Determination of Ductile Material Properties by Means of the Small Punch Test and Neural Networks
- 1 July 2004
- journal article
- research article
- Published by Wiley in Advanced Engineering Materials
- Vol. 6 (7) , 536-540
- https://doi.org/10.1002/adem.200400405
Abstract
This paper compares two different methods for the identification of ductile properties of materials using the small punch test to measure the material response under loading. The finite element method is used to calculate the load displacement curve of the punch depending on the parameters of a hardening law. Via systematical variation of the material parameters a data base is built up, which is used to train neural networks. The second method allows the indentification of material parameters by using a conjugate directions algorithm, which minimizes the error between an experimental load displacement curve and one calculated by the network function.Keywords
This publication has 10 references indexed in Scilit:
- Small Punch Test : EPRI-CEA Finite Element Simulation Benchmark and Inverse Method for the Estimation of Elastic Plastic BehaviorPublished by ASTM International ,2002
- Determination of Poisson’s Ratio by Spherical Indentation Using Neural Networks—Part I: TheoryJournal of Applied Mechanics, 2000
- Toughness losses in low alloy steels at high temperatures: an appraisal of certain factors concerning the small punch testInternational Journal of Pressure Vessels and Piping, 1998
- Small punch tests to estimate the mechanical properties of steels for steam power plant: I. Mechanical strengthInternational Journal of Pressure Vessels and Piping, 1998
- Estimation of mechanical properties of irradiated nuclear pressure vessel steel by use of subsized CT specimen and small punch specimenScripta Metallurgica et Materialia, 1991
- Small punch test to predict ductile fracture toughness JIC and brittle fracture toughness KICScripta Metallurgica et Materialia, 1991
- Small punch test evaluation of intergranular embrittlement of an alloy steelScripta Metallurgica, 1983
- Influence of voids on shear band instabilities under plane strain conditionsInternational Journal of Fracture, 1981
- The development of a miniaturized disk bend test for the determination of postirradiation mechanical propertiesJournal of Nuclear Materials, 1981
- Continuum Theory of Ductile Rupture by Void Nucleation and Growth: Part I—Yield Criteria and Flow Rules for Porous Ductile MediaJournal of Engineering Materials and Technology, 1977