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BS ISO 16842:2021

BS ISO 16842:2021

$142.49

Metallic materials. Sheet and strip. Biaxial tensile testing method using a cruciform test piece

Published By Publication Date Number of Pages
BSI 2021 32
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This document specifies the method for measuring the stress-strain curves of sheet metals subject to biaxial tension using a cruciform test piece fabricated from a sheet metal sample. The applicable thickness of the sheet is 0,1 mm or more and 0,08 times or less of the arm width of the cruciform test piece (see Figure 1). The test temperature ranges from 10 °C to 35 °C. The amount of plastic strain applicable to the gauge area of the cruciform test piece depends on the force ratio, slit width of the arms, work hardening exponent (n-value) (see Annex B) and anisotropy of a test material.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Principle
5 Test piece
5.1 Shape and dimensions
11 5.2 Preparation of the test pieces
12 6 Testing method
6.1 Testing machine
13 6.2 Measurement method of force and strain
6.2.1 General
6.2.2 Measurement method of force
6.2.3 Measurement method of strain
6.2.4 Strain measurement positions
14 6.3 Installation of the test piece to a biaxial tensile testing machine
15 6.4 Testing methods
7 Determination of biaxial stress-strain curves
7.1 General
7.2 Determination of the original cross-sectional area of the test piece
7.3 Determination of true stress
16 7.4 Determination of true strain
17 7.5 Determination of true plastic strain
18 8 Test report
8.1 Information in the report
8.2 Additional note
19 Annex A (informative) Method for measuring a yield surface
23 Annex B (informative) Factors affecting the maximum equivalent plastic strain applicable to the gauge area of the test piece
25 Annex C (informative) Biaxial tensile testing machine
29 Bibliography

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BS ISO 16842:2021
$142.49