Susy Susmartini
Program Studi Teknik Industri, Universitas Sebelas Maret, Surakarta

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PERANCANGAN ULANG ALAT MESIN PEMBUAT ES PUTER BERDASARKAN ASPEK ERGONOMI Adhi Dwi Arta; Rahmaniyah Dwi Astuti; Susy Susmartini
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 (307.827 KB) | DOI: 10.20961/performa.11.2.13940

Abstract

Facts in the real condition is show that the little entrepreneur using the conventional devices in small village for make “es puter”, causes the worker have many complaint while making “es puter”. Appear this complaint can make musculoskeletal injury for the worker. As a result of this activity there are many complaints with the most dominant of complaints occur in the neck, arm, wrist, knee, and ankle.That injuries happen while revolve the ice tube, the process experience friction with ice in the outside of the tube. In this research have done identify desire and expectation of worker had done with interview, and the result is translated become necessity and become a concept of design device. The second phase is determinate device dimension base on anthropometric dimension. The last phase is making machining “Es Puter”. The result is “es Puter” machine with revolve mechanism using motor with 1400 rpm, is reduction became 70 rpm, and the production cost Rp 3.557.400,00. This device giving repair in processing position in making “Es Puter” then can decrease musculoskeletal injury, as well as ave safety, comfortable, and can shorten production time became 1 hour.
Pengembangan Sistem Pendukung Keputusan untuk Pengendalian Persediaan Bahan Baku ( Studi Kasus Pada PT. Ready Mix Concrete ) Fauzan Azmi; Susy Susmartini; Yuniaristanto -
Performa: Media Ilmiah Teknik Industri Vol 2, No 2 (2003): PERFORMA Vol. 2, No. 2 September 2003
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (271.216 KB) | DOI: 10.20961/performa.2.2.11120

Abstract

PT. RMC, a company based on make to order which producing ready mixed concrete has not applied acertain ordering method yet. Giving letter of delivery and job-mix to logistics department close to production execution time make logistics department cannot determine requirement of material. Beside that, logistics department works based on work instrument and manual recording so that there are still found many problems which effect on pile up or shortage.It needs a method which can provide the decision about material ordering time and quantity so that result minimum total inventory cost. The method is developed as Decision Support System (DSS). It uses Material Requirement Planning concept (MRP) with daily phased. Determining economic ordering lot size uses static Economic Order Quantity (EOQ) with safety stock (SS). DSS determine Q order if inventory decrease until reach Reorder Point (ROP). With DSS, input and edit data become easier thanbefore.In validation, the proposed method is compared with the current method that result the total inventory cost of proposed method lower than current method. The cost reduction is 10,31 % or Rp. 23.351.790,97439 per month.
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.