Fracture toughness estimation of ductile materials using a modified energy method of the small punch test

2014 ◽  
Vol 29 (15) ◽  
pp. 1675-1680 ◽  
Author(s):  
Sisheng Yang ◽  
Zheng Yang ◽  
Xiang Ling
Keyword(s):  
Fracture Toughness ◽  
Energy Method ◽  
Small Punch Test ◽  
Small Punch ◽  
Ductile Materials ◽  
Punch Test ◽  
Image Position

Abstract

scholarly journals Possibility to Estimate Fracture Toughness of Ductile Steel Materials from Small Punch Test Data

2015 ◽  
Vol 130 ◽  
pp. 1029-1038
Author(s):  
J.-Y. Jeon ◽  
Y.-J. Kim ◽  
J.-W. Kim ◽  
S.-Y. Lee
Keyword(s):  
Fracture Toughness ◽  
Test Data ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Ductile Steel

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.

Influence of the Residual Stress on Mechanical Properties of Ductile Materials by Simulating Small Punch Test

2015 ◽  
Vol 750 ◽  
pp. 285-291
Author(s):  
He Hui Wang ◽  
Shao Jie Zhang ◽  
Yao Gang Wang ◽  
Kai Shu Guan
Keyword(s):  
Mechanical Properties ◽  
Residual Stress ◽  
Material Behavior ◽  
Small Punch Test ◽  
Small Punch ◽  
Ductile Materials ◽  
Punch Test ◽  
Original Specimen ◽  
Loading And Unloading ◽  
Simulated Material

This paper describes an approach to identify the influence of mechanical properties of the materials under the condition of containing residual stress. The numerical method of simulating small punch test (SPT) is used to determine the material response under loading. The simulated material behavior of the specimen is based on the ductile elastoplastic damage theory of Gurson, Tvergaard and Needleman (GTN). The residual stress can be prefabricated on the specimen by loading and unloading. By comparing the original specimen with the specimen contains residual stress, the change of the mechanical properties of the materials can be studied. The results of simulation indicate that the material properties decrease with the increase of the residual stress.

Fracture toughness prediction of aged CF8M using small punch test

2015 ◽  
Vol 38 (12) ◽  
pp. 1456-1465 ◽  
Author(s):  
J.-Y. Jeon ◽  
Y.-J. Kim ◽  
M.-Y. Lee ◽  
J.-W. Kim
Keyword(s):  
Fracture Toughness ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Application of the small punch test to determine the fracture toughness of metallic materials

2012 ◽  
Vol 35 (5) ◽  
pp. 441-450 ◽  
Author(s):  
E. CÁRDENAS ◽  
F. J. BELZUNCE ◽  
C. RODRÍGUEZ ◽  
I. PEÑUELAS ◽  
C. BETEGÓN
Keyword(s):  
Fracture Toughness ◽  
Metallic Materials ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Rate effects on the estimation of fracture toughness by small punch tests in hydrogen embrittlement

2019 ◽  
Vol 54 (7-8) ◽  
pp. 390-400 ◽  
Author(s):  
Borja Arroyo ◽  
Jose Alberto Álvarez ◽  
Federico Gutiérrez-Solana ◽  
Roberto Lacalle ◽  
Pablo González
Keyword(s):  
Fracture Toughness ◽  
Hydrogen Embrittlement ◽  
Slow Rate ◽  
Environment Interaction ◽  
Small Punch Test ◽  
Small Punch ◽  
Notched Specimens ◽  
Punch Test ◽  
Material Environment ◽  
Rate Effects

In this article, different techniques to test notched small punch test samples in fracture conditions in aggressive environments are studied, based on the comparison of the micromechanisms at different rates. Pre-embrittled samples subsequently tested in air at rates conventionally employed (0.01 and 0.002 mm/s) are compared to embrittled ones tested in environment at the same rates (0.01 and 0.002 mm/s) and at a very slow rate (5E–5 mm/s). A set of samples tested in environment under a set of constant loads that produce very slow rates completes the experimental results. As a conclusion, it is recommended to test small punch test notched specimens in environment at very slow rates, of around E–6 mm/s, when characterizing in hydrogen embrittlement scenarios, in order to allow the material–environment interaction to govern the process.

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