Failure Analysis of Silane-Treated Kevlar-Reinforced Nano-silica-Toughened Epoxy Composite in Laminar Shear Strength, Drop Load Impact and Drilling Process

2020 ◽  
Vol 20 (5) ◽  
pp. 1719-1725
Author(s):  
Pratibha Dharmavarapu ◽  
M. B. S. Sreekara Reddy
Keyword(s):  
Shear Strength ◽  
Failure Analysis ◽  
Epoxy Composite ◽  
Drilling Process ◽  
Nano Silica ◽  
Toughened Epoxy ◽  
Laminar Shear ◽  
Load Impact

scholarly journals Evaluation of Interfacial Fracture Toughness and Interfacial Shear Strength of Typha Spp. Fiber/Polymer Composite by Double Shear Test Method

Materials ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2225 ◽  
Author(s):  
Ikramullah ◽  
Samsul Rizal ◽  
Yoshikazu Nakai ◽  
Daiki Shiozawa ◽  
H.P.S. Abdul Khalil ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Shear Strength ◽  
Interfacial Shear Strength ◽  
Epoxy Composite ◽  
Interfacial Fracture ◽  
Interfacial Shear ◽  
Composite Model ◽  
Interfacial Fracture Toughness ◽  
Double Shear ◽  
The Matrix

The aim of this paper is to evaluate the Mode II interfacial fracture toughness and interfacial shear strength of Typha spp. fiber/PLLA and Typha spp. fiber/epoxy composite by using a double shear stress method with 3 fibers model composite. The surface condition of the fiber and crack propagation at the interface between the fiber and the matrix are observed by scanning electron microscope (SEM). Alkali treatment on Typha spp. fiber can make the fiber surface coarser, thus increasing the value of interfacial fracture toughness and interfacial shear strength. Typha spp. fiber/epoxy has a higher interfacial fracture value than that of Typha spp. fiber/PLLA. Interfacial fracture toughness on Typha spp. fiber/PLLA and Typha spp. fiber/epoxy composite model specimens were influenced by the matrix length, fiber spacing, fiber diameter and bonding area. Furthermore, the interfacial fracture toughness and the interfacial fracture shear stress of the composite model increased with the increasing duration of the surface treatment.

scholarly journals Flexural and Inter- Laminar Shear Strength of Glass/Carbon Fabric Reinforced Composite

2021 ◽  
Vol 1057 (1) ◽  
pp. 012016
Author(s):  
P Madhavi ◽  
K Chandra Shekar ◽  
K Poojith ◽  
P Sai Kumar ◽  
P Usman Khan ◽  
...  
Keyword(s):  
Shear Strength ◽  
Carbon Fabric ◽  
Reinforced Composite ◽  
Glass Carbon ◽  
Laminar Shear

scholarly journals Mechanical and Tribological Behaviour of Hybrid Multi Fibre Reinforced Nylon 6-6 Nanocomposites

2021 ◽  
Vol 58 (3) ◽  
pp. 137-147
Author(s):  
Pradeep Kumar Seethakaran ◽  
Gopalakrishnan Prabhakaran ◽  
Paulraj Jawahar
Keyword(s):  
Wear Resistance ◽  
Fatigue Life ◽  
Glass Fibre ◽  
Research Work ◽  
Nylon 6 ◽  
Wire Mesh ◽  
Thermoplastic Composites ◽  
Nano Silica ◽  
Tribological Behaviour ◽  
Load Impact

The investigation on the effect of adding silane modified chopped E-glass fibre and Aluminium metal wire-mesh into nano silica toughened nylon 6-6 thermoplastic composites on mechanical, drop load impact, fatigue and tribological behaviour is studied in this paper. The primary aim of this research work is to develop a hybrid Nylon 6-6 nanocomposites having high stiffness, toughness and wear resistance. The chopped glass fibre and Al wire-mesh was surface treated with the help of 3-Aminopropyletrimethoxylane (silane) and acid etching. The tensile results revealed that additions of glass fibre and Al mesh into nano - silica toughened nylon 6-6 composite gives improved tensile and flexural strength. Similarly, the Izod impact strength of Al-mesh reinforced nano silica (1vol.%) toughened nylon 6-6 gives superior energy absorption up to 6 Joules/cm. The drop load impact penetration of composite N3 (59% - Nylon 66, 20% - E-glass fibre, 20% - Al wire mesh and 1 % - nano silica) shows very limited penetration than other composites. Highest fatigue life of 16391 cycles was observed for the composite designated N3, which contains 1 vol.% of nano silica, whereas the composite containing 2 vol.% of nano silica gives very lower specific wear rate and Co-efficient of friction. The developed composite which has better modulus, stiffness, wear resistance and fatigue life could be possibly used in automobile power transmission gears, domestic equipment and farm related machineries.

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