Hotspot formation in Gas Turbine combustor tiles can reduce their life drastically, so they require considerable attention to improve durability. In the present article, an innovative method is proposed to increase the thickness of Thermal Barrier Coating locally in the hotspot regions to enhance thermal insulation and life capabilities of combustor tiles. In this method a pre-dent is made on the substrate in the distress regions which leads to the addition of extra Thermal Barrier Coating thickness. Experimental validation and thermo-mechanical assessments are carried out numerically using Rolls-Royce in house Finite Element codes. The result shows, through thickness temperature reduction by 13% which leads to cooling efficiency improvement by 3%. It enabled an improved low cycle fatigue life by four times and reduced the component’s overall weight by 3%. Further this method reduced the coolant air which can be diverted to core combustion to help reduce smoke emissions. Usage of this method requires minimum cost addition to the manufacturing process with a benefit on the weight, performance, and durability of the combustors.

燃气轮机燃烧室砖中的热点形成会大大缩短其寿命，因此需要大量注意以提高耐用性。在本文中，提出了一种创新的方法来增加热点区域局部的热障涂层的厚度，以增强燃烧室砖的隔热和使用寿命。在该方法中，在基板上的遇险区域中产生预凹痕，这导致增加了额外的热障涂层厚度。实验验证和热机械评估是使用内部有限元代码使用Rolls-Royce进行的。结果表明，通过降低厚度温度13％，可将冷却效率提高3％。它使低周疲劳寿命提高了四倍，并使组件的总重量减少了3％。此外，该方法减少了可转移到堆芯燃烧的冷却剂空气，以帮助减少烟尘排放。使用这种方法需要在制造过程中增加最少的成本，并有利于燃烧器的重量，性能和耐用性。