Daniel R. Mumm

TL;DR: In this paper, the authors present relationships between the durability, the governing material properties and salient morphological features of thermal barrier coatings and show that the failure is ultimately connected to the large residual compression in the thermally grown oxide through its roles in amplifying imperfections near the interface.

TL;DR: In this article, a truss core panel with a tetragonal topology was fabricated from a beryllium-copper alloy using a rapid prototyping approach and investment casting, and measurements were performed on these panels in flexure, shear and compression.

TL;DR: The mechanism of compressive deformation that occurs in both closed and open cell Al alloys has been established by using X-ray computed tomography (CT) and surface strain mapping to determine the deformation modes and the cell morphologies that control the onset of yielding.

TL;DR: The mechanism responsible for the performance of a commercial thermal barrier system upon thermal cycling has been investigated in this paper, which comprises an electron beam physical vapor deposited (EB-PVD) yttria-stabilized zirconia thermal barrier coating (TBC) on a (Ni,Pt)Al bond coat.

TL;DR: In this paper, an impression test was used to explore the remnant toughness and the delamination characteristics of thermal barrier coatings (TBCs) after extended thermal exposure, and it was found that delamination occurs predominantly within the TGO and TBC, with small oxide domains remaining embedded in the bond coat.