Incorporating strain gradient effects in a multiscale constitutive framework for nickel-base superalloys

Tinga, Tiedo; Brekelmans, Wam Marcel; Geers, Mgd Marc

doi:10.1080/14786430802337089

Cited by 33 publications

(41 citation statements)

References 54 publications

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“…The developed multiscale model for the prediction of the superalloy mechanical behaviour covers several length scales [1], which is shown schematically in Figure 1a. The macroscopic length scale characterises the engineering level on which a finite element (FE) model is commonly used to solve the governing equilibrium problem.…”

Section: Multiscale Frameworkmentioning

confidence: 99%

“…Matrix constitutive model. The matrix phase constitutive behaviour is simulated by using a nonlocal strain gradient crystal plasticity model [1]. The basic ingredient of the model is the relation between the slip rates α γ and the resolved shear stresses τ α for all the slip systems α.…”

Section: Multiscale Frameworkmentioning

confidence: 99%

“…In the next sections, firstly the framework will be discussed, including the constitutive models for the matrix [1] and precipitate [4] phases, the developed damage model [2] and the modeling of the microstructure degradation [3]. But the focus of the present paper is on the application of the model to real gas turbine components.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, facilitated by the National Aerospace Laboratory NLR, a multiscale framework has been developed [1][2][3][4] that incorporates the effect of microstructure degradation on the mechanical response and damage accumulation. In the next sections, firstly the framework will be discussed, including the constitutive models for the matrix [1] and precipitate [4] phases, the developed damage model [2] and the modeling of the microstructure degradation [3].…”

Section: Introductionmentioning

confidence: 99%

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Application of a Multiscale Constitutive Framework to Real Gas Turbine Components

Tinga

Brekelmans

Geers

2011

AMR

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Abstract. A multiscale constitutive framework for Ni-base superalloys has been developed, in which an efficient unit cell is adopted to describe the γ/γ' microstructure morphology. The framework enables the prediction of the deformation and the creep and fatigue damage accumulation in CMSX-4 for a range of temperatures and stress levels. Moreover, the material microstructural degradation due to rafting and isotropic coarsening can be simulated, and the effects of this degradation on the alloy mechanical response can be quantified. The present paper focuses on the application of the model to real gas turbine components. A high pressure turbine blade finite element model is used to demonstrate the computational efficiency of the multiscale framework. Moreover, the location of critical regions and the life time are shown to differ from the results obtained from classical models that neglect the microstructure evolution.

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Section: Multiscale Frameworkmentioning

confidence: 99%

Section: Multiscale Frameworkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Application of a Multiscale Constitutive Framework to Real Gas Turbine Components

Tinga

Brekelmans

Geers

2011

AMR

Self Cite

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“…It should be noted that Norton creep law is only able to represent the second stage of creep behaviour and does not consider material behaviour at a microscopic level. 45 More complex models that take into account these effects are able to estimate the first and third stages as well 127,128 Creep rate = AT n s m…”

Section: Creepmentioning

confidence: 99%

A review of physics-based models in prognostics: Application to gears and bearings of rotating machinery

Cubillo

Perinpanayagam

Esperon-Miguez

2016

Advances in Mechanical Engineering

226

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Health condition monitoring for rotating machinery has been developed for many years due to its potential to reduce the cost of the maintenance operations and increase availability. Covering aspects include sensors, signal processing, health assessment and decision-making. This article focuses on prognostics based on physics-based models. While the majority of the research in health condition monitoring focuses on data-driven techniques, physics-based techniques are particularly important if accuracy is a critical factor and testing is restricted. Moreover, the benefits of both approaches can be combined when data-driven and physics-based techniques are integrated. This article reviews the concept of physics-based models for prognostics. An overview of common failure modes of rotating machinery is provided along with the most relevant degradation mechanisms. The models available to represent these degradation mechanisms and their application for prognostics are discussed. Models that have not been applied to health condition monitoring, for example, wear due to metal-metal contact in hydrodynamic bearings, are also included due to its potential for health condition monitoring. The main contribution of this article is the identification of potential physics-based models for prognostics in rotating machinery.

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Principles of Loads and Failure Mechanisms

Tinga

2013

Springer Series in Reliability Engineering

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The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. While the advice and information in this book are believed to be true and accurate at the date of publication, neither the authors nor the editors nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein.

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Incorporating strain gradient effects in a multiscale constitutive framework for nickel-base superalloys

Cited by 33 publications

References 54 publications

Application of a Multiscale Constitutive Framework to Real Gas Turbine Components

Application of a Multiscale Constitutive Framework to Real Gas Turbine Components

A review of physics-based models in prognostics: Application to gears and bearings of rotating machinery

Principles of Loads and Failure Mechanisms

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