CN104266067B - High-temperature-resistant laminate based on steel wire gauze pad damping structure - Google Patents
High-temperature-resistant laminate based on steel wire gauze pad damping structure Download PDFInfo
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- CN104266067B CN104266067B CN201410444394.XA CN201410444394A CN104266067B CN 104266067 B CN104266067 B CN 104266067B CN 201410444394 A CN201410444394 A CN 201410444394A CN 104266067 B CN104266067 B CN 104266067B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 93
- 239000010959 steel Substances 0.000 title claims abstract description 93
- 238000013016 damping Methods 0.000 title abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 42
- 239000011241 protective layer Substances 0.000 claims abstract description 39
- 238000009413 insulation Methods 0.000 claims description 20
- 239000011120 plywood Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 8
- 238000002955 isolation Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000008642 heat stress Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 238000010276 construction Methods 0.000 description 8
- 230000008646 thermal stress Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000000956 alloy Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 206010037660 Pyrexia Diseases 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Landscapes
- Vibration Prevention Devices (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a high-temperature-resistant laminate based on a steel wire gauze pad damping structure. The high-temperature-resistant laminate based on the steel wire gauze pad damping structure comprises an outer protective layer (1), a middle heat insulating layer (2) and an inner structural layer (3). The high-temperature-resistant laminate based on the steel wire gauze pad damping structure is mainly characterized by further comprising the steel wire gauze pad damping structure (4), wherein the steel wire gauze pad damping structure (4) is arranged between the protective layer (1) and the structural layer (3) and is nested in the middle of the heat insulating layer (2), the steel wire gauze pad damping structure (4) is provided with an outer cylinder (41), a first steel wire gauze pad (44) and a second steel wire gauze pad (45), wherein the first steel wire gauze pad (44) and the second steel wire gauze pad (45) are horizontally arranged in the outer cylinder (41) with one above the other, and the second steel wire gauze pad (45) is arranged on a base plate (46) with the lower surface being contact with the upper surface of the structural layer (3). The high-temperature-resistant laminate based on the steel wire gauze pad damping structure has the advantages that the heat insulating effect, the vibration isolation effect and the damping effect are remarkable, and the heat stress generated due to the fact that the temperature of a load-carrying structure of an aircraft can be reduced; the structure is simple, maintenance is easy and cost is low.
Description
Technical field
The invention belongs to field of aerospace technology, relate to a kind of high temperature resistant lamination being applied under hot environment in high-speed aircraft
Plate, a kind of high-temperature-resistant layer plywood based on steel net pad vibration-proof structure.
Background technology
Hypersonic aircraft, when coming in and going out atmosphere or continuing in space flight, will bear huge aerodynamic force and Aerodynamic Heating.Adopt
Just can avoid with heat structure completely because of structure ablation or fail to its aerial mission undertaken competent, it is possible to avoiding adopting
The weight of aircraft is increased with thermal protection.Pneumatic heat energy makes the mechanical property of structural material reduce, and applied stress reduces so that occurring
Creep；And the mutual constraint between thermal structure parts, under Thermal Load, stress can be produced in the structure again so that deforming
Aggravate and cause the change of warpage and creep properties.Current high-speed aircraft surface texture can not realize simultaneously heat insulation, vibration damping,
Reducing the function of the thermal stress that thermograde causes, and structure is complicated, mounting or dismounting complex procedures, reliability is low.Ask for this type of
Topic, researchers expect to find more new structure type of attachment to eliminate aircraft under hot environment always both at home and abroad for many years
Thermal stress in heat structure.
Acta Astronautica 2008.9, Vol.29 of China, " the high temperature alloy thermal protection system design and analysis of No.5,1698-1683
[J] " disclose a kind of heat-resisting alloy honeycomb sandwich structure.The inner panel of this technology uses titanium alloy honeycomb, middle spaced heat
Layer uses the fibrous insulating material of lower thermal conductivity, and inside and outside metal honeycomb panels is welded together by interface channel；Bear pneumatic
During pressure, metal interface channel plays the effect of load transmission.Metal fastenings passes bottom interface channel, by metal fever protective plate
Link together with housing construction.Interface channel cavity is filled the heat insulation fiber of lower thermal conductivity, passes through metal connecting piece to reduce
Enter the heat of housing construction.Channel cover is made up of High-temperature resistant alloy material, is used for sealing top panel, prevents high-temperature gas direct
Enter fabric.The flexible bending side-closed made with tinsel, in the surrounding of metal fever protective plate, stops gap between plate
Radiation heat transfer.The defect of this technology is: its metal fever safeguard structure only possesses heat insulation effect, the such as vibration isolation of other function, subtracts
The function such as shake is not made to consider: can produce thermal deformation when " outer panels " is heated, and endothecium structure is the most heat insulation without phase occurs because of success
The thermal deformation answered, when " connector " and " securing member " produce bending for adapting to the change in location of levels junction point, makes
Cheng Liao lower floor " wainscot " and the thermal stress of " housing construction "；Level of vibration cannot be reduced；Can not individually dismantle, give maintenance,
Checking and replacing is made troubles, whole service life life cycle costing is high.
