Abstract
In engineering applications, analysis of crack growth life is useful in situations where an unexpected crack has been found in a component of a machine, vehicle, or structure. The objective of this research is to investigate the correlation curve of magnetic flux leakage, Hp(y) signals by evaluating their critical value point with respect to step size. Moreover, the relation of fatigue crack growth rate, da/dN toward the stress intensity range, ΔK and Hp(y) in metal components is also discussed in this paper. The tension-tension fatigue test was conducted with the metal magnetic memory scanning device and crack opening displacement (COD) gauges in 10 Hz (testing frequency) by applying a load for 3.0-5.0 kN respectively. As a result, the correlation curve of Hp(y) was built with the R-Squared values in the range of 0.99 and one mathematical model has been developed for estimation analysis. The sigmoidal shape curve was plotted on the graph of da/dN versus ΔK and also with Hp(y). Thus, for validation, the linear relation is represented between ΔK and Hp(y) that present a good approach for magnetic parameter to be developed in the fatigue crack growth analysis. Therefore, the magnetic method has greater capability to analyze the fatigue crack propagation life in a real application.
| Original language | English |
|---|---|
| Pages (from-to) | 1727-1733 |
| Number of pages | 7 |
| Journal | Journal of Mechanical Engineering and Sciences |
| Volume | 9 |
| DOIs | |
| Publication status | Published - 1 Dec 2015 |
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Keywords
- Crack growth life
- Fatigue test
- Magnetic signals
- Stress intensity range
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Fuel Technology
- Computational Mechanics
- Industrial and Manufacturing Engineering
- Mechanical Engineering
- Mechanics of Materials
Cite this
Evaluation of magnetic flux leakage signals on fatigue crack growth of mild steel. / Ahmad, M. I M; Arifin, Azli; Abdullah, Shahrum.
In: Journal of Mechanical Engineering and Sciences, Vol. 9, 01.12.2015, p. 1727-1733.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Evaluation of magnetic flux leakage signals on fatigue crack growth of mild steel
AU - Ahmad, M. I M
AU - Arifin, Azli
AU - Abdullah, Shahrum
PY - 2015/12/1
Y1 - 2015/12/1
N2 - In engineering applications, analysis of crack growth life is useful in situations where an unexpected crack has been found in a component of a machine, vehicle, or structure. The objective of this research is to investigate the correlation curve of magnetic flux leakage, Hp(y) signals by evaluating their critical value point with respect to step size. Moreover, the relation of fatigue crack growth rate, da/dN toward the stress intensity range, ΔK and Hp(y) in metal components is also discussed in this paper. The tension-tension fatigue test was conducted with the metal magnetic memory scanning device and crack opening displacement (COD) gauges in 10 Hz (testing frequency) by applying a load for 3.0-5.0 kN respectively. As a result, the correlation curve of Hp(y) was built with the R-Squared values in the range of 0.99 and one mathematical model has been developed for estimation analysis. The sigmoidal shape curve was plotted on the graph of da/dN versus ΔK and also with Hp(y). Thus, for validation, the linear relation is represented between ΔK and Hp(y) that present a good approach for magnetic parameter to be developed in the fatigue crack growth analysis. Therefore, the magnetic method has greater capability to analyze the fatigue crack propagation life in a real application.
AB - In engineering applications, analysis of crack growth life is useful in situations where an unexpected crack has been found in a component of a machine, vehicle, or structure. The objective of this research is to investigate the correlation curve of magnetic flux leakage, Hp(y) signals by evaluating their critical value point with respect to step size. Moreover, the relation of fatigue crack growth rate, da/dN toward the stress intensity range, ΔK and Hp(y) in metal components is also discussed in this paper. The tension-tension fatigue test was conducted with the metal magnetic memory scanning device and crack opening displacement (COD) gauges in 10 Hz (testing frequency) by applying a load for 3.0-5.0 kN respectively. As a result, the correlation curve of Hp(y) was built with the R-Squared values in the range of 0.99 and one mathematical model has been developed for estimation analysis. The sigmoidal shape curve was plotted on the graph of da/dN versus ΔK and also with Hp(y). Thus, for validation, the linear relation is represented between ΔK and Hp(y) that present a good approach for magnetic parameter to be developed in the fatigue crack growth analysis. Therefore, the magnetic method has greater capability to analyze the fatigue crack propagation life in a real application.
KW - Crack growth life
KW - Fatigue test
KW - Magnetic signals
KW - Stress intensity range
UR - http://www.scopus.com/inward/record.url?scp=84962377332&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84962377332&partnerID=8YFLogxK
U2 - 10.15282/jmes.9.2015.18.0166
DO - 10.15282/jmes.9.2015.18.0166
M3 - Article
VL - 9
SP - 1727
EP - 1733
JO - Journal of Mechanical Engineering and Sciences
JF - Journal of Mechanical Engineering and Sciences
SN - 2289-4659
ER -