Ut-battelle, Inc.

Phillip C Chesser

Brian K Post

Alex C Roschli

Randall F Lind

Lonnie J Love

Seokpum Kim

Michael C Borish

Andrew P Reis

Orlando Rios

Craig A Blue

William Carter

Zachary C Sims

Ryan Dehoff

Ahmed A Hassen

John M Lindahl

Kurt A Terrani

Christian M Petrie

Gregory D Dreifus

Vlastimil Kune

Bentley T Beard, Ii

Celeste Atkins

Benjamin R Betzler

Kevin G Field

Peter Wang

Matthew R Sallas

Natalie A Griffiths

Brennan T Smith

Brenda M Pracheil

Kristine Moody

Caroline Carter

Systems and methods for operating an aquatic robot. The methods comprise: autonomously propelling the aquatic robot through a body of water to a location where a water sample is to be obtained; and performing operations by the aquatic robot to autonomously collect the water sample, cause the water sample to flow through a filter that retains eDNA, lyses and releases the eDNA to a create a lysate, process the lysate to obtain a product for eDNA sequencing, generate eDNA sequencing data using the product, and communicate the eDNA sequencing data to a remote external device.

Remote autonomous environmental DNA sampler and analyzer

A nuclear fuel cladding with improved thermomechanical properties is provided. The nuclear fuel cladding includes a double-walled construction having inner and outer hexagonal sidewalls. The inner sidewall and the outer sidewall are spaced apart from each other to form a cooling channel therebetween, and the inner sidewall surrounds a nuclear fuel and is spaced apart from the nuclear fuel by a small gap. Helical fins extend into the cooling channel to interconnect the inner sidewall and the outer sidewall. Resilient fingers extend toward the nuclear fuel through the small gap to comply with variations in the size of the nuclear fuel due to fabrication tolerances as well as thermal expansion and swelling of the nuclear fuel, for example UO, when undergoing fission. The nuclear fuel cladding is formed according to an additive manufacturing process, for example laser powder bed fusion printing.

3D printed features on nuclear fuel cladding for optimized heat transfer

A print head for additive manufacturing with a material includes an accumulator comprising an elongated body with an open interior and an inside diameter. A slide tube is slidably mounted within the open interior of the elongated body. The slide tube has a sealing piston head hermetically sealing the open end within the elongated body to define a variable gas containment space. A pressurized gas is supplied to the gas containment space. A rotatable shaping nozzle with an opening for discharging material is provided. A positive displacement extruder delivers material from the accumulator to the nozzle assembly. The nozzle assembly can include a nozzle rotation drive for rotating the shaping nozzle about an axis of rotation. The nozzle opening can be aligned with the axis of rotation, and defines a discharge axis that can be perpendicular to the axis of rotation. A method of additive manufacturing is also disclosed.

Precision bead forming 3D print head for cementitious materials

Toolpath generation for additive manufacturing systems involves operations on polygonal contours derived from a model for additively manufacturing a structure. One aspect involves modifying or creating a model to allow parts to be printed without starting and stopping the printing equipment by generating continuous toolpaths or toolpaths having a reduced number of isolated paths. Another aspect involves modifying a slicing engine to generate a continuous toolpath or toolpath having a reduced number of isolated paths based on a representation of an object to be additively manufactured. Another aspect involves selectively placing the gaps at alternating positions among the sliced layers to create a zippering effect.

Continuous toolpaths for additive manufacturing

A system and method for improving additive manufacturing, including additive manufacturing toolpaths, is provided. The system and method includes a toolpath generator that obtains initial toolpaths of an object, identifies isolated paths in the toolpaths, and adds bridge connections between neighboring isolated paths in each layer to improve the toolpaths. The bridge connections facilitate the continuous and non-stop deposition of each layer according to improved toolpaths during additive manufacture, which can reduce total deposition time and improve the resultant additive manufacture.

System and method for additive manufacturing with toolpath bridges and resultant structure

A cable-driven additive manufacturing system includes an end effector configured for linear translation within a three-dimensional workspace, an aerial hoist suspending the end effector by at least one suspension cable, a plurality of base stations disposed below the aerial hoist, and control cables running from each of the base stations to the end effector.

Cable-driven additive manufacturing system

An additive manufacturing method that includes an extruder providing a supply of working material and a nozzle connected with respect to the extruder, the nozzle directing the working material to a deposit surface. A diverter valve is positioned between the extruder and the nozzle to direct the working material to an exhaust port away from the deposit surface under certain conditions.

Polymer exhaust for eliminating extruder transients

A methodfor generating and dispensing a powderedrelease agent during an additive manufacturing build is disclosed. A solid bodyof release agent material is ground insitu by a grinderand dispensed on a surface of the partto prevent adhesion of an adjacent layer of a base material. With the addition of the powderedrelease agent, a support structureis easily separated from the base materialwhen the partis complete, saving time and preventing the partfrom sustaining unintentional damage. Since no powderedrelease agent is actually loaded or stored in the apparatus, the potential for spillage, waste, inconsistent dispensing, inadvertent dispensing, and clumping due to humidity is eliminated.

Method for generating and dispensing a powdered release agent

A method and apparatus for additive manufacturing that includes a material guide for directing a supply of working material and a plurality of rollers for advancing the working material. An electromagnetic heater is provided to heat and deposit molten working material as a new supply of working material is forced through the material guide.

Electromagnetic print nozzle for direct-write additive manufacturing

An apparatusand a methodfor generating and dispensing a powderedrelease agent during an additive manufacturing build is disclosed. A solid bodyof release agent material is ground insitu by a grinderand dispensed on a surface of the partto prevent adhesion of an adjacent layer of a base material. With the addition of the powderedrelease agent, a support structureis easily separated from the base materialwhen the partis complete, saving time and preventing the partfrom sustaining unintentional damage. Since no powderedrelease agent is actually loaded or stored in the apparatus, the potential for spillage, waste, inconsistent dispensing, inadvertent dispensing, and clumping due to humidity is eliminated.

Apparatus for generating and dispensing a powdered release agent

Growing community of inventors

Knoxville, TN, United States of America

Phillip C Chesser