AN INVESTIGATION INTO THE EFFECT OF CRITICAL PARAMETERS ON RESIDUAL STRESS BUILD-UP IN THERMAL BARRIER COATING

B. Srivathsa; D.K. Das

doi:https://doi.org/10.24107/ijeas.251245

Makale detayları

AN INVESTIGATION INTO THE EFFECT OF CRITICAL PARAMETERS ON RESIDUAL STRESS BUILD-UP IN THERMAL BARRIER COATING

Yazarlar:

B. Srivathsa | D.K. Das

Yayıncı:

Akdeniz University

Dergi:

International Journal of Engineering and Applied Sciences 2015 Vol.7 Issue 1, pp.44-58

Belge Tipi:

Makale

Yayın Tarihi:

2/2015

Belge Dili:

Türkçe

Document ID (Org No.):

2000459523

Sıklık:

Üç Aylık

eISSN:

1309-0267

DOI:

https://doi.org/10.24107/ijeas.251245

Özet:

 

Thermal barrier coatings (TBCs) are widely used on different hot components of gas turbine engines such as
blades and vanes. Although, several mechanisms for the failure of the TBCs have been suggested, it is largely
accepted that the durability of these coatings is primarily determined by the residual stresses that are developed
during the thermal cycling. In the present study, the residual stress build-up in an electron beam physical
vapour deposition (EB-PVD) based TBC on a coupon during thermal cycling has been studied by varying three
parameters such as cooling rate, TBC thickness and substrate thickness. A two-dimensional thermo-mechanical
plane strain finite element simulations have been performed for thousand cycles. It was observed that these
variations change the stress profile significantly and stress severity factor increases non-linearly. Overall, the
predictions of the model agree with reported experimental as well as simulated results.

Makale detayları

AN INVESTIGATION INTO THE EFFECT OF CRITICAL PARAMETERS ON RESIDUAL STRESS BUILD-UP IN THERMAL BARRIER COATING

Yazarlar: B. Srivathsa | D.K. Das

Yayıncı: Akdeniz University

Dergi: International Journal of Engineering and Applied Sciences 2015 Vol.7 Issue 1, pp.44-58

Belge Tipi: Makale

Yayın Tarihi: 2/2015

Belge Dili: Türkçe

Document ID (Org No.): 2000459523

Sıklık: Üç Aylık

eISSN: 1309-0267

DOI: https://doi.org/10.24107/ijeas.251245

Sayı

Yazarlar:

B. Srivathsa | D.K. Das

Yayıncı:

Akdeniz University

Dergi:

International Journal of Engineering and Applied Sciences 2015 Vol.7 Issue 1, pp.44-58

Belge Tipi:

Makale

Yayın Tarihi:

2/2015

Belge Dili:

Türkçe

Document ID (Org No.):

2000459523

Sıklık:

Üç Aylık

eISSN:

1309-0267

DOI:

https://doi.org/10.24107/ijeas.251245