Pengaruh Komposisi Dan Lama Perendaman Serat Palem Saray Terhadap Sifat Komposit Dengan Matriks Poliester

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LAMPIRAN A

PERHITUNGAN DATA PENGUJIAN

1. Menghitung densitas sampel komposit SPS-P

Densitas (𝝆) =𝒎

2. Menghitung serapan air (porositas) sampel komposit SPS-P

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- Komposisi SPS 0%

mb = 0,96 gr

mk = 0,94 gr

SA =0,96−0,94

0,94 × 100% = 2,127 %

mb = 0,94 gr

mk = 0,91 gr

SA =0,94−0,91

0,91 × 100% = 3,296 %

mb = 0,91 gr

mk = 0,88 gr

SA =0,91−0,88

0,88 × 100% = 3,409 %

3. Menghitung kadar air sampel komposit SPS-P

Kadar air dapat dihitung dengan menggunakan persamaan berikut :

KA =

𝒎𝟏−𝒎𝟐

𝒎2

×

𝟏𝟎𝟎 %

Dimana :

m1 = Massa awal komposit (gram)

m2 = Massa akhir komposit (gram)

m1 = 2,35 gram

m2 = 2,32 gram

Kadar Air = 2,35 gram - 2,32 gram x 100 %

2,32 gram

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4. Menghitung kekuatan tarik sampel

𝝈 = 𝑭

- Komposisi SPS 1% lama perendaman Original

F = load_{x a = 10,068 10}-9_{kgf x 9,8 ms}-2_{= 98,67 10}-9_N

A = W x T = 11 mm x 2,30 mm = 25,3 mm2

σ = 98,67 10

−6_N

25,3 x 10−6_m2 = 3,900 MPa

- Komposisi SPS 1% lama perendaman 1 jam

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A = W x T = 13 mm x 2,20 mm = 28,6 mm2

σ= 312,026 10

−6_N

28,6 x 10−6_m2 = 10,910 MPa

F = load_{x a = 39,702 10}-9_{kgf x 9,8 ms}-2₌_389,089₁₀-9_N

A = W x T = 13 mm x 2,27 mm = 29,51 mm2

σ = 389,089 10

−6_N

29,51 x 10−6_m2 = 13,185 MPa

F = load x a = 26,861 10-9 kgf x 9,8 ms-2 = 263,243 10-9N

A = W x T = 10 mm x 2,11 mm = 21,1 mm2

σ= 263,243 10

−6_N

21,1 x 10−6_m2 = 12,476 MPa

F = load_{x a = 31,856 10}-9_{kgf x 9,8 ms}-2₌_312,198₁₀-9_N

A = W x T = 13 mm x 2,28 mm = 21,1 mm2

σ= 312,198 10

−6_N

21,1 x 10−6_m2 = 10,533 MPa

- Komposisi SPS 2% lama perendaman Original

F = load_{x a = 25,623 10}-9_{kgf x 9,8 ms}-2_{= 252,111 10}-9_N

A = W x T = 13 mm x 3,03 mm = 39,39 mm2

σ = 251,111 10

−6_N

39,39 x 10−6_m2 = 6,375 MPa

F = load_{x a = 27,811 10}-9_{kgf x 9,8 ms}-2_{= 272,553 10}-9_N

A = W x T = 10 mm x 2,67 mm = 26,7 mm2

σ= 272,553 10

−6_N

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F = load_{x a = 60,136 10}-9_{kgf x 9,8 ms}-2₌_589,341₁₀-9_N

A = W x T = 13 mm x 4,06 mm = 52,78 mm2

σ = 589,341 10

−6_N

52,78 x 10−6_m2 = 11,166 MPa

F = load_{x a = 38,584 10}-9_{kgf x 9,8 ms}-2₌_378,123₁₀-9_N

A = W x T = 14 mm x 2,60 mm = 36,4 mm2

σ= 378,123 10

−6_N

36,4 x 10−6 m2 = 10,388 MPa

5. Menghitung kekuatan impak sampel komposit SPS-P

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- Komposisi SPS 1% ; Lama Perendaman Original

- Komposisi SPS 1% ; Lama Perendaman 1 jam

E = 65835,53 x 10−6J

E = 107900,36 x 10−6J

E = 104302,12 x 10−6J

E = 79128,67 x 10−6J

- Komposisi SPS 2% ; Lama Perendaman Original

E = 100736,51 x 10−6J

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Is =

100736,51 x 10−6J

51,20x 10−6m2 = 1967,51 J. m −2

E = 164379,34 x 10−6J

E = 29440,08 x 10−6J

E = 144479,21 x 10−6J

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LAMPIRAN B

GAMBAR PERALATAN DAN BAHAN

Cetakan Komposit Serat Palem Saray

Resin Poliester Aquades 4 liter dan NaOH 5%

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Alumunium Foil Mirror Glaze Wax

Katalis MEPOXE Gelas Ukur

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Dobel Tip Kertas Pasir

Selasiban Skop

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