In situ computed tomography for the characterization of the fatigue damage development in glass fiber-reinforced polyurethane

2019 ◽  
Vol 61 (9) ◽  
pp. 821-828 ◽  
Author(s):  
Daniel Hülsbusch ◽  
Selim Mrzljak ◽  
Frank Walther
Keyword(s):  
Computed Tomography ◽  
Glass Fiber ◽  
Fatigue Damage ◽  
Fiber Reinforced ◽  
Damage Development ◽  
Glass Fiber Reinforced

Mechanism-Oriented Characterization of the Fatigue Behavior of Glass Fiber-Reinforced Polyurethane Based on Hysteresis and Temperature Measurements

2017 ◽  
Vol 742 ◽  
pp. 629-635 ◽  
Author(s):  
Daniel Huelsbusch ◽  
Michael Jamrozy ◽  
Selim Mrzljak ◽  
Frank Walther
Keyword(s):  
Glass Fiber ◽  
Fatigue Behavior ◽  
Temperature Measurements ◽  
Fiber Reinforced Polymers ◽  
Fiber Reinforced ◽  
Damage Development ◽  
Reinforced Polymers ◽  
Glass Fiber Reinforced ◽  
Wide Range

In order to optimize resource efficiency, glass fiber-reinforced polymers (GFRP) have been implemented in recent years in a wide range of applications of transport industries. In this context, GFR-epoxy (GFR-EP) is currently being used mainly because of their sufficiently investigated properties and production processes. Polyurethane (PU), however, shows advantages in terms of energy efficiency and damage tolerance. The aim of this study is the characterization of the fatigue behavior of GFR-PU by stepwise exploration of damage development on microscopic level. Therefore, multiple amplitude and constant amplitude tests have been carried out. Hysteresis and temperature measurements were applied in order to investigate the damage processes and correlated with in situ computed tomography (CT) in intermitting tests. The damage development and mechanisms could be characterized and separated. The results confirm known GFRP damage characteristics, whereas also material-specific peculiarities regarding crack development could be revealed.

scholarly journals A Fatigue Damage Model for Life Prediction of Injection-Molded Short Glass Fiber-Reinforced Thermoplastic Composites

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2250
Author(s):  
Mohammad Amjadi ◽  
Ali Fatemi
Keyword(s):  
Injection Molding ◽  
Glass Fiber ◽  
Fatigue Damage ◽  
Life Prediction ◽  
Glass Fibers ◽  
Damage Model ◽  
Fiber Reinforced ◽  
Short Glass Fiber ◽  
Glass Fiber Reinforced ◽  
Short Glass

Short glass fiber-reinforced (SGFR) thermoplastics are used in many industries manufactured by injection molding which is the most common technique for polymeric parts production. Glass fibers are commonly used as the reinforced material with thermoplastics and injection molding. In this paper, a critical plane-based fatigue damage model is proposed for tension–tension or tension–compression fatigue life prediction of SGFR thermoplastics considering fiber orientation and mean stress effects. Temperature and frequency effects were also included by applying the proposed damage model into a general fatigue model. Model predictions are presented and discussed by comparing with the experimental data from the literature.

Characterization of Syzygium cumini particulates filled E‐glass fiber‐reinforced epoxy composites

2021 ◽  
Author(s):  
Chinnappan Balaji Ayyanar ◽  
S. K. Pradeep Mohan ◽  
C. Bharathiraj ◽  
Sanjay Rangappa ◽  
Suchart Siengchin
Keyword(s):  
Glass Fiber ◽  
Epoxy Composites ◽  
Syzygium Cumini ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced
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