JP5588645B2 - 横断面に肉厚部位を有する複合材料構造物製造用治具 - Google Patents
横断面に肉厚部位を有する複合材料構造物製造用治具 Download PDFInfo
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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Description
[複合材料構造物製造用治具としてのブラダの基本構成]
図1(a)・(b)は本実施の形態に係る複合材料構造物製造用治具としてのブラダの外観構成の一例を示す模式的斜視図であり、図2(a)は、図1に示すブラダの長手方向の断面を示す断面図であり、図2(b)は、図1に示すブラダの本体部の形状を示す部分斜視図であり、図2(c)は、図1に示すブラダの一方の端部に取り付けられている末端金具12の形状を示す斜視図である。なお、以下の説明では、ブラダの長手方向を「縦方向」と称し、当該縦方向に直交する方向を「横方向」と称する。また、ブラダの縦方向の断面を「縦断面」と称し、ブラダの横方向の断面を「横断面」と称する。
次に、本実施の形態に係るブラダ10の本体部11について、図1(a)・(b)、図2(a)〜(c)、並びに図3(a)および(b)を参照して説明する。図3(a)は、図2(a)および(b)に示す本体部11の横断面の構成を示す模式的断面図であり、図3(b)は、図3(a)に示す本体部11の横断面のうち、露出壁部11bの一方の側縁部近傍を示す部分断面図であり、図3(c)は、図3(a)に示す本体部11の横断面のうち、傾斜壁部11cのみを示す部分断面図である。
次に、本体部11を構成する管状部14、被覆フィルム15、および繊維補強材16に用いられる材質について具体的に説明するとともに、本体部11の製造方法についても具体的に説明し、さらにブラダ10の製造方法についても説明する。
本実施の形態に係るブラダ10は、スティフンドパネルを利用した各種の複合材料構造物の製造において、骨格部材のスティフナに含まれるハット型ストリンガの治具として好適に用いられる。この点について、図6(a)および(b)、図7、並びに図8を参照して説明する。図6(a)および(b)は、ハット型ストリンガの構成の一例を示す部分斜視図である。図7は、ハット型ストリンガの溝状部にブラダ10を内挿させた状態の構造物骨格の外周にプリプレグを積層する工程を、各構成要素の断面図として示す模式図である。図8は、積層後のプリプレグをオートクレーブで硬化させるときのブラダ、プリプレグおよびマンドレルの位置関係を断面図として示す模式図である。
荷重試験機としてオートグラフ((株)島津製作所製、製品番号:AG−5000E)を用いた。オートグラフの上側ベースには、取付治具を介してブラダ10を押える押圧具を取り付け、下側ベースには、ブラダ10を挿入する溝が形成されたブラダセット治具を取り付けた。
接触壁部11aの幅が22.9mm、露出壁部11bの幅が71.5mm、高さHが31mm、全ての壁部の厚みが3mmであり、肉厚縁部11dとして、幅Dwが25.75mm、最大厚みDhが15.5mm、第一内曲面がR8mm、第二内曲面がR35mmとなる形状のものが形成された本体部11(図3(a)参照)を備える構成のブラダ10について、露出壁部11bの凹み変形が3mmとなるときの面圧と荷重とを測定した。これは、φ100×400Lの積層ローラで490kPa(75PSI,5kg重/cm2 )の負荷が加えられたとき、露出壁部11bの凹み変形が3mm以内であれば、プリプレグ30の積層に問題が起きないと見なすことができるためである。なお、前記本体部11では、露出壁部11bの平坦な中央部位11eが20mmとなる。
肉厚縁部が形成されていない構成の本体部を備えるブラダを用いて、実施例1と同様にして、面圧および荷重を測定した。その結果、露出壁部11bが3mm凹み変形したときの荷重は12.2Nであり、そのときの応力は39.2kPa(0.4kgf/cm2 )であった。
実施例1で圧縮荷重を測定したブラダ10を用いて、前記プリプレグの積層条件に沿って、ハット型ストリンガ20にブラダ10を内挿し、プリプレグ30の積層実験を行った。その結果、プリプレグ30にうねりが発生せず、良好な積層が可能であった。
従来構成のブラダ10を用いて、実施例2と同様にして、プリプレグ30の積層実験を行った。その結果、プリプレグ30にうねりが生じた。
