| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Advanced Characterization for Industrial Applications
|
| Presentation Title |
Tensile Behavior of Metal AM Lattice Structures |
| Author(s) |
Ben Dimarco, Jeremy Seidt, Ariel Gluck, Jacob Rindler, Edward Herderick |
| On-Site Speaker (Planned) |
Ben Dimarco |
| Abstract Scope |
Complex cellular and lattice structures offer an exciting opportunity for tailored mechanical properties. Additive manufacturing (AM) is uniquely suited to produce complex lattice structures. There is an unmet need for a standard approach to mechanical testing and evaluation of these lattice structures in order to support their adoption into demanding sectors such as defense, biomedical and commercial applications.
The key objective of this work is to define a tensile test geometry appropriate for a range of different metal printed lattice designs and still provide repeatable mechanical property measurement. This presentation will include results for laser powder bed fusion printing of 316L lattice tensile bars and their static tensile testing using 3D Direct Image Correlation (3D DIC). Failure analysis is also included in the results. Designs tested include fluorite, bcc, TPMS, kelvin, and auxetic structures. The presentation will conclude with a perspective on future developments for metal printing testing standards.
Acknowledgement: This effort was performed through the National Center for Defense Manufacturing and Machining under the America Makes Program entitled “Tensile Behavior of AM Lattice Structures” and is based on research sponsored by Air Force Research Laboratory under agreement FA8650-20-2-5700. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation thereon.
Disclaimer: The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the Government. Distribution authorized to U.S. Government Agencies and America Makes Members. Other request for this document shall be referred to AFRL/RXMS, Wright-Patterson Air Force Base, OH 45433-7750. |