In Situ Characterization of Damage Development in Cottonid Due to Quasi-Static Tensile Loading
Cottonid is a layered material based 100% on cellulose that holds excellent material properties by being completely sustainable. The finite nature of petroleum-based resources nowadays makes these properties significant for technical applications again. To understand how Cottonid reacts to applicati...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-05-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/13/9/2180 |
| _version_ | 1797568390412369920 |
|---|---|
| author | Ronja Scholz Alexander Delp Frank Walther |
| author_facet | Ronja Scholz Alexander Delp Frank Walther |
| author_sort | Ronja Scholz |
| collection | DOAJ |
| description | Cottonid is a layered material based 100% on cellulose that holds excellent material properties by being completely sustainable. The finite nature of petroleum-based resources nowadays makes these properties significant for technical applications again. To understand how Cottonid reacts to application-oriented mechanical loads and how it fails, development of microstructural damage on the surface and in the volume of Cottonid was studied using innovative in situ testing techniques for the first time. Quasi-static tensile tests were comparatively performed in a scanning electron microscope as well as a microfocus computer tomograph, and the development of defects present in the initial condition of the material was investigated. In the elastic region, no visible damage initiation on the surface and a decrease of overall void volume within the gauge length could be detected. When reaching the yield strength, crack initiation on the surface starts at critical areas, like pores and microcracks, which propagation and assembly could be visualized via scanning electron micrographs. In the plastic region, an increase in void volume could be shown in the gauge length until final failure of the specimen. Innovative material testing techniques presented in this study support lifetime estimation in technical applications and understanding of process–structure–property relations. Particularly, characterization of microstructural damage development due to a mechanical load, which leads to final failure of the specimen, is essential to be able to create material models for lifetime prediction in respect to variable manufacturing or application parameters. |
| first_indexed | 2024-03-10T19:56:15Z |
| format | Article |
| id | doaj.art-3ece4b0e605440f28a4b213dcc3cb31e |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T19:56:15Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-3ece4b0e605440f28a4b213dcc3cb31e2023-11-19T23:55:31ZengMDPI AGMaterials1996-19442020-05-01139218010.3390/ma13092180In Situ Characterization of Damage Development in Cottonid Due to Quasi-Static Tensile LoadingRonja Scholz0Alexander Delp1Frank Walther2Department of Materials Test Engineering (WPT), TU Dortmund University, Baroper Str. 303, D-44227 Dortmund, GermanyDepartment of Materials Test Engineering (WPT), TU Dortmund University, Baroper Str. 303, D-44227 Dortmund, GermanyDepartment of Materials Test Engineering (WPT), TU Dortmund University, Baroper Str. 303, D-44227 Dortmund, GermanyCottonid is a layered material based 100% on cellulose that holds excellent material properties by being completely sustainable. The finite nature of petroleum-based resources nowadays makes these properties significant for technical applications again. To understand how Cottonid reacts to application-oriented mechanical loads and how it fails, development of microstructural damage on the surface and in the volume of Cottonid was studied using innovative in situ testing techniques for the first time. Quasi-static tensile tests were comparatively performed in a scanning electron microscope as well as a microfocus computer tomograph, and the development of defects present in the initial condition of the material was investigated. In the elastic region, no visible damage initiation on the surface and a decrease of overall void volume within the gauge length could be detected. When reaching the yield strength, crack initiation on the surface starts at critical areas, like pores and microcracks, which propagation and assembly could be visualized via scanning electron micrographs. In the plastic region, an increase in void volume could be shown in the gauge length until final failure of the specimen. Innovative material testing techniques presented in this study support lifetime estimation in technical applications and understanding of process–structure–property relations. Particularly, characterization of microstructural damage development due to a mechanical load, which leads to final failure of the specimen, is essential to be able to create material models for lifetime prediction in respect to variable manufacturing or application parameters.https://www.mdpi.com/1996-1944/13/9/2180Cottonidcellulosein situ testingscanning electron microscopemicrofocus computer tomographquasi-static loading |
| spellingShingle | Ronja Scholz Alexander Delp Frank Walther In Situ Characterization of Damage Development in Cottonid Due to Quasi-Static Tensile Loading Materials Cottonid cellulose in situ testing scanning electron microscope microfocus computer tomograph quasi-static loading |
| title | In Situ Characterization of Damage Development in Cottonid Due to Quasi-Static Tensile Loading |
| title_full | In Situ Characterization of Damage Development in Cottonid Due to Quasi-Static Tensile Loading |
| title_fullStr | In Situ Characterization of Damage Development in Cottonid Due to Quasi-Static Tensile Loading |
| title_full_unstemmed | In Situ Characterization of Damage Development in Cottonid Due to Quasi-Static Tensile Loading |
| title_short | In Situ Characterization of Damage Development in Cottonid Due to Quasi-Static Tensile Loading |
| title_sort | in situ characterization of damage development in cottonid due to quasi static tensile loading |
| topic | Cottonid cellulose in situ testing scanning electron microscope microfocus computer tomograph quasi-static loading |
| url | https://www.mdpi.com/1996-1944/13/9/2180 |
| work_keys_str_mv | AT ronjascholz insitucharacterizationofdamagedevelopmentincottonidduetoquasistatictensileloading AT alexanderdelp insitucharacterizationofdamagedevelopmentincottonidduetoquasistatictensileloading AT frankwalther insitucharacterizationofdamagedevelopmentincottonidduetoquasistatictensileloading |