JP4751914B2 - 積層構造体の剥離評価試験方法 - Google Patents
積層構造体の剥離評価試験方法 Download PDFInfo
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- JP4751914B2 JP4751914B2 JP2008161193A JP2008161193A JP4751914B2 JP 4751914 B2 JP4751914 B2 JP 4751914B2 JP 2008161193 A JP2008161193 A JP 2008161193A JP 2008161193 A JP2008161193 A JP 2008161193A JP 4751914 B2 JP4751914 B2 JP 4751914B2
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- 238000010998 test method Methods 0.000 title claims description 33
- 238000011156 evaluation Methods 0.000 title claims description 17
- 238000003475 lamination Methods 0.000 title 1
- 238000012360 testing method Methods 0.000 claims description 54
- 238000005452 bending Methods 0.000 claims description 22
- 239000006260 foam Substances 0.000 claims description 17
- 239000011229 interlayer Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 230000003014 reinforcing effect Effects 0.000 description 8
- 239000012790 adhesive layer Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
荒井、他3名、「MMB試験によるCFRP直交積層板の層間破壊靱性値の評価」、日本機械学会論文集(A編)、2004年10月、第70巻、第698号、p.1356−1363
0.5≦B1/B2≦2
となる前記補助板を用いることが好ましい。
本実施例において使用した試験装置は、以下のとおりである。
インストロン8501型
ロードセル :インストロン製ロードセル(5kN容量)
読み取り顕微鏡:×50倍
計測器 :共和製EDX1500(荷重、試験機変位の記録)。
図4に示す配置で、荷重点変位速度一定(1.0mm/min)で試験を行った。き裂が安定的に進展した場合は、荷重の負荷除荷を繰り返した。き裂の長さは、試験片の両端面から、荷重除荷時に読み取り顕微鏡を用いて計測した(JIS K 7086 3.4 DCB試験の操作)。
試験条件は、支点38と負荷点39との距離C=15mm,20mm,40mmとした。
破壊じん性値は、FEM解析結果が試験荷重Pと解析に用いた荷重PFEMの比の2乗に比例する、すなわち(P/PFEM)2に比例するとして求めた。。
図11に、破壊じん性値について、縦軸をモードI成分、横軸をモードII成分として整理した結果を示す。この結果から、本実施例より、混合モードにおけるモードI及びモードIIの比率を大きく変化させることができることが分かる。
1a 端面
2 発泡コア
3a 面板
3b 面板
4 接着層
5 き裂
6A 補強き裂片
6a 上側き裂片
6b 下側き裂片
7 補助板
32 支柱
33 支柱
34 治具
35 脚部
36 脚部
37 レバー部
38 支点
39 負荷点
42 固定ブロック
43 回転軸
45 固定ブロック
46 回転軸
48 カプトンフィルム
51 予き裂
Claims (4)
- 上下方向に面状の積層材を積層した積層構造体において、積層構造の上下方向に非対称な位置に層間き裂を形成した試験片を用いた積層構造体の剥離評価試験方法であって、
前記試験片の前記層間き裂の上下に位置するき裂片のうちの曲げ剛性の小さい方のき裂片の外側に、前記試験片の全面に亘って補助板を結合し、該補助板を結合した試験片に単軸荷重を与えることを特徴とする剥離評価試験方法。 - 前記試験片の前記層間き裂の上下に位置するき裂片のうち、曲げ剛性の小さいき裂片及び補助板を結合したものの曲げ剛性をB1、曲げ剛性の大きいき裂片の曲げ剛性をB2として、
0.5≦B1/B2≦2
となる前記補助板を用いることを特徴とする請求項1記載の剥離評価試験方法。 - 前記単軸荷重により、開口荷重と剪断荷重との組み合わせ荷重を発生させることを特徴とする請求項1又は2に記載の剥離評価試験方法。
- 前記積層構造体が、発泡体の上下にプレプレグを積層し加圧及び加熱して得られる発泡コアサンドイッチパネルである請求項1乃至3の何れかに記載の剥離評価試験方法。
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JP2010002289A JP2010002289A (ja) | 2010-01-07 |
JP4751914B2 true JP4751914B2 (ja) | 2011-08-17 |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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TWI490470B (zh) * | 2013-12-11 | 2015-07-01 | Advanced Semiconductor Eng | 層壓結構測試裝置及方法 |
CN108469389A (zh) * | 2018-02-07 | 2018-08-31 | 河南中原高速公路股份有限公司新登分公司 | 一种基于复合梁疲劳试验的路面层间粘结效果评价方法 |
CN111624099B (zh) * | 2020-04-16 | 2022-10-04 | 重庆大学 | 一种适用于高低温环境下的复合材料层合板ii型疲劳分层试验装置 |
CN113720772B (zh) * | 2021-08-31 | 2023-05-30 | 中航复合材料有限责任公司 | 一种适用于预浸料粘性定量测试的控温装置及使用方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04343042A (ja) * | 1991-05-20 | 1992-11-30 | Mitsubishi Heavy Ind Ltd | 層間剥離破壊靱性試験方法 |
JPH08285761A (ja) * | 1993-03-05 | 1996-11-01 | Yoshiki Uragami | 塗膜接着強度の測定方法 |
JP3272519B2 (ja) * | 1993-12-22 | 2002-04-08 | 三井化学株式会社 | 積層体及びその製造方法 |
JP4746340B2 (ja) * | 2005-04-01 | 2011-08-10 | 川崎重工業株式会社 | サンドイッチパネルの剥離進展防止構造 |
JP2007147348A (ja) * | 2005-11-25 | 2007-06-14 | Toray Ind Inc | 軽量サンドイッチパネルの破壊靱性試験方法 |
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