A new correlation method to obtain the ultimate tensile strength with small punch test and its application to hot-stamping processes

2019 ◽  
Author(s):  
Jose Calaf-Chica ◽  
Pedro Miguel Bravo Díez ◽  
Mónica Preciado Calzada ◽  
Daniel Ballorca-Juez
Keyword(s):  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Hot Stamping ◽  
Correlation Method ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
New Correlation

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.

scholarly journals Development of an improved correlation method for the yield strength of steel alloys in the small punch test

2018 ◽  
Vol 1 (S1) ◽  
pp. 12
Author(s):  
J. Calaf Chica ◽  
P.M. Bravo Díez ◽  
M. Preciado Calzada
Keyword(s):  
Yield Strength ◽  
Correlation Method ◽  
Small Punch Test ◽  
Steel Alloys ◽  
Small Punch ◽  
Punch Test

Optimization of the t/10 offset correlation method to obtain the yield strength with the Small Punch Test

2020 ◽  
Vol 534 ◽  
pp. 152177 ◽  
Author(s):  
Jose Calaf-Chica ◽  
Pedro Miguel Bravo Díez ◽  
Mónica Preciado Calzada ◽  
Maria-Jose Garcia-Tarrago
Keyword(s):  
Yield Strength ◽  
Correlation Method ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

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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