BS EN ISO 16808:2022 – TC
$186.33
Tracked Changes. 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 | 80 |
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | 30458905 |
| 49 | A-30430392 |
| 50 | undefined |
| 52 | European foreword Endorsement notice |
| 54 | Foreword |
| 55 | 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols and abbreviated terms |
| 56 | 5 Principle |
| 57 | 6 Test equipment |
| 59 | 7 Optical measurement system |
| 60 | 8 Test piece 8.1 General 8.2 Application of grid 8.2.1 Type of grid 8.2.2 Grid application 9 Procedure |
| 61 | 10 Evaluation methods for the determination of the curvature and strains at the pole |
| 62 | 11 Calculation of biaxial stress-strain curves |
| 63 | 12 Test report |
| 65 | Annex A (informative) Test procedure for a quality check of the optical measurement system |
| 68 | Annex B (informative) Computation of the curvature on the basis of a response surface |
| 70 | Annex C (informative) Determination of the equi-biaxial stress point of the yield locus and the hardening curve |
| 78 | Bibliography |
