Comparison of crack growth rates of IPE beams made from stainless steel in three-point bending

0578851 - ÚFM 2025 RIV NL eng C - Conference Paper (international conference)
Juhászová, Tereza - Miarka, Petr - Seitl, Stanislav
Comparison of crack growth rates of IPE beams made from stainless steel in three-point bending.
Procedia Structural Integrity. Vol. 51. Amsterdam: Elsevier, 2023, s. 213-218. ISSN 2452-3216.
[ICSID 2022 - International conference on structural integrity and durability /6./. Dubrovník (HR), 20.09.2022-23.09.2022]
R&D Projects: GA ČR(CZ) GA21-14886S
Institutional support: RVO:68081723
Keywords : IPE 80 * 3PBT * fatigue * Paris Law * AISI 304 * AISI 316
OECD category: Civil engineering

The main focus of research dealing with a fatigue of steel components is mostly performed by mechanical testing with focus set on small-scale components. On the other hand, from a civil engineering viewpoint, the steel load-bearing structures or their elements have much larger dimension, when comparing them to laboratory specimens. Therefore, the fatigue testing took place on IPE 80 specimens made from two different stainless steels AISI 304 and AISI 316, loaded in three-point bending with data collection of crack mouth opening displacement placed in mid-span using clip-on extensometer. This presented study focuses on the comparison of crack propagation rate in linear region of well-known Paris’ law. For the assessment of material constants from Paris’ equation C and m, two steel grades of stainless steel, AISI 304 and AISI 316 were experimentally obtained. To evaluate the experimental data, a three-dimensional (3D) numerical model, representing IPE 80 geometry, in a finite element method (FEM) software Ansys Mechanical APDL was created. The generated numerical results were used to evaluate stress intensity factor values, which serves as a main input to crack propagation Paris’ law.
Permanent Link: https://hdl.handle.net/11104/0352813