Investigation on the Influence of the Constituent Elements in PMC Laminates on Inter Laminar Shear Strength (ILSS) and Impact Strength

The development of composite materials is increasingly widespread, which require superior mechanical properties. From many studies, it is found that the mechanical properties of composite materials are influenced by various factors, including the reinforcement content, both in the form of fibers and particle powder. However, those studies have not investigated the effect of the hardener weight fraction on the mechanical properties of resin composite materials. Even though its function as a hardener is likely to affect its mechanical properties, it might obtain the optimum composition of the reinforcing content and hardener fraction to get the specific mechanical properties. This study examines the effect of hardener weight fraction combined with fiber powder content on mechanical properties of EPR-174 epoxy resin matrix composite and determines the optimum of Them. The research was conducted by testing a sample of composite matrix resin material reinforced with coconut fiber powder. The Powder content was made in 3 levels, i.e.: 6%, 8%, and 10%. While the hardener fraction of resin was made in 3 levels, i.e.: 0.4, 0.5, and 0.6. The test results showed that pure resin had the lowest impact strength of 1.37 kJ/m2. The specimen with a fiber powder content of 6% has the highest impact strength i.e.: 4.92 kJ/m2. The hardener fraction of 0.5 has the highest impact strength i.e.: 4.55 kJ/m2. The fiber powder content of 8% produced the highest shear strength i.e.: 1.00 MPa. Meanwhile, the hardener fraction of 0.6 has the highest shear strength i.e.: 2.03 MPa.

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

Journal of Failure Analysis and Prevention ◽

10.1007/s11668-020-00979-7 ◽

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

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Influence of interply arrangement on inter-laminar shear strength of carbon-Kevlar/epoxy hybrid composites

10.1063/1.5085616 ◽

2019 ◽

Cited By ~ 2

Author(s):

F. D. Guled ◽

H. C. Chittappa

Keyword(s):

Shear Strength ◽

Hybrid Composites ◽

Laminar Shear

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Effect of loading rate on inter laminar shear strength (ILSS) of highly doped MWCNTs carbon/epoxy laminates

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/455/1/012006 ◽

2018 ◽

Vol 455 ◽

pp. 012006 ◽

Cited By ~ 1

Author(s):

Chandan Kumar ◽

K.K. Singh ◽

Prashant Rawat ◽

Akash Deep ◽

Rohit Pratyush Behera

Keyword(s):

Shear Strength ◽

Loading Rate ◽

Laminar Shear

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Shear Resistance Contribution of Constituent Elements Consisting RCS Joint

Advances in Civil Engineering ◽

10.1155/2021/3958247 ◽

2021 ◽

Vol 2021 ◽

pp. 1-14

Author(s):

Eun-Jin Lee ◽

Jeong-Ho Moon ◽

Moon-Sung Lee

Keyword(s):

Shear Strength ◽

Type Specimen ◽

Shear Resistance ◽

Cover Plate ◽

Contribution Ratio ◽

Transverse Beam ◽

Bearing Plate ◽

Column Joint ◽

Constituent Elements ◽

Total Shear

In this study, constituent elements affecting the shear strength of RCS joints were investigated through experiment and analysis study. A series of five interior RCS beam-column joint specimens, which were classified as JH-type and CP-type, was tested to investigate the contribution of each shear resisting element such as JH (Joint Hoop), CP (Cover Plate), FBP (Face Bearing Plate), E-FBP (Extended Face Bearing Plate), TB (Transverse Beam), and BP (Band Plate). Comparison between experiment and analysis results showed that the stiffness and strength of the RCS joint were reasonably assessed from the analysis. As a result of the analysis, it was found that TB, E-FBP, and CP increased the shear strength by about 15%, 14%, and 26%, respectively. For the JH-type specimen, 70% of the shear strength of the RCS joint is supported by the inner element and 30% of the shear strength is supported by the outer element. Shear strength contribution ratio of the outer element of CP-type specimen is larger than that of the JH-type specimen. For all specimens except for SNI-1, around 10% of total shear strength is supported by FBP. The shear strength equation of the RCS joint proposed by ASCE underestimates the contribution of the outer element, while that of M-Kanno tends to overestimate it.

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