Engine Titanium Consortium - Center for Nondestructive Evaluation ...

More documents

Recommendations

Info

Noise Measurements thru Flat Entry Surfaces 1.0" water path; 57 dB Noise Measurements thru Flat Entry Surfaces 1.0" water path; 57 dB RMS Grain Noise (% of FSH) . 14 12 10 Flat, FBHs in back Flat, FBHs in front 0.75 cv 2.0 cv 8.0 cv 4.0 cx 10.0 cx Theory 8 6 4 2 Exp. values corrected Model assumes: FOM = 1.1* (5.6E-4*freq^1.25) for electronic noise Atten = 5.7E-4*freq^1.8 0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 Metal Depth (inches) RMS Grain Noise (% of FSH) . 14 Theory Exp. Ave. 12 Exp. values corrected for electronic noise 10 8 6 4 2 Model assumes: FOM = 1.1* (5.6E-4*freq^1.25) Atten = 5.7E-4*freq^1.8 0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 Metal Depth (inches) Figure 11. Comparison of measured and predicted rms grain noise levels for inspections through the flat surfaces of the six noise curvature blocks using a 1.0” water path. Left-hand panel displays the measured noise levels for the six blocks individually, while the right-hand panel displays their average. Coupon Noise / Average (a) Coupon Noise / Average . 1.80 1.60 1.40 1.20 1.00 RMS grain noise in Ti noise curvature blocks measured from flat side, water path = 2.4" Normalized by average over six coupons. flat with FBHs in back 0.75 cv 2.0 cv 8.0 cv 4.0 cx 10.0 cx 0.80 (5 and 0.62 dB corrections to "flat") 0.60 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.4 1.3 1.2 1.1 Depth (inches) RMS grain noise in Ti noise curvature blocks measured from flat side, normalized by average over six coupons. 4.0 cx- 1.0" 4.0 cx - 2.4" 4.0 cx - ave. 1.0 0.9 0.8 4.0” – Convex Specimen 0.7 (c) 0.6 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 Depth (inches) Coupon Noise / Average Coupon Noise / Average . 1.80 1.60 1.40 1.20 1.00 0.80 (b) (d) RMS grain noise in Ti noise curvature blocks measured from flat side, water path = 1" Normalized by average over six coupons. flat with FBHs in back 0.75 cv 2.0 cv 8.0 cv 4.0 cx 10.0 cx 0.60 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 Depth (inches) RMS grain noise in Ti noise curvature blocks measured from flat side, normalized by average over six coupons. 0.75” – Concave Specimen 0.6 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 Depth (inches) 0.75 cv - 1.0" 0.75 cv - 2.4" 0.75 cv - ave. Figure 12. (a)-(b): Microstructure difference factors, as functions of depth, measured using water paths of 2.4” and 1.0”, respectively. (c)-(d): More detailed views of the microstructure correction factors for two of the blocks. Quarterly Report – January 1, 2002 –March 31, 2002 print date/time: 6/6/2002 - 8:39 AM – Page 47
4.0” Convex Block; Flat Side Inspection; 1.0” Water Path Depth Zone Gate 1 0.8”-1.0” Gate 2 0.7”-1.1” Gate 3 0.6”-1.2” Gate 4 0.5”-1.3” OD ID Figure 13. Gated peak noise C-scan images for four choices of the time gate (or depth zone). Results are shown for one of the noise curvature blocks inspected at a 1” water path. Quarterly Report – January 1, 2002 –March 31, 2002 print date/time: 6/6/2002 - 8:39 AM – Page 48
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 and 34: 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: Noise C-scans through the “Flat S
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 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
Page 89 and 90: the methodology. These may be thoug
Page 91 and 92: model parts across 17 micrograph pl
Page 93 and 94: Z Y X Figure 4. Angle View of Void
Page 97 and 98: A report documenting the relative e
Page 99 and 100:
Project 3: Task 3.1: Subtask 3.1.2:
Page 101 and 102:
naturally occurring flaws in forgin
Page 103 and 104:
Milestones: Revised dates of TBD ar
Page 105 and 106:
Original Date Revised Date Descript
Page 107 and 108:
Project 3: Task 3.1: Subtask 3.1.3:
Page 109 and 110:
7a-7l 6 8 9 10 Key additional ingre
Page 111 and 112:
incorporating the results of the pr
show all

Engine Titanium Consortium - Center for Nondestructive Evaluation ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?