Engine Titanium Consortium - Center for Nondestructive Evaluation ...

Original
Date
Revised
Date
Description
Status
with the ahat vs. a and the Re methods, and
describing and illustrating the advantages of the
new methodology.
Development of the Capability to Make Predictions
of the Local POD in a Final Forging Geometry
24 months Analyze results (anisotropy, geometry effects) of
Production and Inservice Inspection Tasks for
implications to POD as a function of position in
typical forging geometries. (ISU with support from
AS, PW)
27 months Define implementation plan for POD as function of
position. (GE with support from ISU, PW, and AS)
30 months Report providing default POD curves for titanium
forgings, for both production and in-service
inspections, for use by the OEMs and FAA in life
management/risk assessment studies.
30 months Initial estimates of POD and PFA for sonic-shaped
titanium forgings based on use of the FBH, SHA,
CBS data, and field finds.
36 months Complete modeling tools for the effects of
geometry on flaw response and noise distributions.
(ISU with support from PW)
36 months Revised estimates of POD as a function of forging
geometry, including effects of anisotropy,
curvature, and position within the forging.
38 months Complete experimental validation of modeling
tools. (PW with support from GE, AS) Complete
the development of the methodology needed to
account for positional effects on POD. (ISU with
support from GE, PW, and AS)
40 months Compare with ahat vs. a and the R e methods. (GE
with support from ISU and PW)
42 months Provide updated methodology with POD as
function of position as an output. (ISU)
ongoing
Improvements/Transfer of the POD/PFA
Methodology Software to OEMs
Modify the modeling software if and when
necessitated by experimental data. (ISU)
40 months Provide OEMs with integrated software containing
flaw response and noise models as influenced by
anisotropy and geometry. (ISU)
48 months Review results for effects of introducing numerical
approximation methods to the flaw response
surface to speed the operation of the new
methodology. (ISU, with support of AS, GE, PW)
52 months Complete development and integrate validated
methods to add noise to flaw response in c-scan
images in the presence of anisotropy. (ISU with
support from PW)
60 months Provide OEMs with final software and procedure
packages. (ISU)
60 months Report describing the technical details of the POD
prediction methodology for sonic-shaped and final
Quarterly Report – January 1, 2002 –March 31, 2002
print date/time: 6/6/2002 - 8:39 AM – Page 103