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1、复合材料结构修理复合材料结构修理 航空工程学院航空工程学院 飞机系统教研室飞机系统教研室 Tuesday, July 30, 2024Tuesday, July 30, 2024Tuesday, July 30, 2024Tuesday, July 30, 2024Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3
2、.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章7-1 复合材料方向鸵损伤修理 7-2 飞机雷达罩修理7-3 A8B飞机机翼蒙皮的外场螺接修理7-4 A320飞机机腹整流壁板修理 飞机复合材料修理案例飞机复合材料修理案例Evaluation only.Created with Aspo
3、se.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose
4、 Pty Ltd.第七章第七章复合材料方向舵损伤修理复合材料方向舵由碳环氧夹芯面板、翼梁和肋组成。夹芯材料为NOMEX蜂窝,面板采用碳纤维平纹织物增强,碳纤维单向带用于局部加强 Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-201
5、1 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章修理材料 EA956,湿铺贴修理用环氧树脂体系; EA923l,中等粘度胶粘剂; 120型玻璃布;平纹碳布; NOMEX蜂窝; Astro Strike28,防雷电网。整个修理过程包括:修理准备,修理铺层及修理表凹的准备,下蒙皮修理,蜂窝芯更换上蒙皮修理,表面火焰喷铝的修理。Evaluation only.Created w
6、ith Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-201
7、1 Aspose Pty Ltd.第七章第七章 (1)修理准备 目视检查蒙皮的损伤情况,然后用敲击法确定损伤区域的大小。 用无绒抹布三氯乙烷溶液清洗修理区域,清洗完毕后擦干溶液。 按一定几何形状(如椭圆形、圆形、长方形)将损伤或者污染的上蒙皮区域切掉,最小的圆角半径0.50R。按同样的形状将下蒙皮也切掉,下蒙皮的切除周边尺寸比上蒙皮大约为2.5mm。 将裸露的蜂窝芯切除。在内部用一个小磨轮除去任何残留的蜂窝芯。 将修理区域周边粘贴上胶带,保护周边复合材料。注意每个铺层有0.5in的搭接边。 用砂纸将切口边缘打磨光滑Evaluation only.Created with Aspose.Slid
8、es for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Lt
9、d.第七章第七章 (2)修理铺层及修理表面的准备 按修理区域同样的尺寸准备一个木块或金属块,以在修理固化时作压力块用。 准备修理铺层模板,在模板上面标出铺层编号及方向。修理铺层1到4与切口在同样的尺寸,而修理铺层5和6应当延伸到蜂窝芯的边缘。 称量所用铺层碳布的质量称量同等质量的EA956树脂。按说明书混合树脂,注意应在树脂适用期内完成全部操作。 在一个切割平面上放置一片隔离膜,其大小应能覆盖碳纤维织物。 将树脂涂在隔离膜上,然后在树脂上面放上干的碳纤维织物。用另一层隔离膜覆盖浸渍了树脂的碳纤维织物。 用刮片在隔离膜上面将树脂压入碳纤维织物中。 重复上述步骤使足够的碳纤维织物浸渍上树脂。 将模
10、板铺在浸渍树脂的碳纤维织物上。按所需形状剪裁出需要的补片。剪裁时注意纤维的方向。最后将铺层编号及方向标在隔离膜上。 确保所有的表面准备工作已经完成。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Lt
11、d.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章 (3)下蒙皮修理在方向舵的下蒙皮,将一热电偶放置在切口边缘附近。用高温胶带将热电偶贴好,注意胶带和修理铺层不能接触。准备一块厚度大于3-5mm的支撑板。支撑板的尺寸应略大于损伤区域。在支撑板上覆盖一层隔离膜后,将支撑板贴到方向舵下蒙皮损伤区城外表面,支撑板应完全覆盖损伤切口区域。将修理铺层1的一面隔离膜除去将其铺于损伤区域。注意应保证边缘接触很好、无皱
12、折。将修理铺层1的另一隔离膜也除去。将修理铺层2的一面隔离膜除去,然后铺在铺层1上,将铺层2铺设平整。重复上述操作,将全部修理铺层铺贴完毕。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Ev
