Tech Brief 01-06-008

Reverse Engineering Turbine Blade

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Problem:

Turbine components wear over time and require replacement. OEM’s typically charge a premium for spare parts and CAD data.

Traditional Method:

Cutting the blade into several pieces to generate the cross sections. Then the cross sections would be put into CAD. This method needs a donor blade which in many cases may not be available. It is also subject to human error while capturing and inputting the cross section data.

NeoMetrix Solution:

  • Original blade is Scanned in house using the Konica-Minolta Range7 (Figure 1)
  • Scan Data is registered, merged, and aligned in Rapidform XOR. (Figure 2)
  • Multiple cross-sections are cut in order to develop a parametric solid in Rapidform XOR
  • Final model is transferred to Solidworks using “Live Transfer” in order to maintain parametric history.

NeoMetrix Advantage:

  • Complex contours and geometric features are accurately modeled in CAD.
  • Solid model can be used for CNC machining, 2D Drawing development, and FEA analysis.
  • Complete model history allows for future design changes.

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Figure 1 – Original Part

Figure 2 – Laser Scanned Data

Figure 3 – Parametric CAD Model in Solidworks