Engine Titanium Consortium - Center for Nondestructive Evaluation ...
Engine Titanium Consortium - Center for Nondestructive Evaluation ...
Engine Titanium Consortium - Center for Nondestructive Evaluation ...
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Project 1:<br />
Task 1.3:<br />
Subtask 1.3.2:<br />
Production Inspection<br />
<strong>Titanium</strong> Forging Inspection<br />
Inspection Development <strong>for</strong><br />
<strong>Titanium</strong> Forgings<br />
Team Members:<br />
HW: Andy Kinney, Tim Duffy, Waled<br />
Hassan<br />
ISU: Tim Gray, Bruce Thompson, Frank<br />
Margetan, Ron Roberts<br />
GE: Dave Copley, Ed Nieters, Wei Li, Bob<br />
Gilmore, , Jon Bartos, , Richard Klaassen,<br />
Mike Keller, John Halase<br />
PW: Jeff Umbach, Bob Goodwin, Andrei<br />
Degtyar, Harpreet Wasan, Dave Raulerson<br />
Students: none<br />
Program initiation date: June 15, 1999<br />
Objectives:<br />
• To develop a high sensitivity ultrasonic inspection of titanium <strong>for</strong>gings utilizing a 1/128” (#½)<br />
FBH calibration target, digital C-scan image acquisition, and signal-to-noise rejection criteria<br />
target without significant cost increase.<br />
• To demonstrate the new technique in a production environment over an extended period to<br />
determine its feasibility (both cost and readiness) as a production inspection.<br />
Approach:<br />
Forging Selection and Preparation: Select one representative <strong>for</strong>ging design from each of the<br />
OEMs <strong>for</strong> use throughout the duration of this subtask (both inspection development and<br />
demonstration). Selection criteria will include:<br />
• <strong>for</strong>ging shapes that address generic concerns such as effects of curvature, surface condition,<br />
and part thickness<br />
• <strong>for</strong>ging material and microstructure<br />
• <strong>for</strong>ging cost<br />
• production volume and schedule<br />
Sensitivity and coverage maps will be developed <strong>for</strong> the selected <strong>for</strong>gings using model-based tools.<br />
CAD files will be provided to ISU by each of the OEMs <strong>for</strong> the selected <strong>for</strong>ging geometries.<br />
Particular attention will be given to the effect of curved surfaces on inspection sensitivity relative to<br />
flat surface sensitivity. Calibration standards will be designed to cover the range of metal travel and<br />
curvatures found on the selected <strong>for</strong>gings. Plans include two sets of standards in order to support<br />
multiple member involvement.<br />
Transducer Design Models: Fixed focus and phased array transducer design models will be<br />
reevaluated in detail to determine reasons <strong>for</strong> discrepancies between predicted and measured<br />
subsurface focused transducer behavior observed during Phase I work. This reevaluation will focus<br />
initially on assessing how well the input parameters used <strong>for</strong> the models represent the physical<br />
Quarterly Report – January 1, 2002 –March 31, 2002<br />
print date/time: 6/6/2002 - 8:39 AM – Page 54