Mechanical Properties Characterization of Okra Fiber Based Green Composites &amp; Hybrid Laminates

Potluri, Rakesh; Paul, Koushik; Kalam, Sd. Abdul; Prasanthi, P. Phani

doi:10.1016/j.matpr.2017.02.170

Cited by 36 publications

(17 citation statements)

References 16 publications

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“…The flexural strength of the laminate improved with fiber concentration up to 40 wt.%. Potluri et al described epoxy composites that were reinforced with okra/kenaf and okra/banana fibers [45]. Introducing banana fiber into okra fiber/epoxy composites improved their tensile properties.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Epoxy Composites with Both Powder and Fiber Filler: A Review of Mechanical and Thermomechanical Properties

Matykiewicz

2020

Materials

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Fiber-reinforced epoxy composites are used in various branches of industry because of their favorable strength and thermal properties, resistance to chemical and atmospheric conditions, as well as low specific gravity. This review discusses the mechanical and thermomechanical properties of hybrid epoxy composites that were reinforced with glass, carbon, and basalt fabric modified with powder filler. The modification of the epoxy matrix mainly leads to an improvement in its adhesion to the layers of reinforcing fibers in the form of laminate fabrics. Some commonly used epoxy matrix modifiers in powder form include carbon nanotubes, graphene, nanoclay, silica, and natural fillers. Fiber fabric reinforcement can be unidirectional, multidirectional, biaxial, or have plain, twill, and satin weave, etc. Commonly used methods of laminating epoxy composites are hand lay-up process, resin transfer molding, vacuum-assisted resin transfer molding, and hot or cold pressing. The following review is a valuable source of information on multiscale epoxy composites due to the multitude of technological and material solutions.

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Section: Introductionmentioning

confidence: 99%

Hybrid Epoxy Composites with Both Powder and Fiber Filler: A Review of Mechanical and Thermomechanical Properties

Matykiewicz

2020

Materials

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“…Dari hasil pengujian tarik membuktikanm bahwa dengan memvariasikan temperatur maka mempengaruhi kekuatan tarik yang di hasilkan [10].…”

Section: Pengujian Tarikunclassified

Pengaruh Temperatur Terhadap Sifat Mekanik Pada Pembuatan Papan Komposit Berbasis Sekam Padi Dan Matriks Hdpe

Kardiman

Fuadi²,

C.S³

et al. 2019

DJITM

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Penelitian ini bertujuan untuk membuat papan komposit yang berbahan dasar limbah sekam padi sebagai penguat dan HDPE Recycle sebagai pengikat dengan menggunakan metode penempaan (Hot Press). Pembuatan papan komposit dilakukan dengan memvariasikan temperatur cetakan 160oC, 180 oC, 200 oC, dan 220 oC pada fraksi volume perbandingan antara sekam padi dan HDPE Recycle sebesar 20% dan 80%. Sebelumnya sekam padi dilakukan proses alkalisasi terlebih dahulu untuk menghilangkan lapisan lignin (lilin) yang terkandung pada serat alam, dimana sekam direndam dalam larutan NaOH sebanyak 5% selama 2 jam. Spesimen yang di uji pada penelitian ini adalah uji makro dan uji tarik uji, pengujian tarik dibuat mengacu pada standar ASTM D 638-02, pengujian tarik yang dimaksud yaitu untuk menggetahui sifat mekanik dan pengujian foto makro yakni untuk mengetahui sifat fisik papan komposi. Dari hasil Pencetakan Papapan Komposit setiap variasi suhu berdimensi 398 mm x 178 mm dengan ketebalan ± 10 mm. Suhu 160℃ dan suhu 180℃ terlihat jelas HDPE tidak melapisi secara menyeluruh terutama pada bagian pinggir cetakan namun pada penyatuan sekam padi-HDPE bagian tengahnya terlihat lebih menyatu dengan optimal. Sedangkan pada suhu 200℃ dan 220℃ terlihat sangat jelas bahwa HDPE sangat mendominasi cetakan dibandingkan sekam padi, sehingga HDPE melapisi sekam padi dengan optimal untuk ketebalan dari papan komposit menjadi lebih pipih dibandingkan dengan suhu 160℃ dan suhu 180℃. Hasil Foto makro menjelaskan pada suhu 160℃ dan suhu 180℃ sekam padi terlihat jelas mengisi di bagian tengah spesimen, sedangkan pada suhu 200℃ dan suhu 220℃ sekam terlihat sekam sudah mengalami penyusutan dan tampak hangus sehingga HDPE lebih mendominasi papan komposit. Hasil uji Tarik memiliki beban maksimal dan kekuatan tarik pada pembuatan papan komposit pada suhu 160 yaitu 678,02 N dan 9,1406 Mpa serta memiliki perpanjangan akhir dan regangan akhir yaitu 0,515 mm dan 1,03 %. Sehingga kesimpulannya semakin besar nilai beban maksim

