| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
Strain Field Mining of Steady-state Tearing Fields in Thin Film, Heterogeneous Fiber Networks |
| Author(s) |
Sarah A. Paluskiewicz, Christopher L. Muhlstein |
| On-Site Speaker (Planned) |
Sarah A. Paluskiewicz |
| Abstract Scope |
Paper is a heterogeneous, anisotropic fiber network with ubiquitous applications. Its mechanical properties are deeply influenced by the network structure. We used digital image correlation as a non-contact, full-field method to characterize the progression of damage mechanisms in paper with double-edge notch tensile (DENT). Initially, crack growth accelerated then once the peak nominal stress was achieved, steady-state tearing prevailed until a final overload was achieved. At overload, when apparent crack length over width is projected to unity, there is non-zero nominal offset stress (8.0 MPa) due to fiber bridging. We found that the size and shape (3 mm oval) of the steady-state fracture process zone can be related back to the microstructural characteristics, specifically the floc size (3 mm). The remaining ligament (1.9 ± 1.4 mm) at overload typically remained less than the characteristic floc size. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Thin Films and Interfaces, Biomaterials |