Assessment of the Fatigue Parameters from Random Vibration Testing: Application to a Rivet Joint

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ČESNIK, Martin ;SLAVIČ, Janko ;BOLTEŽAR, Miha .
Assessment of the Fatigue Parameters from Random Vibration Testing: Application to a Rivet Joint. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 62, n.7-8, p. 471-482, june 2018. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/assessment-of-the-fatigue-parameters-from-random-vibration-testing-application-to-a-rivet-joint/>. Date accessed: 16 nov. 2018. 
doi:http://dx.doi.org/10.5545/sv-jme.2016.3774.
Česnik, M., Slavič, J., & Boltežar, M.
(2016).
Assessment of the Fatigue Parameters from Random Vibration Testing: Application to a Rivet Joint.
Strojniški vestnik - Journal of Mechanical Engineering, 62(7-8), 471-482.
doi:http://dx.doi.org/10.5545/sv-jme.2016.3774
@article{sv-jmesv-jme.2016.3774,
	author = {Martin  Česnik and Janko  Slavič and Miha  Boltežar},
	title = {Assessment of the Fatigue Parameters from Random Vibration Testing: Application to a Rivet Joint},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {62},
	number = {7-8},
	year = {2016},
	keywords = {vibration fatigue testing; fatigue parameters; random base-excitation; frequency-domain counting method},
	abstract = {In order to estimate a structure's fatigue life when excited with an acceleration profile the fatigue parameters must be known. However, material's fatigue exponent and fatigue strength are not always readily available, especially for complex structures that include riveted or welded joints for which additional fatigue tests are needed. This study introduces a new fatigue-parameter assessment method based on random vibration loading and its application to a blind-hole rivet joint that diminishes the need for additional fatigue tests. The presented procedure requires a simple experimental setup; however, a more extensive analysis of the experimental results is necessary. The method of fatigue parameter assessment is presented and applied on real, experimentally obtained data from vibration tests of rivet-joint specimens, excited with a random base-vibration load in the frequency range of a single natural frequency. Special attention was given to the modelling of the rivet joint and the uncertainties arising from the riveting process were considered. With the presented procedure it is possible to obtain the fatigue parameters solely from the results of random-vibration testing with different acceleration profiles and therefore diminishing the need for additional classic fatigue tests. The obtained fatigue parameters indirectly include the stress concentration factor and the damping-loss-factor increase during the damage accumulation. Additionally, by applying the random-vibration load the influences of the natural-frequency shift and the small nonlinearities of the structure are reduced, which can present a major issue in classic harmonic-vibration fatigue testing.},
	issn = {0039-2480},	pages = {471-482},	doi = {10.5545/sv-jme.2016.3774},
	url = {https://www.sv-jme.eu/article/assessment-of-the-fatigue-parameters-from-random-vibration-testing-application-to-a-rivet-joint/}
}
Česnik, M.,Slavič, J.,Boltežar, M.
2016 June 62. Assessment of the Fatigue Parameters from Random Vibration Testing: Application to a Rivet Joint. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 62:7-8
%A Česnik, Martin 
%A Slavič, Janko 
%A Boltežar, Miha 
%D 2016
%T Assessment of the Fatigue Parameters from Random Vibration Testing: Application to a Rivet Joint
%B 2016
%9 vibration fatigue testing; fatigue parameters; random base-excitation; frequency-domain counting method
%! Assessment of the Fatigue Parameters from Random Vibration Testing: Application to a Rivet Joint
%K vibration fatigue testing; fatigue parameters; random base-excitation; frequency-domain counting method
%X In order to estimate a structure's fatigue life when excited with an acceleration profile the fatigue parameters must be known. However, material's fatigue exponent and fatigue strength are not always readily available, especially for complex structures that include riveted or welded joints for which additional fatigue tests are needed. This study introduces a new fatigue-parameter assessment method based on random vibration loading and its application to a blind-hole rivet joint that diminishes the need for additional fatigue tests. The presented procedure requires a simple experimental setup; however, a more extensive analysis of the experimental results is necessary. The method of fatigue parameter assessment is presented and applied on real, experimentally obtained data from vibration tests of rivet-joint specimens, excited with a random base-vibration load in the frequency range of a single natural frequency. Special attention was given to the modelling of the rivet joint and the uncertainties arising from the riveting process were considered. With the presented procedure it is possible to obtain the fatigue parameters solely from the results of random-vibration testing with different acceleration profiles and therefore diminishing the need for additional classic fatigue tests. The obtained fatigue parameters indirectly include the stress concentration factor and the damping-loss-factor increase during the damage accumulation. Additionally, by applying the random-vibration load the influences of the natural-frequency shift and the small nonlinearities of the structure are reduced, which can present a major issue in classic harmonic-vibration fatigue testing.
%U https://www.sv-jme.eu/article/assessment-of-the-fatigue-parameters-from-random-vibration-testing-application-to-a-rivet-joint/
%0 Journal Article
%R 10.5545/sv-jme.2016.3774
%& 471
%P 12
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 62
%N 7-8
%@ 0039-2480
%8 2018-06-27
%7 2018-06-27
Česnik, Martin, Janko  Slavič, & Miha  Boltežar.
"Assessment of the Fatigue Parameters from Random Vibration Testing: Application to a Rivet Joint." Strojniški vestnik - Journal of Mechanical Engineering [Online], 62.7-8 (2016): 471-482. Web.  16 Nov. 2018
TY  - JOUR
AU  - Česnik, Martin 
AU  - Slavič, Janko 
AU  - Boltežar, Miha 
PY  - 2016
TI  - Assessment of the Fatigue Parameters from Random Vibration Testing: Application to a Rivet Joint
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2016.3774
KW  - vibration fatigue testing; fatigue parameters; random base-excitation; frequency-domain counting method
N2  - In order to estimate a structure's fatigue life when excited with an acceleration profile the fatigue parameters must be known. However, material's fatigue exponent and fatigue strength are not always readily available, especially for complex structures that include riveted or welded joints for which additional fatigue tests are needed. This study introduces a new fatigue-parameter assessment method based on random vibration loading and its application to a blind-hole rivet joint that diminishes the need for additional fatigue tests. The presented procedure requires a simple experimental setup; however, a more extensive analysis of the experimental results is necessary. The method of fatigue parameter assessment is presented and applied on real, experimentally obtained data from vibration tests of rivet-joint specimens, excited with a random base-vibration load in the frequency range of a single natural frequency. Special attention was given to the modelling of the rivet joint and the uncertainties arising from the riveting process were considered. With the presented procedure it is possible to obtain the fatigue parameters solely from the results of random-vibration testing with different acceleration profiles and therefore diminishing the need for additional classic fatigue tests. The obtained fatigue parameters indirectly include the stress concentration factor and the damping-loss-factor increase during the damage accumulation. Additionally, by applying the random-vibration load the influences of the natural-frequency shift and the small nonlinearities of the structure are reduced, which can present a major issue in classic harmonic-vibration fatigue testing.
UR  - https://www.sv-jme.eu/article/assessment-of-the-fatigue-parameters-from-random-vibration-testing-application-to-a-rivet-joint/
@article{{sv-jme}{sv-jme.2016.3774},
	author = {Česnik, M., Slavič, J., Boltežar, M.},
	title = {Assessment of the Fatigue Parameters from Random Vibration Testing: Application to a Rivet Joint},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {62},
	number = {7-8},
	year = {2016},
	doi = {10.5545/sv-jme.2016.3774},
	url = {https://www.sv-jme.eu/article/assessment-of-the-fatigue-parameters-from-random-vibration-testing-application-to-a-rivet-joint/}
}
TY  - JOUR
AU  - Česnik, Martin 
AU  - Slavič, Janko 
AU  - Boltežar, Miha 
PY  - 2018/06/27
TI  - Assessment of the Fatigue Parameters from Random Vibration Testing: Application to a Rivet Joint
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 62, No 7-8 (2016): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2016.3774
KW  - vibration fatigue testing, fatigue parameters, random base-excitation, frequency-domain counting method
N2  - In order to estimate a structure's fatigue life when excited with an acceleration profile the fatigue parameters must be known. However, material's fatigue exponent and fatigue strength are not always readily available, especially for complex structures that include riveted or welded joints for which additional fatigue tests are needed. This study introduces a new fatigue-parameter assessment method based on random vibration loading and its application to a blind-hole rivet joint that diminishes the need for additional fatigue tests. The presented procedure requires a simple experimental setup; however, a more extensive analysis of the experimental results is necessary. The method of fatigue parameter assessment is presented and applied on real, experimentally obtained data from vibration tests of rivet-joint specimens, excited with a random base-vibration load in the frequency range of a single natural frequency. Special attention was given to the modelling of the rivet joint and the uncertainties arising from the riveting process were considered. With the presented procedure it is possible to obtain the fatigue parameters solely from the results of random-vibration testing with different acceleration profiles and therefore diminishing the need for additional classic fatigue tests. The obtained fatigue parameters indirectly include the stress concentration factor and the damping-loss-factor increase during the damage accumulation. Additionally, by applying the random-vibration load the influences of the natural-frequency shift and the small nonlinearities of the structure are reduced, which can present a major issue in classic harmonic-vibration fatigue testing.
UR  - https://www.sv-jme.eu/article/assessment-of-the-fatigue-parameters-from-random-vibration-testing-application-to-a-rivet-joint/
Česnik, Martin, Slavič, Janko, AND Boltežar, Miha.
"Assessment of the Fatigue Parameters from Random Vibration Testing: Application to a Rivet Joint" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 62 Number 7-8 (27 June 2018)

