Fatigue Crack Growth Simulation of Aluminium Alloy under Cyclic Sequence Effects

Abdullah, Shahrum; Beden, S. M.; Ariffin, Ahmad Kamal

doi:10.5772/14898

Cited by 4 publications

(3 citation statements)

References 37 publications

(29 reference statements)

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“…In this study, the NASGRO model was used to verify the XFEM for fatigue crack growth rates at different load ratios. The NASGRO model characterizes the most complete crack growth law formulation, comprising stress ratio (R) effects, the tails at the upper and lower ends of the growth rate curve, and crack closure, which considers the effect of plasticity [18]. The NASGRO equation is expressed as:…”

Section: Fatigue Crack Growth Verificationmentioning

confidence: 99%

Residual stress effects on fatigue crack propagation in Butt–Welded joints for 304 stainless steel sheets

et al. 2021

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Welded joints are sensitive to fatigue failure due to cyclic loading, as well as fatigue crack propagation influenced by the distribution of welding residual stress. In this study, the fatigue crack propagation rates in butt-welded joints for 304 stainless steel sheets were evaluated in the presence of welding residual stresses. The analysis consisted of two separate models: first, a 3D-finite element (FE) model was used to predict the residual stresses due to welding; second, a numerical study was undertaken to predict fatigue crack propagation in the presence and absence of residual stress using the extended finite element method (XFEM). The crack growth model (NASGRO) and available experimental data were applied to verify the simulation results. The XFEM without residual stress effects shows good agreement with the experimental data and the NASGRO model. However, in the presence of residual stress, the simulation results show less agreement with the NASGRO model. The level and the nature of residual stress have significant effects on crack growth. A faster crack propagation rate is recognized due to the effect of tensile residual stress at the crack tip, while a higher resistance to crack growth is developed due to a compressive residual stress field.

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Section: Fatigue Crack Growth Verificationmentioning

confidence: 99%

Residual stress effects on fatigue crack propagation in Butt–Welded joints for 304 stainless steel sheets

et al. 2021

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“…Untuk semua sambungan yang diuji, kapasitas beban tertinggi diperoleh untuk sambungan rivet yang ditembus sendiri, sedangkan yang terendah untuk sambungan yang sudah dibor dengan rivet paduan aluminium. Selain itu, ditemukan bahwa kekuatan geser sambungan rivet yang ditembus sendiri lebih tinggi dibandingkan dengan paku keling buta aluminium dan baja (Abdullah, Beden, & Ariffin, 2011).…”

Section: Pendahuluanunclassified

Analisa Kekuatan Sambungan Rivet Zig-Zag dan Inline dengan Plat Al 2024-T3

Dwinata

Putra

Riana

2021

SLJIL

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Kualitas sambungan rivet berperan penting untuk menahan beban khususnya pada struktur badan pesawat. Umumnya terdapat dua pengaturan susunan rivet yakni zig-zag dan inline. Penelitian ini bertujuan untuk menganalisa kekuatan kedua jenis sambungan rivet tersebut. Pengujian spesimen dilakukan dengan 2 cara, yakni pengujian secara riil yang mengacu pada standard EN ISO 12996:2013 tentang pengujian destruktif pada sambungan dan pengujian secara numerik menggunakan perangkat lunak Ansys 2020 R2. Dua spesimen uji tersebut masing-masing memiliki susunan rivet zig-zag dan inline dengan diameter rivet Ø 3,2 mm dan pelat Al 2024-T3 tebal 0,8 mm dan lebar 37 mm. Hasil pengujian Tarik menunjukkan bahwa susunan rivet zig-zag dapat menerima beban maksimum sebesar 6,01 kN sedangkan susunan rivet inline 5,73 kN. Sedangkan pengujian numerik menunjukkan bahwa tegangan maksimum ekuivalen von-Mises pada susunan rivet zig-zag sebesar 930,8 MPa sedangkan susunan rivet inline sebesar 865,1 MPa.

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“…Section 3 discusses the results and, finally, section 4 summarizes the results of this work and draws conclusions. To study the characteristics of long-standing cracks, all tests were performed in ambient air with a frequency of 10 Hz [7] and under sinusoidal loading of constant amplitude 118 MPa [8], with a load ratio R between 0.1 and 0.7. The purpose of these tests is to characterize the behavior of long cracks in the case of 2024 T3 aluminum alloy plates by determining the propagation threshold and the Parisian law coefficients.…”

mentioning

confidence: 99%

Crack growth study under thermo-mechanical loads: parametric analysis for 2024 T3 aluminum alloy

abdallah

Elajrami

Slimani

2019

Frattura Ed Integrità Strutturale

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Due to their severe operating conditions, many industrial components are subjected to complex combinations of cyclic mechanical stresses and thermal pressures. These combinations are responsible for the initiation and propagation of fatigue cracks in these parts, which can lead to failure. Thus, the study of the fatigue strength of these parts in such conditions becomes essential because it allows us to predict the life and safety of components. This study examines the influence of the load ratio and temperature on the propagation rate of long cracks on the outer surface. The propagation of a fatigue crack in ABAQUS was therefore automatically simulated using an identified Paris law of 2024 T3 aluminum alloy. Therefore, the study of these components' fatigue resistance in such conditions becomes essential to predict the service life and safety of the components.

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Fatigue Crack Growth Simulation of Aluminium Alloy under Cyclic Sequence Effects

Cited by 4 publications

References 37 publications

Residual stress effects on fatigue crack propagation in Butt–Welded joints for 304 stainless steel sheets

Residual stress effects on fatigue crack propagation in Butt–Welded joints for 304 stainless steel sheets

Analisa Kekuatan Sambungan Rivet Zig-Zag dan Inline dengan Plat Al 2024-T3

Crack growth study under thermo-mechanical loads: parametric analysis for 2024 T3 aluminum alloy

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