Synergy effects in the fatigue crack growth of hole cold expanded specimens under variable cyclic loading

R. R. Ambriz; C. García; S. L. Rodríguez-Reyna; M. Ramos-Azpeitia; D. Jaramillo

doi:10.1016/j.ijfatigue.2020.105807

Synergy effects in the fatigue crack growth of hole cold expanded specimens under variable cyclic loading

R. R. Ambriz, C. García, S. L. Rodríguez-Reyna, M. Ramos-Azpeitia, D. Jaramillo

Centro de Investigación e Innovación Tecnológica (CIITEC)

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

4 Scopus citations

Abstract

The influence of variable load spectra in the fatigue crack growth (FCG) was analyzed. A 4.1% interference was pre-set to some specimens by an expansion operation. As-drilled hole and hole expanded specimens were subjected to FCG tests under a combination of baseline cyclic loading and periodic overloads or underloads applied. Fatigue life was of approximately 1 million of cycles for the as-drilled hole, and 3.5 million of cycles for the hole cold expanded. The pre-setting operation and variable load spectra interaction exhibited a synergy, which was associated with multiple periods of retardation and arresting observed in the crack growth rate.

Original language	English
Article number	105807
Journal	International Journal of Fatigue
Volume	140
DOIs	https://doi.org/10.1016/j.ijfatigue.2020.105807
State	Published - Nov 2020

Keywords

Crack growth rate
Hole cold expansion
Overloads
Residual stresses
Retardation

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10.1016/j.ijfatigue.2020.105807

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title = "Synergy effects in the fatigue crack growth of hole cold expanded specimens under variable cyclic loading",

abstract = "The influence of variable load spectra in the fatigue crack growth (FCG) was analyzed. A 4.1% interference was pre-set to some specimens by an expansion operation. As-drilled hole and hole expanded specimens were subjected to FCG tests under a combination of baseline cyclic loading and periodic overloads or underloads applied. Fatigue life was of approximately 1 million of cycles for the as-drilled hole, and 3.5 million of cycles for the hole cold expanded. The pre-setting operation and variable load spectra interaction exhibited a synergy, which was associated with multiple periods of retardation and arresting observed in the crack growth rate.",

keywords = "Crack growth rate, Hole cold expansion, Overloads, Residual stresses, Retardation",

author = "Ambriz, {R. R.} and C. Garc{\'i}a and Rodr{\'i}guez-Reyna, {S. L.} and M. Ramos-Azpeitia and D. Jaramillo",

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T1 - Synergy effects in the fatigue crack growth of hole cold expanded specimens under variable cyclic loading

AU - Ambriz, R. R.

AU - García, C.

AU - Rodríguez-Reyna, S. L.

AU - Ramos-Azpeitia, M.

AU - Jaramillo, D.

PY - 2020/11

Y1 - 2020/11

N2 - The influence of variable load spectra in the fatigue crack growth (FCG) was analyzed. A 4.1% interference was pre-set to some specimens by an expansion operation. As-drilled hole and hole expanded specimens were subjected to FCG tests under a combination of baseline cyclic loading and periodic overloads or underloads applied. Fatigue life was of approximately 1 million of cycles for the as-drilled hole, and 3.5 million of cycles for the hole cold expanded. The pre-setting operation and variable load spectra interaction exhibited a synergy, which was associated with multiple periods of retardation and arresting observed in the crack growth rate.

AB - The influence of variable load spectra in the fatigue crack growth (FCG) was analyzed. A 4.1% interference was pre-set to some specimens by an expansion operation. As-drilled hole and hole expanded specimens were subjected to FCG tests under a combination of baseline cyclic loading and periodic overloads or underloads applied. Fatigue life was of approximately 1 million of cycles for the as-drilled hole, and 3.5 million of cycles for the hole cold expanded. The pre-setting operation and variable load spectra interaction exhibited a synergy, which was associated with multiple periods of retardation and arresting observed in the crack growth rate.

KW - Crack growth rate

KW - Hole cold expansion

KW - Overloads

KW - Residual stresses

KW - Retardation

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DO - 10.1016/j.ijfatigue.2020.105807

M3 - Artículo

AN - SCOPUS:85087765867

SN - 0142-1123

VL - 140

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 105807

ER -

Synergy effects in the fatigue crack growth of hole cold expanded specimens under variable cyclic loading

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Keywords

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