| 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 |
On the Characterization of Fracture Loci in Thin-walled Tube Forming |
| Author(s) |
Joćo Magrinho, Maria Beatriz Silva, Paulo Martins |
| On-Site Speaker (Planned) |
Maria Beatriz Silva |
| Abstract Scope |
This paper is focused on the formability limits by fracture of thin-walled tubes and provides for the first time ever the fracture forming limit lines associated to crack opening by tension (mode I), by in-plane shear (mode II) and by mixed-mode consisting of crack opening by modes I and II of fracture mechanics. This is accomplished by experimentation that combines digital image correlation and determination of gauge length strains in double notched tensile test (DNTT), staggered DNTT and shear test specimens. Results are plot in principal strain space and the crack opening modes are confirmed by fractography analysis performed with a scanning electron microscope. DNTT specimens are also used to determine fracture toughness in mode I. The utilization of DNTT, staggered DNTT and shear tests allow obtaining the strain loading paths and fracture loci across a wide range of forming conditions ranging from plane strain to pure shear. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |