Numerical study on fatigue crack behavior of 2024 Al alloy in abrasive waterjet peening

Lv, Zijian; Hou, Rongguo; Cui, Huanyong; Zhang, Miaomiao; Huang, Yun

doi:10.1007/s00170-023-11742-1

“…In addition, the rotational speed [ 46 ] can be changed during the process of RFW. In addition, the rate of growth of a fatigue crack was not investigated using the Paris law [ 47 , 48 , 49 ]. Carbon dioxide laser [ 50 , 51 , 52 ] or fiber laser [ 52 , 53 , 54 , 55 ] have also been recommended as methods with which to join polymer rods.…”

Section: Resultsmentioning

confidence: 99%

Fatigue Behavior of Rotary Friction Welding of Acrylonitrile Butadiene Styrene and Polycarbonate Dissimilar Materials

Kuo

¹

,

Gurumurthy

²

,

Hunag³

2023

Polymers

2

0

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Understanding the fatigue behaviors of weld joints is significant in engineering practice. Rotary friction welding (RFW) can join the additively manufactured polymer components. Until now, no research has focused on the fatigue behavior of polymer components jointed via RFW. This study investigates the fatigue life of ABS/PC dissimilar components fabricated via RFW and proposes the fatigue mechanism based on the failure structure. This work uses five different cyclic loads and rotational speeds to investigate the fatigue life. The fatigue life of the RFW of ABS/PC dissimilar rods is better compared with the pure ABS and pure PC specimens due to weld and integrity microstructural changes resulting from the combination of ABS and PC materials. The number of cycles until the rupture of RFW of ABS/PC dissimilar components (y) can be determined by the cyclic load (x) according to the prediction equation of y = −838.25x2 − 2035.8x + 67,262. The fatigue life of the RFW of ABS/PC dissimilar components increase with the increased rotational speed. The number of cycles until rupture (y) can be determined by the different rotational speeds (x) according to the prediction equation of y = 315.21x2 + 2710.4x + 32,124.

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“…In order to verify the validity of the model, experiments were performed by using the previously developed abrasive waterjet equipment depicted in [18]. The chemical composition of the target material is shown in table 2.…”

Section: Fe Modeling Of the Peeningmentioning

confidence: 99%

Study on fatigue crack growth property of abrasive waterjet peened aluminum alloy

Wang,

Lv,

Cui

et al. 2024

Mater. Res. Express

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Abrasive waterjet peening is a favorable surface treatment method for improving the fatigue resistance of metal materials. An insight into the fatigue crack growth properties of AWJ peened specimens is meaningful for obtaining better strengthening performance. In present work, a numerical model of AWJ peening was established and experimentally validated for investigating the fatigue crack growth characteristics of Aluminum specimens. The effect of peening and loading conditions on the fatigue performance was also analyzed. The results indicated that the stress intensity factor at the peened region was enhanced and the crack propagation was significantly inhibited by the compressive residual stress. The influence of compressive residual stress on the effective stress factor range is greater under lower external load and higher loading ratio. The fatigue life for reaching the crack length of 40 mm is increased by 37%, 60% and 98% after peening by using the intensity of 0.6 mmA, 0.8 mmA and 1 mmA, respectively.

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“…In order to verify the validity of the model, experiments were performed by using the abrasive waterjet equipment shown in Fig. 2, which was depicted in [18]. The chemical composition of the target material is shown in Table 2.…”

Section: Fe Modeling Of the Peeningmentioning

confidence: 99%

“…2. The abrasive waterjet peening apparatus [18]. After the processing, the specimen surface was cleaned and observed using SEM.…”

Section: Fe Modeling Of the Peeningmentioning

confidence: 99%

Study on fatigue crack growth property of AWJ peened aluminum alloy

Wang,

Lv,

Cui

et al. 2024

Preprint

Self Cite

0

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Abrasive waterjet peening is a favorable surface treatment method for improving the fatigue resistance of metal materials. An insight into the fatigue crack growth properties of AWJ peened specimens is meaningful for obtaining better strengthening performance. In present work, a numerical model of AWJ peening was established and experimentally validated for investigating the fatigue crack growth characteristics of Aluminum specimens. The effect of peening and loading conditions on the fatigue performance was also analyzed. The results indicated that the stress intensity factor at the peened region was enhanced and the crack propagation was significantly inhibited by the compressive residual stress. The influence of compressive residual stress on the effective stress factor range is greater under lower external load and higher loading ratio. The fatigue life for reaching the crack length of 40 mm is increased by 37%, 60% and 98% after peening by using the intensity of 0.6 mmA, 0.8 mmA and 1 mmA, respectively.

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Numerical study on fatigue crack behavior of 2024 Al alloy in abrasive waterjet peening

Cited by 7 publications

References 23 publications

Fatigue Behavior of Rotary Friction Welding of Acrylonitrile Butadiene Styrene and Polycarbonate Dissimilar Materials

Fatigue Behavior of Rotary Friction Welding of Acrylonitrile Butadiene Styrene and Polycarbonate Dissimilar Materials

Study on fatigue crack growth property of abrasive waterjet peened aluminum alloy

Study on fatigue crack growth property of AWJ peened aluminum alloy

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