Melt pool monitoring system and method for detecting errors in additive manufacturing process

A technology of additive manufacturing and monitoring system, applied in processing and manufacturing, manufacturing tools, additive manufacturing, etc., can solve problems such as delay, inability to effectively identify quality problems of finished parts, increased cost of parts scrapped materials, complex identification and processing, etc.

Active Publication Date: 2020-05-19
GENERAL ELECTRIC CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most melt pool monitoring systems do data analysis after construction is complete, or are otherwise complex and delay in identifying processing issues
Additionally, such melt pool monitoring systems are often ineffective at identifying process failures that lead to finished part quality issues, part scrap, increased material costs, and excessive machine downtime

Method used

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  • Melt pool monitoring system and method for detecting errors in additive manufacturing process
  • Melt pool monitoring system and method for detecting errors in additive manufacturing process
  • Melt pool monitoring system and method for detecting errors in additive manufacturing process

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Embodiment Construction

[0022] Reference will now be made in detail to embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and changes as come within the scope of the appended claims and their equivalents.

[0023] As used herein, the terms "first," "second," and "third" may be used interchangeably to distinguish one element from another, and are not intended to denote the position or importance of individual elements. Additionally, as used...

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Abstract

A system (100) and method (300) of monitoring a powder (142)-bed additive manufacturing process is provided where a layer of additive powder (142) is fused using an energy source (120) and electromagnetic emission signals are measured by a melt pool monitoring system (200) to monitor the print process. The measured emission signals (250) are analyzed to identify outlier emissions (254) and clusters of outliers are identified by assessing the spatial proximity of the outlier emissions (254), e.g., using clustering algorithms, spatial control charts, etc. An alert may be provided or a process adjustment may be made when a cluster is identified or when a magnitude of a cluster exceeds a predetermined cluster threshold.

Description

[0001] priority information [0002] The applicant requests the U.S. patent application titled "Melt Pool Monitoring System and Method for Detecting Errors in an Additive Manufacturing Process" filed on November 9, 2018 Priority to Provisional Patent Application Serial No. 62 / 757,849, the disclosure of which is incorporated herein by reference. technical field [0003] The present disclosure relates generally to additive manufacturing machines, or, more particularly, to error detection systems and methods for additive manufacturing machines. Background technique [0004] In contrast to subtractive manufacturing methods, additive manufacturing (AM) processes typically involve the build-up of one or more materials to make net-shape or near-net-shape (NNS) objects. Although "Additive Manufacturing" is an industry standard term (ISO / ASTM52900), AM encompasses a variety of manufacturing and prototyping techniques known by various names, including freeform manufacturing, 3D print...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105G01R29/08B28B1/00B29C64/393B33Y10/00B33Y40/00B33Y50/02
CPCG01R29/0871B28B1/001B29C64/393B33Y10/00B33Y40/00B33Y50/02B22F10/00B22F12/90B22F12/49B22F10/28B22F12/60B22F10/368B22F10/322B29C64/153B33Y30/00Y02P10/25B23K26/342B23K26/702B23K26/032B23K26/034B23K26/1464B23K31/003
Inventor 斯科特·阿伦·戈尔德托马斯·格拉哈姆·斯皮尔斯阿杰·库马尔·阿南德
Owner GENERAL ELECTRIC CO
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