Detail publikačního výsledku

Study of Initial Stages of Fatigue Process Using Non-destructive Testing Methods

VLAŠIC, F.; VOLÁK, J.; NOHÁL, L.; MAZAL, P.; HORT, F.

Originální název

Study of Initial Stages of Fatigue Process Using Non-destructive Testing Methods

Anglický název

Study of Initial Stages of Fatigue Process Using Non-destructive Testing Methods

Druh

Článek WoS

Originální abstrakt

This paper deals with the basic research of cyclic damage during the initial stages of fatigue process using the non-destructive testing methods. The acoustic emission method was used for monitoring of the microstructure changes during fatigue loading. The electrical potential measurements of specimen and microscopic observation were used mainly to detect the first short cracks and their propagation. The fatigue tests at room temperature were conducted on titanium alloy and creep-resistant steel specimens under bending and tension loading. The aim of the study was to compare the acoustic emission signal at different types of loading until fracture and to analyze in detail the signal changes in initial stages of fatigue process. This analysis was primarily based on the waveform similarity and division into classes. The results show the high sensitivity of the acoustic emission technology in the transition from the stage of surface relief evolution to the stage of crack nucleation and propagation.

Anglický abstrakt

This paper deals with the basic research of cyclic damage during the initial stages of fatigue process using the non-destructive testing methods. The acoustic emission method was used for monitoring of the microstructure changes during fatigue loading. The electrical potential measurements of specimen and microscopic observation were used mainly to detect the first short cracks and their propagation. The fatigue tests at room temperature were conducted on titanium alloy and creep-resistant steel specimens under bending and tension loading. The aim of the study was to compare the acoustic emission signal at different types of loading until fracture and to analyze in detail the signal changes in initial stages of fatigue process. This analysis was primarily based on the waveform similarity and division into classes. The results show the high sensitivity of the acoustic emission technology in the transition from the stage of surface relief evolution to the stage of crack nucleation and propagation.

Klíčová slova

fatigue loading, acoustic emission signal, surface relief evolution, crack

Klíčová slova v angličtině

fatigue loading, acoustic emission signal, surface relief evolution, crack

Autoři

VLAŠIC, F.; VOLÁK, J.; NOHÁL, L.; MAZAL, P.; HORT, F.

Rok RIV

2017

Vydáno

01.01.2014

Nakladatel

Trans Tech Publications

Místo

Switzerland

ISSN

1013-9826

Periodikum

Key Engineering Materials (print)

Svazek

592-593

Číslo

553

Stát

Švýcarská konfederace

Strany od

553

Strany do

556

Strany počet

4

BibTex

@article{BUT100973,
  author="František {Vlašic} and Josef {Volák} and Libor {Nohál} and Pavel {Mazal} and Filip {Hort}",
  title="Study of Initial Stages of Fatigue Process Using Non-destructive Testing Methods",
  journal="Key Engineering Materials (print)",
  year="2014",
  volume="592-593",
  number="553",
  pages="553--556",
  doi="10.4028/www.scientific.net/KEM.592-593.553",
  issn="1013-9826"
}