Thermoviscoelastic behavior of a short fiber-reinforced polymer hollow cylinder accounting for porosity

2016 ◽  
Vol 51 (19) ◽  
pp. 2779-2791 ◽  
Author(s):  
Hong-Liang Dai ◽  
Ting Dai ◽  
Wei-Feng Luo
Keyword(s):  
Hollow Cylinder ◽  
Integral Transform ◽  
Mechanical Load ◽  
Coefficient Of Thermal Expansion ◽  
Short Fiber ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Cylindrical Structures ◽  
Reinforced Polymer ◽  
Hollow Cylinders

In this paper, thermoviscoelastic behavior of a hollow cylinder made of short fiber-reinforced polymer considering porosity is investigated by an analytical method. Material properties, except the Poisson’s ratio and coefficient of thermal expansion, are assumed to be changed with the volume of constituents and porosity. Utilizing the finite Hankle integral transform and Laplace transform, analytical solutions for thermoviscoelastic behaviors of short fiber-reinforced polymer hollow cylinders under thermal and mechanical loads are obtained. Numerical examples show the influences of thermal load, mechanical load, and material porosity on the thermoviscoelastic behaviors of short fiber-reinforced polymer cylindrical structures.

Fabrication of Short Fiber Reinforced Polymer Composites

2019 ◽  
pp. 21-38
Author(s):  
Ujendra K. Komal ◽  
Manish K. Lila ◽  
Saurabh Chaitanya ◽  
Inderdeep Singh
Keyword(s):  
Polymer Composites ◽  
Short Fiber ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites

scholarly journals Experimental and Numerical Research on Open-Hole Strength and Damage Mechanism of Regularly Arrayed Short Fiber Reinforced Polymer Composite

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1622
Author(s):  
Junfeng Hu ◽  
Xutong Zhang ◽  
Zhou Chen ◽  
Wenkang Guo ◽  
Hang Li ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Damage Mechanism ◽  
Short Fiber ◽  
Numerical Control ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites ◽  
Open Hole ◽  
Continuous Carbon Fiber

Laminates with unidirectionally arrayed chopped strands (UACS) are one of the advanced short fiber reinforced polymer composites (SFRP) with significant application prospect, which greatly improves mechanical properties compared to the traditional SFRP, meanwhile ensuring excellent flowability. In practice, composite laminate with an open hole is one of the typical connective components, and it is necessary to clarify the allowable load and damage tolerance performance of notched structures. In the present study, UACS laminates were fabricated using the continuous carbon fiber reinforced polymer (CFRP) prepreg, on which regularly arrayed bi-angled slits were introduced by a commercial numerical control cutter. The tensile strength and strain distribution around the open hole of the notched UACS laminate were experimentally investigated, while the damage progression near the open hole of the notched UACS laminate was analyzed by the finite element method (FEM). The tensile strength of the notched UACS laminate was measured at 298 MPa, which is about 60% of the strength of the unnotched UACS laminate. The simulation results match well with the experimental results, although there is a little overestimate on strength, by about 5% and 7%, for unnotched and notched UACS laminates, respectively. The final critical failure mode for the notched UACS laminate is mainly dominated by the delamination instead of the fiber breakage in the unnotched UACS laminate.

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