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KOMPOSIT ANDALAN BAHAN MASA DEPAN Karyono, Slamet
Jurnal Cakrawala Pendidikan CAKRAWALA PENDIDIKAN, EDISI 2,1991,TH.XI
Publisher : LPPMP Universitas Negeri Yogyakarta

Proses. pencarian bahan yang sesuai dehgan.~untutan·peke/jaan.suclah dilakukan. oleh manusia 'sejak z~rhari batu?.·:S~tf.ap dijumpai kelemahan~kelerr.ahan'padastlatu bahan,'. , manllsia akan mencari alternatif-alternatif baru 'ya'ng.lebih",memenuhi tuntutan pekerjaan. Dengandemikian, dapat dib,a,.,.,yan.g~~n bahwa proses pencari?n bahan ini tidak 'ak~I'LP~rrahs~lesai sejalan dengan perkembangan 'peradahan manusia. terutama di bidang teknologi. -,'.l Bahan- komposit untuk mas?. :sekarang dan mendatang'~me,nj?diandalan manus:ia karepa sifat-sifa:tnya .yang.-dapat. " ditin,gkatkan sesuai dengan keinginan manusia sehingga akanmariipu menjawab tantangan kebutuhan bahari. Bahan kornposit'~ecara garis besar 'dapat digolongkan' ke dalain"'tiga'".. ·.::;,bagian, yaitu komposit fiber, .kompbsit, lapis; :aar(-i,kompdsjV~~':,···p~r,W<el. . . .. . _. ,: ."," . ,~ Penelitian-penelitian dan pengujian b~han komP9:si,t's~lal~ dilakl:lkan terutama ditekankari pada, sifat~~ifathy~yahg.:dapat berupa "kekuatan, kekakuan, ",Upis ,. 'dan:" 'ringan,,tahan terhadap suhu tinggi; dan sebagainya?. Perke:mbanga~ .)'~.~:s:paling pesat di .dalam penggunaan<p~qa:n';"~!lia~~l~h: ,,",_,p',aEa.teknol~gi kediz:-gant~raan' .k~ren.a. k.~.t,l~·(ggulap ~ifa~.~,~g~.t- ,"''-ny-a 'fan'g'dapat memenuhi seg'ala tuntuta'n 'pekerjailit"

PEMBUATAN MESIN PERAJANG KETELA SERBA GUNA UNTUK INDUSTRI PATILO DAN CERIPING KETELA SKALA KECIL Slamet Karyono; Wagiran Wagiran
INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Vol 9, No 1 (2005): Februari 2005
Publisher : LPPM UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ino.v9i1.5241

A group called SARILA in Kauman, Dadapayu, Semanu, Gunung kidul, had a problem of low production quality and capacity in their busi ness of making patilo and fried cassava chips because the work of cutting and scraping the basic material for their products, cassava, was done manu ally by using simple tools that caused the cassava to break when cut so that the resulting chips were also in broken conditions and the manual work caused the workers to quickly become exhausted. Therefore, the main objec tive of one voucher program was to enable the workers to do their work me chanically instead of manually.It had to be able to design and produce an easily-operated cassava processing machine with a frame strong enough to withstand vibrations and do two kinds of work, cutting and scraping cassava, easily, accurately, and simultaneously. An ergonomic table also had to be developed to ensure long-lasting use of the machine in the cassava processing. The machine at last successfully produced is 90 em in length, 60 em in width, and 90 em in height, designed high enough to enable the operator to do the work easily in a standing-up position. Stainless steel plate material is applied on all parts having direct contact with the cassava processing. The frame of the machine is made of 5-cm rectangular steel profiles to ensure its being strong enough to withstand operation. An electrical motor with a power of Y2 HP and pul ley-and-belt transmission aids the operation. Such transmission enables the cutting and scraping parts to operate simultaneously at different speeds. The position of the cutting tool can be adjusted for desired thickness. Except the frame, all parts of the machine are designed according to a knock-down sys tem for easy replacement of broken parts.The result of a performance test on the machine has shown that itcan be operated easily without the operator becoming quickly exhausted. Compared to what is produced in the old ways, the product looks better; it is smoother, and there is less cassava fibers. The product capacity of the ma chine is about 50 kg every 50 minutes from its cutting process and 50 kg every 75 minutes from its scraping process. During operation, there is no vibration on its frame. It shows that the construction design is strong enough to withstand the vibration of the motor rotation and cassava processing.Keywords: cassava, multipurpose machine, cutting and scraping

MIXER PENGADUK ADONAN UNTUK PENGRAJINSENI FIBERGLASS Slamet Karyono, Subiyono
INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Volume 15, Nomor 2, Agustus 2011
Publisher : LPPM UNY

