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

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 prediction method for the yield strength of steel alloys in the Small Punch Test

2018 ◽  
Vol 148 ◽  
pp. 153-166 ◽  
Author(s):  
Jose Calaf Chica ◽  
Pedro Miguel Bravo Díez ◽  
Mónica Preciado Calzada
Keyword(s):  
Yield Strength ◽  
Prediction 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

Yield Strength Evaluation by Small-Punch Test

2009 ◽  
Vol 37 (6) ◽  
pp. 101657 ◽  
Author(s):  
M. R. Mitchell ◽  
R. E. Link ◽  
Jerome Isselin ◽  
Tetsuo Shoji
Keyword(s):  
Yield Strength ◽  
Small Punch Test ◽  
Strength Evaluation ◽  
Small Punch ◽  
Punch Test

Influence of the material anisotropy in the estimation of the yield strength with the Small Punch Test

2020 ◽  
Vol 160 ◽  
pp. 112019
Author(s):  
Jose Calaf-Chica ◽  
Pedro Miguel Bravo Díez ◽  
Mónica Preciado Calzada
Keyword(s):  
Yield Strength ◽  
Material Anisotropy ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Small Punch Test on Mechanical Properties of Molybdenum Single Crystal Weld

2017 ◽  
Author(s):  
Yan Ma ◽  
Jianju Wang ◽  
Jinyun Lei
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Single Crystal ◽  
Electron Beam Welding ◽  
Standard Test ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Joint Properties ◽  
Reactor Fuel Element

Due to its good creep strength, molybdenum (Mo) single crystal is used for space thermionic reactor fuel element. However, stray grain formation during Mo single crystal welding leads to the degradation of mechanical properties. In this paper, Mo single crystal is welded by electron beam welding and the joint properties are evaluated by means of small punch test (SPT). The load-displacement curves of Mo single crystal matrix and fusion area are measured. The experimental data is fit to establish the relationship between yield load and standard test yield strength. The results show that the yield strength of the fusion is much lower than the other material. The micro hardness of the both materials is almost equal. Simultaneously the displacement value of the fusion area is the smallest which means the joint brittleness increases. SEM observation of rupture fracture demonstrates the embrittlement of the weld.

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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