Summary of the invention
It is an object of the invention to overcome the defect of prior art, proposing one can heat insulation, vibration damping, reduction thermograde cause
Thermal stress, simple in construction, the high-temperature-resistant layer plywood based on steel net pad vibration-proof structure being easily maintained.
For achieving the above object, the present invention is by the following technical solutions: a kind of based on steel net pad vibration-proof structure high temperature resistant
Laminate, including protective layer, middle thermal insulation layer, the structure sheaf of internal layer and a steel net pad vibration-proof structure of outer layer；Described
Steel net pad vibration-proof structure be arranged between described protective layer and structure sheaf and be nested in the middle of described thermal insulation layer；Institute
The steel net pad vibration-proof structure stated has a urceolus and the first steel net pad and second the most horizontally disposed in described urceolus
Steel net pad；The second described steel net pad is placed on the base plate that a lower surface contacts with structure sheaf upper surface.Its feature exists
In:
The crown center of described urceolus has a central axis hole；The lower edge of urceolus has the outer flanging that a circle is vertical with sidewall；
Four outer flanging through holes it are evenly equipped with on described outer flanging.
Described steel net pad vibration-proof structure also includes an axis being arranged in urceolus；The epimere shaft diameter of described axis is little
In hypomere shaft diameter；The circle centre position of described epimere axle has an internal thread hole extended vertically downward；The upper end of epimere axle leads to
Cross after described central axis hole stretches out described urceolus top and contact with the lower surface of protective layer；The lower surface of described hypomere axle with
The upper surface of the second described steel net pad contacts；The first described steel net pad is enclosed within described epimere axle；First steel wire
The upper surface of gauze pad contacts with the lower surface at described urceolus top, and its lower surface contacts with the upper surface of described hypomere axle.
Described protective layer has the funnel-shaped hole of and the internal thread hole concentric of described axis；One sunk screw is worn
Enter in described internal thread hole after crossing described funnel-shaped hole；The upper surface of described sunk screw and the upper surface of protective layer
Concordant.
Described the first steel net pad, between the second steel net pad and described urceolus, leave side clearance.
Gap, top is left between described urceolus and described protective layer.
Described protective layer is identical with Laminate construction thickness, and insulation thickness is more than thickness or the thickness of structure sheaf of protective layer.
Have on described base plate four with the four of described urceolus outer flanging through hole is the most corresponding, concentric, internal diameter are equal
Bottom hole；Described structure sheaf has four holes, location the most corresponding with described bottom hole, that concentric, internal diameter are equal；
Four keepers respectively penetrate in the most corresponding described outer flanging through hole, bottom hole and hole, location.
Described thermal insulation layer is 11:1:1 with protective layer, the thickness proportion of structure sheaf.
Described laminate includes the steel net pad vibration-proof structure described at least four, is respectively arranged at four edges of laminate.
Beneficial effects of the present invention and advantage be: (1) can be effectively isolated the heat of Aerodynamic Heating and be transferred to aircraft load knot
Structure.(2) there is the vibration isolation for all directions dynamic loading, effectiveness in vibration suppression, it is possible to decrease the aircraft that the pneumatic dynamic loading of outer surface causes
Load-carrying construction vibratory response.(3) thermal stress that aircraft load-carrying construction produces can effectively be reduced because of non-uniform temperature.(4) knot
Structure is simple, be easily maintained, low cost.
The present invention will be further described below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the section of structure of prior art " a kind of heat-resisting alloy honeycomb sandwich structure laminate ".
Fig. 2 is the sectional structure chart of a kind of high-temperature-resistant layer plywood based on steel net pad vibration-proof structure of the present invention.
Fig. 3 is the urceolus view of steel net pad vibration-proof structure of the present invention shown in Fig. 2.
Fig. 4 is the middle axonometric drawing of steel net pad vibration-proof structure of the present invention shown in Fig. 2.
Fig. 5 is the first steel net pad view of steel net pad vibration-proof structure of the present invention shown in Fig. 2.
