“…Attendant changes in properties, namely the elastic properties, will play an important role in determining the performance and durability of the coating but are difficult to measure and remain to be elucidated. Moreover, microstructural variations across the thickness of the TBC could lead to a positiondependent modulus and the feathery nature of the columns have led some investigators to report that the in-plane modulus, E p , depends on the imposed in-plane strain, e xx [2][3][4]. Here, the proposed microbending experiments are employed to characterize as-deposited coatings, but investigations involving microstructural evolution and other second-order effects are also practicable.…”