11 本体部
11a 接触壁部(台形状の横断面の上底に対応する壁部)
11b 露出壁部(台形状の横断面の下底に対応する壁部)
11c 傾斜壁部
11d 肉厚縁部(底角部位、側縁部)
12 末端金具(金属製の封止部材)
12a 加圧孔
12b 挿入部
13 末端栓部(弾性材料製の封止部材)
20 ハット型ストリンガ
20a 帯状部
20b 溝状部
30 プリプレグ
Claims (8)
- 長手方向に沿って延びる溝状部を有するハット型ストリンガを骨格材料として含む骨格構造体にプリプレグを貼付して複合材料構造物を製造する際に、前記ハット型ストリンガの前記溝状部に内挿されて用いられ、
伸縮性材料により管状に形成され、その長手方向に直交する断面である横断面が上底および当該上底よりも長い下底を有する台形状となっている本体部を備え、
前記本体部の内部は気密に封止され、かつ、当該本体部が膨張するように内部を加圧するための加圧孔が当該本体部の一方の端部に形成され、
前記本体部の前記下底に対応する壁部は、前記溝状部に内挿されたときに外面が露出する露出壁部であり、当該露出壁部の外面に前記プリプレグが貼付され、
前記本体部における前記台形状の横断面における4つの角となる部位のうち、前記下底側の両底角部位である前記露出壁部の両側縁部のみ、その厚みが他の壁部の厚みよりも大きい肉厚縁部となるよう構成され、当該肉厚縁部を除く他の壁部はいずれも同一の厚みとなっている、複合材料構造物製造用治具。 - 前記本体部の横断面における前記露出壁部は、その中央部位から両底角部位に向かって厚みが増大する形状となっている、請求項1に記載の複合材料構造物製造用治具。
- 前記露出壁部は、その横断面における中空側の輪郭が、平坦な中央部位から両底角部位に向かって曲線を描くように、厚みが増大する形状となっている、請求項2に記載の複合材料構造物製造用治具。
- 前記本体部の外周面に被覆されている被覆フィルムをさらに備えている、請求項1から3のいずれか1項に記載の複合材料構造物製造用治具。
- 前記被覆フィルムが、フッ素樹脂フィルムである、請求項4に記載の複合材料構造物製造用治具。
- 前記本体部の中空の内面側に埋設されている筒状の繊維補強材を備えている、請求項1から5のいずれか1項に記載の複合材料構造物製造用治具。
- 前記本体部の両端を封止する封止部材をさらに備え、
当該封止部材の一方は、前記加圧孔が形成された金属製であり、他方は弾性材料で形成されている、請求項1から6のいずれか1項に記載の複合材料構造物製造用治具。 - 前記伸縮性材料は、耐熱性ゴム組成物である、請求項1から7のいずれか1項に記載の複合材料構造物製造用治具。
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KR1020127009202A KR101293410B1 (ko) | 2009-09-15 | 2010-09-08 | 횡단면에 육후 부위를 가지는 복합재료 구조물 제조용 지그 |
EP10816856.8A EP2479014B1 (en) | 2009-09-15 | 2010-09-08 | Jig having thick regions in the cross-section thereof and which is for producing composite material structures |
US13/395,266 US8926313B2 (en) | 2009-09-15 | 2010-09-08 | Jig used for manufacturing composite material structure having thickened wall portion in transverse cross-section |
PCT/JP2010/005501 WO2011033741A1 (ja) | 2009-09-15 | 2010-09-08 | 横断面に肉厚部位を有する複合材料構造物製造用治具 |
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US8926313B2 (en) | 2015-01-06 |
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