Improved characterization of failure behaviours of sheet metals based on pattern recognition methods (finished)

Funding period:

Start: 1. January 2021
Ende: 31. December 2022
Verlängert: 30. June 2023

Abstract

The forming limit curve (FLC) is used in industry to evaluate the failure limits of sheet materials and is determinied by Nakajima tests. During the test, an optical strain measurement of the specimen surface is performed simultaneously, which allows the calculation of the limit strain value. For a correct process description, including FLC, an improved automated generation of failure characteristics and time by applying pattern recognition methods is helpful. The developed method is extended and adapted to additional test methods in the field of material characterization, such as uniaxial and notched tensile-, hydraulic bulge- and bending tests. For validation purposes, metallographic investigations and interwies evaluated by experts will be performed.

Research groups

• Materials Characterization and Modeling

Publications