The influence of surface coatings on the fatigue behaviour of aero engine materials

Rhys-Jones, T.N.; Cunningham, Thomas P.

doi:10.1016/0257-8972(90)90110-x

Cited by 27 publications

(12 citation statements)

References 2 publications

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“…Neben konstruktiven Parametern, wie beispielsweise der Einschraubtiefe, dem Mutternwerkstoff und auch dem Fertigungsverfahren bei der Mutterngewindefertigung, muss dem Oberflächensystem, bestehend aus Korrosionsschutz und Schmierstoff ein ausgeprägter Einfluss auf die Beanspruchbarkeit zugewiesen werden [3,[10][11][12][13]. In Abhängigkeit der Wahl des Beschichtungssystems besteht ein signifikanter Einfluss auf die Lebensdauer [14]. Die rechnerische Auslegung erfolgt im Maschinen-und Anlagenbau nach der VDI-Richtlinie 2230 (Verein Deutscher Ingenieure) [15].…”

Section: Einleitung Und Problemstellungunclassified

Influence of lubrication systems on the fatigue strength of bolted joints

Kraemer,

Stähler,

Klein

et al. 2023

Materialwissenschaft Werkst

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Das Ermüdungsverhalten von Schraubenverbindungen ist infolge der hohen Kerbwirkung für viele Anwendungen versagenskritisch. Die Lebensdauer wird signifikant durch das Oberflächensystem, bestehend aus Korrosionsschutz und Schmierstoff beeinflusst. Für die Berücksichtigung des Oberflächeneinflusses in der Auslegung von Schraubenverbindungen werden in diesem Artikel systematisch experimentelle Untersuchungen für einen ausgewählten Basecoat und verschiedene Schmierstoffsysteme vorgestellt. Die Grundlage bilden Ermüdungsversuche an Schraubenverbindungen, unterstützt durch ausgewählte Methoden der Werkstoffanalytik zur fraktografischen Bewertung der Bruchflächen. Für die Bewertung der Schädigungsentwicklung wird ein Verfahren vorgeschlagen, das eine reproduzierbare Identifikation des Anrisszeitpunktes und eine Bewertung der Rissfortschrittsphase ermöglicht.

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Section: Einleitung Und Problemstellungunclassified

Influence of lubrication systems on the fatigue strength of bolted joints

Kraemer,

Stähler,

Klein

et al. 2023

Materialwissenschaft Werkst

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“…In addition to the design parameter, such as the depth of engagement, the nut material and also the manufacturing process for the nut thread itself [3], the surface system, consisting of corrosion protection and a lubricant, has a significant influence on the fatigue strength [11][12][13][14]. Depending on the choice of coating system, there is a significant influence on the lifetime [15,16]. In mechanical engineering and plant construction, the design process is carried out in accordance with the VDI guideline 2230 (Verein Deutscher Ingenieure, Association of German Engineers) [17].…”

Section: Introductionmentioning

confidence: 99%

“…There is a need to investigate in more detail the influence of surface systems with additionally applied lubricants with a focus on the mechanisms in order to understand the failure development, beginning with crack initiation. Test results from various research projects show that not only does the corrosion protection of hot-dip galvanized components have an influence on the fatigue strength, but the presence of a coating system in principle also has an adverse effect on the lifetime [4,[10][11][12][13][14][15][16]. In ref.…”

Section: Introductionmentioning

confidence: 99%

Influence of Lubrication Systems on the Fatigue Strength of Bolted Joints

et al. 2022

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The fatigue behavior of bolted joints is critical to failure for many applications due to the high notch effect. Among other parameters, the lifetime is based on the influence of the surface system, consisting of corrosion protection and lubricant. With the intention of considering the surface system in the design and dimensioning process of bolted joints, experimental investigations are carried out systematically for an exemplary selected basecoat and various lubricant systems. The basis is given by fatigue tests supported by selected methods of material analysis for the fractographic evaluation. A reproducible method to determine the crack initiation as well as the crack propagation is developed and used for the evaluation of lubricant systems. Defined damage can be reproducibly assigned on the basis of a critical frequency change rate of the resonance test machine. A high durability of the friction in the load-bearing contact (e.g., greases) reduces the stress and delays the crack initiation. Lubricants which are able to creep (e.g., oil) slow down the crack propagation and increase the lifetime, which is proved by a higher number of cycles to failure and an increased fatigue strength.

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“…High‐temperature thermal components such as gas turbine rotor, 1 fossil fuel plant pressurized vessel, 2,3 and aeroengine combustion structure 4 may fail due to the long‐term accumulated damage caused by creep, fatigue, and creep–fatigue (CF) interaction at elevated temperature. In industrial application, it is inevitably required to evaluate the material properties and residual life of such in‐service components, which has led to the development of nondestructive or “quasi” nondestructive techniques 5 .…”

Section: Introductionmentioning

confidence: 99%

A miniaturized thin‐plate low cycle fatigue test method at elevated temperature

Maskill

Zhou

et al. 2022

Fatigue Fract Eng Mat Struct

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This study aims to develop a high-temperature low cycle fatigue test method using a nonstandard miniature thin-plate specimen in order to characterize the cyclic viscoplasticity behavior of a component material. For demonstration, fully reversed strain-range controlled low cycle fatigue and creep-fatigue tests at 600 C have been performed for a martensitic steel using standard-sized fullscale specimens and miniaturized thin-plate specimens, respectively. Because the displacement is not directly measured from the uniform gauge section of the miniaturized specimen, a geometry-dependent scaling factor is obtained and used to convert the uniaxial strain. The results obtained are shown that the miniaturized test method developed in this work has exhibited a clear possibility to produce comparable low cycle fatigue data with those that are normally obtained by conventional standard specimen tests.

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The influence of surface coatings on the fatigue behaviour of aero engine materials

Cited by 27 publications

References 2 publications

Influence of lubrication systems on the fatigue strength of bolted joints

Influence of lubrication systems on the fatigue strength of bolted joints

Influence of Lubrication Systems on the Fatigue Strength of Bolted Joints

A miniaturized thin‐plate low cycle fatigue test method at elevated temperature

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