ANALISA KEKUATAN IMPACT DAN MODEL PATAHAN KOMPOSIT POLYESTER-SERAT ECENG GONDOK DI TINJAU DARI TIPE PENYUSUNAN SERAT

Dodik Aprilia, I Nyoman Pasek Nugraha, Kadek Rihendra Dantes

Abstract


Penelitian ini dilakukan untuk mengetahui orientasi serat yang terbaik yang dapat digunakan sebagai komposit matrik polyester berpenguat serat eceng gondok. Sifat mekanik yang dimaksud adalah kekuatan impact dan foto patahan mikro permukaan dan standar ukuran specimen sesuai ASTM D6110-4. Penelitian ini merupakan penelitian metode eksperimen dengan variabel terikat kekuatan impak, dan variabel bebas yaitu orientasi serat continuous, discontinuous, dan hybride.selanjutnya akan dianalisis menggunakan anava Dari penelitian yang dilakukan diketahui bahwa nilai impact tertinggi ada pada orientasi serat hybride yaitu 2.441,25 J/m3 , sedangkan kekuatan impact terendah pada orientasi serat continous yaitu 1.085,002 J/m3. Berdasarkan dari uji Scheffe yang sudah didapat, bahwa terdapat perbedaan kekuatan impak komposit polyester berpenguat serat alam eceng gondok antara orientasi serat continuous dengan discontinuous dengan nilai 12,86 orientasi serat continuous dengan hybride dengan nilai 24,03 dan orientasi serat discontinuous dengan hybride dengan nilai 11,02 .
Kata Kunci : Kata kunci :orientasi serat, impak, model patahan.komposit,polyester

This research was conducted to find out the best fiber orientation that can be used as a fiber-reinforced polyester composite of water hyacinth. The mechanical properties in question are the impact strength and photo surface micro-fracture and standard sized specimens according to ASTM D6110-04. This research is a research of experimental method with dependent variable of impact strength, and independent variable that is continuous fiber orientation, discontinuous, and hybride. Then will be analyzed using anava From the research, it is known that the highest impact is on the orientation of the fiber hybride is 2,441,25 J / m3, while the lowest impact strength on continuous fiber orientation is 1,085,002 J / m3.Based on the further test Scheffe has been obtained, that there is a difference of impact strength of polyester composite fiber-made natural hyacinth between continuous fiber orientation with discontinuous with value 12,86 continuous fiber orientation with hybride with value 24,03 and orientation fiber discontinuous with hybride with value 11,0.
keyword : Keywords: fiber orientation, impact, fracture model.composite, polyester

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DOI: http://dx.doi.org/10.23887/jjtm.v6i1.11412

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