A system for additive metal manufacturing, including a deposition mechanism, a translation mechanism mounting the deposition mechanism to the working volume, and a stage. A method for additive metal manufacturing including: selectively depositing a material carrier within the working volume; removing an additive from the material carrier; and treating the resultant material.

A system for additive metal manufacturing, including a deposition mechanism, a translation mechanism mounting the deposition mechanism to the working volume, and a stage. A method for additive metal manufacturing including: selectively depositing a material carrier within the working volume; removing an additive from the material carrier; and treating the resultant material.

A method of fabricating an object by additive manufacturing is provided. The method includes irradiating a portion of powder in a powder bed, the irradiation creating an ion channel extending to the powder. The method also includes applying electrical energy to the ion channel, wherein the electrical energy is transmitted through the ion channel to the powder in the powder bed, and energy from the irradiation and the electrical energy each contribute to melting or sintering the portion of the powder in the powder bed.

A defect detection method includes: a step of irradiating an object with a pulsed laser beam to continuously generate ultrasonic waves in the object; and a step of detecting the presence or absence of an internal defect of the object on the basis of the presence or absence of resonance of the ultrasonic waves occurring between a surface of the object and the internal defect. In this method, the internal defect is detected on the basis of the presence or absence of resonance of the ultrasonic waves occurring between the surface of the object and the internal defect. The internal defect can be thus detected even when the internal defect is in a surface layer of the object. The detected internal defect is crack or void.

An embodiment of the present disclosure is directed to a method of additive manufacturing. The method comprises: i) forming a first layer, the first layer comprising at least one material chosen from an article material, a support structure material and a fracturable material; ii) forming an additional layer on the first layer, the additional layer comprising at least one material chosen from the article material, the support structure material and the fracturable material; and iii) repeating ii) one or more times to form a three-dimensional build comprising an article and at least one support structure attached to the article at an interface, the interface comprising the fracturable material formed during one or more of i), ii) or iii), the fracturable material being formed by exposing a print material with a gas reactant. A three-dimensional build is also disclosed.

An embodiment of the present disclosure is directed to a method of additive manufacturing. The method comprises: i) forming a first layer, the first layer comprising at least one material chosen from an article material, a support structure material and a fracturable material; ii) forming an additional layer on the first layer, the additional layer comprising at least one material chosen from the article material, the support structure material and the fracturable material; and iii) repeating ii) one or more times to form a three-dimensional build comprising an article and at least one support structure attached to the article at an interface, the interface comprising the fracturable material formed during one or more of i), ii) or iii), the fracturable material being formed by exposing a print material with a gas reactant. A three-dimensional build is also disclosed.

A torque bar manufactured by an additive manufacturing process is provided. The torque bar may include a torque bar body made of more than one metallic material. The torque bar may also include a geometry that comprises one or more voids and one or more webs, as well as a varied geometry in the direction of a longitudinal axis. The torque bars can exhibit characteristics, such as vibration damping, tuned stiffness, and tuned bending resistance in order to enhance dynamic stability.

A metallic glass part is provided. The metallic glass part includes an alloy core and a metallic glass shell surrounding the alloy core. The alloy core provides compressive force on the metallic glass shell at an interface between the alloy core and the metallic glass shell.

An additive manufacturing method includes cold spraying a powder onto a build area to create a densified powder layer. The method can include high speed machining the densified powder layer after cold spraying to create a smooth layer.

A method of manufacturing a bead assembly for a sphincter augmentation device includes initiating 3D printing of a unibody housing such that the unibody housing defines a first opening, a chamber, and a magnet chamber. The method further includes pausing the 3D printing process, inserting a magnet within the magnetic chamber, and then resuming 3D printing of the unibody housing to form a hermetic seal between the magnet chamber and an external surface of the unibody housing.