Evaluation and consideration of local specimen material properties in lifetime prediction of short fiber-reinforced PA6T/6I
Research output: Contribution to journal › Article › Research › peer-review
Authors
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External Organisational units
- Polymer Competence Center Leoben GmbH
Abstract
To exploit the full material potential of short fiber-reinforced PA6T/6I, specific component calculations including anisotropic material behavior is necessary. For this, different failure criteria and fatigue models are used to describe the behavior during a component service life. This paper deals with the determination and consideration of fiber orientations (FOs) for failure criteria and fatigue calculations. Therefore, a novel method to determine FO distributions across injection-molded plates is proposed. The developed method allows a forecast of FOs for different specimen extraction positions and angles on injection-molded plates by using only a few measured reference points. As a result, fatigue models can be calibrated with the strength values and the corresponding FO, calculated for fracture position. The performed tests show a non-negligible influence of failure positions, due to FO distributions along the specimens. So, the FO determination method delivers an improvement in strength values estimation.
Details
Original language | English |
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Article number | 13634 |
Pages (from-to) | 980-990 |
Number of pages | 11 |
Journal | Fatigue and Fracture of Engineering Materials and Structures |
Volume | 45.2022 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Feb 2022 |