Cold dwell fatigue is a well-known problem in the titanium components of aircraft engines. The high temperature and low stress in-service conditions have been reported to give rise resistance through thermal-mechanical alleviation process. Here, tests at room component operating were performed on IMI834 alloy assess microstructural effects cold while eliminating effect chemical composition. rat...

We develop and analyze a minimal hydrodynamic model to understand why a drop climbs a smooth homogeneous incline that is harmonically vibrated at an angle different from the substrate normal [P. Brunet, J. Eggers, and R. D. Deegan, Phys. Rev. Lett. 99, 144501 (2007)]. We find that the vibration component orthogonal to the substrate induces a nonlinear (anharmonic) response in the drop shape. Th...

We have developed an interactive computer-aided design program that supports the mechanical design of devices fabricated in surface micro-machining processes. The program automates kinematic analysis via a novel configuration space computation code, performs real-time simulation and kinematic tolerance analysis, and supports kinematic synthesis. Designers can visualize system function under a r...

A B S T R A C T Recently, various methods have been proposed to assess the risk of rolling contact fatigue failure by Ekberg, Kabo and Andersson, and in particular, the Dang Van multiaxial fatigue criterion has been suggested in a simple approximate formulation. In this note, it is found that the approximation implied can be very significant; the calculation is improved and corrected, and focus...

The Paris Agreement rests on voluntary emissions reduction pledges but does not mandate that are sufficiently ambitious to collectively limit warming acceptable levels. Instead, it relies the “ratcheting mechanism” of Global Stocktake. As world falls further from trajectories compatible with Agreement, a safe and just future increased global effort. This Voices asks: what is needed for Stocktak...