| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2020)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2020)
|
| Presentation Title |
Impulse-based Residual Stress Relief |
| Author(s) |
Bhuvi Nirudhoddi, Anupam Vivek, Glenn Daehn |
| On-Site Speaker (Planned) |
Bhuvi Nirudhoddi |
| Abstract Scope |
Recent impulse calibration studies have provided some insight into the mechanism of shock induced springback relief. The driving hypothesis for this physical phenomenon is that modest shockwaves relieve elastic residual stresses and result in net shape conformance. Calibration experiments were performed using the Vaporizing Foil Actuator (VFA) method to further understand this mechanism. The VFA method was used to deliver 1-3 GPa pressure waves to change the curvature of pre-strained aluminum workpieces to a fully flat shape. It is speculated that the change in shape is a consequence of elastic stress relief caused by the propagation of planar shockwaves. A mechanics and shock physics based theory for shockwave interaction with residual stresses is proposed. Preliminary pressure estimates were performed using a Photon Doppler Velocimeter and the Profile Indentation Pressure Evaluation (PIPE) method. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |