JP2013509348A - 薄い厚さの熱構造複合材料部品および製造方法 - Google Patents
薄い厚さの熱構造複合材料部品および製造方法 Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
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Abstract
【解決手段】本発明は、少なくとも部分的に薄いマトリックスαによって密度化されたカーボンまたはセラミックで作られたファイバーを有しているファイバー強化材を有している熱構造複合材料部品に関し、その部品の厚さは2mm未満または1mm未満でさえあり、ファイバー強化材は、少なくとも200テックスにあるカウントを有している展延されたスレッドで作られた単一の厚さの多層織物で作られており、ファイバー体積パーセントは25%ないし45%の間にあり、多層織物層の数とその部品のmmでの厚さの比は4以上である。
Description
前記部品の厚さは2mm未満であり、
ファイバー強化材は、重さが少なくとも200テックスである展延された糸から構成された単一の厚さの多層織物によって構成されており、
ファイバー体積比は25%ないし45%にあり、
前記多層織物の層の数と前記部品のミリメートルでの厚さの比は四以上である部品によって達成される。
その方法では、厚さが2mm未満であるプレフォームの少なくとも一部を作るために、
重さが200テックス以上である糸を有している多層織物を作るステップと、
多層織物の厚さを低減するように糸を展延する作業に前記織物を供するステップと、
前記展延された多層織物から前記プレフォーム部を作るステップがおこなわれ、前記プレフォーム部の厚さは、四以上の前記織物の層の数と前記プレフォーム部のミリメートルでの厚さの比を示す単一の厚さの展延された織物によって構成されており、
織りの間の前記多層織物のスレッドカウントは、前記ファイバープレフォームにおいて25%ないし45%にある体積ファイバー比を得るように選択される。
特に文献FR2 401 888とUS5 246 736とUS5 965 266とUS6 068 730とUS6 291 058に説明されている。
CMC材料の薄いプレートは以下のように作られた。
例1と同じ糸を使用して多層織物が作られた。織物の厚さを約1mmに制限するために、織りは、縦糸の三つの層と緯糸の二つの層を使用しておこなわれ、したがって織物の層の数は3に等しかった。図3に示される緯糸平面をもつ多重サテンタイプ織りが使用された。他の緯糸平面はそこから、緯糸方向の連続的なずれによって推定される。多層織物のファイバー比は約40%だった。
例1と同様の糸を使用して多重プレーンタイプ織りを有している多層織物が作られた。縦および緯糸方向のスレッドカウントは2.5×2.5だった。層の数は十、すなわち縦糸の十の層C’1ないしC’10と緯糸T’1ないしT’10の十の層だった。
Claims (10)
- マトリックスによって高密化されたカーボンまたはセラミックファイバー強化材を備えている熱構造複合材料で作られた部品であり、前記部品の少なくとも一部において、
前記部品の厚さは2mm未満であり、
ファイバー強化材は、重さが少なくとも200テックスである展延された糸で構成された単一の厚さの多層織物によって構成されており、
ファイバー体積比は25%ないし45%にあり、
前記多層織物の層の数と前記部品のミリメートルでの厚さの比は四以上であることを特徴とする部品。 - 少なくとも前記部品の前記一部において、その厚さが1mm未満であることを特徴とする請求項1に記載の部品。
- 前記多層織物の層の数が三以上であることを特徴とする請求項1または請求項2に記載の部品。
- 前記多層織物が、多重プレーン、多重サージまたは多重サテンタイプ織りを有していることを特徴とする請求項1ないし3のいずれか一つに記載の部品。
- 前記マトリックスが、少なくとも部分的にセラミックで作られていることを特徴とする請求項1ないし4のいずれか一つに記載の部品。
- ガスタービン航空エンジンの後部胴体部品の構成請求項5に記載の部品。
- ロケットエンジンノズル排気コーンの少なくとも一部を構成している請求項1ないし5のいずれか一つに記載の部品。
- カーボンまたはセラミックファイバーのプレフォームを作ることと前記プレフォームをマトリックスで高密化することを有している熱構造複合材料部品を製造する方法であり、2mm未満の厚さを有している前記プレフォームの少なくとも一部を作るために、
重さが200テックス以上である糸を有している多層織物を作るステップと、
前記多層織物の厚さを低減するように糸を展延する作業に前記織物を供するステップと、
前記展延された多層織物から前記プレフォーム部を作るステップがおこなわれ、前記プレフォーム部の厚さは、四以上の前記織物の層の数と前記プレフォーム部のミリメートルでの厚さの比を示す単一の厚さの展延された織物によって構成されており、
織りの間の前記多層織物のスレッドカウントは、前記ファイバープレフォーム部において25%ないし45%にあるように体積ファイバー比を得るように選択されることを特徴とする方法。 - 層の数が三以上である多層織物が使用されることを特徴とする請求項8に記載の方法。
- 多重プレーン、多重サージまたは多重サテンタイプ織りで多層織りがおこなわれることを特徴とする請求項8または請求項9に記載の方法。
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