Edisi 11, Nomor 1  
Judul  OPTIMASI BERBASIS KONTROL PID UNTUK SISTEM SUSPENSI SEMI AKTIF KENDARAAN 
Penulis  Edy Suryono 1) Petrus Heru Sudargo 2) 1), 2) Jurusan Teknik Mesin, Akademi Teknologi Warga Surakarta Email: qwedys@yahoo.com 
Abstrak  The experiment focuses on semiactive suspension control of the vehicle, which is expected to get a good performance and comfort based method of Proportional, Integral, and Derivative (PID). Suspension plays a very important role in providing comfort to disturbances such as uneven road surfaces. To obtain this goal modeling in the form of semiactive suspension of quarter car by controlling the suspension damping due to the road disturbances. The main burden in the form of vehicle mass, mass of the suspension and mass of passengers. The analysis conducted from the evenness of road as the input at 10 cm for 30 seconds. Results of the simulations it was found that the optimum settings for semiactive suspension sistem in the form of the proportional value at 231,7788, Integral at 5316,6935 and derivative at 2,172. The obtained of rise time at 0.00619 seconds, settling time at 0.00662 seconds and overshoot at 10.9%, peak at 1.11 and a maximum seat and passenger displacement by 49mm. The average decrease displacement between sprung and unsprung is a 5,2 mm and reduce of settling time at 30,34%. Keyword : PID, Semi active, Suspension, Sprung mass, Unsprung mass, Quarter car model 
Paper 11  1 PDF 
Edisi 10, Nomor 6  
Judul  PENINGKATAN EFEKTIFITAS KINERJA RADIATOR 
Penulis  Y. Yulianto Kristiawan 1), Arif Setyo Nugroho 2), Petrus Heru Sudargo 3) 1),2),3)Progdi.Teknik Mesin,Akademi Teknologi Warga Surakarta.

Abstrak  One solution to overcome the over heating is the initial cooling process before going into the Key word : PCM,over heating, CFD, Heat transfer 
Paper 10  6 PDF 
Edisi 10, Nomor 5  
Judul  KOMPUTASI DINAMIKA FLUIDA AIR ISIAN PADA ELBOW EKONOMISER 
Penulis  1)Arif Setyo Nugroho, 2)Heri Kustanto 1),2)(Program Studi Teknik Mesin Akademi Tekhnologi Warga Surakarta) 
Abstrak  Piping system using a branched elbow serves to combine stuffing water comes from natural springs with water from the main kondensator.diameter is 20,32 cm diameter pipe connection of the condenser is 5.08 cm. Flow rate through the big elbow diameter was 0,4 m/s. Speed through the small pipe is 1 m/s. Variations in water temperature stuffing into the elbow of the same condenser with a water temperature of 27 derajat C and a natural source of 45 derajat C. Simulation using Computational Fluid Dynamics program FLUENT to form an engaging profile and the results can be known. From the simulations it is known to supply water with a temperature of 45 derajat C, is the flow rate of the pipe diameter is 71,526 kg/s and for small pipe flow rate is equal to 44,704 kg/s. For heat transfer 4604,563 W. For data simulation results can be known to supply water at 27oC computational data obtained tubule flow rate is 44,7039 kg/s and for the flow rate of the pipe is equal to 71,526 kg/s, for heat transfer gained 17,25 W. Keywords : Elbow, temperature, ekonomiser, computation fluid dynamics 
Paper 10  5 PDF 
Edisi 10, Nomor 4  
Judul  ANALISA PENCAPAN KAIN KAPAS 100% DENGAN MENGGUNAKAN ZAT WARNA PIGMEN 
Penulis  Yuni Utami 1), Subiyati 2), Bambang Margono 3) 
Abstrak  Printing with picment dyes can be used on all types of types of fibers. Pigment dyes have no affinity to the fibers, the before the fixation to the fibre required binder the strenght of the bond between the picment dye textile materials depends on the holding capacity of the binder used. The research use fhe warp fabric stiffness value to as tied variable and binder concentration, type of catalyst, catalyst concentration and preserved heater temperature as free variable. The result shows that binder concentration factor (A) 254.8089, catalyst concentration (C) 39.6688, type of catalyst (B) 33.1676 significantly influence the warp direction of the fabric stiffness response (mg.cm) and only binder concentration factor (A) 37.1454 that significantly influence the direction of the fabric stiffness response weft(A) 254.8089, catalyst concentration (C) 39.6688, type of catalyst (B) 33.1676 significantly influence the warp direction of the fabric stiffness response (mg.cm) binder concentration factor (A ) 37.1454 Key word: Binder, catalyst, concentration 
Paper 10  4 PDF 
Edisi 10, Nomor 3  
Judul  PENGARUH DIAMETER PIPA, LETAK KATUP, VOLUME PRESSURE TANK DAN SUDUT INLET FILTER TERHADAP PEMAKAIAN ARUS LISTRIK PADA POMPA AIR 
Penulis  Heri Kustanto, Arif Setyo Nugroho Progdi Teknik Mesin, Akademi Teknologi Warga Surakarta. 
Abstrak  One of the problem faced by water consumer is water debit cannot flow as one expected, so it wastes electricity. The obyektive of the research is to know the factors effect on electric current to the water punp and to kwow the optimal factor level on a.pipe diameter, b.the position of base valve, c.pressure tank volume and d.inlet filter angle so the ses the taguchi method with pipe diameter the position of base valve, pressure tank volume and inlet filter angle as free variable and electrics current as fied variable. The result of the experiment with taguchi method shows that the optimal condition reached the combination of pipe diameter level of 1 inch, the position of base valve 1 meter pressure tank volume of 2 litre and inlet filter angle of 45 degrees. The result of the comparison between condition of usages in general with optimal condition shows that the electric current concumption can be reduced 53,84 % (0,7 amperes Key words : Water pump, electric current, taguchi 
Paper 10  3 PDF 