Reference number : GC-2017-Q3-00550, amendment number : , agreement type : G, recipient legal name : Yue, Stephen (McGill University)|Yue, Stephen (Université McGill), recipient country : CA, recipient province : nan, recipient city : Quebec|Québec, recipient postal code : nan, program name english : Engage Grants for universities, program name french : Subventions d'engagement partenarial pour les universités, program purpose english : Powder Bed Fusion is a Additive Manufacturing technique based on the repeated spreading and melting of thin_x000D_
layers of powder. As the technology evolves from the research to production, the importance of quality control_x000D_
of finished parts increases. The relationships between powder feedstock, spreading dynamics and defect_x000D_
formation are still not fully understood, but the current understanding is that that powder voids formed after_x000D_
spreading can seed defects in the finished part. Thus, high quality powders must have properties which enable_x000D_
the spreading of dense, homogenous layers, free of voids and segregation. These properties must be maintained_x000D_
throughout the powder lifetime, which can include recycling, handling and extended storage periods. Despite_x000D_
the importance of powder spreadability, no universal description or standard for quantitative spreadability_x000D_
exists. Currently, AM powder is characterized by tests which capture some, but not all, of the spreading-related_x000D_
properties, while new AM-specific standards are being proposed._x000D_
This proposal concerns a joint investigation between McGill University and Advanced Powders and_x000D_
Coatings(AP&C) to understand the strengths and weaknesses of characterizing powder spreadability using the_x000D_
Freeman Technology FT4 powder rheometer. Compared to conventional, gravity-based measurements like the_x000D_
Hall flow meter, the data generated from the FT4 should should be more representative of spreading-related_x000D_
properties because of the ability to apply precise compressive, tensile and shear forces to the powder bulk._x000D_
Whether FT4 test parameters can be matched to specific powder spreading techniques will be determined over_x000D_
the course of this project. If the FT4 can accurately resolve properties related to spreading, the instrument will_x000D_
be used to evaluate new powder production techniques as well as support the quality management systems of_x000D_
AP&C and their customers., program purpose french : Powder Bed Fusion is a Additive Manufacturing technique based on the repeated spreading and melting of thin_x000D_
layers of powder. As the technology evolves from the research to production, the importance of quality control_x000D_
of finished parts increases. The relationships between powder feedstock, spreading dynamics and defect_x000D_
formation are still not fully understood, but the current understanding is that that powder voids formed after_x000D_
spreading can seed defects in the finished part. Thus, high quality powders must have properties which enable_x000D_
the spreading of dense, homogenous layers, free of voids and segregation. These properties must be maintained_x000D_
throughout the powder lifetime, which can include recycling, handling and extended storage periods. Despite_x000D_
the importance of powder spreadability, no universal description or standard for quantitative spreadability_x000D_
exists. Currently, AM powder is characterized by tests which capture some, but not all, of the spreading-related_x000D_
properties, while new AM-specific standards are being proposed._x000D_
This proposal concerns a joint investigation between McGill University and Advanced Powders and_x000D_
Coatings(AP&C) to understand the strengths and weaknesses of characterizing powder spreadability using the_x000D_
Freeman Technology FT4 powder rheometer. Compared to conventional, gravity-based measurements like the_x000D_
Hall flow meter, the data generated from the FT4 should should be more representative of spreading-related_x000D_
properties because of the ability to apply precise compressive, tensile and shear forces to the powder bulk._x000D_
Whether FT4 test parameters can be matched to specific powder spreading techniques will be determined over_x000D_
the course of this project. If the FT4 can accurately resolve properties related to spreading, the instrument will_x000D_
be used to evaluate new powder production techniques as well as support the quality management systems of_x000D_
AP&C and their customers., agreement title english : Characterization of additive manufacturing metal powders using the FT4 powder rheometer, agreement title french : Characterization of additive manufacturing metal powders using the FT4 powder rheometer, agreement number : EGP, agreement value : 25000.0, agreement start date : 2017-10-18, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada