Zum Zusammenhang zwischen Eigenschaften und Gefügestruktur mehrphasiger Werkstoffe. Teil III: Gefügestruktur und Elastizitätsmodul

Ondracek, G.

doi:10.1002/mawe.19780090110

Cited by 40 publications

(10 citation statements)

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“…In analogy to Eshelby's model [lo], homogeneous elastic fields appear in precipitates or inclusions, while in the matrix material inhomogeneous fields exist which decrease with the distance from the second phase. A new distribution of stress by superimposed fields leads to a quasihomogeneous stress-strain continuum obtained by simulating a two-phase material which is characterized by mean stress and strain [8]. This model is comparable with the averaging concept of Kroner [Ill in which each single grain is surrounded by an elastic, homogeneous crystal.…”

Section: Fundamental Considerationsmentioning

confidence: 93%

“…The rules of mixtures of first order correspond to simple averaging concepts like the formulae of Voigt [3], Reuss [4], and Hill [5] (VRH), whereas more exact descriptions of the elastic parameters of a multiphase alloy are given by the structure-property equations in which the volume fraction, shape, orientation, and orientation distribution of a second phase are taken into consideration [7,8]. The mean value of serial and parallel arrangement of two phases with different elastic properties leads to a relation in which the elastic property M' of the multiphase alloy depends only on the volume fractions,…”

Section: Fundamental Considerationsmentioning

confidence: 99%

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Contributions of the Different Phases of Two Nickel-Base Superalloys to the Elastic Behaviour in a Wide Temperature Range

Kuhn

Sockel

1990

phys. stat. sol. (a)

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The contributions of the different metallurgical phases to the Young's modulus E of a monocrystalline and a polycrystalline γ′‐hardened nickel‐base superalloy (MAR‐M002 mod. and MAR‐M247) are investigated in a wide temperature range. Theoretical rules of mixtures are applied to calculate the Young's modulus in dependence on the temperature. The model alloys Ni3Al, NiCrCoW, and TiC are used to obtain data for γ′‐precipitates, γ‐matrix material, and MC‐carbides. The presence of the γ′‐phase is assumed to be responsible for a strong change in the slopes of the Young's modulustemperature curves at high temperatures. The influence of porosity of the elastic behaviour has been investigated at different temperatures.

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Section: Fundamental Considerationsmentioning

confidence: 93%

Section: Fundamental Considerationsmentioning

confidence: 99%

Contributions of the Different Phases of Two Nickel-Base Superalloys to the Elastic Behaviour in a Wide Temperature Range

Kuhn

Sockel

1990

phys. stat. sol. (a)

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“…A more sensitive test for the validation of the correlation for Poisson's ratio given by Eq. (14), is a comparison between 17) can be used to predict the variation of Young's modulus with porosity. This is shown in Fig.…”

Section: Uranium Dioxidementioning

confidence: 99%

“…(1) can be derived for porous materials containing spherical pores using the elasticity theory from the treatment given in Ref. [14]. From the theories of physical acoustics one would expect the modulus to be at least a second degree polynomial function of ultrasonic velocity if Poisson's ratio remains invariant with porosity.…”

Section: Previous Workmentioning

confidence: 99%

Estimation of elastic properties of nuclear fuel material using longitudinal ultrasonic velocity – A new approach

Phani

Sanyal

Sengupta

2007

Journal of Nuclear Materials

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“…One existing model is that of computing the EModulus of a fibrereitiforced material (in %) when the materials that implement the composite are determined. [7,8] RI1 information on the construction materials are available through the Database Module. It consists of the name and identification and data to all relevant attributes of the construction materials.…”

Section: Modul Descriptionmentioning

confidence: 99%

AI in material design-an expert system for construction of composite material

Fathi-Torbaghan

Kern

Jańczak

[1991 Proceedings] Tenth Annual International Phoenix Conference on Computers and Communications

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1 Abstract t I iglily stressed engineering parts and components ofk i t require material properties, which can not be found within one specific material. This mismatch between strtictural requirements and material properties causes drastic consequences: either the cutback of functions or the usage of superior materials with properties, which are only partly be required. Both ways show major disadvantages. In the first case the coinponents show a reduced functionability, in the other case high material costs will result. A way out of this situation can be found by design a n d production of materials with properties identical to t.hose required. To gain this challenge computer based bystellis, e.g. expert systems, finite element methods, materials data bases etc. are essentially necessary. In this paper an artificial intelligence application on composite materials design will be presented. A first prototype of the system was implemented using the expert system shell KEE. Currently the system is under test and first results show, that it can be used as an adequate loo1 for composite materials design and optiiiiization.2 Introduction 111 all parts of' industry increasing demand require new inaterials with improved properties, which mostly cannot be found within one specific material. Therefore it is necessary to combine different materials forming a composite. In this way the respective material properties are assembled in the composite material. Although this technique is used widely e.g. in the aerospace industry [l], it is not the state of the art in the common industry like machine-, chemical processing plant-or car building industry. Nevertheless, there is no doubt t1ia.t many technical solutions show more or less short-828

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Zum Zusammenhang zwischen Eigenschaften und Gefügestruktur mehrphasiger Werkstoffe. Teil III: Gefügestruktur und Elastizitätsmodul

Cited by 40 publications

References 0 publications

Contributions of the Different Phases of Two Nickel-Base Superalloys to the Elastic Behaviour in a Wide Temperature Range

Contributions of the Different Phases of Two Nickel-Base Superalloys to the Elastic Behaviour in a Wide Temperature Range

Estimation of elastic properties of nuclear fuel material using longitudinal ultrasonic velocity – A new approach

AI in material design-an expert system for construction of composite material

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