PROCESS ZONE SIZE FAILURE CRITERION AND PROBABILISTIC FRACTURE ASSESSMENT CURVES FOR CERAMICS

被引：36

作者：

ANDO, K

KIM, BA

IWASA, M

OGURA, N

机构：

[1] Department of Energy Engineering, Yokohama National University, Yokohama

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 1992年 / 15卷 / 02期

关键词：

D O I：

10.1111/j.1460-2695.1992.tb00044.x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Data of fracture toughness and fracture stress of ceramics, generally show considerable size effects and scatter. This presents problems for the integrity of structural ceramics. Fracture mechanics test results on Si3N4 and Al2O3 reveal a sensitivity to crack size and the necessity to invoke probabilistic concepts to evaluate their integrity. A new failure criterion is proposed here, based on the existence of a crack-tip process zone. A probabilistic failure assessment curve is also proposed to quantitatively evaluate reliability.

引用

页码：139 / 149

页数：11

共 18 条

[1]

Kimoto H., Usami S., Miyata H., Relationship between strength and flow size in glass and polycrystalline ceramics, Transactions of the Japan Society of Mechanical Engineers Series A, 51-471, pp. 2482-2488, (1985)

[2]

Taniguchi Y., Kitazumi J., Yamada T., Bending stress analysis of ceramics based on the statistical theory of stress and fracture location, J. Jap. Soc. Mater. Sci., 38-430, pp. 777-782, (1988)

[3]

Machida T., Usami S., Takahashi I., Effect of flow size on elevated temperature static fatigue limit of silicon nitride, Jap. Soc. mech. Engrs, 53-492, pp. 1558-1565, (1987)

[4]

Takahashi I., Usami S., Nakakado K., Miyata H., Shida S., Effect of defect size and notch root radius on fracture strength of engineering ceramics, J. Ceram. Soc. Jap., 93, pp. 186-194, (1985)

[5]

de los Rios E.R., Ando K., Biddulph R.H., Fracture and defect assessment of ceramic composites, Fatigue Fract. Engng Mater. Struct., 13, pp. 431-442, (1990)

[6]

Usami S., Kimoto H., Takahashi I., Shida S., Strength of ceramics materials containing small flows, Engng Fract. Mech., 23, pp. 745-761, (1986)

[7]

Miyata H., Nakakado K., Kimoto H., Effect of micro‐damage on fracture strength of structural ceramics, J. Soc. Strength Fract. Mater., 21, pp. 45-59, (1986)

[8]

Davige R.W., The Mechanical Behaviour of Ceramics, (1979)

[9]

Kishi T., Non‐destructive inspection and reliability of advanced materials, J. Jap. Soc. mech. Engrs, 90-821, pp. 463-467, (1987)

[10]

Miyata N., Strength and fracture toughness of ceramic matrix particulate composites, Journal of the Society of Materials Science, Japan, 37-415, pp. 361-370, (1988)

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