Theoretical and experimental study on thermal barrier coating (TBC) uneven thickness detection using pulsed infrared thermography technology. (5th March 2017)

• Record Type: Journal Article
• Authors: Tang, Qingju; Liu, Junyan; Dai, Jingmin; Yu, Zongyan
• Is Part Of: Applied thermal engineering. Volume 114(2017:Mar.)
• Page Start: 770
• Page End: 775
• Publication Date: 2017-03-05
• Subjects: TBC -- Uneven thickness -- FEM -- Pulsed infrared thermography; Heat engineering -- Periodicals; Heating -- Equipment and supplies -- Periodicals; Periodicals; 621.40205
• DOI: 10.1016/j.applthermaleng.2016.12.032
• Languages: English
• ISSNs: 1359-4311

Abstract

Highlights: TBC uneven thickness detection has been carried out. A 3D heat conduction model was built, and FEM simulation was done. The relationship between test parameters and the contrast ratio was analyzed. Abstract: TBC uneven thickness detection has been carried out using pulsed infrared thermography technology. A three-dimensional heat conduction model of pulsed heat in the coating structure was built, based on which FEM simulation was done, and the influence of coating thickness, sampling frequency and sampling time was analyzed. Pulsed infrared thermography experiments were carried out to SiC coated superalloy specimens with uneven coating thickness prepared by plasma spraying method, and the relationship between parameters including impulse energy, sampling frequency, sampling time and the characterization parameter contrast ratio was analyzed.