Fatigue life assessment of electromagnetic riveted carbon fiber reinforce plastic/aluminum alloy lap joints using Weibull distribution

Jiang, Hao; Luo, Tong; Li, Guangyao; Xu, Zhanping; Cui, Junjia

doi:10.1016/j.ijfatigue.2017.08.026

Cited by 61 publications

(16 citation statements)

References 27 publications

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“…e termination of the fatigue test was based on the case that the fatigue cycle of the sample exceeds 2 million cycles or the sample has obvious cracks, whichever came first. e fatigue test data of two groups of joints were statistically analyzed by the Weibull distribution method [26]. e mean fatigue life and other statistical data of each specimen of two groups of joints are shown in Table 7.…”

Section: Fatigue Testmentioning

confidence: 99%

Forming Quality and Fatigue Behavior of Self‐Piercing Riveted Joints of DP590 and AA6061 Plates

Jia

Huang

Zhong

2021

Advances in Materials Science and Engineering

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Two kinds of self-piercing riveted (SPR) joints were prepared with DP590 and AA6061 plates. The forming qualities of the joints were studied using the finite element method. The relationships between the fatigue life and failure forms of the joints with different upper plates were discussed. Finally, the failure mechanisms of the joints were analyzed. The results show that the maximum static tension of DA32 joints (with an upper plate of DP590) is significantly greater than that of the other kind, and the fatigue life of DA32 joints is always longer than that of AA40 joints when with a 2.0 mm thick AA6061 aluminum alloy upper plate under the same fatigue load. The failure mode of SPR joints changes obviously due to different upper plates, and the fatigue life of the joints can be effectively improved by reducing the microvibration wear.

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Section: Fatigue Testmentioning

confidence: 99%

Forming Quality and Fatigue Behavior of Self‐Piercing Riveted Joints of DP590 and AA6061 Plates

Jia

Huang

Zhong

2021

Advances in Materials Science and Engineering

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“…In the EMR process, the mutually exclusive EMF was an instantaneous, homogeneous, and stable impact force acting on the rivet [1,8]. The EMR device mainly consisted of two parts: discharge equipment (electromagnetic force setup) and riveting setup [9]. The EMF setup provided the riveting energy based on the resistor-inductor-capacitor (RLC) attenuating oscillating circuit, which was composed of capacitor banks, a resistor, an inductor, and coils [10].…”

Section: Introductionmentioning

confidence: 99%

“…Thus, many researchers paid attention to the mechanical properties and failure behaviors of electromagnetic riveted joints [6,11]. For instance, Jiang et al [9] investigated the mechanical behaviors (static tensile and fatigue properties) of Al-CFRP electromagnetically riveted lap joints. The results showed that the rivet squeezing effect under static shear loading caused the bending of the Al sheet and the damage of the CFRP sheet.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Parameter Analysis of Electromagnetic Riveting Process for Ti-6Al-4V Titanium Rivet

Qin

Liao

et al. 2021

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Electromagnetic riveting process (EMR) is a high-speed impact connection technology with the advantages of fast loading speed, large impact force and stable rivet deformation. In this work, the axisymmetric sequential and loose electromagnetic-structural coupling simulation models were conducted to perform the electromagnetic riveting process of a Ti-6Al-4V titanium rivet, and the parameter analysis of the riveting setup was performed based on the sequential coupled simulation results. In addition, the single-objective optimization problem of punch displacement was conducted using the Hooke–Jeeves algorithm. Based on the adaptive remeshing technology adopted in air meshes, the deformation calculated in the structural field was well transferred to the electromagnetic field in the sequential coupled model. Thus, the sequential coupling simulation results presented higher accuracy on the punch speed and rivet deformation than the loose coupling numerical model. The maximum relative difference of electromagnetic force (EMF) on driver plate and radial displacement in the rivet shaft was 34.86% and 13.43%, respectively. The parameter analysis results showed that the outer diameter and the height of the driver plate had a significant first-order effect on the response of displacement, while the platform height, transition zone height, angle, and transition zone width of the amplifier presented a strong interaction effect. Using the obtained results on the optimal structural parameters, the punch speed was effectively improved from 6.13 to 8.12 m/s with a 32.46% increase. Furthermore, the displacement of the punch increasing from 3.38 to 3.81 mm would lead to an 80.55% increase in the maximum radial displacement of the rivet shaft. This indicated that the deformation of the rivet was efficiently improved by using the optimal rivet model.

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“…The mechanical joints such as bolted, riveted, and pinned connections are among the most significant methods in modern aircraft structures and assembly due to their advantages of high reliability, large load transfer, and ease of replacement. [1][2][3][4][5][6][7] Such joints are usually exposed to the cyclic loads and often result at fatigue failures as stress concentration exists around the fastener hole edges. 8,9 Moreover, the process of drilling may also cause the rough surface of hole wall surfaces, which is possible to commence fatigue crack initiation and growth under external cyclic loading.…”

Section: Introductionmentioning

confidence: 99%

A new model for stress analysis in pin–Plate interference fit joints under tension loading

Zheng

Cao

Zuo

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part G:

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The decrease of stress amplitude is generally believed as the mechanism of fatigue life enhancement in interference fit joints under cyclic loading for each load cycle. In order to exactly estimate it, a new analytical model was presented. In this model, influences of mass, geometry, and plastic deformation are considered to modify and improve the spring model, and, moreover, the stress amplitude at the smallest crossing section is investigated. Taking these factors into account, stress amplitude decrease of various interference values can be calculated more accurately; therefore, the analytical solutions have good agreement with the finite element numerical and experimental results under different interference values and load levels. The analytical model indicates that the decrease ratio of stress amplitude is of a certain value for a specific interference value with the external load under the critical value. Furthermore, the decrease ratio of stress amplitude mainly depends on the stiffness of the pin and plate, which is mostly affected by the geometric shapes and plastic deformation ranges of the pin and plate. In addition, raising the interference value leads to larger stress amplitude reduction since the plastic deformation areas expand with the increment of interference values.

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Fatigue life assessment of electromagnetic riveted carbon fiber reinforce plastic/aluminum alloy lap joints using Weibull distribution

Cited by 61 publications

References 27 publications

Forming Quality and Fatigue Behavior of Self‐Piercing Riveted Joints of DP590 and AA6061 Plates

Forming Quality and Fatigue Behavior of Self‐Piercing Riveted Joints of DP590 and AA6061 Plates

Numerical Simulation and Parameter Analysis of Electromagnetic Riveting Process for Ti-6Al-4V Titanium Rivet

A new model for stress analysis in pin–Plate interference fit joints under tension loading

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