Fatigue crack growth behavior of laser-shock processed aluminum alloy 2024-T3 (2019)
- Authors:
- Autor USP: BAPTISTA, CARLOS ANTONIO REIS PEREIRA - EEL
- Unidade: EEL
- DOI: 10.1016/j.prostr.2019.08.043
- Assunto: FADIGA DAS ESTRUTURAS
- Keywords: Laser shock processing; Fatigue crack growth; Aluminum alloy 2024
- Language: Inglês
- Abstract: Laser shock processing (LSP) is a surface modification technique aimed at enhancing the resistance to wear, corrosion and fatigue of structural alloys. Recently, LSP without coating (LSPwC) has been gaining ground, using lasers with lower energies, shorter pulse duration, smaller laser spots and higher surface coverage per shot. In the present work, LSPwC treatment was performed in both sides of pre-cracked compact tension specimens of aluminum alloy 2024-T3. A pulsed (9 ns) Nd:YAG laser system operating in the second harmonic (532 nm) at 10 Hz repetition rate and with pulse energy of about 270 mJ was positioned with a 500 mm focal distance lens in order to conduct LSPwC with an estimated power density of 5.2 GW/cm2 and two distinct overlapping rates: 50% and 75%. The objective of the work was to investigate the effect of the LSPwC and cyclic load condition on the crack closure and fatigue crack growth (FCG) behavior shown by the samples. Constant amplitude FCG tests were performed with two distinct load ratios: R = 0.2 and R = 0.5. A small increase in the crack closure loads (Pcl ≈ 1.1-1.2 Pmin) and in the number of cycles to crack propagation was evinced for the specimens tested at R = 0.2 compared to the untreated ones, whereas negligible effect was observed in the R = 0.5 tests. Besides, the obtained results indicate that the increase in overlapping rate is not effective for the adopted LSPwC conditions.
- Imprenta:
- Source:
- Título: Procedia Structural Integrity
- ISSN: 24523216
- Volume/Número/Paginação/Ano: v., n. , p.324-330, 2019
- Este periódico é de acesso aberto
- Este artigo é de acesso aberto
- URL de acesso aberto
- Cor do Acesso Aberto: gold
- Licença: cc-by-nc-nd
-
ABNT
BAPTISTA, Carlos Antonio Reis Pereira et al. Fatigue crack growth behavior of laser-shock processed aluminum alloy 2024-T3. Procedia Structural Integrity, n. , p. 324-330, 2019Tradução . . Disponível em: https://doi.org/10.1016/j.prostr.2019.08.043. Acesso em: 29 dez. 2025. -
APA
Baptista, C. A. R. P., Lima, M. S. F., Riva, R., & Siqueira, R. H. M. (2019). Fatigue crack growth behavior of laser-shock processed aluminum alloy 2024-T3. Procedia Structural Integrity, ( ), 324-330. doi:10.1016/j.prostr.2019.08.043 -
NLM
Baptista CARP, Lima MSF, Riva R, Siqueira RHM. Fatigue crack growth behavior of laser-shock processed aluminum alloy 2024-T3 [Internet]. Procedia Structural Integrity. 2019 ;( ): 324-330.[citado 2025 dez. 29 ] Available from: https://doi.org/10.1016/j.prostr.2019.08.043 -
Vancouver
Baptista CARP, Lima MSF, Riva R, Siqueira RHM. Fatigue crack growth behavior of laser-shock processed aluminum alloy 2024-T3 [Internet]. Procedia Structural Integrity. 2019 ;( ): 324-330.[citado 2025 dez. 29 ] Available from: https://doi.org/10.1016/j.prostr.2019.08.043 - Effect of shot peening on fatigue behavior of AISI 4340 in different loading conditions
- Mechanical behavior of surface nitrided and heat-treated laser welded Ti-6Al-4V
- Investigation of residual stress, stress relaxation and work hardening effects induced by shot peening on the fatigue life of AA 6005-T6 aluminum alloy
- Fracture Resistance of Flash Welded and Laser Welded Butt Joints in a Microalloyed HSLA Steel
- Influence of Niobium or Molybdenum Addition on Microstructure and Tensile Properties of Nickel-Chromium Alloys
- Numerical model for the stress field ahead of a crack in elastoplastic regime
- Fatigue in laser welded titanium tubes intended for use in aircraft pneumatic systems
- Fatigue crack growth in an Al-Mg-Si Alloy under negative load ratio
- Effect of cold-working process on cyclic deformation of electrolytic copper
- Fatigue crack propagation of API 5L X70 steel in a modifed simulated fuel-grade ethanol (MSFGE) environment
Informações sobre o DOI: 10.1016/j.prostr.2019.08.043 (Fonte: oaDOI API)
How to cite
A citação é gerada automaticamente e pode não estar totalmente de acordo com as normas