Authors

Affiliations

  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia
  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia
  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 62(2016)7-8, 471-482

10.5545/sv-jme.2016.3774

In order to estimate a structure's fatigue life when excited with an acceleration profile the fatigue parameters must be known. However, material's fatigue exponent and fatigue strength are not always readily available, especially for complex structures that include riveted or welded joints for which additional fatigue tests are needed. This study introduces a new fatigue-parameter assessment method based on random vibration loading and its application to a blind-hole rivet joint that diminishes the need for additional fatigue tests. The presented procedure requires a simple experimental setup; however, a more extensive analysis of the experimental results is necessary. The method of fatigue parameter assessment is presented and applied on real, experimentally obtained data from vibration tests of rivet-joint specimens, excited with a random base-vibration load in the frequency range of a single natural frequency. Special attention was given to the modelling of the rivet joint and the uncertainties arising from the riveting process were considered. With the presented procedure it is possible to obtain the fatigue parameters solely from the results of random-vibration testing with different acceleration profiles and therefore diminishing the need for additional classic fatigue tests. The obtained fatigue parameters indirectly include the stress concentration factor and the damping-loss-factor increase during the damage accumulation. Additionally, by applying the random-vibration load the influences of the natural-frequency shift and the small nonlinearities of the structure are reduced, which can present a major issue in classic harmonic-vibration fatigue testing.

vibration fatigue testing; fatigue parameters; random base-excitation; frequency-domain counting method