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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Beam oscillations for modification of fatique properties of laser welds
 Šebestová, Hana ; Jambor, Michal ; Mrňa, Libor
The application of suitable beam oscillating parameters reduces root notches of laser welds. Beam oscillation welds reach better fatigue properties compared to conventional laser weld, even though the notches are not reduced. The welds made with linear oscillation have the highest number of cycles to fracture in the high-cycle region. However, the root notches are not eliminated in these welds because of high values of current heat input on weld peripheries. The experienced thermal cycles must be also considered. They can induce microstructural transformations and change the distribution and magnitude of residual stresses, which are the additional factors influencing the fatigue lifetime of a weld joint.
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Opportunities in 3D printing using WAAM technology
 Mrňa, Libor ; Horník, Petr ; Šebestová, Hana ; Jambor, Michal
The paper deals with 3D printing with WAAM technology. It presents the results of mechanical properties tests of parts 3D printed from low-carbon steel and evaluates their anisotropy. Mechanical properties are compared with those of conventional structural steel of similar chemical composition. Possible outcomes of the WAAM simulations are also presented.
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See also: similar author names
3 Jambor, Marek
5 Jambor, Martin
5 Jambor, Matúš
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