Assessment of Material Properties by Means of the Small Punch Test

2015 ◽  
pp. 127-157 ◽  
Author(s):  
Martin Abendroth ◽  
Stefan Soltysiak
Keyword(s):  
Material Properties ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

scholarly journals Mechanics of the small punch test: a review and qualification of additive manufacturing materials

2021 ◽  
Vol 56 (18) ◽  
pp. 10707-10744
Author(s):  
Jonathan Torres ◽  
Ali P. Gordon
Keyword(s):  
Additive Manufacturing ◽  
Material Properties ◽  
Materials Science ◽  
Contemporary Literature ◽  
The Body ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Testing Data ◽  
The Relationship

AbstractThe small punch test (SPT) was developed for situations where source material is scarce, costly or otherwise difficult to acquire, and has been used for assessing components with variable, location-dependent material properties. Although lacking standardization, the SPT has been employed to assess material properties and verified using traditional testing. Several methods exist for equating SPT results with traditional stress–strain data. There are, however, areas of weakness, such as fracture and fatigue approaches. This document outlines the history and methodologies of SPT, reviewing the body of contemporary literature and presenting relevant findings and formulations for correlating SPT results with conventional tests. Analysis of literature is extended to evaluating the suitability of the SPT for use with additively manufactured (AM) materials. The suitability of this approach is shown through a parametric study using an approximation of the SPT via FEA, varying material properties as would be seen with varying AM process parameters. Equations describing the relationship between SPT results and conventional testing data are presented. Correlation constants dictating these relationships are determined using an accumulation of data from the literature reviewed here, along with novel experimental data. This includes AM materials to assess the fit of these and provide context for a wider view of the methodology and its interest to materials science and additive manufacturing. A case is made for the continued development of the small punch test, identifying strengths and knowledge gaps, showing need for standardization of this simple yet highly versatile method for expediting studies of material properties and optimization.

A technique for the determination of post-yield material properties from the small punch test

2003 ◽  
Vol 38 (4) ◽  
pp. 367-376 ◽  
Author(s):  
A. A Zidan ◽  
D. J Brookfield
Keyword(s):  
Material Properties ◽  
Optimization Technique ◽  
Pressure Vessels ◽  
Reliable Estimate ◽  
Displacement Curve ◽  
Large Set ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Von Mises

The aim of the present work was to determine post-yield material properties from small punch test results, i.e. from the force-displacement curve obtained in such a test. This determination was made by comparing the experimental curve with a large set of previously determined finite element (FE) curves for differing post-yield properties expressed in terms of Ramberg and Osgood parameters. A simple cost function was then used to find the closest FE curve and thus provide an estimate of the post-yield properties. This estimate was then updated using an optimization technique based on the Matlab ‘fminsearch’ function and an interface with the ABAQUS FE code, giving a reliable estimate of the post-yield material properties. The FE analysis and model were validated by comparison with other small punch tests and the FE curves were additionally used to determine von Mises stresses, equivalent plastic strains and displacements. The method used to determine post-yield properties from small specimens has been demonstrated by determining the material properties of stainless steel. The technique is particularly relevant to those steels used in pressure vessels.

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

Evaluation of hydrogen related degradation of API X42 pipeline under hydrogen/natural gas mixture conditions using small punch test

2021 ◽  
Vol 113 ◽  
pp. 102961
Author(s):  
Thanh Tuan Nguyen ◽  
Jong Seo Park ◽  
Seung Hoon Nahm ◽  
Un Bong Beak
Keyword(s):  
Natural Gas ◽  
Gas Mixture ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Predicting ductile fracture of cracked pipes using small punch test data

2021 ◽  
Vol 87 ◽  
pp. 104211
Author(s):  
Jong-Min Lee ◽  
Jin-Ha Hwang ◽  
Yun-Jae Kim ◽  
Jin-Weon Kim
Keyword(s):  
Ductile Fracture ◽  
Test Data ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test
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