A Review of the Fatigue Strength of Shear Bolted Connections

Zampieri, Paolo; Curtarello, Andrea; Maiorana, Emanuele; Pellegrino, Carlo

doi:10.1007/s13296-018-0189-5

Cited by 24 publications

(4 citation statements)

References 53 publications

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“…Several similar studies also demonstrated the degradation in fatigue performance under the corrosion, especially in the chlorine-rich environment [10,16]. Zampieri [17] studied the fatigue strength of bolted connections, which indicates that corrosion can influence the fatigue life of the joint. Moreover, extended studies were done by Zampieri et al [18,19] that showed the degradation of the corroded bolted joint due to pitting corrosion.…”

Section: Literature Reviewmentioning

confidence: 91%

Corrosion-Fatigue Evaluation of Uncoated Weathering Steel Bridges

2019

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Uncoated weathering steel (UWS) bridges have been extensively used to reduce the lifecycle cost since they are maintenance-free and eco-friendly. However, the fatigue issue becomes significant in UWS bridges due to the intended corrosion process utilized to form the corrodent-proof rust layer instead of the coating process. In this paper, an innovative model is proposed to simulate the corrosion-fatigue (C-F) process in UWS bridges. Generally, the C-F process could be considered as two relatively independent stages in a time series, including the pitting process of flaw-initiation and the fatigue crack propagation of the critical pitting flaw. In the proposed C-F model, Faraday’s law has been employed at the critical flaw-initiation stage to describe the pitting process, in which the pitting current is applied to reflect the pitting rate in different corrosive environments. At the crack propagation stage, the influence of pitting corrosion is so small that it can be safely ignored. In simulating the crack propagation stage, the advanced NASGRO equation proposed by the NASA is employed instead of the classic Paris’ law, in which a modified fatigue limit is adopted. The fatigue limit is then used to determine the critical size of pitting flaws, above which the fatigue effect joins as a parallel driving force in crack propagation. The model is then validated through the experimental data from published articles at the initiation stage as well as the whole C-F process. Two types of structural steel, i.e., HPS 70W and 14MnNbq steel, have been selected to carry out a case study. The result shows that the C-F life can be notably prolonged in the HPS 70W due to the enhancement in fatigue strength and corrosion resistance. Besides, a sensitivity analysis has been made on the crucial parameters, including the stress range, stress ratio, corrosive environment and average daily truck traffic (ADTT). The result has revealed the different influence of the above parameters on the initiation life and propagation life.

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Section: Literature Reviewmentioning

confidence: 91%

Corrosion-Fatigue Evaluation of Uncoated Weathering Steel Bridges

2019

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“…3 However, bolted joints are also the weak point of mechanical structures in the harsh service environment. This is because the structure is easily exposed to various destructive factors, such as corrosion, 4 vibration, 5 impact, 6 as well as high temperature, stress concentrations, and pressure, 7 which can lead to corrosion, 8 loosening, 9,10 and cracking 11,12 damage at the structural joints that threaten structural safety. To address these structural safety challenges, the development of damage prevention and control mechanisms 13 as well as periodic health monitoring 14 would be effective instruments to guarantee the reliability of the joints.…”

Section: Introductionmentioning

confidence: 99%

A novel damage index integrating piezoelectric impedance and ultrasonic guided wave for damage monitoring of bolted joints

Liao

Sun

Wang

et al. 2023

Structural Health Monitoring

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The structural safety of bolted joints, one of the typical connection techniques utilized in engineering applications, is threatened by the harsh service environment. Herein, a novel damage index (DI) integrating piezoelectric impedance and ultrasonic guided wave is proposed for satisfying the damage monitoring needs of bolted joints. By integrating the two sensing techniques, the shortcomings of a single sensing technique in terms of signal interpretation, stability, and structural adaptability are eliminated. The novel damage severity factor DIZ-V is formed by fusing the damage indices DIZ and DIV weighted by multi-class DIs of the two sensing techniques. Thanks to DIZ-V and a damage mode identification factor presented in this paper, the damage modes and damage severity of early-stage bolt loosening and crack damage are identified. Furthermore, a novel dynamic superposition model (DSM) based on a dynamic-update baseline is developed to address the deficiency that the static baseline method (SBM) has. SBM utilizes the undamaged state signal as the baseline and has the problem of being prone to failure in the later-stage of monitoring. Thus, the phenomenon of nonlinear variation of DIZ-V caused by damage deterioration was avoided via DSM optimization. The feasibility and effectiveness of the proposed method were verified by conducting a series of practical damage identification tests on aluminum bolted joints. And the results demonstrated that the proposed technique could not only identify the severity and mode of damage, but also has excellent reliability. Therefore, the novel damage monitoring technique for bolted joints is a good complement to the existing techniques, which can provide a new strategy for damage monitoring.

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“…On the other hand, Satheesh Kumar et al [20] have performed a comparative analysis of stresses in the selected bolted lap connection. A comprehensive review on the fatigue strength analysis of shear bolted connections have been carried out in [21].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigations of an Asymmetric Multi-Bolted Connection Preloaded and Subjected to Monotonic Loads

Grzejda,

Kwiatkowski,

Parus

2023

Int Appl Mech

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The experimental tests of seven-bolted connection with an asymmetric contact area between the joined elements are presented. The research was divided into two stages. In the rst one, the connection was preloaded in a three-pass cycle. In the second stage, the connection was loaded with a monotonic alternating force applied at an angle of 30 degrees to the contact surface of the joined elements in order to generate compressive and shear forces in the connection. The tests were carried out with the use of the INSTRON 8850 testing machine. As a result of the research, the courses of forces in the bolts measured with use of resistance strain gauges and the relative displacements between the joined elements measured with an extensometer were shown. In the second part of the paper, the modelling of the connection in the convention of the nite element method is presented. The joined elements were modelled with use of spatial nite elements, and the fasteners -as a hybrid elements made of deformable beams, rigid heads and rigid nuts. The paper is completed with a comparison of the results obtained from the measurements and calculations, on the basis of which conclusions important from the point of view of the FEM analyst were drawn.

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A Review of the Fatigue Strength of Shear Bolted Connections

Cited by 24 publications

References 53 publications

Corrosion-Fatigue Evaluation of Uncoated Weathering Steel Bridges

Corrosion-Fatigue Evaluation of Uncoated Weathering Steel Bridges

A novel damage index integrating piezoelectric impedance and ultrasonic guided wave for damage monitoring of bolted joints

Experimental and Numerical Investigations of an Asymmetric Multi-Bolted Connection Preloaded and Subjected to Monotonic Loads

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