Effect of Process Engineering on the Performance of Hybrid Fiber Composites

2020 ◽  
pp. 17-40 ◽  
Author(s):  
Madhu Puttegowda ◽  
Yashas Gowda Thyavihalli Girijappa ◽  
Sanjay Mavinkere Rangappa ◽  
Jyotishkumar Parameswaranpillai ◽  
Suchart Siengchin
Keyword(s):  
Fiber Composites ◽  
Process Engineering ◽  
Hybrid Fiber

Transverse Young's modulus of carbon/glass hybrid fiber composites

2019 ◽  
Vol 54 (7) ◽  
pp. 947-960
Author(s):  
Ganesh Venkatesan ◽  
Maximilian J Ripepi ◽  
Charles E Bakis
Keyword(s):  
Finite Element ◽  
Glass Fiber ◽  
Fiber Composites ◽  
Stress Model ◽  
Hybrid Fiber ◽  
Stress Strain ◽  
Element Analysis ◽  
Strain Behavior ◽  
The Matrix ◽  
Transverse Modulus

Hybrid fiber composites offer designers a means of tailoring the stress–strain behavior of lightweight materials used in high-performance structures. While the longitudinal stress–strain behavior of unidirectional hybrid fiber composites has been thoroughly evaluated experimentally and analytically, relatively little information is available on the transverse behavior. The objective of the current investigation is to present data on the transverse modulus of elasticity of unidirectional composites with five different ratios of carbon and glass fiber and to compare the data with predictive and fitted models. The transverse modulus increases monotonically with the proportion of glass fiber in the composite. Finite element analysis was used to evaluate different ways to model voids in the matrix and allowed the unknown transverse properties of the carbon fibers to be backed out using experimental data from the all-carbon composite. The finite element results show that the transverse modulus can be accurately modeled if voids are modeled explicitly in the matrix region and if modulus is calculated based on stress applied along the minimum interfiber distance path between adjacent fibers arranged in a rectangular array. The transverse modulus was under-predicted by the iso-stress model and was well predicted by a modified iso-stress model and a modified Halpin–Tsai model.

Pultrusion Technology Optimization for Hybrid Fiber Composites Based on DSC and Mechanical Property Testing

2011 ◽  
Vol 295-297 ◽  
pp. 383-387 ◽  
Author(s):  
Li Chen ◽  
Qi Lin Zhao ◽  
Ke Bin Jiang ◽  
Yong Ding
Keyword(s):  
Mechanical Properties ◽  
Fiber Composite ◽  
Processing Parameters ◽  
Fiber Composites ◽  
Processing Temperature ◽  
Processing Parameter ◽  
Heating Rates ◽  
Hybrid Fiber ◽  
Scanning Calorimetry ◽  
Parameter Ranges

In the interest of improving the curing effect and mechanical properties of pultruded carbon/glass bybrid fiber composites, the DSC (Differential Scanning Calorimetry) technology was introduced and the curing DSC curves for the hybrid fiber composites at 4 different heating rates was attained. Then the range of the processing temperature for the three-stage heating pultrusion was primarily determined with T-β method. Subsequently a kind of carbon/glass hybrid composite pole with a diameter of 11mm was selected as the research object, and was manufactured with varies of processing temperatures and speeds. The produced poles were mechanically tested to investigate the effect of processing parameters on the mechanical properties of the composite, so as to further more ascertain the processing parameter ranges fitting to this material formula. As the result shows: the pultrusion processing parameters for the hybrid fiber composite acquired in this study can satisfy the require of manufacturing; compared with the traditional method that attain processing parameters by experience, the method for attaining processing parameters suggested in this paper is more efficiency, more economical and more accurate.

scholarly journals Study of Mechanical Properties of Alkali Treated SZF/SF/VE Hybrid Composites under Wet Condition

2021 ◽  
pp. X
Author(s):  
Athijayamani AYYANAR ◽  
Ramkumar GP ◽  
Alavudeen AZIZ BATCHA ◽  
Thiruchitrambalam MANI
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Hybrid Composite ◽  
Vinyl Ester ◽  
Hybrid Composites ◽  
Fiber Composites ◽  
Hybrid Fiber ◽  
Wet Condition ◽  
Water Absorption Test ◽  
Sisal Fibers

Mechanical properties of vinyl ester hybrid composites reinforced with alkali treated Smilax zeylanica and sisal fibers were studied at wet condition in the present communication. Hybrid composites were fabricated by using a simple hand lay up technique based on three different fiber loading of 25, 35, and 45 wt.% with alkali treated fibers. Hybrid composite specimens were then subjected to the water absorption test to observe the behaviours of composite specimens at wet condition under mechanical loads such as tensile, flexural and impact. Water absorption test was carried out in two ways at distilled water environment at room temperature. First way test was conducted for 10 days to observe the percentage of water particle absorption of hybrid composites. Second way test was performed for 5 days to determine the mechanical properties of hybrid composites at wet condition to observe its durability when they are used in outdoor applications. Mechanical properties of hybrid composite specimens at wet conditions were compared with the dry composite specimens. Experimental results showed that the percentage of the water particle absorption in the alkali treated hybrid fiber composites is lower as compared to the untreated hybrid fiber composites. Mechanical properties of alkali treated hybrid fiber composites at wet condition are slightly reduced as compared to the treated hybrid fiber composite at dry condition. As a result, it is observed that the resistance for the penetration of the water particles is higher for the alkali treated smilax zeylanica and sisal fibers reinforced vinyl ester hybrid composites. The fracture surfaces of the hybrid composite specimens were examined by scanning electron microscope to understand the effects of water absorption on the mechanical properties.

Sign in / Sign up

Export Citation Format

Share Document