Abstract: Disclosed is a wearable inertial sensors (WIS) system and methods for real-time simultaneous tri-planar motion capture of the upper extremity (UE). The sensors simultaneously capture in the frontal, sagittal, and horizontal planes UE range of motion (ROM), which is critical to assess an individual's movement limitations and determine appropriate rehabilitative treatments. Off-the-shelf sensors and microcontrollers are used to develop the WIS system, which wirelessly streams real-time joint orientation for UE ROM measurement. Key developments include: (i) two novel approaches, using earth's gravity (EG approach) and magnetic field (EGM approach) as references, to correct misalignments in the orientation between the sensor and its housing to minimize measurement errors; (ii) implementation of the joint coordinate system (JCS)-based method for tri-planar ROM measurements for clinical use; and (iii) an in-situ guided mounting technique for accurate sensor placement and alignment on human body.

Abstract: A joining method includes performing a first heat treatment step on a first superalloy workpiece and a second superalloy workpiece wherein at least one of the first and second superalloy workpieces include a gamma matrix phase and a gamma-prime precipitate phase. The first and second superalloy workpieces are joined using a solid state joining process, subjected to a post-weld stress relief operation and a final aging heat treatment.

Abstract: A joining method includes performing a first heat treatment step on a first superalloy workpiece and a second superalloy workpiece wherein at least one of the first and second superalloy workpieces include a gamma matrix phase and a gamma-prime precipitate phase. The first and second superalloy workpieces are joined using a solid state joining process, subjected to a post-weld stress relief operation and a final aging heat treatment.

Abstract: A joining method includes performing a first heat treatment step on a first superalloy workpiece and a second superalloy workpiece wherein at least one of the first and second superalloy workpieces include a gamma matrix phase and a gamma-prime precipitate phase. The first and second superalloy workpieces are joined using a solid state joining process, subjected to a post-weld stress relief operation and a final aging heat treatment.

Abstract: A joining method includes performing a first heat treatment step on a first superalloy workpiece and a second superalloy workpiece wherein at least one of the first and second superalloy workpieces include a gamma matrix phase and a gamma-prime precipitate phase. The first and second superalloy workpieces are joined using a solid state joining process, subjected to a post-weld stress relief operation and a final aging heat treatment.

Abstract: A method of forming a hybrid component having an axis of rotation includes forming a first substrate having a first average grain size, forming a second substrate having a second average grain size different from the first average grain size, positioning an interlayer on one of the first and second substrates, positioning a portion of the first substrate adjacent a portion of the second substrate such that the interlayer extends between the portion of the first substrate and the portion of the second substrate, heating the first and second substrates and the interlayer at a temperature below the melting points of the first and second substrates to melt the interlayer, and isothermally solidifying the interlayer to form a solid-state joint between the portions of the first and second substrates.

Abstract: A method of forming a hybrid component having an axis of rotation includes forming a first substrate having a first interface surface and a first average grain size, forming a second substrate having a second interface surface and a second average grain size different from the first average grain size, and inertia welding the first and second substrates at a junction of the first and second interface surfaces to form a solid-state joint between the first and second substrates.

Abstract: A nickel braze alloy may include less than about 2.0 wt. % aluminum, about 18.0-23.0 wt. % cobalt, about 12.0-15.0 wt. % chromium, about 3.8-4.5 wt. % molybdenum, about 0.8-1.5 wt. % niobium, about 1.8-3.0 wt. % tantalum, less than about 2.0 wt. % titanium, about 2.0-3.5 wt. % tungsten, about 0.8-1.2 wt. % boron, about 0.02-0.10 wt. % carbon, about 0.03-0.06 wt. % zirconium, and a balance of nickel and minor amounts of impurities.

Abstract: A direct metal laser sintered material including a substrate formed from a laser sintering process, the substrate having at least one surface, and a cladding material brazed onto at least a portion of the surface.