Effects of temperature on fretting corrosion behaviors of gold-plated copper alloy electrical contacts

Ren, Wanbin; Wang, Peng; Ying-hua, FU; Pan, Cunfa; Song, Jing

doi:10.1016/j.triboint.2014.11.001

Cited by 32 publications

(11 citation statements)

References 18 publications

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“…1 Its main function is to transmit high-speed differential signals, single point signals, and high current between sub-card and backplane. 2 The performance of HSBC usually influences the reliability of whole system directly. Therefore, it is necessary to study the mechanical reliability of HSBC.…”

Section: Introductionmentioning

confidence: 99%

Simulation-based design and optimization and fatigue characteristics for high-speed backplane connector

Yuan

Wang

2019

Advances in Mechanical Engineering

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In high-speed interconnect systems, high-speed backplane connectors are widely utilized. Its mechanical reliability is related to the stability of entire application systems directly. Insertion-extraction force and fatigue characteristics are important factors that affect the reliability of high-speed backplane connectors. To enhance the reliability of high-speed backplane connectors, in this study, a single CAD/CAE parametric model of the contacts is established. Not only the dynamic analysis of the insertion and extraction process but also the electro-thermal-structure coupling of the contacts are carried out using finite element analysis. By changing the insertion position of male terminal, the length of female terminal, and the thickness of male terminal, the insertion-extraction force can be optimized. According to the simulation of the insertion-extraction force and the electric-thermal-structure coupling results, both the mechanical life of this connector and the thermal-mechanical fatigue life under electrifying condition are evaluated. The results show that the mechanical life and thermal-mechanical fatigue life were 376 cycles and 286 cycles, respectively. The design solutions can provide the reference for the structural design, optimization, and fatigue life prediction of high-speed backplane connector.

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Section: Introductionmentioning

confidence: 99%

Simulation-based design and optimization and fatigue characteristics for high-speed backplane connector

Yuan

Wang

2019

Advances in Mechanical Engineering

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“…Even if the oscillating loads are well below the static friction limit, they generally will lead to a repeated slip in the boundary region of the contact; this may cause progressive changing of the local form of the contacting partners and fretting fatigue. The problem of fretting wear attracts much attention because of its technological importance for such applications as wear in steam generator tubes 1 2 , biomedical implants 3 4 , electrical contacts 5 6 , corrosion and materials degradation 7 , dovetail blade roots of gas turbines 8 9 and many others. It remains an object of intensive experimental and theoretical investigation as there are still several open problems, especially concerning wear under complex load histories as well as development of principles of “anti-fretting design”.…”

mentioning

confidence: 99%

Universal limiting shape of worn profile under multiple-mode fretting conditions: theory and experimental evidence

Дмитриев

Voll²,

Psakhie

et al. 2016

Sci Rep

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We consider multiple-mode fretting wear in a frictional contact of elastic bodies subjected to a small-amplitude oscillation, which may include in-plane and out-of-plane translation, torsion and tilting (“periodic rolling”). While the detailed kinetics of wear depends on the particular loading history and wear mechanism, the final worn shape, under some additional conditions, occurs to be universal for all types and loading and wear mechanisms. This universal form is determined solely by the radius of the permanent stick region and the maximum indentation depth during the loading cycle. We provide experimental evidence for the correctness of the theoretically predicted limiting shape. The existence of the universal limiting shape can be used for designing joints which are resistant to fretting wear.

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“…There has been considerable previous work that has concentrated on failure models of connectors and on PIM from passive components. With regards to the degradation mechanisms of connectors, Ren conducted a series of tests on gold-plated contacts in the temperature range of 25-125°C and proposed a model for the degradation mechanisms of contacts under different temperatures [3,4]. Flowers and his colleagues studied the trends of resistance when connectors are subjected to random vibration, and analysed the effects of vibration amplitude and frequency on the resistance changes [5,6].…”

Section: Introductionmentioning

confidence: 99%

Identification and location of PIM faults in radio‐frequency circuits with multiple coaxial connectors using a neural network approach

Jin

Gao

Flowers

et al. 2019

IET Microwaves, Antennas & Propagation

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Coaxial connectors are widely used in radio‐frequency circuits and are a major non‐linear source of passive intermodulation (PIM), especially when they are subjected to environmental degradation. Accordingly, an effective and accurate method to locate the position of the PIM source in a communication system is of substantial value. By analysing the characteristics of different connectors, equivalent circuit models were developed to generate dynamic harmonics powers. On the basis of transmission line theory and simulations, the features of the IM products (IM3, IM5, and IM7) in a series circuit with the selected PIM source points were investigated. Using this information, a PIM fault diagnosis method for coaxial connectors in a circuit was developed employing a neural network. The IM products powers were obtained as feature parameters using a scattering parameter simulation of series circuit for three different connectors. Simulations were then conducted to generate training and testing samples. Finally, using the back‐propagation neural network algorithm, the fault modes were classified and the results show diagnosis accuracy was 96.72%.

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Effects of temperature on fretting corrosion behaviors of gold-plated copper alloy electrical contacts

Cited by 32 publications

References 18 publications

Simulation-based design and optimization and fatigue characteristics for high-speed backplane connector

Simulation-based design and optimization and fatigue characteristics for high-speed backplane connector

Universal limiting shape of worn profile under multiple-mode fretting conditions: theory and experimental evidence

Identification and location of PIM faults in radio‐frequency circuits with multiple coaxial connectors using a neural network approach

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