Numerical study on the surface morphology evolution and hardness during the spherical indentation of copper with plastic behavior described by different stress-strain relationships

Santana, Ézio Carvalho de; Misiolek, Wojcieck Z.; Costa, André L. M.

doi:10.1016/j.ijsolstr.2022.111817

Cited by 2 publications

(2 citation statements)

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“…With the improvements of calculation accuracy and the reduction of calculation time, finite element (FE) calculations have been extensively used in investigating the indentation response. [35][36][37] The study 38 that proved the indentation governing factor ψ shown in Equation ( 2) is well-correlated with the indentation depth and flow characteristics of sample materials. Consequently, a series of regression functions [39][40][41][42] for modifying the stress-strain calculation were proposed, and some efforts 17,[43][44][45][46] were also made to find a direct correlation between the material parameters and the load-depth curve of SIT.…”

Section: Numerical Model (Database Model)mentioning

confidence: 89%

Section: Uniaxial Tensile Property Calculation Modelsmentioning

confidence: 99%

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On the evaluation of uniaxial tensile and fracture properties of Ti‐6Al‐4V by spherical indentation tests with different calculation models

Wang

Liu²,

Zheng

et al. 2023

Fatigue Fract Eng Mat Struct

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This study assessed the efficacy of models in predicting uniaxial tensile and fracture properties of Ti‐6Al‐4V (TC4) alloys via spherical indentation tests (SITs). Four models, including one empirical, one numerical, and two analytical, were selected as representatives to evaluate uniaxial tensile properties. A series of experiments were conducted on TC4 alloys obtained from three manufacturing processes: selective laser melting (SLM), forging, and welding. The empirical model underestimated the material's strength, while the other models were mostly conservative, with errors within 10%, acceptable for engineering applications. However, although the incremental model is able to provide a desirable result, it may be inaccurate for calculating the yield strength. Thus, the source of errors in each model was thoroughly investigated through theoretical analysis and finite element calculations. Additionally, based on the results of optimal strength assessment, this study validated the effectiveness of the critical stress model to evaluate the fracture toughness of TC4 alloys.

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Section: Numerical Model (Database Model)mentioning

confidence: 89%

Section: Uniaxial Tensile Property Calculation Modelsmentioning

confidence: 99%

On the evaluation of uniaxial tensile and fracture properties of Ti‐6Al‐4V by spherical indentation tests with different calculation models

Wang

Liu²,

Zheng

et al. 2023

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

Indentation parameters for Brinell hardness measurement of low carbon steels

Udalov,

Norin

2024

E3S Web of Conf.

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Brinell hardness of steel 20 was measured with a ball of constant diameter according to the standard technique D=10 mm at different test load values from the range F=62.5…3000 kgf. The diameter d of the reconstructed indentation was measured. According to the developed method the deformation resistance of the sample material in the plastic zone bounded by a hemisphere was determined. The highest values of deformation resistance were recorded at indentation up to the ratio of d/D=0.245. Based on the results obtained, it is recommended to measure the Brinell hardness of steel 20 at the degree of loading F/D2=5. During the ball indentation process, the sample material undergoes significant deformation, which must be taken into account when measuring hardness.

show abstract

Numerical study on the surface morphology evolution and hardness during the spherical indentation of copper with plastic behavior described by different stress-strain relationships

Cited by 2 publications

References 24 publications

On the evaluation of uniaxial tensile and fracture properties of Ti‐6Al‐4V by spherical indentation tests with different calculation models

On the evaluation of uniaxial tensile and fracture properties of Ti‐6Al‐4V by spherical indentation tests with different calculation models

Indentation parameters for Brinell hardness measurement of low carbon steels

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