An investigation on the crack growth in aluminum alloy 7075-T6 under cyclic mechanical and thermal loads

Kakavand, Erfan; Seifi, Rahman; Abolfathi, Mostafa

doi:10.1016/j.tafmec.2022.103585

Cited by 11 publications

(6 citation statements)

References 29 publications

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“…This work used purely reversed cyclic loading at 5 Hz frequency and 10.55 kN from the uncracked ligament to the final crack length to induce the pre-cracked at the notch [29,35].…”

Section: Sample Preparationmentioning

confidence: 99%

“…This testing machine achieves 10842 cycles at a 5 Hz frequency. The experiment used a load ratio of R=0.1 [29,32].…”

Section: Experimental Fracture Toughness Propertiesmentioning

confidence: 99%

“…Three alternative approaches, experimental using the cycle-by-cycle method, analytical formula prediction, and extended finite element analysis (XFEA), were used to study super alloys' fatigue fracture growth behaviour. The crack extension was computed using the crack development law based on the crack driving force and th) [29]. Compared to experimental results, it was discovered that, despite being conservative, the expected FCG behaviour by analytical and finite element analysis (FEA) approaches was generally accurate [30].…”

Section: Introductionmentioning

confidence: 99%

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Simulation and experimentation crack analysis of annealed TC4 ELI alloy in the room and body fluid environment

Jha

Ajit

2023

Preprint

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A B S T R A C T Simulation and experimentation crack analysis of annealed TC4 ELI alloy in room and body fluid environments are studied in this research work. The crack morphology of the compact-tension specimen is thoroughly investigated. The critical crack size based on the authenticated fracture toughness is preconceived. The crack initiation and growth are performed and analysed at 5 Hz and 10.55 kN fatigue load. The failure mechanisms and microstructural morphology are explored to inspect the fractured surface. The dipped component’s (Body fluid environment) fracture toughness and life are 3.6% and 35%, respectively, less than the undipped sample. The experimental life of the undipped specimen is observed as 26.252 million cycles, whereas for dipped, it is marked as 16.99 million cycles which shows significant degradation of component life.

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“…This work used purely reversed cyclic loading at 5 Hz frequency and 10.55 kN from the uncracked ligament to the final crack length to induce the pre-cracked at the notch [29,35].…”

Section: Sample Preparationmentioning

confidence: 99%

“…This testing machine achieves 10842 cycles at a 5 Hz frequency. The experiment used a load ratio of R=0.1 [29,32].…”

Section: Experimental Fracture Toughness Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simulation and experimentation crack analysis of annealed TC4 ELI alloy in the room and body fluid environment

Jha

Ajit

2023

Preprint

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“…Piezoelectric materials are widely used in a variety of technical fields, including underwater acoustic testing, ultrasonic transducers and non-destructive testing [1][2][3][4][5][6][7][8]. During the operational process, piezoelectric materials experience diverse forms of losses, as well as energy absorption and release, resulting in self-heating issues [9][10][11][12]. These losses primarily manifest in three categories: elastic loss, dielectric loss, and piezoelectric loss.…”

Section: Introductionmentioning

confidence: 99%

Determination of elastic loss of piezoelectric materials by impedance curve fitting using intelligent algorithms

Gao,

Xian,

Chen

et al. 2024

Phys. Scr.

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Understanding the loss parameters of piezoelectric materials is crucial for designing effective piezoelectric sensors. Traditional measurement techniques to obtain the elastic loss parameters are primarily through three methods, the 3dB bandwidth, impedance fitting ways and ultrasonic attenuation. However, the elastic loss obtained using these three methods are all constant and frequency-independent. Therefore, a fast and accurate method is needed to acquire the elastic loss of piezoelectric materials. This paper introduces a novel approach for calculating elastic loss parameters using impedance curve fitting using intelligent algorithms. A frequency-dependent second-order elastic loss model of piezoelectric material is established. Then, genetic algorithms are introduced to acquire the optimal elastic loss parameters. Results show excellent agreement between theoretical and experimental impedance, with less than a 5% error. elastic loss parameters obtained through impedance curve using intelligent algorithms match those from stress experiments, with an error of less than 6%. This method offers a rapid, precise, and cost-effective approach to obtain frequency-dependent second-order elastic loss parameters of piezoelectric materials.

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“…Fatigue crack growth rate (FCGR) was a mechanical property index representing the ability of materials to resist fatigue crack growth (FCG). In previous studies, researchers had mainly studied the effects of load [2][3][4], stress ratio [5], heat treatment [6][7], and material defects [8][9] on fatigue properties.…”

Section: Introductionmentioning

confidence: 99%

Study on the effect of Cu addition on fatigue crack growth behavior of high-strength Al-1.2Mg-1.2Si alloy

Zhang,

Yan,

et al. 2023

J. Phys.: Conf. Ser.

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This work investigated effect of Cu addition on fatigue crack growth rate and fatigue fracture morphology of Al-1.2Mg-1.2Si alloy by fatigue test machine and Scanning Electron Microscope. It revealed that effect of Cu on the fatigue crack growth rate of these alloys was related to Cu content. When the Cu content was 0.18, there did no significant influence on fatigue crack growth ability. But when Cu addition was raised to 0.37, the fatigue cracks growth resistance was significantly reduced. However, Cu addition did not significantly affect the fatigue fracture mode of the alloys. The ductile fracture was main fracture mode on this alloy.

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An investigation on the crack growth in aluminum alloy 7075-T6 under cyclic mechanical and thermal loads

Cited by 11 publications

References 29 publications

Simulation and experimentation crack analysis of annealed TC4 ELI alloy in the room and body fluid environment

Simulation and experimentation crack analysis of annealed TC4 ELI alloy in the room and body fluid environment

Determination of elastic loss of piezoelectric materials by impedance curve fitting using intelligent algorithms

Study on the effect of Cu addition on fatigue crack growth behavior of high-strength Al-1.2Mg-1.2Si alloy

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