Tensile and Fracture Behaviour of Very Thin 304 Stainless Steel Sheet

Al-Bakri, Ammar Adil; Sajuri, Zainuddin; Ariffin, Ahmad Kamal; Razzaq, Mohammed Abdul; Fafmin, Mohd Salehudin

doi:10.11113/jt.v78.9146

Cited by 7 publications

(5 citation statements)

References 10 publications

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“…These samples were labelled 1, 2 and 3 for each condition. The physical behaviour of the specimens was observed from its initial loading until specimen failure same as reported by Al-Bakri et al [54]. Initially, both samples under the different conditions were loaded in the elastic range until they reached their respective elastic limits.…”

Section: Tensile Propertiesmentioning

confidence: 76%

Fatigue properties of strained very thin 304 stainless steel sheets

Al-Bakri

Sajuri²,

Abdulrazzaq

et al. 2017

Int. J. Automot. Mech. Eng.

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This paper aims to study the properties of 300µm thickness 304 stainless steel. This research topic was selected considering the high demand for the production of small products such as smart phones, solar systems, hard drives, etc. Stainless steel was chosen for its low cost, suitable weight, and good mechanical properties in terms of strength and deformation compared to other materials. However, specimen size and strain may affect the results achieved. In this study, the effects of 2% and 5% strains on the fatigue strength of very thin 304 stainless steel sheets were investigated. Fatigue samples were cut into dumbbell-shapes with a rectangular cross-section as per ASTM E8. The tensile testing results showed that 300µm thickness heat-treated specimen sheets had less strain hardening with clear evidence of yielding. The fatigue test showed that higher strain values lengthened the fatigue life cycles of the stainless steel specimens. From this study, it can be concluded that tensile strain can improve the fatigue strength of very thin 304 stainless steel sheets.

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Section: Tensile Propertiesmentioning

confidence: 76%

Fatigue properties of strained very thin 304 stainless steel sheets

Al-Bakri

Sajuri²,

Abdulrazzaq

et al. 2017

Int. J. Automot. Mech. Eng.

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“…The dog bone specimen FEA model was developed based on ASTM ISO 204 & ISO R/206 E-139 standards for tensile creep testing in Abaqus [ 51 ]. The FEA model geometry was developed with the help of the sketcher toolbox in the Abaqus solver.…”

Section: Methodsmentioning

confidence: 99%

“…The load was maintained for the period of the test or until the specimen ruptured with a pre-stress of 35% UTS [ 53 ]. During the test, the data were continuously monitored and recorded to qualify for the stability of the temperatures, the load, and the specimen’s elongation [ 51 ]. The model was developed based on ASTM standards and as per the dimensions mentioned in Figure 4 a.…”

Section: Methodsmentioning

confidence: 99%

Curve Fitting for Damage Evolution through Regression Analysis for the Kachanov–Rabotnov Model to the Norton–Bailey Creep Law of SS-316 Material

et al. 2021

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In a number of circumstances, the Kachanov–Rabotnov isotropic creep damage constitutive model has been utilized to assess the creep deformation of high-temperature components. Secondary creep behavior is usually studied using analytical methods, whereas tertiary creep damage constants are determined by the combination of experiments and numerical optimization. To obtain the tertiary creep damage constants, these methods necessitate extensive computational effort and time to determine the tertiary creep damage constants. In this study, a curve-fitting technique was proposed for applying the Kachanov–Rabotnov model into the built-in Norton–Bailey model in Abaqus. It extrapolates the creep behaviour by fitting the Kachanov–Rabotnov model to the limited creep data obtained from the Omega-Norton–Bailey regression model and then simulates beyond the available data points. Through the Omega creep model, several creep strain rates for SS-316 were calculated using API-579/ASME FFS-1 standards. These are dependent on the type of the material, the flow stress, and the temperature. In the present work, FEA creep assessment was carried out on the SS-316 dog bone specimen, which was used as a material coupon to forecast time-dependent permanent plastic deformation as well as creep behavior at elevated temperatures and under uniform stress. The model was validated with the help of published experimental creep test data, and data optimization for sensitivity study was conducted by applying response surface methodology (RSM) and ANOVA techniques. The results showed that the specimen underwent secondary creep deformation for most of the analysis period. Hence, the method is useful in predicting the complete creep behavior of the material and in generating a creep curve.

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“…The FE model of a dog-bone geometry was developed as per the ASTM E-139 tensile creep testing standards [37], as shown in Figure 3a. The analyzed data had a maximum of 100 increments and an 18,000 h increment [36].…”

Section: Finite Element Geometry Modelling and Pre-processingmentioning

confidence: 99%

“…The creep deformation was modeled using the Omega-Norton-Bailey regression model. The FE dog-bone model results were first obtained for the Omega model, which was taken as the baseline model for model comparison in this research study [37]. The same FE model was then utilized for obtaining the creep damage data and to run the FE simulations while implementing other mathematical models.…”

Section: Finite Element Geometry Modelling and Pre-processingmentioning

confidence: 99%

Correlation Analysis of Established Creep Failure Models through Computational Modelling for SS-304 Material

Sattar

Othman

Muzamil

et al. 2023

Metals

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To maintain safety and reliability in power plants, creep-life prediction models have received much attention over the years. This article was designed to focus on the conditions when a material structure is exposed to extremely high temperatures and pressures with the help of finite element analysis. A direct comparison of the feasibility of different models’ fitness and suitability in predicting creep damage was presented in this article by simulating the damage evolution of a uniaxial SS-304 specimen under a pre-defined load, using established constitutive creep models. Comparative assessments of minimum creep strain rate, creep deformation, and stress rupture were demonstrated using the Norton–Bailey (NB), Kachanov–Rabotnov (KR), Theta projection (TP), and sine-hyperbolic (SH) models while standardizing them with the Omega model. The FE results of a dog-bone specimen, while implementing the models, were compared with the actual creep experiment results to check for the models’ reliability and validation. Subsequently, sensitivity studies of the established creep models were conducted using the statistical tools RSM and ANOVA, with an analysis of how the parameters for operation, design, and material dependency came into effect. Thus, quantitative and qualitative correlation analyses of the FE creep response for these five established models were conducted together, resulting in finalizing the selection of the most suitable model, the sine-hyperbolic model, for the SS-304 material under the defined boundary conditions. The 0.84 R2 value of the sine-hyperbolic model proved the model’s selection for predicting the creep response of stainless steel 304. The method can be applied to select a suitable creep damage model as per the feasibility of the operating conditions.

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Tensile and Fracture Behaviour of Very Thin 304 Stainless Steel Sheet

Cited by 7 publications

References 10 publications

Fatigue properties of strained very thin 304 stainless steel sheets

Fatigue properties of strained very thin 304 stainless steel sheets

Curve Fitting for Damage Evolution through Regression Analysis for the Kachanov–Rabotnov Model to the Norton–Bailey Creep Law of SS-316 Material

Correlation Analysis of Established Creep Failure Models through Computational Modelling for SS-304 Material

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