Effect of fiber orientation, stress state and notch radius on the impact properties of short glass fiber reinforced polypropylene

2015 ◽  
Vol 43 ◽  
pp. 1-9 ◽  
Author(s):  
A.M. Hartl ◽  
M. Jerabek ◽  
R.W. Lang
Keyword(s):  
Stress State ◽  
Glass Fiber ◽  
Fiber Orientation ◽  
Fiber Reinforced ◽  
Notch Radius ◽  
Impact Properties ◽  
Short Glass Fiber ◽  
Glass Fiber Reinforced ◽  
The Impact ◽  
Short Glass

The Influence of Alumina Filler on Impact Properties of Short Glass Fiber Reinforced Epoxy

2013 ◽  
Vol 393 ◽  
pp. 88-93 ◽  
Author(s):  
Mohd Shahneel Saharudin ◽  
Aidah Jumahat ◽  
Amir Z.A. Kahar ◽  
Shaharudin Ahmad
Keyword(s):  
Glass Fiber ◽  
Fiber Reinforced ◽  
Depth Of Penetration ◽  
Impact Properties ◽  
Impact Time ◽  
Short Glass Fiber ◽  
Glass Fiber Reinforced ◽  
The Impact ◽  
Total Impact ◽  
Short Glass

mpact resistance is one of the main consideration in measuring service life, liability and safety of polymer composite structures or products. Impact resistance of a composite material can be measured in terms of energy absorption, depth of penetration and total impact time. In this study, the influence of alumina Al2O3on impact properties of short glass fiber reinforced polymer was investigated. The drop weight impact tests were performed in accordance to ASTM D7136 standard using Dynatup impact tester. Based on the results, the incorporation of micronsize alumina filler enhanced the energy absorbed during crushing, reduced the depth of penetration of the impactor and expanded the total impact time hence improved the impact properties of the composites.

OS1716 Influence of Fiber Diameter and Cross Sectional Shape on the Impact Properties of Short Glass Fiber Reinforced Polyamide

2014 ◽  
Vol 2014 (0) ◽  
pp. _OS1716-1_-_OS1716-3_ ◽  
Author(s):  
Kento OZAWA ◽  
Tae Sung KIM ◽  
Yoshihiko ARAO ◽  
Norihiko TANIGUCHI ◽  
Tsuyoshi NISHIWAKI ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Fiber Diameter ◽  
Fiber Reinforced ◽  
Cross Sectional ◽  
Impact Properties ◽  
Short Glass Fiber ◽  
Glass Fiber Reinforced ◽  
Sectional Shape ◽  
The Impact ◽  
Short Glass

Effects of Fiber Orientation and Moisture on the Crack Growth in Short Glass Fiber Reinforced Polyamide

2012 ◽  
Vol 14 (10) ◽  
pp. 867-872 ◽  
Author(s):  
Stephan Günzel ◽  
Stefan Hickmann ◽  
Christian Wittemeyer ◽  
Volker Trappe
Keyword(s):  
Glass Fiber ◽  
Crack Growth ◽  
Fiber Orientation ◽  
Fiber Reinforced ◽  
Short Glass Fiber ◽  
Glass Fiber Reinforced ◽  
Short Glass

scholarly journals Comparison of Real and Simulated Fiber Orientations in Injection Molded Short Glass Fiber Reinforced Polyamide by X‑ray Microtomography

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 29
Author(s):  
Rafał Żurawik ◽  
Julia Volke ◽  
Jan-Christoph Zarges ◽  
Hans-Peter Heim
Keyword(s):  
Glass Fiber ◽  
Process Parameters ◽  
Fiber Orientation ◽  
Fiber Reinforced ◽  
X Ray ◽  
The Real ◽  
Short Glass Fiber ◽  
Glass Fiber Reinforced ◽  
Injection Molded ◽  
Short Glass

