CN103698203B - A kind of light sheet material corrosion device for fatigue crack propagation test - Google Patents
A kind of light sheet material corrosion device for fatigue crack propagation test Download PDFInfo
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- CN103698203B CN103698203B CN201310683979.2A CN201310683979A CN103698203B CN 103698203 B CN103698203 B CN 103698203B CN 201310683979 A CN201310683979 A CN 201310683979A CN 103698203 B CN103698203 B CN 103698203B
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Abstract
The invention belongs to fatigue test technology, relate to the improvement to the light sheet material corrosion device for fatigue crack propagation test.It comprises corrosion box (2), liquid collecting pallet (4), feed tube (5) and drain pipe (6); It is characterized in that: also comprise trip bolt (3) and O-ring seal (7).The present invention proposes a kind of light sheet material corrosion device for fatigue crack propagation test of improvement, simplify operating process, improve work efficiency, ensure that sealing, avoid environmental pollution.
Description
Technical field
The invention belongs to fatigue test technology, relate to the improvement to the light sheet material corrosion device for fatigue crack propagation test.
Background technology
The Theories and methods of damage tolerance is the gordian technique of the design of advanced aircraft equipment and high performance turbine material development and evaluation, and the da/dN-Δ K data accurately grasping the thin plate airframe materials such as aircraft skin predicts the necessary master data such as crack propagation life, formulation proof cycle in damage tolerance design.The present age, the environment for use complexity of aircraft was various, therefore the crack expansion test of corrosion environment lower thin sheet material is as the important content of aeronautical material Mechanics Performance Testing, its necessity is more remarkable, " structure durability and damage tolerance design theory and means ", Li Zhengneng compiles, publishing house of BJ University of Aeronautics & Astronautics, 1998.To want to grasp accurately in aeronautical engineering fatigue crack growth energy under light sheet material corrosion environment, need based on a large amount of For Corrosion Fatigue Crack Propagation tests.
Current a kind of light sheet material corrosion device for fatigue crack propagation test is see Fig. 1:
An inside has the rectangular parallelepiped in rectangular corrosive chamber corrosion box 2 upper surface and lower surface to have thin plate import 2c and thin plate outlet respectively, thin plate import 2c and thin plate outlet are all communicated with corrosion chamber, there is one to be connected for overall inlet 5 with corrosion box 2 in corrosion bottom, box left surface, the corrosion right upper surface of box has one to be connected for overall liquid outlet 6 with corrosion box 2, inlet 5 is all communicated with corrosion chamber with the endoporus of liquid outlet 6, liquid collecting pallet 4 is positioned at below corrosion box 2, liquid collecting pallet 4 has a size and thin plate export identical liquid collecting pallet thin plate outlet.
Export with the space between sample 1 with sealant tape sealing thin plate import 2c and thin plate; The inlet 5 of corrosion box 2 is connected hose with liquid outlet 6, and inlet hose connects water pump and liquid outlet hose and is together positioned over and fills in the container of etchant solution; By sample 1 through liquid collecting pallet 4, with the outlet of sealant tape sealing liquid collecting pallet thin plate with the space between sample;
Sample 1 is clamped on testing machine chuck, opens water pump, wait in corrosion box 2 and form etchant solution backflow;
Adjustment microscope for observing, service test machine starts to load, and observes and records test figure.
Its shortcoming is: operating process is complicated, and inefficiency, cannot meet the requirement of etchant solution crack expansion test in enormous quantities.Reason is: after sample 1 is installed into corrosion device, space is there is in thin plate import 2c and thin plate outlet with between sample 1, need manual sealant tape sealing thin plate import 2c and thin plate outlet with the space between sample 1, not only operator's technology and muscle power are had higher requirements, and much consuming time, inefficiency; Meanwhile, sealing not easily ensures, causes environmental pollution.
Summary of the invention
The object of the invention is: the light sheet material corrosion device for fatigue crack propagation test proposing a kind of improvement, to simplify the operation course, increase work efficiency, ensure sealing, avoid environmental pollution.