13、aluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章 将准备好的压力块放到修理铺层上的修理凹陷中。 在压力块上覆盖一层无孔膜和透气毡沿修理区域周边在上蒙皮上制作一个真空袋。 在支撑板外部下蒙皮上制作一个真空袋。 在真空袋上铺设两层玻璃布后,铺设电热毯。电热毯至少要比修理铺层边缘大8-10mm。 11在整个固化过程中应施加和保持0.3压力真空。固化温度80-900C,保持24h。Evaluation only.Cr
14、eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2
15、004-2011 Aspose Pty Ltd.第七章第七章 (4)蜂窝芯更换 将蜂窝切割成适当大小,并预装配到切口中。蜂窝的长度和宽度应稍大些,以使与切口贴合紧密。 在EA9321树脂中加入5质量的玻璃微球,完全混合均匀。 将混入微球的树脂涂抹在蜂窝芯拼接边缘,以及切口内未损伤的裸露蒙皮表面。安装替换蜂窝芯塞,其芯条方向要与原来一致。 在替换蜂窝芯塞上铺一层隔离膜,然后放一重物,以供压力。 在室温固化至少12h或80-900C 固化1h。 固化后除去隔离膜,用180号或更细砂纸打磨蜂窝芯使之与周围表面平齐(图7-3)。Evaluation only.Created with Aspose.S
16、lides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty
17、 Ltd.第七章第七章(5)上蒙皮修理 砂纸打磨上蒙皮损伤区附近表面,使其成为一个利于胶接的表面。 用较低的压缩空气从蜂窝芯格中将打磨、切割产生的碎屑吹除,然后用干净的无绒布擦净。 在蒙皮表面用去离子水进行一个水破裂试验。采用一个喷雾器将水喷在修理区域,注意不要让水流到蜂窝芯内。水膜可在30s内不破裂为合格表面,否则重新打磨 用干净无绒抹布擦去表面水膜,在60-700C干燥60min,以除去所有的水分。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-201
18、1 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章准备所需修理铺层。将修理铺层7的一面隔离膜除去,注意应保证边缘接触很好、无皱折。将修理铺层7的为一
19、隔离膜也除去。将修理铺层8的一面隔离膜除去,然后铺在铺层7上,将铺层8铺设平整。重复上述操作,将全部修理铺层铺贴完毕。在修理区域覆盖一层无孔膜和透气毡,沿修理区域周边在上蒙皮上制作一个真空袋。11在真空袋上铺设两层玻璃布后铺设电热毯。电热毯至少要比修理铺层边缘大8-10cm。12在整个固化过程中应施加和保持0.3压力真空。固化温度80-900C,保持2-4h.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evalu
20、ation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章(6)表面金属涂层的修理 0砂纸打磨金属化涂层周边约1-2.5cm。 将一层120型玻璃布浸渍EA956树脂后,铺在碳环氧层合板裸露表面,并与
21、金属涂层有大约lcm的搭接。这层玻璃布铺层用以碳环氧层合板和铝层间的腐蚀保护,不可省略。 将EA956按照约600gcm2涂覆修理区域然后再将Astro Strike28铺贴在上面,注意应和现存金属涂层至少搭接2.5cm。 用一层有孔膜覆盖其上,再在有孔膜上加一层玻璃布,用作吸胶层。 安装真空袋,施加全真空压力。保持2-4h。 表面喷防护漆。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation onl
22、y.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章 TU154机头雷达罩修理 对于雷达罩的修理,应考虑三方面的要求。气动外形的要求 结构强度的要求 电性能的要求 Evaluation only.Created
23、with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-20
24、11 Aspose Pty Ltd.第七章第七章 修理材料 孔格1.83cm的高密度Nomex蜂窝,其高度与雷达罩破损区蜂窝高度相同(7.9mm)。 JC-1室温固化环氧体系。其特点是固化速度快,室温力学性能好,可500C长期使用。 斜纹高强度玻璃布。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Clie
