Mechanical behavior of glass fiber‐reinforced Nylon‐6 syntactic foams and its Young's modulus numerical study

2021 ◽  
Vol 138 (27) ◽  
pp. 50648 ◽  
Author(s):  
Roberto Yáñez‐Macías ◽  
Jorge E. Rivera‐Salinas ◽  
Silvia Solís‐Rosales ◽  
Daniel Orduña‐Altamirano ◽  
David Ruíz‐Mendoza ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Glass Fiber ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Numerical Study ◽  
Nylon 6 ◽  
Syntactic Foams ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced

Characterization of the Compressive Behavior of Glass Fiber Reinforced Polyurethane Foam at Different Strain Rates

2010 ◽  
Vol 132 (2) ◽  
Author(s):  
Huiyang Luo ◽  
Yanli Zhang ◽  
Bo Wang ◽  
Hongbing Lu
Keyword(s):  
Glass Fiber ◽  
Young’S Modulus ◽  
Polyurethane Foam ◽  
Master Curve ◽  
Young's Modulus ◽  
Superposition Principle ◽  
Strength Increase ◽  
Strain Rates ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced

A glass fiber reinforced polyurethane foam (R-PUF), used for thermal insulation of liquefied natural gas tanks, was characterized to determine its compressive strength, modulus, and relaxation behavior. Compressive tests were conducted at different strain rates, ranging from 10−3 s−1 to 10 s−1 using a servohydraulic material testing system, and from 40 s−1 to 103 s−1 using a long split Hopkinson pressure bar (SHPB) designed for materials with low mechanical impedance such as R-PUF. Results indicate that in general both Young’s modulus and collapse strength increase with the strain rate at both room and cryogenic (−170°C) temperatures. The R-PUF shows a linearly viscoelastic behavior prior to collapse. Based on time-temperature superposition principle, relaxation curves at several temperatures were shifted horizontally to determine Young’s relaxation master curve. The results show that Young’s relaxation modulus decreases with time. The relaxation master curve obtained can be used to convert to Young’s modulus at strain rates up to 103 s−1 following linearly viscoelastic analysis after the specimen size effect has been considered.

Numerical Investigations of Young’s Modulus for Composites with Inclined Glass Fiber for Wind Energy Application

2011 ◽  
Vol 216 ◽  
pp. 393-396
Author(s):  
Huai Wen Wang ◽  
Le Le Gui ◽  
Hong Wei Zhou
Keyword(s):  
Wind Energy ◽  
Glass Fiber ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Design Guideline ◽  
Glass Fiber Reinforced ◽  
Inclined Angle

Young’s Modulus of glass fiber reinforced composites for wind energy applications are studied using numerical method. The effect of volume content of glass fiber on the Young’s modulus of composites is investigated. Results indicate the relation between them is nearly linear. In order to explore the effect of inclined angle of fiber on the Young’s modulus of composites, different finite element models with inclined glass fiber are developed via the ABAQUS Scripting Interface. Results indicate that Young’s modulus of the composites strongly depends on the inclined angle of fiber. A U-shaped dependency of the Young’s modulus of composites on the inclined angle of fiber is found, which agree with the experimental results. The results of the investigation are expected to provide some design guideline for the microstructural optimization of the glass fiber reinforced composites.

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