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BAB 1 - USU Institutional Repository - Universitas Sumatera Utara

BAB 1 - USU Institutional Repository - Universitas Sumatera Utara

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4.60 Gambar Distribusi Tegangan Normal Arah Z<br />

Impak Samping pada Busa (Foam)..............................................87<br />

4.61 Grafik Nilai Pembebanan Distribusi Tegangan<br />

pada Busa (Foam) Impak Samping.............................................87<br />

4.62 Gambar Distribusi Tegangan Normal Arah Y<br />

Impak Belakang pada Busa (foam).............................................88<br />

4.63 Gambar Distribusi Tegangan Normal Arah Z<br />

Impak Belakang pada Busa (foam).............................................89<br />

4.64 Grafik Nilai Pembebanan Distribusi Tegangan<br />

pada Busa (foam) Impak Belakang.............................................89<br />

4.65 Gambar Solid Helm Komposit dilapisi<br />

dengan Busa (foam)......................................................................91<br />

4.66 Gambar Distribusi Tegangan Normal X Helm<br />

Komposit dilapisi Busa (foam) Impak Atas.................................91<br />

4.67 Gambar Distribusi Tegangan Normal Y Helm<br />

Komposit dilapisi Busa (foam) Impak Atas.................................92<br />

4.68 Distribusi tegangan pada helm komposit<br />

dilapisi Busa (Foam) Cuntur diperbesar<br />

(Tampak tebal helm).....................................................................92<br />

4.69 Grafik Tegangan pada Helm Komposit dilapis Busa (foam)<br />

Impak Atas ( Lokasi Tegangan dititikA)....................................93<br />

4.70 Grafik Tegangan pada Helm Komposit dilapisi<br />

Busa (foam) Impak Atas ( Lokasi Tegangan dititik B)................93<br />

18<br />

<strong>Universitas</strong> <strong>Sumatera</strong> <strong>Utara</strong>

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