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“…Composite materials usually exhibit higher mechanical and thermal properties when compared with the conventional materials such as metals, polymers, etc. (Potluri and Koteswara, 2017; Potluri, James Paul, Abdul Kalam and Prasanthi, 2017; Potluri, Kumar, Naga Raju and Ravi Prakash Babu, 2017; Potluri and Ketha, 2015; Potluri, 2015; Daniel and Ishai, 2006; Kaw, 2006; Jones, 1999; Barbero, 2014). The composite materials are mainly made up of two important phases known as the reinforcement and the matrix phase.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties evaluation of T800 carbon fiber reinforced hybrid composite embedded with silicon carbide microparticles

Potluri¹

2018

MMMS

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Purpose The purpose of this paper is to study the effect of the addition of silicon carbide (SiC) microparticles and their contributions regarding the tensile and shear properties of the T800 fiber reinforced polymer composite at various fiber volume fractions. The tensile and shear properties of the hybrid composites where continuous T800 fibers are used as reinforcements in an epoxy matrix embedded with SiC microparticles have been studied. Design/methodology/approach The results were obtained by implementing a micromechanics approach assuming a uniform distribution of reinforcements and considering one unit cell from the whole array. Using the two-step homogenization process, the properties of the materials were determined by using the finite element analysis (FEA). The predicted elastic properties from FEA were compared with the analytical results. The analytical models were implemented in the MATLAB Software. The FEA was performed in ANSYS APDL. Findings The mechanical properties of the hybrid composite had increased when compared with the properties of the conventional FRP. The results suggest that SiC particles are a good reinforcement for enhancing the transverse and shear properties of the considered fiber reinforced epoxy composite. The microparticle embedment has significant effect on the transverse tensile properties as well as in-plane and out-of-plane shear properties. Research limitations/implications This is significant because improving the properties of the composite materials using different methods is of high interest in the materials community. Using this study people can work on the process of including different type of microparticles in to their composite designs and improve their performance characteristics. The major influence of the particles can be seen only at lower volume fractions of the fiber in the composite. Only FEA and analytical methods were used for the study. Practical implications Material property improvements lead to more advanced designs for aerospace and defense structures, which allow for high performance under unpredictable conditions. Originality/value This type of study proves that the embedment of different microparticles is a method that can be used for improving the properties of the composite materials. The improvement of the transverse and shear properties will be useful especially in the design of shell structures in the different engineering applications.

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Mechanical Properties Characterization of Okra Fiber Based Green Composites & Hybrid Laminates

Cited by 36 publications

References 16 publications

Hybrid Epoxy Composites with Both Powder and Fiber Filler: A Review of Mechanical and Thermomechanical Properties

Hybrid Epoxy Composites with Both Powder and Fiber Filler: A Review of Mechanical and Thermomechanical Properties

Pengaruh Temperatur Terhadap Sifat Mekanik Pada Pembuatan Papan Komposit Berbasis Sekam Padi Dan Matriks Hdpe

Mechanical properties evaluation of T800 carbon fiber reinforced hybrid composite embedded with silicon carbide microparticles

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