Statistical analysis of short crack density field at meso-scale level

Bo Ao; Dinghua Zhang; Guanhua Wu

Statistical analysis of short crack density field at meso-scale level

Bo Ao, Dinghua Zhang, Guanhua Wu

School of Mechanical Engineering

Nanchang Hangkong University

Research output: Contribution to journal › Article › peer-review

Abstract

Circular sectional specimens were designed by the characteristics of Micro-CT, and a LY12 alloy specimen containing fatigue crack was acquired through fatigue test under displacement control. The specimen was scanned and reconstructed by means of Micro-CT, images of density field were obtained, and the 3D crack morphology was extracted. Experimental results reveal that there exist uneven, rough crack surface within the specimen. Statistical analysis of density field was quantified at meso-scale level, including interior, adjacent region, path of propagation of the crack and towards both sides of crack. The statistical results show that densities of region of crack, adjacent region are lower than normal region, and the damage of fatigue is uneven.

Original language	English
Pages (from-to)	482-485+486
Journal	Zhongguo Jixie Gongcheng/China Mechanical Engineering
Volume	21
Issue number	4
State	Published - 25 Feb 2010

Keywords

Computed tomography(CT)
Density field
Displacement control
Short crack

Cite this

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title = "Statistical analysis of short crack density field at meso-scale level",

abstract = "Circular sectional specimens were designed by the characteristics of Micro-CT, and a LY12 alloy specimen containing fatigue crack was acquired through fatigue test under displacement control. The specimen was scanned and reconstructed by means of Micro-CT, images of density field were obtained, and the 3D crack morphology was extracted. Experimental results reveal that there exist uneven, rough crack surface within the specimen. Statistical analysis of density field was quantified at meso-scale level, including interior, adjacent region, path of propagation of the crack and towards both sides of crack. The statistical results show that densities of region of crack, adjacent region are lower than normal region, and the damage of fatigue is uneven.",

keywords = "Computed tomography(CT), Density field, Displacement control, Short crack",

author = "Bo Ao and Dinghua Zhang and Guanhua Wu",

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language = "英语",

volume = "21",

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T1 - Statistical analysis of short crack density field at meso-scale level

AU - Ao, Bo

AU - Zhang, Dinghua

AU - Wu, Guanhua

PY - 2010/2/25

Y1 - 2010/2/25

N2 - Circular sectional specimens were designed by the characteristics of Micro-CT, and a LY12 alloy specimen containing fatigue crack was acquired through fatigue test under displacement control. The specimen was scanned and reconstructed by means of Micro-CT, images of density field were obtained, and the 3D crack morphology was extracted. Experimental results reveal that there exist uneven, rough crack surface within the specimen. Statistical analysis of density field was quantified at meso-scale level, including interior, adjacent region, path of propagation of the crack and towards both sides of crack. The statistical results show that densities of region of crack, adjacent region are lower than normal region, and the damage of fatigue is uneven.

AB - Circular sectional specimens were designed by the characteristics of Micro-CT, and a LY12 alloy specimen containing fatigue crack was acquired through fatigue test under displacement control. The specimen was scanned and reconstructed by means of Micro-CT, images of density field were obtained, and the 3D crack morphology was extracted. Experimental results reveal that there exist uneven, rough crack surface within the specimen. Statistical analysis of density field was quantified at meso-scale level, including interior, adjacent region, path of propagation of the crack and towards both sides of crack. The statistical results show that densities of region of crack, adjacent region are lower than normal region, and the damage of fatigue is uneven.

KW - Computed tomography(CT)

KW - Density field

KW - Displacement control

KW - Short crack

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M3 - 文章

AN - SCOPUS:77951238573

SN - 1004-132X

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SP - 482-485+486

JO - Zhongguo Jixie Gongcheng/China Mechanical Engineering

JF - Zhongguo Jixie Gongcheng/China Mechanical Engineering

IS - 4

ER -

Statistical analysis of short crack density field at meso-scale level

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Keywords

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