Prediction of the growth rate for fatigue cracks emanating from cold expanded holes

V. D. Lacarac; A. A. Garcia-Granada; D. J. Smith; M. J. Pavier

doi:10.1016/j.ijfatigue.2003.10.015

Prediction of the growth rate for fatigue cracks emanating from cold expanded holes

V. D. Lacarac, A. A. Garcia-Granada, D. J. Smith, M. J. Pavier^*

^*Corresponding author for this work

Research output: Indexed journal article › Article › peer-review

39 Citations (Scopus)

Abstract

Fastener holes in aircraft components are routinely cold expanded to improve fatigue life, although the precise level of improvement is difficult to quantify. This paper describes an attempt to predict the growth rate of a fatigue corner crack emanating from the bore of a cold expanded hole. The prediction is made using a three-dimensional finite element model of a cold expanded hole combined with a Paris law fit to fatigue data derived from tests for corner cracks emanating from a plain hole. Residual stresses in the finite element model are calculated from a simulation of the cold expansion process. Finite element predictions of fatigue crack growth rate are compared with experimental measurements giving adequate agreement.

Original language	English
Pages (from-to)	585-595
Number of pages	11
Journal	International Journal of Fatigue
Volume	26
Issue number	6
DOIs	https://doi.org/10.1016/j.ijfatigue.2003.10.015
Publication status	Published - Jun 2004
Externally published	Yes

Keywords

Cold expansion
Fatigue crack growth
Finite element analysis
Residual stress

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10.1016/j.ijfatigue.2003.10.015

Cite this

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title = "Prediction of the growth rate for fatigue cracks emanating from cold expanded holes",

abstract = "Fastener holes in aircraft components are routinely cold expanded to improve fatigue life, although the precise level of improvement is difficult to quantify. This paper describes an attempt to predict the growth rate of a fatigue corner crack emanating from the bore of a cold expanded hole. The prediction is made using a three-dimensional finite element model of a cold expanded hole combined with a Paris law fit to fatigue data derived from tests for corner cracks emanating from a plain hole. Residual stresses in the finite element model are calculated from a simulation of the cold expansion process. Finite element predictions of fatigue crack growth rate are compared with experimental measurements giving adequate agreement.",

keywords = "Cold expansion, Fatigue crack growth, Finite element analysis, Residual stress",

author = "Lacarac, {V. D.} and Garcia-Granada, {A. A.} and Smith, {D. J.} and Pavier, {M. J.}",

note = "Funding Information: The work described here formed part of a CARAD project sponsored by DTi and managed by DERA. Their financial support and assistance is gratefully acknowledged. ",

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AU - Lacarac, V. D.

AU - Garcia-Granada, A. A.

AU - Smith, D. J.

AU - Pavier, M. J.

N1 - Funding Information: The work described here formed part of a CARAD project sponsored by DTi and managed by DERA. Their financial support and assistance is gratefully acknowledged.

PY - 2004/6

Y1 - 2004/6

N2 - Fastener holes in aircraft components are routinely cold expanded to improve fatigue life, although the precise level of improvement is difficult to quantify. This paper describes an attempt to predict the growth rate of a fatigue corner crack emanating from the bore of a cold expanded hole. The prediction is made using a three-dimensional finite element model of a cold expanded hole combined with a Paris law fit to fatigue data derived from tests for corner cracks emanating from a plain hole. Residual stresses in the finite element model are calculated from a simulation of the cold expansion process. Finite element predictions of fatigue crack growth rate are compared with experimental measurements giving adequate agreement.

AB - Fastener holes in aircraft components are routinely cold expanded to improve fatigue life, although the precise level of improvement is difficult to quantify. This paper describes an attempt to predict the growth rate of a fatigue corner crack emanating from the bore of a cold expanded hole. The prediction is made using a three-dimensional finite element model of a cold expanded hole combined with a Paris law fit to fatigue data derived from tests for corner cracks emanating from a plain hole. Residual stresses in the finite element model are calculated from a simulation of the cold expansion process. Finite element predictions of fatigue crack growth rate are compared with experimental measurements giving adequate agreement.

KW - Cold expansion

KW - Fatigue crack growth

KW - Finite element analysis

KW - Residual stress

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DO - 10.1016/j.ijfatigue.2003.10.015

M3 - Article

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SP - 585

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JO - International Journal of Fatigue

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IS - 6

ER -

Prediction of the growth rate for fatigue cracks emanating from cold expanded holes

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Keywords

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