Engine Titanium Consortium - Center for Nondestructive Evaluation ...

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Deliverables: Laboratory assessment of sensitivity at diameters greater than 10” diameter using fixed focus transducers. Procedures to account for attenuation effects that occur in titanium billet and thus improve the POD of billet inspection. Report of laboratory and factory evaluations including sensitivity data for use by the Inspection Systems Capability Working Group and cost comparisons for the different inspection approaches. Calibration standards including 14” diameter chord block and transducers (fixed focus and phased array assemblies) as needed. Revision to AMS 2628 titanium billet specification submitted to SAS Committee K. Metrics: Achievement of #1FBH in 10” diameter billet with no significant speed reduction from current multizone inspection. Major Accomplishments and Significant Interactions: Date June 16, 1999 Description Technical Kick-off Meeting in West Palm Beach, FL Publications and Presentations: Date Description Quarterly Report – January 1, 2002 –March 31, 2002 print date/time: 6/6/2002 - 8:39 AM – Page 33
Project 1: Task 1.3: Subtask 1.3.1: Production Inspection Titanium Forging Inspection Fundamental Property Measurements for Titanium Forgings Team Members: HW: R. Bellows, Waled Hassan ISU: Bruce Thompson, Frank Margetan, Ron Roberts, Tim Gray GE: Ed Nieters, Mike Gigliotti, Lee Perocchi, Dave Copley, Wei Li, Jon Bartos, Bill Leach PW: Jeff Umbach, Bob Goodwin, Andrei Degtyar, Harpreet Wasan Students: A. Li Program initiation date: June 15, 1999 Objectives: • To gain the fundamental understanding of the ultrasonic properties of titanium forgings that is needed to provide a foundation for the development of reliable inspection methods that provide uniformly high sensitivity throughout the forging envelope. • To acquire the data necessary to relate the detectability of defects in forgings to component properties (flow line characteristics, surface curvature) and defect properties (size, shape, composition, location, and orientation) thereby providing a foundation for the design of improved inspections and the evaluation of inspection capability. Approach: Sample Fabrication: A critical flaw list for titanium forgings will be generated in cooperation with RISC including description of typical morphologies for use in the model development efforts. This list will be used to define a limited set of forging standards with embedded defects. Forging samples with varying flow line characteristics and surface curvatures, some of which will contain flat-bottomed holes or synthetic inclusions will be defined and manufactured. Deformation models will be used to predict variations in metal flow distributions and guide the sample development. Approximately 32 coupons from forgings with varying flow line directions, flow line densities, and geometrical curvatures (concave and convex) will be acquired. Samples available from the CBS and TRMD programs will be utilized to the extent possible. Quarterly Report – January 1, 2002 –March 31, 2002 print date/time: 6/6/2002 - 8:39 AM – Page 34
Page 1 and 2: Engine Titanium Consortium Quarterl
Page 3 and 4: Project 1: Task 1.1: Subtask 1.1.1:
Page 5 and 6: findings for the first billet studi
Page 7 and 8: measured P(L) curve, and tabulate t
Page 9 and 10: 1.2 1.0 0.8 V-DIE-A coupon "D" (axi
Page 11 and 12: Attenuation (dB/in) . Waspalloy Att
Page 13 and 14: Deliverables: Fundamental propertie
Page 15 and 16: Small Diameter Billet Assessment: A
Page 17 and 18: Under normal circumstances one woul
Page 19 and 20: Plans (April 1, 2002 - June 30, 200
Page 23 and 24: system will be at GE, and evaluatio
Page 25 and 26: fixed-focus transducers that were n
Page 27 and 28: Back-Wall Scan FBH scan 20% 57% 49%
Page 29 and 30: 63% Back-Wall Scan 74% FBH scan 58%
Page 31 and 32: Figure 6. Noise and target amplitud
Page 33: Original Date Revised Date Descript
Page 37 and 38: Objective/Approach Amendments: Obje
Page 39 and 40: (a) Transducer is: 15 MHz 0.5”-Di
Page 41 and 42: FOM (std. units) 0.20 0.18 0.16 0.1
Page 43 and 44: Peak> Range of Ave. Range of Peak G
Page 45 and 46: The average noise characteristics,
Page 47 and 48: Noise C-scans through the “Flat S
Page 49 and 50: 4.0” Convex Block; Flat Side Insp
Page 51 and 52: % FSH Noise Measurements from flat
Page 53 and 54: Original Revised Description Status
Page 57 and 58: possible candidates. Development wo
Page 59 and 60: Forging Calibration Standard #1 1.7
Page 61 and 62: Surface Finish Studies The plans fo
Page 63 and 64: Figure 4. Beam diameter determinati
Page 65 and 66: size was adequate to support a 0.04
Page 67 and 68: phased array instruments. The desig
Page 69 and 70: Original Date Revised Date Descript
Page 71 and 72: Task 2: Task 2.1: Subtask 2.1.1: In
Page 73 and 74: Objective/Approach Amendments: Obje
Page 75 and 76: Figure 2. A preliminary design of t
Page 77 and 78: Publications and Presentations: Dat
Page 79 and 80: Survey of common practices (industr
Page 81 and 82: include air drying, oven drying, an
Page 83 and 84: aluminum oxide blasting is conceali
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Original Date Revised Date Descript
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Project 3: Task 3.1: Subtask 3.1.1:
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the methodology. These may be thoug
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model parts across 17 micrograph pl
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Z Y X Figure 4. Angle View of Void
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A report documenting the relative e
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naturally occurring flaws in forgin
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Milestones: Revised dates of TBD ar
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7a-7l 6 8 9 10 Key additional ingre
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incorporating the results of the pr
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