公开(公告)号：US10821674B2

公开(公告)日：2020-11-03

申请号：US16310138

申请日：2017-06-09

申请人： EMPA EIDGENÖSSISCHE MATERIALPRÜFUNGS-UND FORSCHUNGSANSTALT

发明人： Kilian Wasmer ,  Sergey Shevchik ,  Farzad Vakili Farahani ,  Georgios Violakis ,  Sébastien Vaucher

IPC分类号： B29C64/393 ,  B22F3/105 ,  B29C64/153 ,  G01D5/353 ,  G01N29/12 ,  G01N29/14 ,  G01N29/24 ,  B33Y30/00

摘要： Use of a sensor read out system with at least one fiber optical sensor, which is connected via at least one signal line to a processing unit as part of an additive manufacturing setup, for in situ and real time quality control of a running additive manufacturing process. Acoustic emission is measured via the at least one fiber optical sensor in form of fibers with Bragg grating, fibre interferometer or Fabry-Perot structure, followed by a signal transfer and an analysis of the measured signals in the processing unit, estimation of the sintering or melting process quality due to correlation between sintering or melting quality and measured acoustic emission signals and subsequent adaption of ion and electron beams, microwave or laser sintering or melting parameters of a ion and electron beams, microwave or laser electronics of the additive manufacturing setup in real times via a feedback loop as a result of the measured acoustic emission signals after interpretation with an algorithmic framework in the processing unit.

公开(公告)号：US11534979B2

公开(公告)日：2022-12-27

申请号：US17081335

申请日：2020-10-27

申请人： EMPA EIDGENÖSSISCHE MATERIALPRÜFUNGS- UND FORSCHUNGSANSTALT

发明人： Kilian Wasmer ,  Sergey Shevchik ,  Farzad Vakili Farahani ,  Georgios Violakis ,  Sébastien Vaucher

IPC分类号： B29C64/393 ,  B22F3/105 ,  B29C64/153 ,  G01D5/353 ,  G01N29/12 ,  G01N29/14 ,  G01N29/24 ,  B22F10/20 ,  B22F10/00 ,  B33Y30/00 ,  B22F10/30 ,  B22F10/10

摘要： Use of a sensor read out system with at least one fiber optical sensor, which is connected via at least one signal line to a processing unit as part of an additive manufacturing setup, for in situ and real time quality control of a running additive manufacturing process. Acoustic emission is measured via the at least one fiber optical sensor in form of fibers with Bragg grating, fibre interferometer or Fabry-Perot structure, followed by a signal transfer and an analysis of the measured signals in the processing unit, estimation of the sintering or melting process quality due to correlation between sintering or melting quality and measured acoustic emission signals and subsequent adaption of ion and electron beams, microwave or laser sintering or melting parameters of a ion and electron beams, microwave or laser electronics of the additive manufacturing setup in real times via a feedback loop as a result of the measured acoustic emission signals after interpretation with an algorithmic framework in the processing unit.