The influence of a surface quality on measuring mechanical properties with a cylindrical indenter

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25510%2F16%3A39902497" target="_blank" >RIV/00216275:25510/16:39902497 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The influence of a surface quality on measuring mechanical properties with a cylindrical indenter

Original language description

The aim of the work is to develop a new method for yield strength determination of chosen corrosion resistant steels using the micro-indentation measurements. The main advantage of such method is a demand for minimal amount of analyzed material. In the frame of the experiment, the elastic-plastic behavior of special corrosion-resistant - ferritic, martensitic and austenitic - steels was investigated. These steel types are partly suitable for nuclear energetics and also for other fields with high demands on steel quality. The experiment is focused on discovering and defining of such surface quality which would be optimal for maximal yield strength evaluation accuracy determined by micro-indentation measurements, and along with on finding the strengthening trend of the steel types investigated. As the main tool for the evaluation, of the elastic-plastic response, the methodology based on the instrumented penetration test by means of 0.7 mm indenter diameter was chosen. The basic principle of the experiment was comparing evaluated yield strength with help of micro-indenter and those determined by classical tensile test. This paper also deals with FEM simulation of indentation by a flat-ended cylindrical punch into elastic-plastic material with assumed rough contact surfaces. This work shows one of the ways how to include the influence of rough surface into numerical calculation without requiring all asperities of contacting rough surfaces modelled by the finite elements in detail. The influence of the rough surface in combination with the elastic-plastic materials behavior on the shape of the loading curve is subject of this study.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JG - Metallurgy, metal materials

OECD FORD branch

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Project

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Continuities

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

METAL 2016: 25th International Conference on Metallurgy and Materials

ISBN

978-80-87294-67-3

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

712-717

Publisher name

TANGER, spol. s r.o.

Place of publication

Ostrava

Event location

Brno

Event date

May 25, 2016

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

000391251200114