结构学习基础篇之损伤描述

不懂结构 · 发表于 2018-3-12 15:41:11

当航线的机务兄弟发现飞机某处出现结构损伤，首先会对损伤进行一定的描述，以便通知结构工程师去制定维修方案。
而一个完整的结构损伤描述应该为：位置+尺寸+类型；
例如：下部机身STA294-312，S21R-S22R，尺寸2.8IN*3.2IN*6.2IN,外表蒙皮凹坑；

结构件的位置定位：41、43、44、46、47、48
这样定位之后便于结构工程师参照手册进行特定段修理；
对于为啥那么分，据前辈讲是根据飞机蒙皮厚度分的，那六段的蒙皮厚度各不相同；

常见的损伤类型有：凹坑、划伤、刻痕、凿痕、分层、脱胶、穿孔、裂纹、褶皱等；

浅显的一些知识，觉得有用的可以看看，
欢迎批评指正。

飞机站位

飞机站位-41

飞机站位-43

飞机站位-44

飞机站位-46

飞机站位-47

飞机站位-48

总剖面站位

机务老庄 · 发表于 2018-10-26 12:20:54

楼主请问对于一个损伤属于什么类型手册中的定义在哪一章

木棉花儿 · 发表于 2018-10-28 17:51:17

机务老庄发表于 2018-10-26 12:20
楼主请问对于一个损伤属于什么类型手册中的定义在哪一章

51-10-02第四段Damage Classification 自己看吧，不过主要还是看经验，多问问师傅
D. You must decide what type of damage has occurred to a structural member or to a structural
material. The definitions of the different types of damage that can occur to the external skin of the
airplane panels are given in the paragraphs that follow:
(1) Abrasion: A damaged area that is the result of scuffing, rubbing, or other surface erosion. This
type of damage is usually rough and has an irregular shape.
(2) Corrosion: Damage that is the result of a complex electro-chemical action, and gives a
cross-sectional area change. The depth of this damage must be determined by a cleanup or a
removal operation. This type of damage occurs on the surfaces, hole bores, or edges of
structural elements.
(3) Crack: A partial fracture or a full brake in the material that causes a significant cross-sectional
area change. This damage usually has an irregular line and is often the result of fatigue in the
material.
(4) Crease: A damaged area that is depressed or folded back so that its boundaries are sharp or
with well defined lines or ridges. Consider a crease to be equal to a crack.
(5) Delamination: A type of disbond that occurs between adjacent plies of material. If an allowable
damage section or repair section does not give limits for disbonds, then use the limits specified
for delaminations.
(6) Dent: A damaged area that is pushed in from its normal contour with no change in the
cross-sectional area of the material. The edges of the damaged area are smooth. This damage
is usually caused by a hit from a smoothly contoured object. The length of the dent is the
longest distance from one end to the other end. The width of the dent is the second longest
distance across the dent, measured at 90 degrees to the direction of the length.。。。。

飞spb · 发表于 2019-3-12 17:47:33

谢谢楼主分享！

AirSuperstar · 发表于 2019-7-30 10:39:48

谢谢分享，学习了。。。

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[51结构] 结构学习基础篇之损伤描述