PENGARUH VARIASI KETEBALAN CORETERHADAP
KARAKTERISTIKBENDINGKOMPOSIT SANDWICH SERAT CANTULA
DENGAN CORE HONEYCOMB KARDUS TIPE KOMBINASIC-FLUTE
DAN A-FLUTE
Wirawan Yogi Panuti.THE EFFECT OF THE VARIATION OF CORE
THICKNESS ON BENDING CHARACTERISTIC OF CANTULAS’ FIBER
SANDWICH COMPOSITE WITH THE TYPE COMBINATION C-FLUTE
AND A-FLUTE OF CARDBOARD HONEYCOMB CORE.Thesis: Faculty of
Teacher Training and Education Science Sebelas Maret University Surakarta,
October, 2013.
The purpose of this research is to investigate the effect of the variation of
core thickness on strength bending characteristic of cantulas’ fiber sandwich
composite with the type combination C-Flute and A-Flute of cardboard
honeycomb core.
Cantulas’ fiber is used to make the skin by applied it in the same way and
get alkali ( 2% NaOH ) in 6 hours. Hand lay up method is used in the production
process by using fraction 40:60 resin BQTN 157 with the thickness of skin 4mm.
in making the combination between C-Flute and A-Flute core honeycomb used
Horisontal Gelombang Dua arah ( HGD ) method with the variation of the core
thickness 10 mm, 20mm, and 40 mm. then , adhesive epoxy versamid 140 is used
to glue between skin and core. the mechanical test is conducted using bending
test according to ASTM C 393 standart. the failure observation of the bending
test is done by makro photo.
The result shows that the variation of core thickness influence the strength
of bending sandwich cantulas’ fiber sandwich composite with the type
combination C-Flute and A-Flute of cardboard honeycomb core . the maximum
weight of the bending sandwich composite is in the 10mm of the core thickness
with the value 14,800MPa, on core shear stress and facing bending stress is in
the 10mm of the core thickness with the value 0,634 MPa and 14,271 MPa. the
pattern of failure is in the core failure, delaminasi, deformasi and in the skin is
causes of load tensile.
keywords : sandwich composite, cantulas’ fiber, core thickness, bending,
cardboard type C-Flute and A-Flute
Wirawan
Yogi
Panuti.PENGARUH
VARIASI
KETEBALAN
CORETERHADAP KARAKTERISTIK BENDINGKOMPOSIT SANDWICH
SERAT CANTULA DENGAN CORE HONEYCOMB KARDUS TIPE
KOMBINASIC-FLUTE DAN A-FLUTE. Skripsi, Fakultas Keguruan dan Ilmu
Pendidikan Universitas Sebelas Maret Surakarta.Oktober 2013.
Tujuan penelitian ini adalah untuk mengetahui pengaruh ketebalan core
terhadap kekuatan bending komposit sandwich serat cantula dengan core
honeycomb kardus tipe kombinasi C-Flute dan A-Flute.
Bahan pembuatan skin menggunakan serat cantula dengan model
penempatan searah dan mendapatkan perlakuan alkali ( 2% NaOH ) selama 6 jam
kemudian proses cetak dengan metode hand lay up menggunakan fraksi 40 : 60
resin BQTN 157 dengan ketebalan skin 4 mm. Proses pembuatan core honeycomb
kombinasi C-Flute dan A-Flute menggunakan arah susunan Horisontal
Gelombang Dua arah (HGD) dengan variasi tebal core 10 mm, 20 mm, 30 mm
dan 40 mm kemudian perekat antara skin dan core memakai Adhesive
epoxyversamid 140. Pengujian yang dilakukan adalah uji bending dengan
mengacu pada standart ASTM C 393.Kegagalan uji bending dianalisis dengan
menggunakan foto makro.
Hasil penelitian menunjukkan bahwa variasi ketebalan core berpengaruh
terhadap kekuatanbending komposit sandwich serat cantula dengan core
honeycomb kardus tipe kombinasi C-Flute dan A-Flute, dimana kekuatan
bendingtertinggi komposit sandwich berada pada ketebalan core 10 mm dengan
nilai 14,800MPa kemudian core shear stress dan facing bending stress tertinggi
tetap pada ketebalan core 10 mm dengan nilai 0,634 MPa dan 14,271 MPa. Pola
kegagalan yang terjadi adalah gagal core, delaminasi, deformasi dan kegagalan
skin akibat beban tarik.
Kata Kunci :komposit sandwich, serat cantula, ketebalan core, bendin, kardus
tipe C-Flute dan A-Flut
