A Comparison of Simultaneous and Sequential Single-Axis Durability Testing

French, Richard H.; Handy, Richard L.; Cooper, H.L.

doi:10.1111/j.1747-1567.2006.00083.x

Cited by 32 publications

(16 citation statements)

References 11 publications

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“…It is widely known that when an item undergoes vibration, a fatigue crack may eventually develop and the natural frequency and mode shapes of the system will change, when the crack becomes appreciably large, compared to the size of the specimen. This change in natural frequency has been investigated by numerous authors 5–7 . In addition, extensive health assessment work has been done by using the change in natural frequency as an indicator for detecting developing cracks, prior to catastrophic failure 8–10 …”

Section: Introductionmentioning

confidence: 99%

“…This change in natural frequency has been investigated by numerous authors. [5][6][7] In addition, extensive health assessment work has been done by using the change in natural frequency as an indicator for detecting developing cracks, prior to catastrophic failure. [8][9][10] This paper focuses on systems where the dominant fatigue mechanism is crack growth.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Life estimation model of a cantilevered beam subjected to complex random vibration

Paulus¹,

Dasgupta²,

Habtour³

2012

Fatigue Fract Eng Mat Struct

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An analytic methodology was developed to predict the fatigue life of a structure experiencing stationary, Gaussian random vibration excitation. This method allows the estimation of fatigue life using a frequency domain method, where only the input power spectral density and damping factor are required. The methodology uses linear elastic fracture mechanics for fatigue crack propagation and accounts for the frequency shifting that occurs due to fatigue crack evolution. Good results have been obtained comparing the analytic model to both finite element analysis (FEA) and experimental results, for mild‐steel cantilever beams.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Life estimation model of a cantilevered beam subjected to complex random vibration

Paulus¹,

Dasgupta²,

Habtour³

2012

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…Although this is a good assumption for many CCAs, the presence of cracks in structural systems will decrease the stiffness leading to a decrease in natural frequency. The change in natural frequency is well documented in the health monitoring and prognostics as well as in multi-axial vibration testing communities [5][6][7][8]. Within these communities it has been demonstrated that many structures can withstand a large change in natural frequency before failure.…”

Section: Introductionmentioning

confidence: 97%

Semi-empirical life model of a cantilevered beam subject to random vibration

Paulus

Dasgupta

2012

International Journal of Fatigue

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“…French et al [21] performed durability testing of notched beams by exciting the specimens in three directions with sine sweeps in the area of the specimens' resonance. Furthermore, the excitation for a accelerated vibrational fatigue test can be performed by means of the electromagnetic forces in an alternating magnetic field, as demonstrated by Kheng [22] in a fatigue test of a cantilever spring mechanism.…”

Section: Introductionmentioning

confidence: 99%