25、nt Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章修理过程 (1)蜂窝芯预成形 蜂窝预成形在准备好的阳模上进行。首先把预浸胶的蜂窝芯置于模具上,蜂窝边缘四周悬挂数个小沙袋,使蜂窝与模具贴紧,然后置于烘箱内加热至1400C ,保温2h。 (2)清理破损蜂窝及内外蒙皮 将破损蜂窝和蒙皮去除,将蒙皮打磨成阶
26、梯状(图7-5)。用吸尘器吸走残渣碎屑,用丙酮将表面清洗撩净。(3)内蒙皮衬壳糊制和安装 在阳模上采用单层玻璃布糊制一衬壳,待固化后脱模并修剪到所需大小。用室温固化树脂将此衬壳与雷达罩蜂窝表面粘接,固化后便成为具有所需形状的刚性支撑体,同时也是内蒙皮的第一层。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5
27、Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章(4)内蒙皮修理 将第二层玻璃布糊到已粘贴在雷达罩上的“衬壳”上,并与原来该层玻璃布搭接。待第二层凝胶后,糊制第三层玻璃布。室温固化4h,500C 下后固化2h。(5)蜂窝芯替换 在内蒙皮蜂窝一侧表面和损伤区蜂窝侧面均匀涂覆JC-1胶粘剂,然后
28、将沿破损边切好的预成型蜂窝芯放置于内蒙皮上利用真空施加0.03-0.04MPa压力,室温固化4h。 (6)外蒙皮修理 在修理好的蜂窝表面糊制外蒙皮第一层玻璃布,待其凝胶后糊制第二层,待第二层凝胶后,糊制第三层玻璃布。为保证强度和刚度,外蒙皮在原来三层的基础上增加到四层。 (7)500C下整体固化2h。 (8)表面涂层修理。表面涂覆环氧底漆、防静电漆和环氧面漆。 Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Eval
29、uation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章A8B飞机机翼蒙皮的外场螺接修理修理方案 A8B飞机机翼蒙皮采用AS43501-6环氧复合材料层合板制造,蒙皮铺层为(0450450900)
30、。A8B飞机机翼蒙皮的损伤出现在翼梁和翼肋交接点附近。考虑到外场修理受到设备、环境和人员技术水平的限制,材料储存也有困难,采用胶接修理有困难,因此决定采用螺接修理。修理目标为:在设计极限载荷下,总体应变能力应达到4000mmmm以上。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profil
31、e 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章设计许用值 在螺接修理后,主要可能出现的三种破坏形式:沿紧固件孔截面的拉伸破坏;层合板的挤压和拉伸混合破坏;紧固件受剪破坏。针对上述三种破坏形式,确定设计许用值。 (1)孔边应变 为了确定紧固件孔边设计应变许用值采用A-8B飞机机翼蒙皮作为试样,在有四种螺孔直径分别为6
32、.35mm,25.4mm,63.5mm,101.6mm的情况下,测量了破坏时的总体应变值 Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created wit
33、h Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章)拉伸挤压相互作用 在拉伸挤压相互作用下,大多数试验件在距损伤孔最近的一排螺栓处产生破坏。利用厚度为4.76mm的复合材料层板进行试验,根据试样破坏的总体应变值和挤压应力,通过计算得到最大螺栓载荷,确定了拉伸挤压相互作用时的设计应变值 Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright
34、2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章(3)紧固件受剪 使用钛合金补强板,由紧固件传递的许用剪切载荷依赖于钛合金补强板上
35、的埋头深度(图78),而直径为6.35mm的螺栓,单剪破坏载荷为1757kN,假设剪切载荷全部由螺杆的c部分承受,取c1.42mm,那么对于4.06mm厚的钛合金补强板就可满足强度要求。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004
36、-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章修理设计对于12.7mm厚,有101.6mm直径,发生在粱肋交点附近的损伤,从图7-6可知其总体应变值为2850mmmm。修理的目的是恢复蒙皮的总体应变能力到4000mmmm。因此要求钛合金补强板承受的载荷与蒙皮损伤面积原来承受的载荷相当。钛合金补强板的载荷计算按图7-9所示进行估算。Evaluation only.
