Publication detail
On the evaluation of strain-hardness reference curves from compression tests
PETRUŠKA, J. MAROŠ, B. JANÍČEK, L.
English title
On the evaluation of strain-hardness reference curves from compression tests
Type
conference paper
Language
en
Original abstract
Hardness measurement is a common method of strain inhomogeneity evaluation, applicable regularly as a part of industrial forming processes analysis. The relation between measured hardness and strain is derived from so called strain-hardness reference curves, obtained usually by evaluation of compression tests for given material under relevant thermomechanical conditions. The procedure of reference curves evaluation is traditionally based on mean values of measured hardness and assumed homogeneous strain, obtained at each level of specimen compression. Using such “mean value” reference curves subsequently for local evaluation of strain in the industrial products can be questionable. With the help of numerical simulation of compression test, strain-hardness reference curve is constructed directly from local values. Reliability of the “mean value” reference curves can be thus quantified.
English abstract
Hardness measurement is a common method of strain inhomogeneity evaluation, applicable regularly as a part of industrial forming processes analysis. The relation between measured hardness and strain is derived from so called strain-hardness reference curves, obtained usually by evaluation of compression tests for given material under relevant thermomechanical conditions. The procedure of reference curves evaluation is traditionally based on mean values of measured hardness and assumed homogeneous strain, obtained at each level of specimen compression. Using such “mean value” reference curves subsequently for local evaluation of strain in the industrial products can be questionable. With the help of numerical simulation of compression test, strain-hardness reference curve is constructed directly from local values. Reliability of the “mean value” reference curves can be thus quantified.
Keywords in English
hrdness mesurement, forming, finite element simulation
RIV year
2000
Released
03.09.2000
Publisher
A. A. Balkema
Location
Krakow, Polsko
ISBN
90-5809-157-0
Book
8th International Conference on Metal Forming - Metal Forming 2000
Pages count
5
BIBTEX
@inproceedings{BUT2194,
author="Jindřich {Petruška} and Bohumil {Maroš} and Libor {Janíček},
title="On the evaluation of strain-hardness reference curves from compression tests",
booktitle="8th International Conference on Metal Forming - Metal Forming 2000",
year="2000",
month="September",
publisher="A. A. Balkema",
address="Krakow, Polsko",
isbn="90-5809-157-0"
}