Modified weibull failure theory for size effect prediction of brittle thin film

M. Khandaker; M. Dhorje; S. Ekwaro-Osire

doi:10.1115/IMECE2006-14926

Modified weibull failure theory for size effect prediction of brittle thin film

M. Khandaker, M. Dhorje, S. Ekwaro-Osire

Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

A brittle thin film bonded to a substrate is common in MEMS components. At the edge of the interface, high stress gradients exist. It has been observed that mechanical strengthening of the thin film with decreasing film size occurs due to two constraints, namely, the microstructural constraint and the geometrical constraint. Consideration of both these constraints is required to properly predict the size effect impact on the strength of a brittle thin film. In this paper, a statistical approach is developed to predict the size effect of a brittle thin film on a substrate.

Original language	English
Title of host publication	Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006
Pages	557-564
Number of pages	8
DOIs	https://doi.org/10.1115/IMECE2006-14926
State	Published - 2007
Event	2006 ASME International Mechanical Engineering Congress and Exposition - Chicago, IL, United States Duration: Oct 5 2007 → Oct 10 2007

Publication series

Name	Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006

Conference

Conference	2006 ASME International Mechanical Engineering Congress and Exposition
Country/Territory	United States
City	Chicago, IL
Period	10/5/07 → 10/10/07

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10.1115/IMECE2006-14926

Cite this

Khandaker, M., Dhorje, M., & Ekwaro-Osire, S. (2007). Modified weibull failure theory for size effect prediction of brittle thin film. In Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006 (pp. 557-564). (Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006). https://doi.org/10.1115/IMECE2006-14926

Khandaker, M. ; Dhorje, M. ; Ekwaro-Osire, S. / Modified weibull failure theory for size effect prediction of brittle thin film. Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006. 2007. pp. 557-564 (Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006).

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abstract = "A brittle thin film bonded to a substrate is common in MEMS components. At the edge of the interface, high stress gradients exist. It has been observed that mechanical strengthening of the thin film with decreasing film size occurs due to two constraints, namely, the microstructural constraint and the geometrical constraint. Consideration of both these constraints is required to properly predict the size effect impact on the strength of a brittle thin film. In this paper, a statistical approach is developed to predict the size effect of a brittle thin film on a substrate.",

author = "M. Khandaker and M. Dhorje and S. Ekwaro-Osire",

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doi = "10.1115/IMECE2006-14926",

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series = "Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006",

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booktitle = "Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006",

note = "2006 ASME International Mechanical Engineering Congress and Exposition ; Conference date: 05-10-2007 Through 10-10-2007",

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Khandaker, M, Dhorje, M & Ekwaro-Osire, S 2007, Modified weibull failure theory for size effect prediction of brittle thin film. in Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006. Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006, pp. 557-564, 2006 ASME International Mechanical Engineering Congress and Exposition, Chicago, IL, United States, 10/5/07. https://doi.org/10.1115/IMECE2006-14926

Modified weibull failure theory for size effect prediction of brittle thin film. / Khandaker, M.; Dhorje, M.; Ekwaro-Osire, S.
Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006. 2007. p. 557-564 (Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - A brittle thin film bonded to a substrate is common in MEMS components. At the edge of the interface, high stress gradients exist. It has been observed that mechanical strengthening of the thin film with decreasing film size occurs due to two constraints, namely, the microstructural constraint and the geometrical constraint. Consideration of both these constraints is required to properly predict the size effect impact on the strength of a brittle thin film. In this paper, a statistical approach is developed to predict the size effect of a brittle thin film on a substrate.

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Khandaker M, Dhorje M, Ekwaro-Osire S. Modified weibull failure theory for size effect prediction of brittle thin film. In Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006. 2007. p. 557-564. (Proceedings of the Materials Division, The ASME Non-Destructive Evaluation Division and The ASME Pressure Vessels and Piping Division, 2006). doi: 10.1115/IMECE2006-14926

Modified weibull failure theory for size effect prediction of brittle thin film

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