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All Journal ROTOR: JURNAL ILMIAH TEKNIK MESIN
Rochardjo Heru, S.B.
Promotor/Staf Pengajar Jurusan Teknik Mesin dan Industri Fakultas Teknik Universitas Gadjah Mada
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Identifikasi Delaminasi Batang Komposit Rami dengan Metoda Respon Frekuensi Yamin Muh; Rochardjo Heru, S.B.; Suyitno Suyitno; Miasa I Made
ROTOR Vol 8 No 1 (2015)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Identification of delamination composite beam for four layers by using piezoelectric sensors.  Damage index is based delamination area (cross-sectional area ratio of delamination of the beam cross-sectional area). The purpose of research is to determine the location and cross-sectional area of delamination in composite materials beam four layers. Test bean   varied in five variations of fiber orientation;  [002]s , [4502]s , [9002]s , [±450]s dan [00/900]s,  five variations defect distance from the tip of the beam; 50, 100, 150, 200 and 250 mm, five variations of the damage index; 0:17, 0:22, 0:25, 0:28 and 0:33. Testing method used by the impulse frequency response method. Impulse testing in accordance with ASTM E 756. The results showed the natural frequency of the composite beam influenced by the orientation of the fiber direction, the distance from the tip of the beam defects and damage index.
Co-Authors I Made Miasa Suyitno Suyitno Yamin Muh