37、Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright
38、 2004-2011 Aspose Pty Ltd.第七章第七章试验验证对于损伤直径为101.6mm,厚度为12.7mm的复合材料蒙皮修理设计作了试验验证,结果表明修理后的试样,在损伤截面拉断,与位于钛金补强板一侧的螺钉剪断几乎同时发生,钛合金补强板和蒙皮上的紧固件孔处,没有发现明显的挤压伸长变形。损伤孔边的应变和计算值相一致,试验极限载荷达设计载荷112,对应总体破坏应变为4480mmmm,试样的破坏形式为紧固件剪断,并且蒙皮板沿钉孔截面拉伸断裂。对于厚度为4.76mm的蒙皮修理后还作了疲劳试验,在经过4倍寿命试验后,进行剩余强度试验,试样发生拉伸挤压混合破坏破坏时总体应变达5200mmmm
39、,满足设计要求。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client P
40、rofile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章 A320飞机机腹整流壁板修理 A320飞机的机腹整流壁板为玻璃布蒙皮加Nomex蜂窝的夹层结构,其中某一件壁板的结构示意图如图710所示。 由于设计问题,导致机腹整流壁板在飞行期间被机油行染,出现严重的分层现象,因此根据服务通告(SB)的要求,需按结构修理手册(SRM)进行修理并改装。下面以内蒙皮及蜂窝损伤为例,对修理过程做一简单介绍。 Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.
41、2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章(1)将壁板直立,用40-600C的热水清洗壁板,
42、清洗时应防止热水及油污进入壁板内表面。洗后用不起毛的布擦干;,然后仍直立状态放在通风干燥处晾干。(2)通过目视及敲击检查,确定损伤区的范围,并在部件上标记清楚。具体损伤情况如图711所示。(3)首先按标记线从油污严重的地方开始切除损伤或污染的内蒙皮,然后再除去受污染的蜂窝。在切除时尽量不损坏未损伤或污染的蒙皮和蜂窝,并保证所有的拐角半径不小于25mm。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluatio
43、n only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章(4)除去余下的全部内蒙皮,尽可能不损坏蜂窝,然后消除全部废物,确保除尽全部油迹和污染。(5)用240目砂纸轻轻打磨保留下的蜂窝表面,除去毛刺。从内向
44、外制备内蒙皮修理区的台阶,台阶示意图如图712所示。在不同的预浸料层片间做台阶时,要保证下面的铺层不被损坏。再用320目砂纸打磨修理区表面,并用真空吸尘器清除壁板表面及蜂窝孔格内的碎屑和灰尘,然后用不起毛的布蘸少量丙酮轻轻擦拭胶接表面。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profi
45、le 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章6)将壁板直立放置于烘箱中。在800C下至少于燥8h。(7)根据损伤情况准备足够的修理用材料:蜂窝芯预浸料胶膜泡沫胶TEDLAR膜Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profil
46、e 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章(8)将保留下的壁板放入模具,根据模具上的
47、限位器调整好位置并固定。在蜂窝置换区内铺1层胶膜,将准备好的蜂窝用泡沫胶包住侧面周边,按原来的类型和方向铺放在蜂窝置换区内。在保留下的内蒙皮上铺满1层胶膜,然后按原有铺层将准备好的预浸料进行层对层的置换铺贴。最后在壁板全部内表面铺满1层TEDLAR膜作为防护层,蜂窝拼接缝上要放压平板。 (9)做真空袋,按图7-13的固化条件在热压罐中固化。(10)检查固化记录并对壁板进行目视及敲击检查,以确定固化状态良好。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2
48、011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章复合材料蜂窝夹芯地板修理复合材料蜂窝夹芯地板修理根据不同应用区域,分为根据不同应用区域,分为3
