Entropy-Based Approach for Fatigue Crack Growth Rate of Dual-Phase Steel

Idris, Rubia; Abdullah, Shahrum; Thamburaja, T Prakash G.; Omar, Mohd Zaidi

doi:10.30880/ijie.2018.10.05.001

Cited by 5 publications

(4 citation statements)

References 17 publications

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“…The number of study related to crack initiation and crack growth resistance on the dual-phase steels is increasing, and different works discuss the influence of the microstructure over the fatigue crack propagation. Several authors [8][9][10][11] conclude that the increase of the ferrite phase increases the fatigue crack growth velocity; thus, a high martensite content is favourable for this type of steel under fatigue loads. While Idris et al [12] observed the opposite behaviour; increasing the martensite content rises the fatigue crack growth velocity.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Crack Growth and Fracture Toughness in a Dual Phase Steel: Effect of Increasing Martensite Volume Fraction

Velasquez¹,

Rodríguez²,

Tovar³

et al. 2020

IJAME

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Crack growth resistance in dual-phase steel was studied. The dual phase steel microstructure was modified through heat treatments to increase the martensite volume fraction from 10% to 40%. The as-received and heat-treated samples were evaluated using a uniaxial tensile test, fatigue crack growth test, and fracture toughness test. Extended Finite Element Method (XFEM) was used to simulate the crack growth in compact tension test specimens. The results showed that an increase in martensite volume fraction is an effective way to increase the fracture resistance under different load conditions, quasistatics and dynamic, increasing the fracture toughness, tensile strength and fatigue resistance of the heat-treated material. Presence of a highest content of martensite results in formation of an important number of secondary cracks during the fatigue crack growth, which slow down the crack propagation. Moreover, martensite generates a crack closure over the crack tip, making the propagation difficult due to the irregularities caused by the crack growth on the martensite. Finally, the computational load-displacement curves are in good agreement with the experimental data.

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Section: Introductionmentioning

confidence: 99%

Fatigue Crack Growth and Fracture Toughness in a Dual Phase Steel: Effect of Increasing Martensite Volume Fraction

Velasquez¹,

Rodríguez²,

Tovar³

et al. 2020

IJAME

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“…Its occurrence is associated with the propagation of fatigue cracks [3] and the process is very dangerous because it occurs without any initial indications. There are many factors influencing fatigue and this makes its prediction to be very difficult [4].…”

Section: Introductionmentioning

confidence: 99%

Development of a Noise Filtering Algorithm for Strain Signals Using the Fast Fourier Transform

Asrina¹,

Putra²,

Husaini³

2020

IJIE

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The purpose of this study is to filter the noise in strain signals based on the fast Fourier transform. The strain signals were measured at an automotive lower arm made from the SAE 1045 carbon steel driven on paving block and asphalt. This technique removed lower amplitude cycles as much as possible due to their contribution to the minimum fatigue damage and simultaneous maintenance of cumulative fatigue damage. The filtering algorithm was able to remove up to 36.2% of the lower amplitude cycles and maintain more than 90% of the fatigue damage. This proved that the algorithm developed was successfully identified and eliminated low amplitude cycles.

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“…Fatigue is a failure in progressive of a component under cyclic and repeated loading. Failure occurs even when the applied stress or strain is well below the value corresponding to failure under cyclic loading [1]. Many mechanisms have been studied to describe fatigue failure and crack initiation are reviewed in this research.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Crack Growth Behaviour of Sandwiched Metal Panel of Aluminium and Mild Steel under Constant Amplitude Loading

Isahak¹,

Abdullah²,

Faidzi³

et al. 2020

IJIE

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This study concerned about the sandwiched metal panel on the fatigue crack growth of mild steel and aluminium. The fatigue crack growth consists of 3 layer of metal sheet or panel that bonded together using adhesive of epoxy resin by hand lay-up technique. The 3 layers are consisting of 2 face metal sheets and 1 metal sheet as a core for the sandwiched; sandwiched of aluminium with mild steel panel (SAMSP) and sandwiched of mild steel panel (SMSP). The specimen was cut using Electrical Discharge Machine Wire Cut (EDM-wire cut) to get tensile test specimen based on American Standard Testing Method (ASTM) E8 before tested with speed rate of 3mm/min using Universal Testing Machine Instron 5569A (UTM). The stress strain curve was plotted in order to analyse the yield strength, Ultimate Tensile Strength (UTS) and the Young's Modulus of the sandwiched. UTS value is used for the fatigue test in the maximum stress applied between 0.50%, 0.60%, 0.70%, 0.80% and 0.90% of UTS. The fatigue test was conducted under ASTM E647 compact tension C(T) standard using Instron 8801 Fatigue Machine with constant frequency of 20Hz and subjected to 1 million cyclic loading to reach failure. The crack growth behaviour of the specimen were discover that indicate the fatigue life, (a-N), fatigue crack growth and failure of the structure by the initial notch. The sandwiched of mild steel panel (SMSP) is compared with the sandwiched of aluminium with mild steel panel (SAMSP) to observe the crack growth behaviour and mechanical properties of the specimen in this study. It can be determined that SAMSP has two times better crack growth behaviour that improve the structure properties compare to the SMSP.

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Entropy-Based Approach for Fatigue Crack Growth Rate of Dual-Phase Steel

Cited by 5 publications

References 17 publications

Fatigue Crack Growth and Fracture Toughness in a Dual Phase Steel: Effect of Increasing Martensite Volume Fraction

Fatigue Crack Growth and Fracture Toughness in a Dual Phase Steel: Effect of Increasing Martensite Volume Fraction

Development of a Noise Filtering Algorithm for Strain Signals Using the Fast Fourier Transform

Fatigue Crack Growth Behaviour of Sandwiched Metal Panel of Aluminium and Mild Steel under Constant Amplitude Loading

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