Technical scheme of the present invention is: a kind of light sheet material corrosion device for fatigue crack propagation test, comprises corrosion box 2, liquid collecting pallet 4, feed tube 5 and drain pipe 6, have one to corrode chamber in corrosion box 2 inside, have a thin plate import 2c be communicated with corrosion chamber at the upper surface of corrosion box 2, have a thin plate be communicated with corrosion chamber to export at the lower surface of corrosion box 2, feed tube 5 is communicated with corrosion chamber with drain pipe 6, liquid collecting pallet 4 is positioned at below corrosion box 2, liquid collecting pallet 4 has a size and thin plate export identical liquid collecting pallet thin plate outlet, it is characterized in that: also comprise trip bolt 3 and O-ring seal 7, corrosion box 2 is the whole boxes be combined to form by the first half box 2a of two structural symmetry and later half box 2b, first half box 2a is a rectangular parallelepiped, the rear surface of first half box 2a has the first half box etching tank of a rectangle, there is a cross section to be the first half box seal groove of semicircular annular in the outside of first half box etching tank, the front surface of first half box 2a have along the uniform screw via hole of front surface periphery, there is one to be connected for overall feed tube 5 with first half box 2a in the bottom, left surface of first half box 2a, the endoporus of feed tube 5 is communicated with first half box etching tank, first half box thin plate import half groove of a rectangle is had on the top, rear surface of first half box 2a, first half box thin plate import half channel opening is in the upper surface of first half box 2a, first half box thin plate import half groove is communicated with first half box etching tank, there is the first half box thin plate of a rectangle to export half groove in the bottom, rear surface of first half box 2a, first half box thin plate exports half channel opening in the lower surface of first half box 2a, first half box thin plate exports half groove and is communicated with first half box etching tank, later half box 2b is a rectangular parallelepiped, the front surface of later half box 2b has the later half box etching tank of a rectangle, there is a cross section to be the later half box seal groove of semicircular annular in the outside of later half box etching tank, the front surface of later half box 2b has along the uniform threaded hole of front surface periphery, the quantity of threaded hole is identical with the quantity of the screw via hole on first half box 2a and position is corresponding, there is one to be connected for overall drain pipe 6 with later half box 2b in the right upper surface of later half box 2b, the endoporus of drain pipe 6 is communicated with later half box etching tank, later half box thin plate import half groove of a rectangle is had on the front surface top of later half box 2b, later half box thin plate import half channel opening is in the upper surface of later half box 2b, later half box thin plate import half groove is communicated with later half box etching tank, there is the later half box thin plate of a rectangle to export half groove in the bottom, rear surface of later half box 2b, later half box thin plate exports half channel opening in the lower surface of later half box 2b, later half box thin plate exports half groove and is communicated with later half box etching tank, when the rear surface of first half box 2a and the front surface of later half box 2b involutory after, first half box etching tank and later half box etching tank form complete corrosion chamber, first half box thin plate import half groove and later half box thin plate import half groove are combined to form the thin plate import 2c in corrosion chamber, first half box thin plate exports half groove and later half box thin plate exports the thin plate outlet that half groove is combined to form corrosion chamber, each installation O-ring seal 7 in first half box seal groove and later half box seal groove, by trip bolt 3, first half box 2a is connected with later half box 2b for overall.
Advantage of the present invention is: the light sheet material corrosion device for fatigue crack propagation test proposing a kind of improvement, simplifies operating process, improve work efficiency, ensure that sealing, avoid environmental pollution.
Accompanying drawing explanation
Fig. 1 is the structural representation of current a kind of light sheet material corrosion device for fatigue crack propagation test.
Fig. 2 is structural representation of the present invention.
Fig. 3 is shaft side figure of the present invention.
Embodiment
Below the present invention is described in further detail.See Fig. 2,3, a kind of light sheet material corrosion device for fatigue crack propagation test, comprises corrosion box 2, liquid collecting pallet 4, feed tube 5 and drain pipe 6, have one to corrode chamber in corrosion box 2 inside, have a thin plate import 2c be communicated with corrosion chamber at the upper surface of corrosion box 2, have a thin plate be communicated with corrosion chamber to export at the lower surface of corrosion box 2, feed tube 5 is communicated with corrosion chamber with drain pipe 6, liquid collecting pallet 4 is positioned at below corrosion box 2, liquid collecting pallet 4 has a size and thin plate export identical liquid collecting pallet thin plate outlet, it is characterized in that: also comprise trip bolt 3 and O-ring seal 7, corrosion box 2 is the whole boxes be combined to form by the first half box 2a of two structural symmetry and later half box 2b, first half box 2a is a rectangular parallelepiped, the rear surface of first half box 2a has the first half box etching tank of a rectangle, there is a cross section to be the first half box seal groove of semicircular annular in the outside of first half box etching tank, the front surface of first half box 2a have along the uniform screw via hole of front surface periphery, there is one to be connected for overall feed tube 5 with first half box 2a in the bottom, left surface of first half box 2a, the endoporus of feed tube 5 is communicated with first half box etching tank, first half box thin plate import half groove of a rectangle is had on the top, rear surface of first half box 2a, first half box thin plate import half channel opening is in the upper surface of first half box 2a, first half box thin plate import half groove is communicated with first half box etching tank, there is the first half box thin plate of a rectangle to export half groove in the bottom, rear surface of first half box 2a, first half box thin plate exports half channel opening in the lower surface of first half box 2a, first half box thin plate exports half groove and is communicated with first half box etching tank, later half box 2b is a rectangular parallelepiped, the front surface of later half box 2b has the later half box etching tank of a rectangle, there is a cross section to be the later half box seal groove of semicircular annular in the outside of later half box etching tank, the front surface of later half box 2b has along the uniform threaded hole of front surface periphery, the quantity of threaded hole is identical with the quantity of the screw via hole on first half box 2a and position is corresponding, there is one to be connected for overall drain pipe 6 with later half box 2b in the right upper surface of later half box 2b, the endoporus of drain pipe 6 is communicated with later half box etching tank, later half box thin plate import half groove of a rectangle is had on the front surface top of later half box 2b, later half box thin plate import half channel opening is in the upper surface of later half box 2b, later half box thin plate import half groove is communicated with later half box etching tank, there is the later half box thin plate of a rectangle to export half groove in the bottom, rear surface of later half box 2b, later half box thin plate exports half channel opening in the lower surface of later half box 2b, later half box thin plate exports half groove and is communicated with later half box etching tank, when the rear surface of first half box 2a and the front surface of later half box 2b involutory after, first half box etching tank and later half box etching tank form complete corrosion chamber, first half box thin plate import half groove and later half box thin plate import half groove are combined to form the thin plate import 2c in corrosion chamber, first half box thin plate exports half groove and later half box thin plate exports the thin plate outlet that half groove is combined to form corrosion chamber, each installation O-ring seal 7 in first half box seal groove and later half box seal groove, by trip bolt 3, first half box 2a is connected with later half box 2b for overall.
