Publication detail
Fatigue life of notches: an effect of manufacturing
KOZÁKOVÁ, K. FINTOVÁ, S. KLUSÁK, J.
English title
Fatigue life of notches: an effect of manufacturing
Type
conference paper
Language
en
Original abstract
In this study, the influence of notches in the area of gigacycle fatigue is investigated. The presented study offers experimental fatigue results of smooth and notched specimens. Specimens were made of AW 7075 – T6511 aluminum alloy and have “v” shape notch with radii of 0.1, 0.2, 0.4, 0.8, 1.5, and 3 mm. The fatigue experiments were performed using an ultrasonic fatigue testing machine at 20 kHz test frequency. Fatigue properties of the material were studied and evaluated up to 10 billion cycles in the area of very high cycle fatigue. All fatigue tests were carried out under uniaxial symmetric tension/compression loading (R = -1) at room temperature. As-machined surface and fracture surface of smooth specimens and specimens with 6 different notch radii were observed under an SEM microscope. Results show that there is a strong influence of the manufacturing process on fatigue lifetime.
English abstract
In this study, the influence of notches in the area of gigacycle fatigue is investigated. The presented study offers experimental fatigue results of smooth and notched specimens. Specimens were made of AW 7075 – T6511 aluminum alloy and have “v” shape notch with radii of 0.1, 0.2, 0.4, 0.8, 1.5, and 3 mm. The fatigue experiments were performed using an ultrasonic fatigue testing machine at 20 kHz test frequency. Fatigue properties of the material were studied and evaluated up to 10 billion cycles in the area of very high cycle fatigue. All fatigue tests were carried out under uniaxial symmetric tension/compression loading (R = -1) at room temperature. As-machined surface and fracture surface of smooth specimens and specimens with 6 different notch radii were observed under an SEM microscope. Results show that there is a strong influence of the manufacturing process on fatigue lifetime.
Keywords in English
Notches; very high cycle fatigue; aluminum aloy; machining; surface roughness; ultrasonic fatigue tests
Released
03.01.2023
Publisher
Elsevier
ISSN
2452-3216
Book
Procedia Structural Integrity
Volume
42
Number
1
Pages from–to
270–275
Pages count
6
BIBTEX
@inproceedings{BUT182140,
author="Kamila {Kozáková} and Stanislava {Fintová} and Jan {Klusák},
title="Fatigue life of notches: an effect of manufacturing",
booktitle="Procedia Structural Integrity",
year="2023",
volume="42",
number="1",
month="January",
pages="270--275",
publisher="Elsevier",
issn="2452-3216"
}