Publication detail

On the evaluation of strain-hardness reference curves from compression tests

PETRUŠKA, J., MAROŠ, B., JANÍČEK, L.

Original Title

On the evaluation of strain-hardness reference curves from compression tests

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

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 from

115

Pages to

119

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",
  annote="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.
",
  address="A. A. Balkema",
  booktitle="8th International Conference on Metal Forming - Metal Forming 2000",
  chapter="2194",
  institution="A. A. Balkema",
  year="2000",
  month="september",
  pages="115",
  publisher="A. A. Balkema",
  type="conference paper"
}