Results 121 to 130 of about 11,671 (227)

Welding defects at friction stir welding

open access: yesMetalurgija, 2015
The paper presents an overview of different types of defects at friction stir welding. In order to explain the reasons for their occurrence a short theoretical background of the process is given first. The main emphasis is on the parameters that influence the process. An energy supply based division of defects into three disjoint groups was used.
P. Podržaj, B. Jerman, D. Klobčar
openaire   +3 more sources

Investigation of The Weldability of PLA Plus Sheets with Different Infill Ratios by Friction Stir Welding

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi
Although the joining processes of plastics are typically carried out through welding, adhesive bonding, or mechanical fastening elements, the production of complex and large parts often requires welding technology.
Nergizhan Anaç   +2 more
doaj   +1 more source

Arc welding of high strength aluminium alloys for armour systems applications [PDF]

open access: yes, 2011
The ternary Al-Cu-Mg system 2xxx series aluminium alloys were examined as construction materials for armour system applications based upon comparable ballistic properties to the currently employed Al-7xxx series alloys.
Pickin, Craig Graeme
core  

Numerical Simulation and Metal Fluidity Analysis of Refill Friction Stir Spot Welding Based on 6061 Aluminum Alloy

open access: yesCrystals
Simulation analysis is a key technical means for studying the internal metal flow patterns in refill friction stir spot welding zones. This study used DeformV11.0 software to establish an accurate and reliable numerical simulation model for 6061-T6 ...
Di Jiang   +3 more
doaj   +1 more source

Nonlinear Discrete Observer for Flexibility Compensation of Industrial Robots [PDF]

open access: yes, 2014
This paper demonstrates the solutions of digital observer implementation for industrial applications. A nonlinear high-gain discrete observer is proposed to compensate the tracking error due to the flexibility of robot manipulators. The proposed discrete
ABBA, Gabriel   +2 more
core   +1 more source

Investigation of thermal techniques to mitigate buckling distortion in welding panels [PDF]

open access: yes, 2012
This thesis describes the advancements of the application of thermal tensioning techniques to different weld geometries in order to eliminate buckling distortion.
Nagy, T.
core  

Robotized FSW – Evolution of forces and torque with nonlinear welds [PDF]

open access: yes, 2014
The main purpose of the article is to study the evolution of the welding forces and torque with non-straight welding path. The main studies performed on forces and torque are usually done on plane straight welding path when the processing parameter are ...
HATSCH, Jonathan   +6 more
core  

Measurement and modelling of the transient thermal-mechanical strain field during GMA welding [PDF]

open access: yes, 2011
The state of residual stress in welded joints is a well-studied topic, and many methodsof residual stress measurement are now available. However, far less is known aboutthe transient strains which occur during the welding process, even though these ...
Colegrove, Paul A.   +3 more
core  

Effect of welding parameters on mechanical and microstructural properties of AL 2024 joints produced by friction stir welding [PDF]

open access: yes, 2009
Results of Friction Stir Welding (FSW) of aluminium 2024 are presented in this paper. Investigations were conducted on the welding machine, built on the base of the conventional, vertical milling machine.
Węglowska, A.   +3 more
core  

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