49、个区域个区域A区:客舱地板区:客舱地板B区:集装箱式货舱地板区:集装箱式货舱地板C区:散装式货舱地板(可能加强一层铝板)区:散装式货舱地板(可能加强一层铝板)-易损伤易损伤Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 A
50、spose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章散装式货舱地板半穿透损伤的级别与修理措施散装式货舱地板半穿透损伤的级别与修理措施(1)当损伤的最大直径)当损伤的最大直径85mm,类损伤类损伤临时性修理:用铝胶带密封损伤区域,临时性修理:用铝胶带密封损伤区域, 尽快进行永久修理尽快进行永久修理永久性修理永久性修理 在飞行在飞行350小时内,按小时内,按A方案进行修理方案进行修理类
51、损伤的要求:同一地板上任何一个损伤的最大直类损伤的要求:同一地板上任何一个损伤的最大直径径85mm;相邻两个损伤的边缘距离必须大于其中;相邻两个损伤的边缘距离必须大于其中任何一个较大损伤的最大直径的任何一个较大损伤的最大直径的2倍,否则两个损伤倍,否则两个损伤视为一个损伤;在视为一个损伤;在X,Y方向上损伤边缘距离地板边缘方向上损伤边缘距离地板边缘距离距离40mm。X为飞机纵轴,为飞机纵轴,Y为飞机横轴。为飞机横轴。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2
52、004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章(2)当)当85mm 损伤的最大直径损伤的最大直径250mm,类损伤类损伤临时性修理
53、:用铝胶带密封损伤区域,临时性修理:用铝胶带密封损伤区域, 尽快进行永久修理尽快进行永久修理永久性修理永久性修理 在飞行在飞行350小时内,按小时内,按B方案进行修理方案进行修理类损伤的要求类损伤的要求:同一块地板损伤必须满足同一块地板损伤必须满足85mm 损伤的最大直径损伤的最大直径250mm;相邻两个边缘损伤的距离相邻两个边缘损伤的距离70mm,否则视为一个损伤,在,否则视为一个损伤,在X方向上损伤的边方向上损伤的边缘与地板的边缘之间的距离缘与地板的边缘之间的距离200mm,Y方向上方向上40mmEvaluation only.Created with Aspose.Slides for
54、.NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七
55、章(3)当损伤的最大直径)当损伤的最大直径250mm,类损伤类损伤临时性修理:整个地板覆盖临时性修理:整个地板覆盖0.8mm厚的铝板厚的铝板永久性修理永久性修理 在飞行在飞行150小时内,更换地板小时内,更换地板类损伤的要求:在类损伤的要求:在X方向上两个相邻损伤的边缘方向上两个相邻损伤的边缘之间的距离之间的距离2Rrame Bay;在在Y方向上两个相邻损方向上两个相邻损伤的边缘之间的距离伤的边缘之间的距离1Rrame Bay;在;在X方向任方向任何一个损伤的边缘与地板的边缘的距离必须何一个损伤的边缘与地板的边缘的距离必须200mm,在,在Y方向上方向上40mmRrame Bay:地板下面两个
56、隔框的距离:地板下面两个隔框的距离。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.
57、5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章(4)在同一地板上,当所有损伤的面积和超过整个)在同一地板上,当所有损伤的面积和超过整个地板的地板的10%,必须进行永久修理或更换地板,必须进行永久修理或更换地板(5)当损伤的边缘与地板边缘之间的距离不满足上)当损伤的边缘与地板边缘之间的距离不满足上述条件时,按述条件时,按C方案进行永久修理方案进行永久修理Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.C
58、opyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章三种永久修理方案三种永久修理方案(1)永久修理)永久修理A方案方
59、案此修理方案适用于的半穿透修理,要求损伤85mm,不需要更换蜂窝, 采用铝板修理厚1.2mm(2024 T3 ),蜂窝夹芯(LN29967C5)Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.
