JP2024037833A - ビルド面のグリッド領域における放射熱エネルギー密度の測定 - Google Patents
ビルド面のグリッド領域における放射熱エネルギー密度の測定 Download PDFInfo
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Abstract
Description
本出願は、それぞれ「Systems And Methods For Measuring Energy Input During An Additive Manufacturing Operation」と題する、2017年8月1日に出願された米国仮特許出願第62/540,016号、2018年2月21日に出願された第62/633,487号、および2018年3月15日に出願された62/643,457号の優先権を主張し、その開示は、その全体があらゆる目的のために参照により本明細書に組み込まれる。
統合されたフォトダイオード電圧418を使用して、TEDi計算のpdoniを決定できる。
ここで、Vは各スキャンレットに対して決定された平均電圧、Nはサンプル数である。図6Dでは、20サンプルセグメントの平均電圧は、データの幅が固定されているため、信号の積分に相当する。
スキャンの開始と終了のx座標とy座標は指定され得るか、1つまたは複数の直接センサ測定値に基づいて決定され得る。
TEDは、レーザパワー、レーザ速度、ハッチ間隔など、ユーザ定義のすべてのレーザ粉末床融合プロセスパラメータに敏感である。TED値は、ベースラインデータセットとのIPQM比較を使用した分析に使用され得る。結果のIPQMは、レーザスキャンごとに決定され得、点群を使用してグラフまたは3次元で表示され得る。図4Gは、例示的なグラフを示している。図4Hは、例示的な点群を示している。
リコータアームショートフィードのTED分析
熱エネルギー密度とグローバルエネルギー密度
PTOTAL LASER POWER=POPTICAL LOSSES AT THE LASER+PABSORPTION BY CHAMBER GAS+PREFLECTION+PPARTICLE AND PLUME INTERACTIONS+PPOWER NEEDED TO SUSTAIN MELT POOL+PCONDUCTION LOSSES+PRADIATION LOSSES+PCONVECTION LOSSES+PVAPORIZATION LOSSES 式(13)
VVOLTAGE USED BY TED={PRADIATED-PVIEW FACTOR-POPTICAL LOSSES AT RADIATED WAVELENGTHS-PSENSOR LOSS FACTOR}*(SENSOR SCALING FACTOR)式(15)
GED=(BEAM POWER)/{(TRAVEL SPEED)*(HATCH SPACING)} 式(16)
Claims (1)
- ビルド面上に粉末金属の層を堆積させるステップと、
各ビルド面の少なくとも一部を複数のグリッド領域に分割するステップであって、各グリッド領域はそれぞれのグリッド面積を有する、ステップと、
前記粉末金属の層を融合させるためのエネルギー源を使用して、各グリッド領域にわたる複数のスキャンを生成するステップと、
各グリッド領域のための前記複数のスキャンのそれぞれが行われている間に、各グリッド領域から放射されたエネルギー量を決定するステップと、
各グリッド領域の熱エネルギー密度を決定するステップと、
各グリッド領域の前記熱エネルギー密度を基準値と比較し、潜在的に欠陥のあるグリッド領域を特定するステップと、
を含む、コンポーネントを製造するための付加製造方法。
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201762540016P | 2017-08-01 | 2017-08-01 | |
US62/540,016 | 2017-08-01 | ||
US201862633487P | 2018-02-21 | 2018-02-21 | |
US62/633,487 | 2018-02-21 | ||
US201862643457P | 2018-03-15 | 2018-03-15 | |
US62/643,457 | 2018-03-15 | ||
JP2020529102A JP7024981B2 (ja) | 2017-08-01 | 2018-08-01 | 付加製造動作中の放射熱エネルギーを測定するためのシステムおよび方法 |
PCT/US2018/044884 WO2019028184A1 (en) | 2017-08-01 | 2018-08-01 | SYSTEMS AND METHODS FOR RADIANT THERMAL ENERGY MEASUREMENT DURING ADDITIVE MANUFACTURING OPERATION |
JP2022015272A JP7408066B2 (ja) | 2017-08-01 | 2022-02-02 | ビルド面のグリッド領域における放射熱エネルギー密度の測定 |
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JP2022015272A Division JP7408066B2 (ja) | 2017-08-01 | 2022-02-02 | ビルド面のグリッド領域における放射熱エネルギー密度の測定 |
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JP2024037833A true JP2024037833A (ja) | 2024-03-19 |
JP2024037833A5 JP2024037833A5 (ja) | 2024-04-12 |
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CN111315531B (zh) | 2022-09-30 |
CN111315531A (zh) | 2020-06-19 |
DE112018001597T5 (de) | 2019-12-12 |
JP2020530070A (ja) | 2020-10-15 |
EP3548218A4 (en) | 2019-12-04 |
DE112018001597B4 (de) | 2021-06-02 |
US11390035B2 (en) | 2022-07-19 |
US20220388249A1 (en) | 2022-12-08 |
KR20200051594A (ko) | 2020-05-13 |
JP7408066B2 (ja) | 2024-01-05 |
US10479020B2 (en) | 2019-11-19 |
US20190039318A1 (en) | 2019-02-07 |
US11938560B2 (en) | 2024-03-26 |
JP7024981B2 (ja) | 2022-02-24 |
WO2019028184A1 (en) | 2019-02-07 |
US20200101671A1 (en) | 2020-04-02 |
JP2022081477A (ja) | 2022-05-31 |
KR102340573B1 (ko) | 2021-12-21 |
EP3548218A1 (en) | 2019-10-09 |
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