tProduction tools used by the craftsmen at Prambanan Yogyakartafiberglass is still very simple. There are 2 main tools used by the craftsmenwhich led directly influence both the quantity and quality of handicraftproducts. For mixing dough fiberglass, the craftsmen using improvised toolsand for finishing the painting, the craftsmen using hand brushes. From boththese tools, fiberglass dough mixer was chosen to be developed.The mixer uses elliptic vertical stirrer model with a larger radius atthe bottom. The purpose of this design is for rotating the flow of fluidinsideand sideway of the stirrer rotation and outside flow at the other area.The form of this mixer is a solution of the goal to produce a homogeneousmixture of fiberglass. Swivel stand is the stand of plastic bucket that will befilled with fiberglass dough. This bucket rotates automatically when themixing takes place. Thus an accelerated stirring and mixing a homogeneousmixture.Power uses¼ HPelectric motor with 1425 rpm. Motor speed is thenreduced by half through the pulley transmission. Mixer machineperformance is then compared between the old machines with new machinesassociated with the design of mixer and a different holder. Old mixer usinga single L shape stirrer rod, a new mixer using a mixer with a double ellipticshape intersect. Old mixer using the fix stand, while the new mixer using aswivel stand. Both productiveness of the mixer then compared in terms ofquantity and quality of mixing. Tests on the preparation of the second mixermachine does not show a significant difference, on average it takes 5minutes before stirring preparation done. Tests at the time of stirringshowed that the new mixer can mix faster than the old mixer. New mixerstirring just 5 minutes to produce a homogeneous mixture, while the oldmixer takes 10 minutes. Tests showed that the volume of new mixer capableof stirring the batter with a capacity of 4 times greater at around 20 liters,the results of this dough is much better visually and homogeneous. Theimplication of this finding is new mixer can improve the quantity andquality of fiberglass dough, and can be used as a substitute for the old mixerused byfiberglass industry targets.

MODIFIKASI MESIN BOBOK KAYU UNTUK PENINGKATAN PRODUKTIVITAS MEBEL INDUSTRI KECIL Slamet Karyono; Edy Purnomo
INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Vol 7, No 1 (2004): Edisi Juni 2004
Publisher : LPPM UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ino.v7i1.5217

The problems of the furniture industry target are about the effectiveness of the use of wood chisel and bit machine because it hasn't fix machine bench for wood laying and the machine position that not ergonomic. These problems make. setting.. time longer, wood position unstable because of unfix bench, the vice easy to broken because of instability of wood, imprecision of hole position, and the exhausted operator because of the machine position.The main goal of this voucher program is to modify wood chisel and bit machine for preparing the connection between pin and its hole at U.O ..TANGGUH, small scale furniture industry, so that productivity and quality of the furniture will be improved. For mass production, every step must be done perfectly and carefully so that every part can be connected and constructed correctly. Because of the reason. above wood and chisel machine that strong, easy to operate.: easy to lay wood accurately, and ergonomic must be developed. ,Wood and chisel machine that be developed has 220 cm length and 30 ernwidth of its bench so that the wood with 200 em length or 'more can be supported accurately especially at its parallel position to the machine vice. For operating the machine easily, the machine bench is made approximately 50 em height, so that the operator with sit down position can operate the machine without exhausted. The wood 'chisel and bit machine can make the hole approximately 7 em depth and 1 ern width., The result of the machine performance test show that the machine can be. operated easily without exhausted. The hole is easily to be made on wood with 200ern length without setting wood position. The hole position is automatically perpendicular to the horizontal line of the wood so that in accordance with the hole position on the wood. There is no vibration on bench and the machine. This condition shows that the construction design is strong enough to the vibration of the motor revolution and the hole feeding.

MODIF'IKASI MESIN BOBOK KAYU UNTUK PENINGKATAN PRODUKTIVITAS MEBEL INDUSTRI KECIL Slamet Karyono -; Edy Purnomo -
INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Vol 7, No 1 (2004): Edisi Juni 2004
Publisher : LPPM UNY

Theproblemsof thefurniture industrytargetareabouttheeffectiveness ofthe useofwood chiselandbit machine becauseithasn't fix machinebench for woodlayingand themachinepositionthat notergonomic.Theseproblemsmake settingtime longer,woodpositionunstable becauseof unfixbench,theviceeasy to brokenbecauseof instabilityof wood,imprecisionof holeposition,and theexhaustedoperatorbecause ofthe machine position.The maingoalof thisvoucherprogramisto modi$wood chiseland bitmachineforpreparingtheconnectionbetweenpinand its holeat u.D. TANGGUH,smallscalefurnitureindustry,sothatproductivifl,andqualityof the furniturewill beimproved.Formassproduction,everystep mustbe doneperfectlyandcarefullysothateverypartcanbeconnectedandconstructedcorrectly.Becauseofthereasonabovewood andchiselmachinethatstrong,easyto operate,easytolaywoodaccurately,and ergonomicmustbe developed.Woodandchiselmachinethatbe developedhas 220cmlengthand 30cmwidthof itsbenchso thatthe wood with200crn lengthormorecan be supportedaccuratelyespeciallyat itsparallelpositionto themachinevice.Foroperaiingthemachineeasily,themachinebenchismadeapproximately50cm heightso that theoperatorwithsitdown positioncanoperatethemachinewithoutexhausted.Thewoodchiselandbitmachinecanmakeiheholeapproximately7 cmdepthand 1 crnwidth..Theresultof themachine performancetestshow thatthemachinecan beoperatedeasilywithoutexhausted.Thehole is easilytobe madeonwoodwith200cmlengthwithoutsettingwood position.The holepositionisautornaticallyperpendicularto thehorizontallineof thewoodsothatinaccordancewiththe holepositionon the wood.Thereisnovibrationonbenchandthemachine.Thisconditionshowsthatthe constructiondesignisstrongenoughto thevibrationof themotorrevolutionandtheholefeeding.

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