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All Journal Journal of Engineering and Technological Sciences Mesin
Indra Djodikusumo
Faculty of Mechanical Engineering and Aerospace, Institute of Technology Bandung
Engineering Mechanical Engineering

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Tolerance Stack Analysis in Francis Turbine Design Djodikusumo, Indra; Suherman, Koko; Oken, Paskalis Bowo A.
Journal of Engineering and Technological Sciences Vol 42, No 1 (2010)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (319.831 KB) | DOI: 10.5614/itbj.eng.sci.2010.42.1.6

Abstract

The  tolerance  stacking  problem  arises  in  the  context  of  assemblies from  interchangeable  parts  because  of  the  inability  to  produce  or  to  join  parts exactly  according  to  nominal  dimensions.  Either  the  relevant  part’s  dimension varies around some nominal values  from part to part or the act of assembly that leads  to  variation.  For  example,  as  runner  of  Francis  turbine  is  joined  with turbine shaft via mechanical lock,  there is not only variation in the diameter of runner  and the concentricity between the runner  hole  and  turbine  shaft, but also the  variation in  concentricity  between  the  outer  parts  of  runner  to runner hole. Thus,  there  is  the  possibility  that  the  assembly  of  such  interacting  parts  won’t function  or  won’t  come  together  as  planned.   Research  in  this  area  has  been conducted and 2 mini hydro Francis turbines (800 kW and 910 kW) have been designed and manufactured for San Sarino and Sawi Dago 2 in Central Sulawesi. Experiences  in  analyzing  the  tolerance  stacks  have  been  documented.  In  this paper it will be demonstrated how the requirements of assembling performance are derived to be the  designed    tolerances  of each interacting component, such  a way that the assembling would be functioning and come together as planned.
PENGOLAH MIKRO DAN CONTOH APLIKASINYA DALAM SISTEM POSITIONING Djodikusumo, Indra
Mesin Vol 3, No 4 (1984)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.941 KB)

Abstract

Pengolah Mikro sebagai elemen elektronik yang relatif baru, mempunyai pengaruh demikian besar dalam bidang teknik mesin. Pengolah mikro merupakan suatu rangkaian terpadu yang bila dilengkapi dengan komponen-komponen lain tang diperlukan dapat melaksanakan instruksi-instruksi yang diberikan dalam bentuk kode. Sistem positioning yang biasa dijumpai dalam mesin perkakas CNC akan dibahas sebagai salah satu contoh aplikasi dari Pengolah Mikro dalam Teknik Mesin.
PEMANFAATAN SISTEM CAD/CAM/CAE DALAM REVERSE DAN FORWARD ENGGINEERING UNTUK TURBIN FRANCIS Djodikusumo, Indra; Santoso, Lukman; Haris, Rahmat
Mesin Vol 22, No 2 (2007)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (833.45 KB)

Abstract

The oil price has been increasing since the last few years. Since then the utilization of hydro power plant has also been increasing. The hydro power plant is very well known as environtmental friendly power plant and therefore its utilization is demanded all around the world. Indonesia has planned to build up until 488 MW micro and mini hydro power plant until the year 2020. Half of this is micro-hydro power plant and the other half is mini-hydro power plant. The turbines for micro-hydro power plant have been produced locally, but the other half which are mini-hydro power plant are still imported from foreign countries. It is the intention of this applied research to develop the capability of local industry to design and manufacture the Francis turbine for mini-hydro power plant from 300 kW until 5 MW. The utilization of CAD/CAM/CAE System is very intensif during the development phases. Reverse and forward engineering has been applied for this purpose. The good result has been achieved. The continuous improvement shall be done in the future in order to have the better result.
Co-Authors Haris, Rahmat Koko Suherman Lukman Santoso Paskalis Bowo A. Oken