60、Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章程序:程序:1.去除修理区域的漆层,清洁修理区域,烘干去除修理区域的漆层,清洁修理区域,烘干2.重新评估损伤,是否可用重新评估损伤,是否可用A方案修理方案修理3.按如图切割损伤按如图切割损伤4.用双面胶带覆盖补片背面用双面胶带覆盖补片背面5.用填充剂填充损伤,固化,打磨与周边平齐用填充剂填充损伤,固化,打磨与周边平齐6.将准备好的补片粘结到合适位置。施加一定
61、的将准备好的补片粘结到合适位置。施加一定的压力。压力。7.修整,清洁修理区域,把补片边缘密封起来。修整,清洁修理区域,把补片边缘密封起来。8.恢复修理区域的漆层。恢复修理区域的漆层。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2
62、011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章(2)永久修理)永久修理B方案方案此修理方案适用于的半穿透修理,85mm 损伤的最大直径250mm ,要求更换蜂窝,如地板有铝板覆盖如图修理。采用铝板修理厚1.2mm(2024 T3 )Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profi
63、le 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章程序修理程序修理1.去除修理区域的漆层,
64、清洁修理区域,烘干去除修理区域的漆层,清洁修理区域,烘干2.去除损伤蒙皮和蜂窝,清洁,烘干去除损伤蒙皮和蜂窝,清洁,烘干3.重新评估损伤,是否可用重新评估损伤,是否可用B方案修理方案修理4.准备蜂窝夹芯塞和足够的胶粘剂准备蜂窝夹芯塞和足够的胶粘剂5.安装蜂窝,并保持高度与周围平齐安装蜂窝,并保持高度与周围平齐6.固化,可以适当加热减少固化时间固化,可以适当加热减少固化时间7.准备补片,用粘结剂准备补片,用粘结剂08-017把补片粘结到合适位置把补片粘结到合适位置8.去除多余粘结剂,修整、清洁修理区域去除多余粘结剂,修整、清洁修理区域9.恢复修理区域涂层恢复修理区域涂层Evaluation on
65、ly.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyri
66、ght 2004-2011 Aspose Pty Ltd.第七章第七章(3)永久修理)永久修理C方案方案当损伤边缘与地板边缘不满足当损伤边缘与地板边缘不满足A.B方案要求时。方案要求时。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004
67、-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章程序修理程序修理1.去除损伤区域周围密封剂,去除修理涂层,清洁去除损伤区域周围密封剂,去除修理涂层,清洁2.去除损伤,尽可能形成规则的切口,清洁,干燥去除损伤,尽可能形成规则的切口,清洁,干燥3.准备一块铝板吧损伤区域与相邻的地板隔开,以准备一块铝板吧损伤区域与相邻的地板隔开,以便填充剂固化时形成合适的形状,在铝板和
68、原始紧便填充剂固化时形成合适的形状,在铝板和原始紧固件上涂脱模剂,且安装到位固件上涂脱模剂,且安装到位4.用足够的填充剂填充损伤,固化,打磨确保填充用足够的填充剂填充损伤,固化,打磨确保填充剂与周围高度一致剂与周围高度一致5.拆除修理区域的铝板和紧固件拆除修理区域的铝板和紧固件7.按要求制作补片,倒角,清洁,补片上涂底漆按要求制作补片,倒角,清洁,补片上涂底漆8.将补片安装到位,在补片上复原紧固件空。按照将补片安装到位,在补片上复原紧固件空。按照要求铆钉间距,边距要求。所有空要去毛刺,划窝。要求铆钉间距,边距要求。所有空要去毛刺,划窝。Evaluation only.Created with
69、Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 As
70、pose Pty Ltd.第七章第七章9.用密封剂湿安装补片,同时密封补片与相邻地用密封剂湿安装补片,同时密封补片与相邻地板之间的间隙。板之间的间隙。10.去除多余密封剂,修整,清洁,恢复漆层。去除多余密封剂,修整,清洁,恢复漆层。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile
71、 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.第七章第七章Any question ?Any question ?Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2004-2011 Aspose Pty Ltd.