This document discusses tools for material and process selection, including CES selector software. It provides details on using CES selector, which is a software package that helps answer questions about what materials to use and processes others have tried. CES selector makes use of an extensive database and allows for cost modeling. As an example, the document discusses using CES selector to determine the most economical process for a batch of 100,000 spark plug insulators is powder injection molding.

1. Vikash Kumar
Material and process selection

2.  Why computer basis selection?
 Tools of computer basis selection
 CES selector
 Process selection of spark plug insulator
 Cost modeling
 Postscript

4. • Limited Resolution
• Clumsy to use (awkward to handling)
• They are not the way to get a definitive
selection
• Limited number of material can be shown
on charts
• Selection using charts are practical when
there are few constraints

5.  CES
 FEM
 ANSYS
 CAD MODELING

6. • The Cambridge Engineering Selector (CES)
is a software package that has been
produced to help answer these question
• What to use?
• Has any one tried this before?
• Did it work?

8. Developed over a number of years by Mike
Ashby and David Cebon, the Selector is
now being marketed by their company,
Granta Design. The selector makes use of
an extensive database of information

13. Some important attributes for process
selection are:-
• Shape
• Tolerance
• Surface roughness
• Cost modelling (economic batch size)

20.  For required batch size of 1,00,000. only one
process family survives : “powder methods”
 family of powder methods is a large one
including die pressing and sintering ,powder
injection molding , powder extrusion
 These could be added to charts but it is very
lengthy process to find out but CES system
does this easily

22.  The same system implements cost model
“powder injection molding” is more
economical
 So, insulator are made commercially by
“powder injection molding ”