公开(公告)号：WO2023038844A1

公开(公告)日：2023-03-16

申请号：PCT/US2022/042359

申请日：2022-09-01

Applicant: NUTECH VENTURES

Inventor： YAVARI, Reza ,  RAO, Prahalada ,  RIENSCHE, Alex ,  COLE, Kevin D.

IPC: B28B1/00 ,  B29C64/379 ,  G06F17/18 ,  B33Y50/02 ,  B29C64/10 ,  G01N29/44 ,  B29C67/04 ,  B29C35/00

Abstract: Described herein are systems and methods for detecting flaws during an additive manufacturing (AM) process. A method can include accessing, by a computer, simulation results of a computer-modelled part representing a physical part to be formed using the AM process. The simulation includes a thermal history model for the computer-modelled part. During run-time formation of the physical part, the method includes receiving, from sensor devices, real-time sensor data of temperature values for nodes within regions of the physical part as each region is formed. The method also includes determining, for each region as the region is formed in the physical part, a deviation between the real-time sensor data of temperature values for nodes within the region and temperature values of the thermal history model for the computer-modelled part, and identifying flaws in the physical part based on determining that the deviation satisfies criteria indicating a flaw.

公开(公告)号：WO2023076636A1

公开(公告)日：2023-05-04

申请号：PCT/US2022/048296

申请日：2022-10-28

Applicant: NUTECH VENTURES

Inventor： COLE, Kevin ,  RIENSCHE, Alex ,  RAO, Prahalada

IPC: G06F30/23 ,  B33Y50/02 ,  G06F119/08

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for an additive manufacturing heat transfer simulation process. The process includes converting a model of an object into a node representation of the object and generating a network graph of the object based on the node representation. For each block of nodes in the node representation the process includes: applying a simulated heat to the block of nodes by multiple causation functions, performing an energy balance of heat flow into and out of the node to determine the energy stored in the node, and estimating a diffusion of heat to other nodes using physics based edge weights between nodes in the network graph. The process includes generating a representation of an estimated heat distribution within the object.