Rolls-royce Corporation

Mark E Bartolomeo

Edward Claude Rice

Robert Anthony Ress, Jr

Jonathan M Rivers

Jonathan Acker

Robert F Proctor

Nathan J Cooper

Gangshu Shen

Tony R McKenney

Philip Michael Bastnagel

Gregory Blake

Maxwell Layman

Eugene Sun

Brian Drier

Randal L Renback

Christopher I Hamilton

Stephanie M Janicek

Eric Handa

Aaron Martin

Robert Ress Iii

Stephanie Janicek

A mechanical component that includes a core substrate and a nano-crystalline coating on at least a portion of the core substrate. The core substrate defines a resonance damping cavity. The resonance damping cavity is configured to damp a vibration in the component at a selected frequency.

High strength vibration damping components

In some examples, a cone clutch assembly includes an inner cone member rotationally coupled to a first shaft, the inner cone member defining a first friction surface; and an outer cone member rotationally coupled to a second shaft, the outer cone member defining a second friction surface opposing the first friction surface. The inner cone member and outer cone member may be selectively engaged and disengaged from another. The inner cone member and/or the outer cone member may include a first metallic layer and a second metallic layer separated by an open structure core. The open structure core is configured to allow flow of a fluid between the first metallic layer and the second metallic layer to remove heat from the at least one of the inner cone member or the outer cone member.

Cone clutch system

An article that includes a structured substrate having a macro-porous structure that defines a plurality of pores, and a metallic nano-crystalline coating on at least a portion of the structured substrate, where the metallic nano-crystalline coating defines an average grain size less than about 20 nanometers.

High strength aerospace components

An example system may include a computing device including a finite element analysis module solving for a finite element model representing a component including a metal or an alloy and including a plurality of respective elements. The finite element analysis module may solve a respective stress Sand a respective temperature Tat each respective element during the predetermined cooling operating. The finite element analysis module may determine a respective impact energy Ebased on the temperature Tand cooling rate, using a predetermined cooling rate-dependent energy relationship that relates a temperature of the metal or the alloy to an impact energy, determine a respective weakness index W=[A&#xd7;E/S](A being a predetermined constant, n being a predetermined real number greater than or equal to 1), and identify a respective element having a minimum weakness index less than a predetermined weakness index threshold as a cracking-prone element.

Predicting cracking in cooled metal or alloy components

A shaft coupling arrangement and a corresponding method for coupling shafts are disclosed herein. The shaft coupling arrangement includes an input shaft operable to rotate about a first axis. The shaft coupling arrangement also includes an output shaft operable to rotate about a second axis. The shaft coupling arrangement also includes a gearing arrangement operable to engage the input and output shafts together for rotation in the same angular direction at different angular speeds. In one embodiment of the invention, the gearing arrangement includes a plurality of nested bevel gears. In another embodiment of the invention, the gearing arrangement can include a single layshaft.

Shaft coupling arrangement

Growing community of inventors

Brownsburg, IN, United States of America

Mark E Bartolomeo