NDE for Characterizing Oxidation Damage in Reinforced Carbon‐Carbon

Roth, Don J.; Rauser, Richard W.; Jacobson, Nathan; Wincheski, Russell A.; Walker, James L.; Cosgriff, Laura A.

doi:10.1002/9780470909836.ch15

Cited by 2 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This technique measures changes in impedance of coil placed over a coated surface and correlates to variations in the coating. There are several studies reported in the literature on the application of EC technique to detection and assessment of damage in C/C composites and SiC coatings [4][5][6][7]. However, studies on SiC coating thickness measurements using EC technique are very limited.…”

Section: Introductionmentioning

confidence: 99%

Eddy Current Methodology for Nondestructive Assessment of Thickness of Silicon Carbide Coating on Carbon-Carbon Composites

S. Thirunavukkarasu,

B.P.C. Rao,

T. Jayakumar

et al. 2023

joast

View full text Add to dashboard Cite

Eddy current (EC) methodology has been developed for non-destructive assessment of thickness of Silicon carbide (SiC) coating on carbon-carbon (C/C) composite specimens. For coating, polymer precursor route has been employed and approximate coating thickness has been determined by weight gain method. EC probe signal amplitude has been measured before and after the coating. Despite scatter in the baseline data due to surface roughness on C/C specimens, EC methodology could identify undercoated (thickness <20 µm) specimens. A calibration graph has been established between EC signal amplitude and coating thickness (weight gain) to evaluate the performance of the EC methodology. The methodology has evaluated the coating thickness with error less than ±5 µm. Studies confirm that it is possible to assess the efficacy of coating process and to readily identify thinly coated regions using eddy current imaging.

show abstract

Section: Introductionmentioning

confidence: 99%