verification
	6 Conclusion
	References
Thermal Characteristics of Narrow Gap GMA Welding at Vertical Position with Arc Swinging and Shifting
	1 Introduction
	2 Experiment
	3 Arc Moving Process Analysis and Line Energy Calculation
	4 Analysis of Evolution of Molten Pool Morphology and Joint Forming Characteristics
	5 Analysis of Thermal Cycle Curve in Coarse-Grained Region and Transformation of Micro-Region
	6 Conclusion
	References
Kinematics Analysis of Mechanical Arm of a Ten-Joint Tunnel Arch Installation Trolley
	1 Introduction
	2 Mechanical Arm Structure of the Arch Installation Trolley
	3 Forward Kinematics Analysis of the Mechanical Arm of Arch Installation Trolley
		3.1 Determination of Link Coordinate System and D–H Parameters
		3.2 Forward Kinematics Modeling
	4 Inverse Kinematics Solution of Mechanical Arm for Arch Installation Trolley
		4.1 Inverse Kinematics Analysis of Forearm
		4.2 Inverse Kinematics of Boom
		4.3 Inverse Kinematics Solution of Boom
	5 Verification of Forward and Inverse Kinematics of Manipulator
	6 Conclusion
	References
Research of Multi-source Information Sensing Technology in Defect Detection on Automatic Welding
	1 Introduction
	2 Ultrasonic Testing Technology
	3 Spectrum Detection Technology
	4 Magneto-Optic Imaging Detection Technology
	5 Development Trend
	References
Short Papers and Technical Notes
Research on Resonant High-Voltage Plasma Power Supply
	1 Introduction
	2 The Principle of High-Voltage Plasma Circuit
	3 Main Circuit Simulation of High-Voltage Plasma Power Supply
		3.1 Modeling Based on MATLAB–Simulink
		3.2 Simulation Results
	4 Design of High-Voltage Plasma Power Supply
		4.1 Design of Control Circuit
		4.2 Experimental Waveform
	5 Conclusion
	References
Information for Authors
Aims and Scopes
Submission
Style of Manuscripts
Format of Manuscripts
Originality and Copyright
Author Index