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GAS TURBINE ENGINE JTP FATIGUE TESTING

GAS TURBINE ENGINE JTP FATIGUE TESTING. HCAT Review Meeting 1-2 April 2003 San Diego. SUBSTRATES IN 718 (304) IN901 (184) A286 (136) AM355 (184) 4340(184) 9310 (96) 17-4PH (184). COATINGS (0.003”, 0.015 ”) Bare (Peened/Unpeened) EHC HVOF WC-17Co T-800 T-400 Cr 3 C 2 -20(Ni,Cr)

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GAS TURBINE ENGINE JTP FATIGUE TESTING

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  1. GAS TURBINE ENGINE JTP FATIGUE TESTING HCAT Review Meeting 1-2 April 2003 San Diego

  2. SUBSTRATES IN 718 (304) IN901 (184) A286 (136) AM355 (184) 4340(184) 9310 (96) 17-4PH (184) COATINGS (0.003”, 0.015”) Bare (Peened/Unpeened) EHC HVOF WC-17Co T-800 T-400 Cr3C2-20(Ni,Cr) Plasma Spray T-400 WC-17Co HVOF/Natural Gas IN718, 4340, AM355 BASIC DoE MATRIX

  3. FATIGUE DoE VARIABLES • Baseline (bare) vs. coating • Peened vs. unpeened (bare only) • Temperature - 300°F vs. 750°F • Dynamic ratio (test type) • A = 0.95 ( control) vs. 0.5 (P control) • R = 0.025 ( control) vs. 0.33 (P control)

  4. 0.5” coating patch

  5. PRELIMINARY COATING BEHAVIOR OBSERVATIONS • EVERYTHING YOU CAN IMAGINE! • +/- FRACTURE PLANE • LOOSE “CIGAR BAND” • MULTIPLE CIRCUMFERENTIAL CRACKS • TOTAL SPALLATION • SOME LONGITUDINAL CRACKS • NO OBVIOUS PATTERN • UNDER PATCH/AT EDGE/OUTSIDE PATCH • TEMPERATURE • COATING TYPE/THICKNESS • SUBSTRATE TYPE

  6. FRACTURE “STATISTICS” LG JTP WAS 4340/300M/A100 AT HRc 52-54

  7. TESTING PROGRESS • 194 individual test groups • 145 coated (75%) • 82 tested (42% of total, 56% of available) • 1276 total test specimens • 988 coated (77%) • 785 tested (60% of total, 80% of coated)

  8. STATUS – GTE FATIGUE PROGRAM • ALL SPECIMENS MANUFACTURED/PEENED FOR ALL PHASES • BARE, EHC, HVOF (WC-Co, T-400, T-800, Cr3C2-20NiCr ), & PS T-400 COATED AND IN TEST • PS WC-Co and HVOF/NATURAL GAS SPECIMENS AVAILABLE • WILL FINISH BY 12/31/03 IF REST OF SPECIMENS ARE COATED SOON

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