Feature of the present invention is: after tightening trip bolt 3, first half box 2a and later half box 2b forms complete corrosion box 2, gap seals between sample 1 and thin plate import 2c, thin plate export by O-ring seal 7 is complete, does not need to adopt other seal means just can reach desirable sealing state.
One embodiment of the present of invention, compared with existing structure, work efficiency improves more than 4 times.
Claims (1)
1., for a light sheet material corrosion device for fatigue crack propagation test, comprise corrosion box (2), liquid collecting pallet (4), feed tube (5) and drain pipe (6), one is had to corrode chamber in corrosion box (2) inside, a thin plate import (2c) be communicated with corrosion chamber is had at the upper surface of corrosion box (2), have a thin plate be communicated with corrosion chamber to export at the lower surface of corrosion box (2), feed tube (5) is communicated with corrosion chamber with drain pipe (6), liquid collecting pallet (4) is positioned at below corrosion box (2), liquid collecting pallet (4) has a size and thin plate export identical liquid collecting pallet thin plate outlet, it is characterized in that: also comprise trip bolt (3) and O-ring seal (7), corrosion box (2) is the whole box be combined to form by the first half box (2a) of two structural symmetry and later half box (2b), first half box (2a) is a rectangular parallelepiped, the rear surface of first half box (2a) has the first half box etching tank of a rectangle, there is a cross section to be the first half box seal groove of semicircular annular in the outside of first half box etching tank, the front surface of first half box (2a) have along the uniform screw via hole of front surface periphery, there is one to be connected for overall feed tube (5) with first half box (2a) in the bottom, left surface of first half box (2a), the endoporus of feed tube (5) is communicated with first half box etching tank, first half box thin plate import half groove of a rectangle is had on the top, rear surface of first half box (2a), first half box thin plate import half channel opening is in the upper surface of first half box (2a), first half box thin plate import half groove is communicated with first half box etching tank, there is the first half box thin plate of a rectangle to export half groove in the bottom, rear surface of first half box (2a), first half box thin plate exports half channel opening in the lower surface of first half box (2a), first half box thin plate exports half groove and is communicated with first half box etching tank, later half box (2b) is a rectangular parallelepiped, the front surface of later half box (2b) has the later half box etching tank of a rectangle, there is a cross section to be the later half box seal groove of semicircular annular in the outside of later half box etching tank, the front surface of later half box (2b) have along the uniform threaded hole of front surface periphery, the quantity of threaded hole is identical with the quantity of the screw via hole on first half box (2a) and position is corresponding, there is one to be connected for overall drain pipe (6) with later half box (2b) in the right upper surface of later half box (2b), the endoporus of drain pipe (6) is communicated with later half box etching tank, later half box thin plate import half groove of a rectangle is had on the front surface top of later half box (2b), later half box thin plate import half channel opening is in the upper surface of later half box (2b), later half box thin plate import half groove is communicated with later half box etching tank, there is the later half box thin plate of a rectangle to export half groove in the bottom, rear surface of later half box (2b), later half box thin plate exports half channel opening in the lower surface of later half box (2b), later half box thin plate exports half groove and is communicated with later half box etching tank, when the rear surface of first half box (2a) and the front surface of later half box (2b) involutory after, first half box etching tank and later half box etching tank form complete corrosion chamber, first half box thin plate import half groove and later half box thin plate import half groove are combined to form the thin plate import (2c) in corrosion chamber, first half box thin plate exports half groove and later half box thin plate exports the thin plate outlet that half groove is combined to form corrosion chamber, each installation O-ring seal (7) in first half box seal groove and later half box seal groove, by trip bolt (3), first half box (2a) is connected with later half box (2b) for overall.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104807700A (en) * | 2014-08-18 | 2015-07-29 | 海盐国检检测技术有限公司 | Stress corrosion testing machine |
| CN105043848B (en) * | 2015-06-09 | 2017-10-31 | 中南大学 | Fatigue experimental device and method of the sheet metal under dust atmosphere |
| CN105572025A (en) * | 2016-01-19 | 2016-05-11 | 奥瑞金包装股份有限公司 | Liquid storage cup for testing tin-plated steel plate and testing device |
| CN107727489B (en) * | 2017-08-30 | 2019-11-22 | 中国航发北京航空材料研究院 | A kind of clamping and fixing device of sheet metal compression |
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