Deviations in yield and ultimate tensile strength estimation with the Small Punch Test: Numerical analysis of pre-straining and Bauschinger effect influence

2021 ◽  
Vol 153 ◽  
pp. 103696
Author(s):  
Jose Calaf-Chica ◽  
Mario Sánchez Palomar ◽  
Pedro Miguel Bravo Díez ◽  
Mónica Preciado Calzada
Keyword(s):  
Tensile Strength ◽  
Numerical Analysis ◽  
Ultimate Tensile Strength ◽  
Bauschinger Effect ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

scholarly journals A New Prediction Method for the Ultimate Tensile Strength of Steel Alloys with Small Punch Test

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1491 ◽  
Author(s):  
Jose Calaf Chica ◽  
Pedro Bravo Díez ◽  
Mónica Preciado Calzada
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Yield Strength ◽  
Correlation Method ◽  
Small Punch Test ◽  
Steel Alloys ◽  
Small Punch ◽  
Punch Test ◽  
Hardening Coefficient

The load–deflection curve acquired from the Small Punch Test (SPT) is used to obtain the mechanical properties of materials using different correlation methods. The scattering level of these regressions tends to be high when a wide set of materials is analyzed. In this study, a correlation method based on a specific slope of the SPT curve was proposed to reduce scattering. Assuming the Ramberg–Osgood hardening law, the dependence of the SPT curve slope on the yield strength and the hardening coefficient is demonstrated by numerical simulations (FEM). Considering that the ultimate tensile strength could be obtained from the hardening coefficient, a response surface of the ultimate tensile strength with the yield strength and SPT curve slope, along with its equation, is presented for steel alloys. A summary of steel mechanical properties, based on the Boiler and Pressure Vessel Code (BPVC) and limited to yield strengths lower than 1300 MPa, is shown to select a set of experimental tests (tensile tests and SPTs) for which the range is completely covered. This experimental analysis validates the previous FEM analyses and the validity of the proposed correlation method, which shows more accurate correlations compared to the current methods.

Effect of test velocity on the tensile strength of high strength steels using the small punch test in a hydrogen environment

2021 ◽  
pp. 104552
Author(s):  
Luiz Fernando Maia de Almeida ◽  
Sonia Aparecida Goulart Oliveira ◽  
Marcelo Torres Piza Paes ◽  
Francisco Francelino Ramos Neto ◽  
Sinésio Domingues Franco ◽  
...  
Keyword(s):  
Tensile Strength ◽  
High Strength Steels ◽  
High Strength ◽  
Small Punch Test ◽  
Small Punch ◽  
Hydrogen Environment ◽  
Punch Test ◽  
Test Velocity

Prüfung duktiler Werkstoffe mit dem Small-Punch-Test

2005 ◽  
Vol 47 (1-2) ◽  
pp. 45-54 ◽  
Author(s):  
Meinhard Kuna ◽  
Martin Abendroth
Keyword(s):  
Small Punch Test ◽  
Small Punch ◽  
Punch Test
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