Fracture toughness evaluation of interstitial free steel sheet using Essential Work of Fracture (EWF) method

Chandra, S.K.; Sarkar, Rajarshi; Bhowmick, Amit; De, Partha Sarathi; Chakraborti, P.C.; Ray, Sudhabindu

doi:10.1016/j.engfracmech.2018.09.026

Cited by 18 publications

(3 citation statements)

References 44 publications

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“…S.K. Chandra et al 34 used the same empirical criteria to validate the stress state in the EWF test. However, the authors replaced the yield strength with ultimate strength and expressed their interest in verifying a wide range of materials.…”

Section: Essential Work Of Fracture Test Validitymentioning

confidence: 99%

Fracture toughness examination of dual‐phase and interstitial free steel using essential work of fracture method

Kumar

Schmidová

Konopík

et al. 2021

Fatigue Fract Eng Mat Struct

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Fracture toughness of automotive-grade dual-phase steel (DP450) and interstitial free (IF) steel is determined using essential work of fracture (EWF) methodology. Geometrical constraints of standard fracture toughness tests made the EWF method an alternative for thin sheets. Double edge notched tension (DENT) specimens are used for the EWF tests. The two steels have different mechanical and microstructural properties, which helps test the applicability of the EWF methodology to different materials. The effect of notch-tip radius on the EWF test results is analyzed for both the steels. The sensitivity of fracture toughness to notch-tip radius is not the same for both steels. During the EWF test, the digital image correlation (DIC) technique is used to determine the local strain variation of DENT specimens. The hole expansion ratio is determined for the two steels to compare against the EWF test results. The IF steel, despite lower strength, has better fracture toughness and hole expansion capability against the DP450 steel.

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Section: Essential Work Of Fracture Test Validitymentioning

confidence: 99%

Fracture toughness examination of dual‐phase and interstitial free steel using essential work of fracture method

Kumar

Schmidová

Konopík

et al. 2021

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…Marchal and Delannay observed better linearity in specific essential work of fracture for different ligament lengths but expressed their concern on the hypothesis of EWF about zone separation (FPZ and outer plastic zone). Chandra et al [14] have worked on the essential work of fracture method for interstitial free steel and determined specific essential work of fracture, crack tip opening displacement (CTOD) and crack tip opening angle (CTOA). The ESIS protocols [15,16] conducted in round-robin experiments on polymers give enhancing knowledge about dimensions and parameters affecting the EWF results.…”

Section: Introductionmentioning

confidence: 99%

“…The yield Metals 2020, 10, 1019 4 of 12 strength cannot be used as a limiting criterion here. The yield strength is replaced by the ultimate strength to verify the plane stress state in the ligament length [14].…”

Section: Introductionmentioning

confidence: 99%

Fracture Toughness Analysis of Automotive-Grade Dual-Phase Steel Using Essential Work of Fracture (EWF) Method

Kumar

Schmidová

Konopík

et al. 2020

Metals

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Fracture toughness determination of dual-phase DP450 steel using the essential work of fracture (EWF) methodology is the major focus of this research work. The EWF method is used for the determination of fracture toughness of thin sheets in a plane stress dominant condition. The EWF method is discussed in detail with the help of DP450 steel experimental results. Double edge notched tension (DENT) specimens with fatigue pre-crack and without fatigue crack (notched) have been used for testing. Specific essential work of fracture (we), crack tip opening displacement (δce) and crack tip opening angle (ψe) parameters were used for the comparative analysis. High-intensity laser beam cutting technology was used for the preparation of notches. Fracture toughness values of fatigue pre-cracked and notched samples were compared. The effect of notch tip radius and fatigue crack on the fracture toughness values were analysed. Digital image correlation (DIC) technology was used for the identification of local strain distribution and validation of the methodology. Fractured surfaces were examined by a scanning electron microscope (SEM) to analyse the fracture morphology and stress state.

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Determination of $$\varvec{\eta }_{{\varvec{p}}}$$ factor for clamped SENT thin sheet specimens of an Interstitial Free steel

et al. 2021

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Fracture toughness evaluation of interstitial free steel sheet using Essential Work of Fracture (EWF) method

Cited by 18 publications

References 44 publications

Fracture toughness examination of dual‐phase and interstitial free steel using essential work of fracture method

Fracture toughness examination of dual‐phase and interstitial free steel using essential work of fracture method

Fracture Toughness Analysis of Automotive-Grade Dual-Phase Steel Using Essential Work of Fracture (EWF) Method

Determination of $$\varvec{\eta }_{{\varvec{p}}}$$ factor for clamped SENT thin sheet specimens of an Interstitial Free steel

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