Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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 St and a respective temperature Tt at each respective element during the predetermined cooling operating. The finite element analysis module may determine a respective impact energy ET based on the temperature Tt and 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 Wt=[A×ET/St]n (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.

Abstract: 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.

Abstract: 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 St and a respective temperature Tt at each respective element during the predetermined cooling operating. The finite element analysis module may determine a respective impact energy ET based on the temperature Tt and 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 Wt=[A×ET/St]n (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.

Abstract: An article that includes a polymer-based substrate; and a metallic nano-crystalline coating on at least a portion of the polymer-based substrate, where the metallic nano-crystalline coating defines an average grain size less than about 20 nanometers, where the portion of the polymer-based substrate has a first Young's modulus and the metallic nano-crystalline coating has a second Young's modulus, where the first Young's modulus is at least five times less than the second Young's modulus.

Abstract: 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.

Abstract: 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.

Abstract: A holographic method for determining rotational effects upon either gear of gears (1, 2) of a gear set having respective mutually orthogonal rotational axis (C.sub.1, C.sub.2). Particularly, a holographic recording medium or element 12 is secured to gear (1) so that is rotates in synchronization therewith about axis (C.sub.1). Gear (2) is illuminated by a pulsed collimated light beam (L) emitted from a source (14) such as a laser. Beam (L) is reflected from gear (2) as object beam (0) substantially parallel to axis C.sub.2 and means such as a semi-reflective mirror 16 having a slit (18) is provided for directing a reference beam (R) and object beam (0) towards element (12). Development of element (12) after exposing it to beams (R and 0) at two different rotational conditions provides interference lines (f.sub.1, f.sub.2) enabling a viewer of the holographic image of gear 2 to determine the effect of rotation thereupon.

Abstract: Disclosed is a stroboscopic method of determining the quality of meshing between respective teeth of two or more gears. By way of example, a method is disclosed by which a standard is established by directing an adjustable pulse rate light beam (L) from a stroboscopic light source (18) towards a region (R) generally encompassing the location of meshed engagement between respective teeth (6; 8) of a pair of gears (2, 4) rotating at a predetermined rpm that are selected on the basis that they possess degree of mesh engagement quality desired for such gear pairs.