The influence of in-plane constraints on fatigue crack growth rate

• Autorzy: Gałkiewicz Jarosław , Janus-Gałkiewicz Urszula , Lipiec Sebastian

Identyfikatory

DOI

10.12913/22998624/197172

• Języki publikacji: EN

Abstrakty

EN

The geometry of structural members can influence the fatigue crack growth rate. The influence can be taken into account by incorporating dimensions in the formulas. However, such an approach is ineffective as the dependence of the crack growth rate is hard to predict and the formulas depend on the shape of the element. For each shape, a new formula is required. It is, however, possible to use another approach that can be called a local approach in which parameters of the stress field in the neighbourhood of the crack tip can be utilized. It can be considered as the extension of Paris' approach to fatigue crack growth. In the paper, the T-stress depending on the element's geometry is used to quantify the effect of geometry on the fatigue crack growth rate. A series of fatigue tests on three-point bending specimens with different initial crack lengths were conducted. As a result, the dependence of the crack growth rate on the T-stress value was obtained.

Słowa kluczowe

EN

fatigue analysis; fatigue crack; Paris' law; in-plane constraints; brittle fracture; Williams’ solution

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2025
• Tom: Vol. 19, no. 3
• Strony: 37--46
• Opis fizyczny: Bibliogr. 35 poz., fig., tab.

Twórcy

autor

Gałkiewicz Jarosław

• Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, Aleja Tysiaclecia Panstwa Polskiego 7, 25-314 Kielce, Poland

• https://orcid.org/0000-0002-7659-0946

autor

Janus-Gałkiewicz Urszula

• Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, Aleja Tysiaclecia Panstwa Polskiego 7, 25-314 Kielce, Poland

autor

Lipiec Sebastian

• Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, Aleja Tysiaclecia Panstwa Polskiego 7, 25-314 Kielce, Poland

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).