Double cracking in brittle cylindrical specimens subjected to quenching

Weijing He; Haiyan Li; Siu Lun Fok; J. Derek Jackson; Jan R. Wright

doi:10.1016/j.nucengdes.2006.09.041

Double cracking in brittle cylindrical specimens subjected to quenching

Weijing He, Haiyan Li, Siu Lun Fok, J. Derek Jackson, Jan R. Wright

Restorative Sciences

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Abstract

A series of quench tests on hollow cylindrical specimens made of the machinable ceramic, Pyrophyllite, has been performed. The specimens consistently fractured with two diametrically opposite longitudinal cracks. Finite element analysis indicates that the primary crack occurred at the stage when the strain energy of the cylinder reached its maximum during the thermal transient process, while the secondary crack was caused by stress waves generated following the primary crack. This is supported by experimental observation of the time of fracture and the crack morphology. The work reported here helps to shed light on the fracture criterion for brittle cylindrical components under transient thermal and dynamic loadings.

Original language	English (US)
Pages (from-to)	1437-1444
Number of pages	8
Journal	Nuclear Engineering and Design
Volume	237
Issue number	12-13
DOIs	https://doi.org/10.1016/j.nucengdes.2006.09.041
State	Published - Jul 2007

Bibliographical note

Funding Information:
The financial support of the UK Health and Safety Executive for this work is gratefully acknowledged. The views expressed in this paper are those of the authors and do not necessarily represent the views of the Health and Safety Commission/Executive.

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10.1016/j.nucengdes.2006.09.041

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title = "Double cracking in brittle cylindrical specimens subjected to quenching",

abstract = "A series of quench tests on hollow cylindrical specimens made of the machinable ceramic, Pyrophyllite, has been performed. The specimens consistently fractured with two diametrically opposite longitudinal cracks. Finite element analysis indicates that the primary crack occurred at the stage when the strain energy of the cylinder reached its maximum during the thermal transient process, while the secondary crack was caused by stress waves generated following the primary crack. This is supported by experimental observation of the time of fracture and the crack morphology. The work reported here helps to shed light on the fracture criterion for brittle cylindrical components under transient thermal and dynamic loadings.",

author = "Weijing He and Haiyan Li and Fok, {Siu Lun} and Jackson, {J. Derek} and Wright, {Jan R.}",

note = "Funding Information: The financial support of the UK Health and Safety Executive for this work is gratefully acknowledged. The views expressed in this paper are those of the authors and do not necessarily represent the views of the Health and Safety Commission/Executive. ",

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AU - He, Weijing

AU - Li, Haiyan

AU - Fok, Siu Lun

AU - Jackson, J. Derek

AU - Wright, Jan R.

N1 - Funding Information: The financial support of the UK Health and Safety Executive for this work is gratefully acknowledged. The views expressed in this paper are those of the authors and do not necessarily represent the views of the Health and Safety Commission/Executive.

PY - 2007/7

Y1 - 2007/7

N2 - A series of quench tests on hollow cylindrical specimens made of the machinable ceramic, Pyrophyllite, has been performed. The specimens consistently fractured with two diametrically opposite longitudinal cracks. Finite element analysis indicates that the primary crack occurred at the stage when the strain energy of the cylinder reached its maximum during the thermal transient process, while the secondary crack was caused by stress waves generated following the primary crack. This is supported by experimental observation of the time of fracture and the crack morphology. The work reported here helps to shed light on the fracture criterion for brittle cylindrical components under transient thermal and dynamic loadings.

AB - A series of quench tests on hollow cylindrical specimens made of the machinable ceramic, Pyrophyllite, has been performed. The specimens consistently fractured with two diametrically opposite longitudinal cracks. Finite element analysis indicates that the primary crack occurred at the stage when the strain energy of the cylinder reached its maximum during the thermal transient process, while the secondary crack was caused by stress waves generated following the primary crack. This is supported by experimental observation of the time of fracture and the crack morphology. The work reported here helps to shed light on the fracture criterion for brittle cylindrical components under transient thermal and dynamic loadings.

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JO - Nuclear Engineering and Design

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ER -

Double cracking in brittle cylindrical specimens subjected to quenching

Abstract

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