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Evaluation and consideration of local specimen material properties in lifetime prediction of short fibre reinforced PA6T/6I
  • +1
  • Gabriel Stadler,
  • Andreas Primetzhofer,
  • Gerald Pinter,
  • Florian Grün
Gabriel Stadler
Montanuniversitat Leoben
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Andreas Primetzhofer
Polymer Competence Center Leoben GmbH
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Gerald Pinter
Montanuniversitat Leoben
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Florian Grün
Montanuniversitat Leoben
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Abstract

To exploit the full material potential of short fibre reinforced PA6T/6I, specific component calculations including aniso- tropic material behaviour is necessary. For this, different failure criteria and fatigue models are used to describe the behaviour during a component service life. This paper deals with the determination and consideration of fibre orientations for failure criteria and fatigue calculations. Therefore, a novel method to determine fibre orientation (FO) distributions across injection moulded plates, is proposed. The developed method allows a forecast of FOs for different specimen extraction positions and angles on injection moulded 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 fibre orientation distributions along the specimens. So, the FO determination method delivers an improvement in strength values estimation.
05 Nov 2021Submitted to Fatigue & Fracture of Engineering Materials & Structures
06 Dec 2021Assigned to Editor
06 Dec 2021Submission Checks Completed
06 Dec 2021Review(s) Completed, Editorial Evaluation Pending
08 Dec 2021Editorial Decision: Accept