Welding : Basics, Quality Control and Defect Analysis - Part II

2016 ◽  
Vol 49 (4) ◽  
pp. 49
Author(s):  
Rituraj Bose
Keyword(s):  
Quality Control ◽  
Defect Analysis

Electrochemical Defect Analysis (EC-D) of Additive Manufactured Components

2021 ◽  
Author(s):  
Florian Sous ◽  
Tim Herrig ◽  
Thomas Bergs ◽  
Florian Karges ◽  
Nicole Feiling ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Quality Control ◽  
Additive Manufacturing ◽  
Electrochemical Machining ◽  
Layer By Layer ◽  
Defect Analysis ◽  
Test Rig ◽  
Camera System ◽  
X Ray ◽  
Manufacturing Technologies

Abstract Due to more freedom in design and flexibility in production, parts produced by additive manufacturing technologies (AM) offer a huge potential for the manufacture of turbomachinery components. Because of the layer by layer built structure, internal defects like cracks or gaseous pores can occur. These defects considerably reduce the mechanical properties and increase the importance of quality control, especially in the field of turbomachinery. Therefore, in this study, an electrochemical defect analysis (EC-D) of additive manufactured components is introduced, performed and validated in comparison to a nondestructive X-ray testing of the same part. A test rig was developed, which allows an alternation between electrochemical machining and subsequent optical documentation of each removed layer. The documentation of the surface and the macroscopic defects in the AM-parts are captured by an integrated camera system.

Electrochemical Defect Analysis (EC-D) of Additive Manufactured Components

2021 ◽  
Author(s):  
Florian Sous ◽  
Tim Herrig ◽  
Thomas Bergs ◽  
Florian Karges ◽  
Nicole Feiling ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Quality Control ◽  
Additive Manufacturing ◽  
Electrochemical Machining ◽  
Layer By Layer ◽  
Defect Analysis ◽  
Test Rig ◽  
Camera System ◽  
X Ray ◽  
Manufacturing Technologies

Abstract Due to more freedom in design and flexibility in production, parts produced by additive manufacturing technologies (AM) offer a huge potential for the manufacture of turbomachinery components. Because of the layer by layer built structure, internal defects like cracks or gaseous pores can occur. These defects considerably reduce the mechanical properties and increase the importance of quality control, especially in the field of turbomachinery. Therefore, in this study, an electrochemical defect analysis (EC-D) of additive manufactured components is introduced, performed and validated in comparison to a nondestructive X-ray testing of the same part. A test rig was developed, which allows an alternation between electrochemical machining and subsequent optical documentation of each removed layer. The documentation of the surface and the macroscopic defects in the AM-parts are captured by an integrated camera system.

Ship Welding Defect Analysis and Quality Control

2013 ◽  
Vol 365-366 ◽  
pp. 1229-1234
Author(s):  
Yan Jing ◽  
Li Min Yu
Keyword(s):  
Quality Control ◽  
Defect Analysis ◽  
Ship Building ◽  
Welding Defects ◽  
Welding Defect ◽  
Ship Repair ◽  
Application Scope

Common welding defects in ship building and ship repair were intro-duced; the forming mechanisms, distributions and forms of expression of the defects were analyzed, Foundry-Techniques for preventing kinds of defects were given and common methods and application scope of ship welding inspection were concluded.

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