Effect of loading time on high-cycle range impact fatigue strength and impact fatigue crack growth rate.

Tanaka, Tsuneshichi; Kinoshita, Ken-ichiroh; Nakayama, Hideaki

doi:10.1299/kikaia.55.970

Cited by 3 publications

(3 citation statements)

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“…The most popular approach is to relate the cumulative time N F T to the maximum stress amplitude in the impact s max (Ninomi et al, 1991;Tanaka, Kinoshita, & Nakayama, 1992;Yamamoto et al, 2003;Yu, Peter, & Huang, 1999): (22.27) in which N F is the number of cycles to failure, T is the loading time, and C and m are empirical IF parameters. In this work, the relation described by Eqn (22.26) will be referred to as the accumulated load-time model.…”

Section: Accumulated Load-time Modelmentioning

confidence: 99%

Dynamic fractures of adhesively bonded carbon fibre-reinforced polymeric joints

Casas-Rodríguez¹,

Ashcroft

Silberschmidt

2015

Structural Integrity and Durability of Advanced Composites

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Section: Accumulated Load-time Modelmentioning

confidence: 99%

Dynamic fractures of adhesively bonded carbon fibre-reinforced polymeric joints

Casas-Rodríguez¹,

Ashcroft

Silberschmidt

2015

Structural Integrity and Durability of Advanced Composites

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“…It was demonstrated that IF strength of the joints depended on the stress magnitude and the loading time. In addition, a phenomenological model to predict failure in impact conditions was suggested based on the cumulative time (N f T ) and the maximum stress amplitude in the impact (σ max ) in the following form [23][24][25][26] …”

Section: Adhesive Joints: Responses To Fatigue and Impactmentioning

confidence: 99%

Impact Fatigue of Adhesive Joints

Silberschmidt

Casas-Rodríguez

Ashcroft

2008

KEM

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Abstract:One of the forms of a vibro-impact effect in engineering components is impact fatigue (IF) caused by a cyclic repetition of low energy, low-velocity impacts, for instance, in aerospace structures. It can have a highly detrimental impact on performance and reliability of such components, exacerbated by the fact that in many cases it is disguised in loading histories by non-impact loading cycles with higher amplitudes. Since the latter are traditionally considered as most dangerous in standard fatigue, IF has not yet received deserved attention; it is less studied and practically unknown to specialists in structural integrity. Though there is a broad understanding of the danger of high-energy single impacts, repetitive impacting of components has been predominantly studied for very short series. This paper aims at the analysis of IF of adhesively bonded joints, which are becoming more broadly used in aerospace applications. The study is implemented for two types of typical adherends -an aluminium alloy and a carbon-fibre reinforced composite -and an industry-relevant epoxy adhesive. Various stages of fatigue crack development in adhesively bonded joints are studied for the conditions of standard and IF. The results obtained -in terms of crack growth rates, fatigue lives, and microstructures of fracture surfaces -are compared for the two regimes in order to find similarities and specific features.

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“…Only high-impact wheels that have a defect present pose a significant risk of failure. It has been reported that the crack growth rate of metallic materials under impact fatigue is significantly higher than under non-impact fatigue [4,5].…”

Section: Introductionmentioning

confidence: 99%

Structural Health Monitoring of Railroad Wheels Using Wheel Impact Load Detectors

Stratman

Liu

Mahadevan

2007

J Fail. Anal. and Preven.

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This paper proposes two quantitative criteria for removing railroad wheels from service, based on realtime structural health monitoring trends that are developed using data collected from trains while in service. The data is collected using wheel impact load detectors (WILDs). These impact load trends are able to distinguish wheels with a high probability of failure from high-impact wheels with a low probability of failure. The trends indicate the critical wheels that actually need to be removed, while at the same time allowing wheels that aren't critical to remain in service. As a result, the safety of the railroad will be much improved by being able to identify and remove wheels that have high likelihood of causing catastrophic failures.

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Effect of loading time on high-cycle range impact fatigue strength and impact fatigue crack growth rate.

Cited by 3 publications

References 0 publications

Dynamic fractures of adhesively bonded carbon fibre-reinforced polymeric joints

Dynamic fractures of adhesively bonded carbon fibre-reinforced polymeric joints

Impact Fatigue of Adhesive Joints

Structural Health Monitoring of Railroad Wheels Using Wheel Impact Load Detectors

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