Engine Titanium Consortium - Center for Nondestructive Evaluation ...

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5 MHz C-scan Image Comparisons: B1AW2-B Side 2 Model Experiment Model Side 4 Experiment 31(H) x 31(V) @10 mils, 2dB peak amplitude @2dB=573 mv deviation=155% or 8.1 dB 60(H) x 30(V) @10 mils, 2dB peak amplitude @2dB=225 mv 51(H) x 31(V) @10 mils, 0dB peak amplitude @0dB=901 mv deviation=474% or 15.2 dB 60(H) x 30(V) @10 mils, 0dB peak amplitude @0dB=157 mv Model Side 5 Experiment Model Side 6 Experiment 31(H) x 31(V) @10 mils, 2dB peak amplitude @2dB=111 mv deviation=-49% or -5.8 dB 60(H) x 30(V) @10 mils, 2dB peak amplitude @2dB=217 mv 31(H) x 31(V) @10 mils, 0dB peak amplitude @0dB=192 mv deviation=-51% or -6.1 dB 60(H) x 30(V) @10 mils, 0dB peak amplitude @0dB=384 mv Multizone Color Code 0 128 255 Experiment 255 = 500mv for sides 2, 5 and 6 = 250mv for side 4 Plans (April 1, 2002 – June 30, 2002): Figure 5. 5 MHz C-scan Image Comparisons: B1AW2-B Primary plans for this period are to complete the analysis of the CBS data. Assuming approval of the restart technical plan by the FAA, technical work will resume as directed by the agency. Milestones: Revised dates of TBD are shown for most of the tasks, given that work has been stopped while the problems with the random defect block are being addressed. Revised dates to be provided in next report. Original Revised Description Status Date Date Approach to tune flaw response model to the behavior of naturally occurring flaws 4 months TBD Provide a written description of the recommended method (GE, ISU) 6 months TBD A report defining a method for relating properties of naturally-occurring flaws to the parameters of the ISU model. 12 month deliverable of 3.1.2 is serving as a common basis for 3.1.1, 3.1.2. General procedure for tuning flaw response model is included in the 3.1.2 white-paper. Completion of full report delayed by redirection of work. Improvements and assessment of POD/PFA Quarterly Report – January 1, 2002 –March 31, 2002 print date/time: 6/6/2002 - 8:39 AM – Page 93
Original Date Revised Date Description Status methodology 12 months TBD Report results from applying RDB and CBS data to validate the ISU models developed in Phase I. (ISU, with support from AE, GE, PW) 12 months TBD A report assessing success of the Phase I development of a new POD methodology. Ongoing Modify the modeling software if and when necessitated by experimental data. (ISU) 30 months Review and report on effects on POD of calibration response variability, and uncertainty in determining flaw size, conducted on Nickel only. (GE, with support from ISU) Provide OEMs with integrated software containing flaw response and noise models. (ISU) 30 months Report documenting the software and material characterization procedures with which the OEMs can implement the new methodology. 48 months Complete development and validation of models for the effects of microstructure on beam profiles and apparent attenuation. (ISU, PW with support from GE, AE) 60 months TBD Provide OEMs with final software and procedure packages. (ISU) Completion of full report delayed by redirection of work. Completion of full report delayed by redirection of work. POD for titanium billet – existent/new data analysis, and use of the CBS 12 months TBD Complete report of analysis of CBS data. (ISU, with support from AE, GE, PW) Ongoing Updated POD estimates for naturally occurring flaws in titanium alloys as new field-find data become available. (GE, ISU, with support from AE, ISU) 42 months Initiate POD assessment of revised inspection approaches for large diameter billet (10″ to 14″). (PW with support from ISU, GE) Characterize transducers to be used in inspection of large diameter billets. (Utilize results from 1.2.1) 42 months Report documenting the revised estimates of POD for larger diameter titanium billet 51 months Predict response for large diameter billets. Use calibration standards, RDB, and chord blocks for validation as appropriate. (ISU with support from PW, GE) Provide POD estimate for larger diameter billet. (ISU, with support from AE, GE, PW) Compare results with those from alternative POD methodologies. (GE, with support from ISU) 51 months Report documenting the estimates of POD and PFA for titanium billet based on use of the random defect block, CBS data, and data reported to JETQC, including comparison with POD results from existent methodologies. Completion of full report delayed by redirection of work. Quarterly Report – January 1, 2002 –March 31, 2002 print date/time: 6/6/2002 - 8:39 AM – Page 94
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Engine Titanium Consortium Quarterl
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Project 1: Task 1.1: Subtask 1.1.1:
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findings for the first billet studi
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measured P(L) curve, and tabulate t
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1.2 1.0 0.8 V-DIE-A coupon "D" (axi
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Attenuation (dB/in) . Waspalloy Att
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Deliverables: Fundamental propertie
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Small Diameter Billet Assessment: A
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Under normal circumstances one woul
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Plans (April 1, 2002 - June 30, 200
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system will be at GE, and evaluatio
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fixed-focus transducers that were n
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Back-Wall Scan FBH scan 20% 57% 49%
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63% Back-Wall Scan 74% FBH scan 58%
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Figure 6. Noise and target amplitud
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Original Date Revised Date Descript
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Objective/Approach Amendments: Obje
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(a) Transducer is: 15 MHz 0.5”-Di
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FOM (std. units) 0.20 0.18 0.16 0.1
Page 43 and 44: Peak> Range of Ave. Range of Peak G
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Page 61 and 62: Surface Finish Studies The plans fo
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Page 67 and 68: phased array instruments. The desig
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Page 71 and 72: Task 2: Task 2.1: Subtask 2.1.1: In
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Page 81 and 82: include air drying, oven drying, an
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Engine Titanium Consortium - Center for Nondestructive Evaluation ...

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