On the Correlation of Fracture Quantities in Small Punch Test

2013 ◽  
Vol 592-593 ◽  
pp. 275-278
Author(s):  
Ferdinand Dobeš ◽  
Petr Dymáček
Keyword(s):  
Fracture Strain ◽  
Fracture Behaviour ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Strain Fracture ◽  
Constant Rate ◽  
Fracture Appearance ◽  
Mutual Relations

Several possible routes are available for estimation of fracture behaviour from the results of small punch tests performed at constant rate of deflection. The routes include: (i) measurement of relevant dimensions directly on ruptured specimens, (ii) determination of critical deflections on the load vs. deflection curves and (iii) integration of these curves up to specific points. Equivalent fracture strain, fracture energy or fracture toughness are then evaluated from the obtained quantities. The mutual relations among the quantities are demonstrated by the results of small punch tests performed on a Fe-Al-based alloy in the temperature range extending from brittle up to ductile fracture appearance.

An Analysis of Deformation and Fracture Behaviour of Zircaloy-4 Alloy Using Small Punch Test

2005 ◽  
Vol 475-479 ◽  
pp. 1415-1420 ◽  
Author(s):  
M.D. Callaghan ◽  
Wing Yiu Yeung ◽  
Maurice I. Ripley ◽  
David G. Carr
Keyword(s):  
Small Volume ◽  
Research Reactor ◽  
Fracture Strain ◽  
Fracture Behaviour ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Deformation And Fracture ◽  
Core Components ◽  
Radiation Induced

The small punch (SP) test is a novel technique that uses a relatively small volume of material, to enable a measure of load versus deflection to determine the mechanical behaviour of the alloy. This study aims to investigate the mechanical properties of Zircaloy-4 (Zr-4) alloy which will be used for construction of many of the core components in ANSTO’s replacement research reactor at Lucas Heights in Australia. The Zr-4 alloy was hydrided under different conditions to simulate the radiation-induced reduction in fracture toughness over the service life of the reactor. The SP test was applied to determine the deformation and fracture behaviour of the hydrided materials. It was found that as the hydride formation increased, the equivalent fracture strain (eqf) of the alloy decreased to lower values.

Application of Miniature Small Punch Test Specimen in Determination of Tensile Properties

2015 ◽  
pp. 1-8 ◽  
Author(s):  
R. Kopriva ◽  
M. Brumovsky ◽  
M. Kytka ◽  
M. Lasan ◽  
J. Siegl ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Test Specimen ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Determination of creep property of 1.25Cr0.5Mo pearlitic steels by small punch test

2013 ◽  
Vol 28 ◽  
pp. 215-221 ◽  
Author(s):  
Feng Hou ◽  
Hong Xu ◽  
Yucheng Wang ◽  
Li Zhang
Keyword(s):  
Creep Property ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Small punch test on the analysis of fracture behaviour of PLA-nanocomposite films

2014 ◽  
Vol 33 ◽  
pp. 21-29 ◽  
Author(s):  
C. Rodríguez ◽  
D. Arencón ◽  
J. Belzunce ◽  
M.Ll. Maspoch
Keyword(s):  
Fracture Behaviour ◽  
Nanocomposite Films ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Determination of Material Fracture Toughness by Circular Pre-Cracked Small Punch Test Specimens

2019 ◽  
Vol 795 ◽  
pp. 165-171
Author(s):  
Wu Lin Wang ◽  
Du Wei Wang ◽  
Kai Shu Guan
Keyword(s):  
Fracture Toughness ◽  
Empirical Correlation ◽  
Fracture Toughness Test ◽  
J Integral ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Determination Procedure ◽  
Material Fracture

Fracture toughness empirical correlation between SPT(Small Punch Test) with non-crack sample and standard fracture toughness test has been established in recent years. In order to compensate the imperfection of empirical correlation, such as absence theoretical basis, poor repeatability and universality, in this paper, an O-type pre-cracked sample was adopted to evaluate fracture toughness. The mechanical model of the sample is in compliance with plane strain condition in the direction of crack propagation. In this paper a determination procedure was studied and established, and the J-integral of steel Q345R was calculated using the procedure.

Investigation of the Hydrogen Embrittlement on the 65Mn Steel from the Nuclear Power Plant with Small Punch Method

2010 ◽  
Vol 118-120 ◽  
pp. 206-210
Author(s):  
Zhao Xi Wang ◽  
Hui Ji Shi ◽  
Guo Dong Zhang ◽  
Bao Ping Qu ◽  
Jian Lu ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Room Temperature ◽  
Fracture Strain ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Charging Time ◽  
Intergranular Brittle Fracture ◽  
Charging Current ◽  
Total Impact

Damage of metals due to the influence of hydrogen is quite frequent and leads to dangerous failures. The characteristics of the hydrogen embrittlemnt of the 65Mn steel were evaluated with small punch test. With the increment of the amount of the hydrogen absorbed into the alloy at room temperature, the strength and the toughness of the material reduce. From the small punch experimental results, it is found the total impact energy, the fracture strain and the fracture stress decrease with the increment of the cathodic hydrogen charging time. The fracture surfaces change from the typical ductile fracture with big voids to the typical intergranular brittle fracture mode after hydrogen absorbed in the specimens with higher charging current density.

scholarly journals Determination of J-initiation toughness using pre-cracked small punch test specimens

2019 ◽  
Vol 14 ◽  
pp. 529-536 ◽  
Author(s):  
Taslim D. Shikalgar ◽  
B.K. Dutta ◽  
J. Chattopadhyay
Keyword(s):  
Initiation Toughness ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

scholarly journals Determination of Strength and Fracture Toughness of Small Ceramic Discs Using the Small Punch Test and the Ball-on-three-balls Test

2014 ◽  
Vol 3 ◽  
pp. 961-966 ◽  
Author(s):  
Stefan Rasche ◽  
Stefan Strobl ◽  
Meinhard Kuna ◽  
Raul Bermejo ◽  
Tanja Lube
Keyword(s):  
Fracture Toughness ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test
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