| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
New Methods for Fracture Detection of Automotive Steels |
| Author(s) |
Jacqueline Noder, Clifford Butcher |
| On-Site Speaker (Planned) |
Jacqueline Noder |
| Abstract Scope |
The VDA 238-100 tight-radius bend test has received significant attention from industry over the past decade because it provides a proportional plane strain – plane stress state until fracture. It will be demonstrated that the adoption of the vertical punch force as the unique metric for failure detection can lead to false positives. The punch force will reduce at large bend angles due to the mechanics of the test even in the absence of material failure. Two novel detection methods based on the nominal principal stress and the plastic work were evaluated on six different steel grades with a nominal ultimate tensile strength of approximately 590 MPa. For performance ranking of materials with the same strength level, the plastic work metric is found to be sufficiently sensitive to distinguish between various 590 MPa steel grades since the material hardening rate is directly embedded. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |