Instructions for a new method of inclusion rating and correlations with the fatigue limit

In this paper data on fatigue lifetime of nanocrystalline (nc) Ni samples is presented. The nc-Ni samples show high lifetimes and can resist large stress amplitudes. Furthermore a new method to determine the fatigue limit based on a Fourier analysis [7] is presented. First results of a load increase test suggest strong parallels to thermal and resistive measurements which can be used to determine the fatigue limit. Microstructural investigations on as received and failed samples show a strong increase in grain size induced by the cyclic loading. The processes behind this are not understood so far and will be investigated in the future.

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Instructions for a New Method of Inclusion Rating and Correlations with the Fatigue Limit

Metal Fatigue ◽

10.1016/b978-008044064-4/50017-7 ◽

2002 ◽

pp. 321-350 ◽

Cited By ~ 1

Keyword(s):

Fatigue Limit ◽

New Method

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A New Method to Determine the Fatigue Limit and the p-S-N Curve

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.248.256 ◽

2012 ◽

Vol 248 ◽

pp. 256-261 ◽

Cited By ~ 2

Author(s):

Jian Ming Zhai ◽

Xiao Yang Li

Keyword(s):

Density Distribution ◽

Probability Density ◽

Fatigue Limit ◽

Fatigue Test ◽

Conditional Probability ◽

Mechanical Design ◽

New Method ◽

Conditional Probability Density ◽

Probability Density Distribution ◽

Material Fatigue

The performances of material fatigue can be illustrated by the S-N curve, the p-S-N curve and the fatigue limit, which are very important to engineering and the mechanical design. Recently, the author proposed a new method to determine a conditional probability density distribution surface(CPDDS) of the material, and the surface can reflects most properties of the material’s fatigue. Methods to obtain the theoretical fatigue limit and the p-S-N curve are introduced in this paper on the basis of previous study. The methods are applied on the fatigue test data of C45 steel, and the p-S-N curves that obtained by various methods are compared in this paper.

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Instructions for a New Method of Inclusion Rating and Correlations with the Fatigue Limit

Journal of Testing and Evaluation ◽

10.1520/jte11840j ◽

1994 ◽

Vol 22 (4) ◽

pp. 318 ◽

Cited By ~ 59

Author(s):

DR Petersen ◽

Y Murakami ◽

T Toriyama ◽

EM Coudert

Keyword(s):

Fatigue Limit ◽

New Method

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Selective Sampling and Orientation of Non-Homogeneous Tissues

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100100238 ◽

1968 ◽

Vol 26 ◽

pp. 98-99

Author(s):

C. C. Clawson ◽

L. W. Anderson ◽

R. A. Good

Keyword(s):

Electron Microscopy ◽

Electron Microscope ◽

Light Microscopy ◽

Random Sampling ◽

New Method ◽

Microscope Examination ◽

Small Areas ◽

Selective Sampling ◽

Large Numbers ◽

Specific Orientation

Investigations which require electron microscope examination of a few specific areas of non-homogeneous tissues make random sampling of small blocks an inefficient and unrewarding procedure. Therefore, several investigators have devised methods which allow obtaining sample blocks for electron microscopy from region of tissue previously identified by light microscopy of present here techniques which make possible: 1) sampling tissue for electron microscopy from selected areas previously identified by light microscopy of relatively large pieces of tissue; 2) dehydration and embedding large numbers of individually identified blocks while keeping each one separate; 3) a new method of maintaining specific orientation of blocks during embedding; 4) special light microscopic staining or fluorescent procedures and electron microscopy on immediately adjacent small areas of tissue.

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