BS EN ISO 16808:2022

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Metallic materials. Sheet and strip. Determination of biaxial stress-strain curve by means of bulge test with optical measuring systems

Published By	Publication Date	Number of Pages
BSI	2022	32

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Categories: 77.040.10 - Mechanical testing of metals, BSI

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Description

This document specifies a method for determination of the biaxial stress-strain curve of metallic sheets having a thickness below 3 mm in pure stretch forming without significant friction influence. In comparison with tensile test results, higher strain values can be achieved. NOTE In this document, the term “biaxial stress-strain curve” is used for simplification. In principle, in the test the “biaxial true stress-true strain curve” is determined.

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PDF Pages	PDF Title
2	undefined
4	European foreword Endorsement notice
6	Foreword
7	1 Scope 2 Normative references 3 Terms and definitions 4 Symbols and abbreviated terms
8	5 Principle
9	6 Test equipment
11	7 Optical measurement system
12	8 Test piece 8.1 General 8.2 Application of grid 8.2.1 Type of grid 8.2.2 Grid application 9 Procedure
13	10 Evaluation methods for the determination of the curvature and strains at the pole
14	11 Calculation of biaxial stress-strain curves
15	12 Test report
17	Annex A (informative) Test procedure for a quality check of the optical measurement system
20	Annex B (informative) Computation of the curvature on the basis of a response surface
22	Annex C (informative) Determination of the equi-biaxial stress point of the yield locus and the hardening curve
30	Bibliography

Additional information

Status	Definitive
Pages	32
Publication Date	2022-07-08
ISBN	978 0 539 16180 9
Standard Number	BS EN ISO 16808:2022
Title	Metallic materials. Sheet and strip. Determination of biaxial stress-strain curve by means of bulge test with optical measuring systems
Identical National Standard Of	EN ISO 16808, ISO 16808:2022
Replaces	BS EN ISO 16808:2014
Descriptors	Mechanical testing, Sheet materials, Bend testing, Metals, Ductility testing, Deformation, Bending stress, Strips, Mathematical calculations
Publisher	BSI
Committee	ISE/101/1
ICS Codes	77.040.10 - Mechanical testing of metals

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BS EN ISO 16808:2022

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