Nondestructive evaluation of elastic parameters of sintered iron powder compacts

Panakkal, J.P.; Willems, H.; Arnold, W.

doi:10.1007/bf00585456

Cited by 75 publications

(32 citation statements)

References 8 publications

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“…The elastic properties of P/M materials depend upon a number of parameters including porosity, pore distribution, pore shape and orientation, chemical composition and processing conditions [1,2]. Porosity, inherent in P/M components, affects the elastic properties substantially.…”

Section: Elastic Properties Of Powder Metal Alloys and Compositesmentioning

confidence: 99%

See 1 more Smart Citation

Determination of Dynamic Elastic Properties of Powder Metallurgy Components

Parthasarathi

Prucher

et al. 1993

Review of Progress in Quantitative Nondestructive Evaluation

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Section: Elastic Properties Of Powder Metal Alloys and Compositesmentioning

confidence: 99%

“…(1) (2) where EL is the longitudinal modulus, p, the density, V L' the velocity of the longitudinal waves, f, the frequency and A. the wavelength. Ultrasonic velocity techniques of elastic property measurement utilize a form of equation 1, whereas resonant frequency techniques use a form of equation 2.…”

Section: Experimental Techniquesmentioning

confidence: 99%

Determination of Dynamic Elastic Properties of Powder Metallurgy Components

Parthasarathi

Prucher

et al. 1993

Review of Progress in Quantitative Nondestructive Evaluation

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“…To achieve this objective, various empirical and theoretical relationships have been proposed in the literature, [4][5][6] for ceramics and metal compacts. Among these empirical models, the early work of Panakkal et al [7] and the recent work of Yeheskel [8] relating to the elastic behavior of sintered iron powder need to be specifically mentioned. Panakkal et al [7] had derived a linear relation between the effective modulus (M) and the ultrasonic longitudinal velocity (V L ), based on the theory of elasticity.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Elastic Behavior of Sintered Metal Powder from the Ultrasonic Velocities of Green Compacts

Phani

Sanyal

2008

Metall Mater Trans A

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A novel procedure for the estimation of the elastic properties of the sintered and compacted metal powders from the ultrasonic velocities of the green compact alone has been proposed in this article. The methodology has been validated for sintered iron powder and copper powder compacts as well as for consolidated silver powder compacts of various processing histories, powder sizes, and pore morphology. The predicted elastic moduli, including the derived modulus (Poisson's ratio), are found to be in reasonably good agreement with the measured data reported in the literature. The proposed method can be developed as a potent tool for the quantitative nondestructive evaluation (QNDE) of powder metallurgy products.

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“…[8][9][10] show that the decreasing trend in Poisson's ratio changed at a certain porosity. For a porosity above 20%, almost all the pores became connected to each other.…”

Section: Effects Of Iron Powder Type On Elastic Modulimentioning

confidence: 99%

“…•¬ (9) Where, Eo was E at P=0; and a, b, and KE were experimental constants. When a and n were 1 and 3.4, respectively.…”

Section: Effects Of Iron Powder Type On Elastic Modulimentioning

confidence: 99%

Poisson's Ratio of Sintered Materials for Structural Machine Parts

Hirose

Asami

Fujiki

et al. 2004

J. Jpn. Soc. Powder Powder Metallurgy

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The relationships between Young's modulus, shear modulus and Poisson's ratio of sintered materials and porosity were investigated for use as practical P/M machine parts. Three types of steel powders were prepared and then compacted, sintered, and heat-treated under various conditions. Porosity had the greatest influence on Young's modulus, shear modulus, and Poisson's ratio. Especially, Poisson's ratio was affected by the pore shape, which depended on the type of powder, sintering temperature and atmosphere, and heat treatment.

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Nondestructive evaluation of elastic parameters of sintered iron powder compacts

Cited by 75 publications

References 8 publications

Determination of Dynamic Elastic Properties of Powder Metallurgy Components

Determination of Dynamic Elastic Properties of Powder Metallurgy Components

Prediction of Elastic Behavior of Sintered Metal Powder from the Ultrasonic Velocities of Green Compacts

Poisson's Ratio of Sintered Materials for Structural Machine Parts

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