Measurement of direct strain optic coefficient of YSZ thermal barrier coatings at GHz frequencies

Peter J. Schemmel, Gilles Diederich, Andrew J. Moore

Research output: Contribution to journalArticle

62 Downloads (Pure)

Abstract

We report the first observation of stress induced birefringence in air plasma sprayed (APS) thermal barrier coatings (TBCs) using a reflection based polariscope and GHz illumination. Strain optic coefficients of (−0.0133 ± 0.0102) × 10−9 and (−0.0190 ± 0.0043) × 10−9 were measured for yttria-stabilized zirconia (YSZ) APS coatings of the same thickness deposited on substrates of 3 mm and 1 mm mild steel. The reflection measurement approach was validated by additional measurements of the stress optic coefficient of bulk yttria-partially stabilized zirconia (YTZP) ceramic that were in agreement with previously reported transmission measurements. The ultimate application of this technique is the prediction of remaining life in TBCs.

Original languageEnglish
Pages (from-to)19968-19980
Number of pages13
JournalOptics Express
Volume25
Issue number17
Early online date9 Aug 2017
DOIs
Publication statusPublished - 21 Aug 2017

Fingerprint

yttria-stabilized zirconia
optics
coatings
coefficients
polariscopes
sprayed coatings
air
birefringence
illumination
steels
ceramics
predictions

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Schemmel, Peter J. ; Diederich, Gilles ; Moore, Andrew J. / Measurement of direct strain optic coefficient of YSZ thermal barrier coatings at GHz frequencies. In: Optics Express. 2017 ; Vol. 25, No. 17. pp. 19968-19980.
@article{dad41f06be824abd9b883f92fa9a253e,
title = "Measurement of direct strain optic coefficient of YSZ thermal barrier coatings at GHz frequencies",
abstract = "We report the first observation of stress induced birefringence in air plasma sprayed (APS) thermal barrier coatings (TBCs) using a reflection based polariscope and GHz illumination. Strain optic coefficients of (−0.0133 ± 0.0102) × 10−9 and (−0.0190 ± 0.0043) × 10−9 were measured for yttria-stabilized zirconia (YSZ) APS coatings of the same thickness deposited on substrates of 3 mm and 1 mm mild steel. The reflection measurement approach was validated by additional measurements of the stress optic coefficient of bulk yttria-partially stabilized zirconia (YTZP) ceramic that were in agreement with previously reported transmission measurements. The ultimate application of this technique is the prediction of remaining life in TBCs.",
author = "Schemmel, {Peter J.} and Gilles Diederich and Moore, {Andrew J.}",
year = "2017",
month = "8",
day = "21",
doi = "10.1364/OE.25.019968",
language = "English",
volume = "25",
pages = "19968--19980",
journal = "Optics Express",
issn = "1094-4087",
publisher = "Optical Society of America",
number = "17",

}

Measurement of direct strain optic coefficient of YSZ thermal barrier coatings at GHz frequencies. / Schemmel, Peter J.; Diederich, Gilles; Moore, Andrew J.

In: Optics Express, Vol. 25, No. 17, 21.08.2017, p. 19968-19980.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Measurement of direct strain optic coefficient of YSZ thermal barrier coatings at GHz frequencies

AU - Schemmel, Peter J.

AU - Diederich, Gilles

AU - Moore, Andrew J.

PY - 2017/8/21

Y1 - 2017/8/21

N2 - We report the first observation of stress induced birefringence in air plasma sprayed (APS) thermal barrier coatings (TBCs) using a reflection based polariscope and GHz illumination. Strain optic coefficients of (−0.0133 ± 0.0102) × 10−9 and (−0.0190 ± 0.0043) × 10−9 were measured for yttria-stabilized zirconia (YSZ) APS coatings of the same thickness deposited on substrates of 3 mm and 1 mm mild steel. The reflection measurement approach was validated by additional measurements of the stress optic coefficient of bulk yttria-partially stabilized zirconia (YTZP) ceramic that were in agreement with previously reported transmission measurements. The ultimate application of this technique is the prediction of remaining life in TBCs.

AB - We report the first observation of stress induced birefringence in air plasma sprayed (APS) thermal barrier coatings (TBCs) using a reflection based polariscope and GHz illumination. Strain optic coefficients of (−0.0133 ± 0.0102) × 10−9 and (−0.0190 ± 0.0043) × 10−9 were measured for yttria-stabilized zirconia (YSZ) APS coatings of the same thickness deposited on substrates of 3 mm and 1 mm mild steel. The reflection measurement approach was validated by additional measurements of the stress optic coefficient of bulk yttria-partially stabilized zirconia (YTZP) ceramic that were in agreement with previously reported transmission measurements. The ultimate application of this technique is the prediction of remaining life in TBCs.

UR - http://www.scopus.com/inward/record.url?scp=85027705441&partnerID=8YFLogxK

U2 - 10.1364/OE.25.019968

DO - 10.1364/OE.25.019968

M3 - Article

C2 - 29041683

AN - SCOPUS:85027705441

VL - 25

SP - 19968

EP - 19980

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 17

ER -