TY - JOUR

T1 - Evaluation and consideration of local specimen material properties in lifetime prediction of short fiber-reinforced PA6T/6I

AU - Stadler, Gabriel

AU - Primetzhofer, Andreas

AU - Pinter, Gerald

AU - Grün, Florian

N1 - Publisher Copyright: © 2022 John Wiley & Sons, Ltd.

PY - 2022/2/1

Y1 - 2022/2/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85123958851&partnerID=8YFLogxK

U2 - 10.1111/ffe.13634

DO - 10.1111/ffe.13634

M3 - Article

AN - SCOPUS:85123958851

VL - 45.2022

SP - 980

EP - 990

JO - Fatigue and Fracture of Engineering Materials and Structures

JF - Fatigue and Fracture of Engineering Materials and Structures

SN - 8756-758X

IS - 4

M1 - 13634

ER -