Mesure de Déformations | Emboutissage | Lois de comportement | | | | | Improved Determination of Yield Stress for Sheet Metal Materials | |  | | | | Systèmes de mesure: ARAMIS | | | | Keywords: True stress, true strain | | | | The material characteristics of sheet metal material to be used, for example in the design of a new car, have to be determined and specified precisely and reproducibly in a test laboratory. An important magnitude to describe the material behaviour during the forming process and in case of a crash is the yield stress. |  | |
| | | Optical Measuring Technologies in Sheet Metal Processing | |  | | | | Systèmes de mesure: ARGUS, ATOS | | | | Keywords: Measuring instrument, Sheet metal, 3D digitizing, Material properties | | | | During recent years, optical measuring technologies in sheet metal forming and tooling have been used more and more in the industry. Main applications are the digitizing of metal sheet parts and tools, forming analysis of metal sheets as well as the determination of material properties. Good interfaces to conventional CAD/CAM and numerical simulation systems made such optical measuring systems a part of complex process chains. These process chains mainly focus on optimizing the development of products and production processes and on improving the product quality. Using optical systems considerably decreases the development time for products and production while improving the quality. | | |
| | Determination of Forming Limit Diagrams using ARAMIS | |  | | | | Systèmes de mesure: ARAMIS | | | | Keywords: Forming Limit Curve (FLC), Forming Limit Diagram (FLD), material characteristics | | | | In this paper the optical measurement system ARAMIS is presented that allows a high local resolution and highly precise strain analyses in sheet metal forming. | | |
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