Fig. 6 is the second steel net pad view of steel net pad vibration-proof structure of the present invention shown in Fig. 2.
Fig. 7 is the base view of steel net pad vibration-proof structure of the present invention shown in Fig. 2.
Wherein, in Fig. 1,901 high temperature alloy channel covers, 902 outer panels, 903 alumina fibre implants, 904 connectors,
905 wainscots, 906 housing constructions, 907 securing members.
In figures 2-7,1 protective layer, 11 funnel-shaped holes, 2 thermal insulation layers, 3 structure sheafs, 31 holes, location, 4 steel net pads subtract
Shake structure, 41 urceolus, 411 central axis holes, 412 outer flangings, 413 outer flanging through holes, 43 axis, 431 epimere axles, 432 times
Section axle, 433 internal thread holes, 44 first steel net pads, 45 second steel net pads, 46 base plates, 461 bottom holes, 5 countersunk heads
Screw, 6 bolts, 7 side clearances, 8 gaps, top.Wherein, 1 protective layer, 11 funnel-shaped holes, 2 thermal insulation layers, 3 knots
Structure layer, 31 holes, location, 4 steel net pad vibration-proof structures, 41 urceolus, 411 central axis holes, 412 outer flangings, 413 outer flanging through holes,
43 axis, 431 epimere axles, 432 hypomere axles, 433 internal thread holes, 44 first steel net pads, 45 second steel net pads, 46
Base plate, 461 bottom holes, 5 sunk screws, 6 bolts, 7 side clearances, 8 gaps, top.
Detailed description of the invention
A kind of high-temperature-resistant layer plywood based on steel net pad vibration-proof structure of the present invention, including the protective layer 1, middle of outer layer
Thermal insulation layer 2, the structure sheaf 3 of internal layer and a steel net pad vibration-proof structure 4；Described steel net pad vibration-proof structure 4 is arranged on institute
Between protective layer 1 and the structure sheaf 3 stated and be nested in the middle of described thermal insulation layer 2；Described steel net pad vibration-proof structure
4 have a urceolus 41 and the first steel net pad 44 and the second steel net pad 45 the most horizontally disposed in described urceolus 41；
The second described steel net pad 45 is placed on the base plate 46 that a lower surface contacts with structure sheaf 3 upper surface.Wherein, described
Protective layer 1 material be high-temperature alloy, intermediate thermal insulating layer 2 material is the light heat-insulating material such as refractory fibre, aeroge, interior
Rotating fields layer 3 material is various structural metal or composite.It is characterized in that:
The crown center of described urceolus 41 has a central axis hole 411；It is vertical with sidewall that the lower edge of urceolus 41 has a circle
Outer flanging 412；Four outer flanging through holes 413 it are evenly equipped with on described outer flanging 412.
Described steel net pad vibration-proof structure 4 also includes an axis being arranged in urceolus 41 43；Described axis 43 upper
Section axle 431 diameter is less than hypomere axle 432 diameter；The circle centre position of described epimere axle 431 have one extend vertically downward interior
Screwed hole 433；The upper end of epimere axle 431 by described central axis hole 411 stretch out behind described urceolus 41 top with protective layer 1
Lower surface contact；The lower surface of described hypomere axle 432 contacts with the upper surface of the second described steel net pad 45；Institute
The first steel net pad 44 stated is enclosed within described epimere axle 431；The upper surface of the first steel net pad 44 and described urceolus 41
The lower surface at top contacts, and its lower surface contacts with the upper surface of described hypomere axle 432.Two described steel net pads
High-damping wire material can be used.Two steel net pads are used to enable the direction, perpendicular plate face of laminate to bear bigger dead load.
Described protective layer 1 has the funnel-shaped hole 11 of and internal thread hole 433 concentric of described axis 43；One
Sunk screw 5 enters in described internal thread hole 433 after described funnel-shaped hole 11；Described sunk screw 5 upper
Surface is concordant with the upper surface of protective layer 1.
Have on described base plate 46 that four flanging through holes about 413 outer with four of described urceolus 41 are corresponding, concentric,
The bottom hole 461 that internal diameter is equal；Described structure sheaf 3 have four corresponding, coaxial with described bottom hole about 461
The hole, location 31 that the heart, internal diameter are equal；Four keepers 6 respectively penetrate the most corresponding described outer flanging through hole 413,
In bottom hole 461 and bottom hole 461.
Side clearance 7 is left between described first steel net pad the 44, second steel net pad 45 and described urceolus 41.
