A. Spegarova

ORCID: 0000-0003-1609-2264
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About
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Research Areas
  • Welding Techniques and Residual Stresses
  • Microstructure and Mechanical Properties of Steels
  • Adhesion, Friction, and Surface Interactions
  • Metal Alloys Wear and Properties
  • Magnetic and Electromagnetic Effects
  • Geophysics and Sensor Technology
  • Metallic Glasses and Amorphous Alloys
  • Advancements in Materials Engineering
  • Fatigue and fracture mechanics
  • Advanced MEMS and NEMS Technologies
  • Advanced Fiber Optic Sensors

Technical University of Košice
2021

The presented research background is a car body manufacturer’s request to test the body’s components welded from dissimilar steel sheets. In view of vehicle crew’s protection, it necessary study static and dynamic behavior steels. Therefore, influence laser welding on mechanical dynamical properties, microstructure, microhardness, joint surface roughness interstitial free CR180IF dual-phase DP600 steels were investigated. Static tensile tests carried out by using testing machine Zwick 1387,...

10.3390/ma14061553 article EN Materials 2021-03-22

The paper analyses the influence of fatigue characteristics laser welding steels sheets. combination welded steel sheets DC06EK has been subjected to stress testing. To assess condition material under cyclic and determine such as or resp. time limit was performed according STN 42 0363. Fatigue tests were on test piece. experimental had a weld with rough surface. specimens pulsating positive disappearing thrust at constant value coefficient unbalance 0‹R‹1 frequency 25 Hz. determined 260 MPa....

10.1051/matecconf/202031000004 article EN cc-by MATEC Web of Conferences 2020-01-01
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