Engine Titanium Consortium - Center for Nondestructive Evaluation ...

(UO, US, UM, UH) were machined, and were inspected ultrasonically (see figure 16 for
identification of faces). Then the remaining faces were machined, with the exception of the bore
UZ, since the piece will be delivered with a solid bore.
Figure 16. Configuration and face identification of the synthetic inclusion forging.
Plans (April 1, 2002 – June 30, 2002):
Property Measurements Continue efforts to relate grain noise variations within forgings to forging
strain variations as predicted using DEFORM.
Noise Curvature Blocks: Perform grain noise measurements through the curved surfaces of the
blocks. Compare RMS and gated-peak noise statistics, corrected for microstructural differences to
the predictions of the ISU model.
Synthetic Inclusion Disk: The remaining faces of the machined forging will be inspected
ultrasonically. The data will be analyzed to verify that the noise levels and noise distributions make
it a suitable piece for the synthetic inclusion forging. It will then be delivered to GE CR&D for
continued machining into its final form.
Milestones:
Original
Date
Revised
Date
Description
Status
Flaw and sample definition
3 months Generate critical flaw list for titanium forgings in
cooperation with RISC and provide to 3.1.2. (All)
4 months Utilize deformation model predictions to guide
sample development. (PW with support from ISU)
6 months 11 months Provide list of samples and sample geometry to be
developed for forging property measurements.
(ISU with support from GE, PW)
Complete
Complete
Complete
Quarterly Report – January 1, 2002 –March 31, 2002
print date/time: 6/6/2002 - 8:39 AM – Page 51