Gap 8, top is left between described urceolus 41 and described protective layer 1.The effect leaving side clearance 7 and gap 8, top is:
Can be in the case of not posting lotus to laminated plate structure layer 3, it is allowed to allow the Free Transform of laminate protective layer 1, thus eliminate
Laminated plate structure is due to the thermal stress suffered restraints or produce due to the uneven of temperature field.
Described protective layer 1 is identical with structure sheaf 3 thickness, and thermal insulation layer 2 thickness is more than the thickness of protective layer 1 or structure sheaf 3
Thickness.
Described thermal insulation layer 2 is 11:1:1 with protective layer 1, the thickness proportion of structure sheaf 3.
Described laminate includes the steel net pad vibration-proof structure 4 described at least four, is respectively arranged at four corners of laminate
Place.Laminate size is unrestricted, and preferred laminate board dimension takes 300mm × 300mm.Can be loaded according to laminate institute
Size determine quantity and the density of laminate steel net pad vibration-proof structure.
In actual use, hold when a kind of high-temperature-resistant layer plywood protective layer 1 based on steel net pad vibration-proof structure of the present invention
During by perpendicular plate face Tensile or Compressive Loading, both the first steel net pad 44 and the second steel net pad 45 or a pressurized, can effectively transmit
Static(al)；When in plate face, transverse load is bigger, by steel net pad 44,45, axis 43 contact with urceolus 41, improve horizontal stroke
To force transfer capacity, control the transversely deforming level of protective layer 1；For on protective layer 1 effect all directions dynamic loading, due to
It is intended to by two steel net pad going downs, and steel net pad has preferable vibration damping, vibration isolation effect, the most particularly steel wire
Gauze pad deforms phase mutual friction between the filament that can cause in gauze pad, thus plays obvious damping vibration attenuation function；Work as guarantor
When sheath 1 bears transverse load in thermal stress or other plate face, between existing between steel net pad, axis 43 and urceolus 41
Gap, can not transmit load on the basis of structure sheaf 3, allows protective layer 1 Free Transform, thus reduction layer board structure by
In the thermal stress suffered restraints or produce due to the uneven of temperature field.
Steel net pad of the present invention can use high-damping wire material to make, below with Ni-Cr-Ti stainless steel metal wire material
As a example by, the preparation method of steel net pad is described:
1. Ni-Cr-Ti stainless steel metal wire is woven into the specific metal gauze through number of latitude, and wire diameter scope is Ф 0.05mm
To Ф 2mm；
2. wire netting is folded into band, arranges lay, obtain steel net pad blank；
3. stock is put in corresponding mould, low speed molding under l0KN mono-40KN pressure.
The installation step of a kind of high-temperature-resistant layer plywood based on steel net pad vibration-proof structure of the present invention is as follows:
1. base plate 46 is put on structure sheaf 3, it is ensured that four bottom holes 461 and four location on structure sheaf 3 on base plate 46
Hole 31 is the most coaxial；
2. on base plate 46, put the second steel net pad 45, axis the 43, first steel net pad 44 successively；
3. urceolus 41 is enclosed within outside above-mentioned first, second steel net pad 44,45 and axis 43, it is ensured that the bottom of urceolus 41
Contact with base plate 46, and on urceolus 41, four outer flanging through holes 413 are the most coaxial with four bottom holes 461 on base plate 46；
Four keepers 6 hole, location 31 bottom structure sheaf 3 will upwards penetrate, then led to by bottom hole 461, outer flanging
Hole 413, so that structure sheaf 3, base plate 46, urceolus 41 are mutually located with fixing；
4. on structure sheaf 3, put thermal insulation layer 2, protective layer 1 successively；
5. sunk screw 5 is screwed into the internal thread hole 433 of axis 43, it is ensured that sunk screw 5 upper surface and protective layer 1 are in same
One plane.So far, assembling completes.
