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All Journal PERFORMA : Media Ilmiah Teknik Industri
Ilham Priyadithama
Program Studi Teknik Industri, Universitas Sebelas Maret, Surakarta
Engineering Industrial & Manufacturing Engineering

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Perancangan Motorcycle Lift dengan Mempertimbangkan Anthropometri Sebagai Alat Bantu Servis Sepeda Motor Rahmaniyah Dwi Astuti; Ilham Priyadithama; Gamma Wisnu Nurcahyo
Performa: Media Ilmiah Teknik Industri Vol 11, No 2 (2012): PERFORMA Vol. 11, No 2 September 2012
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (351.323 KB) | DOI: 10.20961/performa.11.2.13934

Abstract

This research is about the improvement of working posture by implementing a tool design. In the previous condition at the small workshop, Loh Jinawi, the working postures of the mechanic’s body when doing motorcycle service was not ergonomics and potentially caused pain or even injure in afterwards the day. By Nordic Body Map equipped questionnaire, the exact body parts which were affected by these working positions were known. On the other hand, there was a REBA method that used to measure how much risks that borne by the mechanic for these postures. Considering the condition of the workshop, there was no solution to fix the problem except using a specifically designed motorcycle lift. We transformed the problem information from our preliminary study into the design requirements of the tool. The tool was developed by anthropometry consideration. The final REBA evaluation showed that the tool could significantly reduce the risks.
Pengaruh Faktor Jenis Kertas, Kerapatan dan Persentase Perekat Terhadap Kekuatan Bending Komposit Panel Serap Bunyi Berbahan Dasar Limbah Kertas dan Serabut Kelapa R. Hari Setyanto; Ilham Priyadithama; Natalia Maharani
Performa: Media Ilmiah Teknik Industri Vol 10, No 2 (2011): PERFORMA Vol. 10 No 2, September 2011
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (163.295 KB) | DOI: 10.20961/performa.10.2.13860

Abstract

Penggunaan serat alam sangat potensial untuk menggantikan peran serat sintetis sebagai bahan komposit. Limbah kertas dan serabut kelapa merupakan serat alam yang keberadaannya melimpah di alam. Seraterat tersebut berpotensi untuk dijadikan komposit serap bunyi. Penelitian ini bertujuan untuk mengevaluasi pengaruh faktor jenis kertas, kerapatan dan persentase perekat terhadap kekuatan bending komposit panel serap bunyi. Penelitian ini menggunakan dua jenis kertas yaitu HVS dan koran, variasi kerapatan yang diuji yaitu 3:1, 4:1 dan 5:1, persentase perekat (PVAc) yaitu 2.5%, 5% dan 7.5%. Metode pengolahan data menggunakan teknik factorial completely randomized design experiment. Pengujian kekuatan bending menggunakan alat Universal Testing Machine dengan metode three point bending. Sedangkan pengujian kemampuan serap bunyi menggunakan metode tabung impedansi yang diujikan untuk spesimen dengan nilai bending tertinggi. Hasil eksperimen diperoleh bahwa masing-masing faktor tersebut berpengaruh terhadap kekuatan bending komposit panel serap bunyi, dengan nilai bending tertinggi sebesar 35,297 kgf/cm2 untuk komposit berbahan dasar kertas HVS dengan kerapatan 5:1 dan persentase perekat 7.5%. Nilai tersebut telah memenuhi standar minimal kekuatan bending papan serat menurut SNI 01-4449-2006. Spesimen tersebut memiliki koefisien serap bunyi sebesar 0.25 pada frekuensi acuan (500Hz) dan telah memenuhi standar minimal koefisien serap bunyi berdasar ISO 11654:1997.
Pemilihan Desain Prosthetic Jari Tangan Berdasarkan Mekanisme Sistem Penggerak Cross Bar dan Cross Cable terhadap Besar Gaya Tarik Dinamis Prosthetic Jari Tangan Susy Susmartini; Ilham Priyadithama; Lobes Herdiman
Performa: Media Ilmiah Teknik Industri Vol 10, No 2 (2011): PERFORMA Vol. 10 No 2, September 2011
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (131.504 KB) | DOI: 10.20961/performa.10.2.13872

Abstract

The absence of the hand causes the disruption of organ function, this problem later emerged prosthetic as a tool for replacement of missing body parts. Basically prosthetic hand has two functions: as cosmetics and as a functional tool. The most important functional aspects of prosthetic hands is the ease of operation that can be seen from the magnitude of tensile force required by prosthetic hand while doing the a movement. The mechanism of motion system that is widely used by prosthetic hand is a cross cable system and cross bar system. Cross cable systems using cable to connect components that act as links knuckles on hand, when the withdrawal event of the cable happened, the cable will be tightened and the movement of the fingers may occur. Cross bar systems uses bar (rigid link) as a puller, so when withdrawal event of the rope at the end of the lever happened, the bar that connects the components with a finger lever puller will push or pull bar so that the finger will open or close. Prosthetic design significantly influence the magnitude of the dynamic tensile strength that makes it necessary to make an experiments to compare the design of motion mechanisms of cross cable systems and cross bar system, and evaluate the influence on the magnitude of the dynamic tensile force at the time of movement, so it can represent the natural movement of normal human fingers.
Co-Authors Gamma Wisnu Nurcahyo Lobes Herdiman Natalia Maharani R. Hari Setyanto Rahmaniyah Dwi Astuti Susy Susmartini