During injection molding of short glass fiber reinforced composites, a complex structure is formed due to the fiber movement. The resulting fiber orientation can be predicted using various simulation models. However, the models are known to have inadequacies andthe influence of process and model parameters is not clearly and comprehensively described. In this study, the aforementioned model and process parameters are investigated to determine the dependencies of the individual influences on the real and simulated fiber orientation. For this purpose, specimens are injection molded at different process parameters. Representative regions of the specimens are measured using X-ray microtomography and dynamic image analysis to determine the geometric properties of the fibers as well as their orientations. Furthermore, simulations are performed with the simulation software Moldflow® using different mesh types and densities as well as varying parameters of the MRD model to represent the real fiber orientations. The results show that different orientation areas arise in the samples, which cannot be represented with a simulation varying only one parameter. Several simulations must be carried out in order to represent flow regions occurring in the specimen as realistically as possible.

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.

scholarly journals Warpage Reduction of Glass Fiber Reinforced Plastic Using Microcellular Foaming Process Applied Injection Molding

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 360 ◽  
Author(s):  
Hyun Kim ◽  
Joo Sohn ◽  
Youngjae Ryu ◽  
Shin Kim ◽  
Sung Cha
Keyword(s):  
Injection Molding ◽  
Glass Fiber ◽  
Fiber Orientation ◽  
Mechanical And Thermal Properties ◽  
Micro Ct ◽  
Fiber Reinforced ◽  
Foaming Process ◽  
Microcellular Foaming ◽  
Glass Fiber Reinforced ◽  
The Impact

This study analyzes the fundamental principles and characteristics of the microcellular foaming process (MCP) to minimize warpage in glass fiber reinforced polymer (GFRP), which is typically worse than that of a solid polymer. In order to confirm the tendency for warpage and the improvement of this phenomenon according to the glass fiber content (GFC), two factors associated with the reduction of the shrinkage difference and the non-directionalized fiber orientation were set as variables. The shrinkage was measured in the flow direction and transverse direction, and it was confirmed that the shrinkage difference between these two directions is the cause of warpage of GFRP specimens. In addition, by applying the MCP to injection molding, it was confirmed that warpage was improved by reducing the shrinkage difference. To further confirm these results, the effects of cell formation on shrinkage and fiber orientation were investigated using scanning electron microscopy, micro-CT observation, and cell morphology analysis. The micro-CT observations revealed that the fiber orientation was non-directional for the MCP. Moreover, it was determined that the mechanical and thermal properties were improved, based on measurements of the impact strength, tensile strength, flexural strength, and deflection temperature for the MCP.

Material Selection and Application of Abrasive-Liquid Device Sealing Bush

2011 ◽  
Vol 127 ◽  
pp. 110-114
Author(s):  
Rui Zeng ◽  
Chang Long Du ◽  
Jing Zhao ◽  
Rui Xu
Keyword(s):  
Glass Fiber ◽  
Abrasive Water Jet ◽  
Fiber Reinforced ◽  
Short Glass Fiber ◽  
Glass Fiber Reinforced ◽  
Water Jet Cutting ◽  
Weight Content ◽  
Abrasive Water Jet Cutting ◽  
Cutting System ◽  
Short Glass

In order to make the switch valve in abrasive-liquid device of premixed abrasive water jet cutting system work normally, the sealing bush which ensures the pressure constant and the switch smooth is needed. The structure, material and craft of the switch valve sealing bush are studied in this paper. The different weight content of short glass fiber reinforced nylon is tested in the environment of no lubricant, water lubricant and oil lubricant. The result shows that in oil lubricant environment, the 33% weight content of short glass fiber reinforced nylon composites have the best capabilities and the least resistance of friction. The experimental result proves that the sealing bush made by the prepared short glass fiber reinforced nylon composites can meet the require of the premixed abrasive water jet cutting system, according to which the sealing bush is producted and assembled to the abrasive-liquid device.

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