Claims (4)
1. a high-temperature-resistant layer plywood based on steel net pad vibration-proof structure, including protective layer (1), the middle thermal insulation layer of outer layer
(2), the structure sheaf (3) of internal layer and a steel net pad vibration-proof structure (4)；Described steel net pad vibration-proof structure (4) sets
Put between described protective layer (1) and structure sheaf (3) and be nested in the middle of described thermal insulation layer (2)；Described steel
Mesh pad vibration-proof structure (4) has a urceolus (41) and the first steel wire the most horizontally disposed in described urceolus (41)
Gauze pad (44) and the second steel net pad (45)；Described the second steel net pad (45) is placed in a lower surface and structure sheaf (3)
On the base plate (46) that upper surface contacts, it is characterised in that:
The crown center of described urceolus (41) has a central axis hole (411)；The lower edge of urceolus (41) have a circle with
The outer flanging (412) that sidewall is vertical；Four outer flanging through holes (413) it are evenly equipped with on described outer flanging (412)；
Described steel net pad vibration-proof structure (4) also includes an axis (43) being arranged in urceolus (41)；In described
Epimere axle (431) diameter of axle (43) is less than hypomere axle (432) diameter；The circle centre position of described epimere axle (431) has
One internal thread hole extended vertically downward (433)；The upper end of epimere axle (431) is stretched out by described central axis hole (411)
Behind described urceolus (41) top, the lower surface with protective layer (1) contacts；The lower surface of described hypomere axle (432) with
The upper surface of described the second steel net pad (45) contacts；Described the first steel net pad (44) is enclosed within described epimere axle
(431) on；The upper surface of the first steel net pad (44) contacts with the lower surface at described urceolus (41) top, its following table
Face contacts with the upper surface of described hypomere axle (432)；
Described protective layer (1) has one and leads to the infundibulate of internal thread hole (433) concentric of described axis (43)
Hole (11)；In one sunk screw (5) enters described internal thread hole (433) afterwards through described funnel-shaped hole (11)；
The upper surface of described sunk screw (5) is concordant with the upper surface of protective layer (1)；
Side clearance (7) is left between described the first steel net pad (44), the second steel net pad (45) and described urceolus (41)；
Gap, top (8) is left between described urceolus (41) and described protective layer (1)；
Described protective layer (1) is identical with structure sheaf (3) thickness, and thermal insulation layer (2) thickness is more than the thickness of protective layer (1)
Or the thickness of structure sheaf (3).
A kind of high-temperature-resistant layer plywood based on steel net pad vibration-proof structure the most according to claim 1, is characterized in that: described
Base plate (46) on have four flanging through holes (413) outer with four of described urceolus (41) up and down the most corresponding, concentric,
The bottom hole (461) that internal diameter is equal；Described structure sheaf (3) have four the most right with described bottom hole (461)
Should, hole, location (31) that concentric, internal diameter are equal；Four keepers (6) respectively penetrate the most corresponding described outside
In flanging through hole (413), bottom hole (461) and hole, location (31).
A kind of high-temperature-resistant layer plywood based on steel net pad vibration-proof structure the most according to claim 1, is characterized in that: described
Thermal insulation layer (2) and protective layer (1), the thickness proportion of structure sheaf (3) be 11:1:1.
A kind of high-temperature-resistant layer plywood based on steel net pad vibration-proof structure the most according to claim 1, is characterized in that: described
Laminate include the steel net pad vibration-proof structure (4) described at least four, be respectively arranged at four edges of laminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410444394.XA CN104266067B (en) | 2014-09-02 | 2014-09-02 | High-temperature-resistant laminate based on steel wire gauze pad damping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410444394.XA CN104266067B (en) | 2014-09-02 | 2014-09-02 | High-temperature-resistant laminate based on steel wire gauze pad damping structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104266067A CN104266067A (en) | 2015-01-07 |
| CN104266067B true CN104266067B (en) | 2017-01-11 |
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|---|---|---|---|
| CN201410444394.XA Expired - Fee Related CN104266067B (en) | 2014-09-02 | 2014-09-02 | High-temperature-resistant laminate based on steel wire gauze pad damping structure |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5750272A (en) * | 1995-02-10 | 1998-05-12 | The Research Foundation Of State University Of New York | Active and adaptive damping devices for shock and noise suppression |
| CN1858480A (en) * | 2005-04-30 | 2006-11-08 | 上海温兴生物工程有限公司 | Steel-plastic composite pipe suitable for welding connection |
| CN101244642B (en) * | 2007-02-15 | 2013-09-11 | 洛阳双瑞金属复合材料有限公司 | Metal net plate damping composite material and method for manufacturing same |
| CN201176183Y (en) * | 2008-03-28 | 2009-01-07 | 山东金塔建设有限公司 | Automobile casing |
| CN102032305A (en) * | 2010-12-13 | 2011-04-27 | 南京航空航天大学 | Eccentric type steel mesh pad damper |
| CN102943840B (en) * | 2012-11-05 | 2015-03-11 | 中国船舶重工集团公司第七〇五研究所 | Perforated constrained damping structure used for reducing vibration and insulating sound of ship |
| CN103587159A (en) * | 2013-10-26 | 2014-02-19 | 衡阳泰豪通信车辆有限公司 | Honeycomb sandwich panel and making method thereof |
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2014
- 2014-09-02 CN CN201410444394.XA patent/CN104266067B/en not_active Expired - Fee Related
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