CN110501152A - A kind of test method and test fixture of the reproduction of connecting-type construction package intermittent defect - Google Patents
A kind of test method and test fixture of the reproduction of connecting-type construction package intermittent defect Download PDFInfo
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- CN110501152A CN110501152A CN201910797158.9A CN201910797158A CN110501152A CN 110501152 A CN110501152 A CN 110501152A CN 201910797158 A CN201910797158 A CN 201910797158A CN 110501152 A CN110501152 A CN 110501152A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
Abstract
The present invention proposes a kind of test method of connecting-type construction package intermittent defect reproduction, is tested based on three aspect contents, respectively the influencing mechanism of plug, corrosion and vibration stress to connecting-type construction package internal contact area.By taking electric connector as an example, under difference plug number, the degree of wear to electrical connector interior pin hole contact area and the influence to electric connector unit for electrical property parameters be not also identical.A kind of test method of the connecting-type construction package intermittent defect reproduction proposed in the present invention is to carry out plug test, corrosion test and vibration test respectively for connecting-type construction package such as electric connector, determine every kind test in electrical connector interior pin hole contact area most vulnerable to the actual conditions of damage after, circulation composite test is carried out according to optional test condition, the circulation of three kinds of tests is carried out by every kind of test application condition of control to simulate the time of day of electric connector product in the actual use environment.
Description
Technical field
The present invention relates to a kind of test methods of failure reproduction, more particularly to a kind of intermittent event of connecting-type construction package
Hinder the test method of reproduction.
Background technique
The scope of application of connecting-type construction package is very extensive, and use environment is sufficiently complex and is mostly various Stress superpositions
Environment.To this without clearly detailed regulation in existing test method and relevant criterion.
The constituent element such as electric connector, switch, relay etc. of typical connecting-type construction package is widely used in various set
In standby, system or complex equipment, to realize the transmission of electric signal.Data statistics and analysis surface from U.S. army, by being electrically connected
Device stitch loosens or fatigue, electric wire are worn or fracture of wire, contactor are bad, solder joint cracking, printing printed line bad connection, device performance
Intermittent defect caused by degeneration etc. accounts for about 80% or more of military aircraft intermittent fault, is the root for equipping intermittent defect.
Intermittent defect problem is product using inevitable physics sex expression after a certain period of time, mechanism mostly be electrically connected
The damage of device, device etc., degeneration and external environment stress are closely related, and under action of environmental stresses, the small of contact condition changes
Change all will cause very big influence to signal, thus be easier to that intermittent fault problem occurs.Intermittent defect problem presence is relatively bright
True mechanism and rule, it is possible to realize effectively monitoring and reproduction, become the hot spot currently studied both at home and abroad.If route occurs
These failures, gently then airplane equipment is paralysed, and system function cannot achieve, heavy then fatal crass, caused by consequence it is inestimable.Closely
Nian Lai, with the raising of China's equipment actual combatization level, task intensity and complexity, equipment configuration becomes increasingly complex, building ring
Border is more and more severe.In the case where environmental stress and electric stress comprehensive function, phase occurs for connecting-type construction package contact interface
To displacement, stress relaxation, oxidation, abrasion and electrochemical corrosion, contact performance is caused gradually to be degenerated, so that failure.Wherein, it vibrates
Be cause failure main environment stress, caused by failure Zhan always fail 28%.Effective solution of intermittent defect problem,
For improving, complex equipment availability and actual combatization are horizontal, reduce maintenance and support expense is of great significance.
Summary of the invention
In order to solve the deficiencies in the prior art mentioned above, the present invention proposes a kind of intermittent defect replicate test side
Method is based on three aspect contents, respectively plugs, the influence of corrosion and vibration stress to connecting-type construction package internal contact area
Mechanism.By taking electric connector as an example, under difference plug numbers, the degree of wear to electrical connector interior pin hole contact area and to electricity
The influence of connector unit for electrical property parameters is not also identical.In corrosive environment, electrical connector interior pinholed surface is easily corroded, even if
Pinholed surface material composition includes gold plate, but due to the micropore problem and electrochemical reaction of gold plate, base material still can
It is corroded, influences the contact condition of electric connector pin hole contact area, influence the electrical contact performance of electric connector over time.Needle
To vibration environment, under different stress levels and direction of vibration, the contact condition of electric connector pin hole contact area and abrasion
Degree is not also identical.
Specifically, the present invention provides a kind of test method of connecting-type construction package intermittent defect reproduction comprising with
Lower step:
S1, it determines experiment number: electric connector being fixed on plug testing machine by test fixture, electric connector is set
Within 0~1000 time, connection and isolated maximum rate are 300 times/h for the connection of plug end and socket end and separation number,
Insertion depth is greater than or equal to the 70% of the minimum hole depth of jack, and electric connector insertion force is monitored during plugging test and is pulled out
The size of power output chooses in plug number the number that fails at first of electric connector as recycling the examination for plugging test in composite test
Test number；
S2, it determines experimental period: being placed in salt fog cabinet when choosing qualified electric connector under separated position, carry out multiple follow
The time of ring experiment, each circulation experiment is 3h, during each circulation experiment, sprays salt fog 0.5h, is passed through
SO20.5h, stands 2h later, experiment total time be for 24 hours, 48h or 72h, in experimentation, at interval of observing electric connector for 24 hours
Internal pinholed surface pattern, and plug together electric connector and test its contact resistance, choose electric connector pinholed surface in test duration
When there is the test period of significant change or contact resistance apparent increase as the test of salt spray test in composite test is recycled
Between；
S3, it determines experiment condition: choosing the qualified electric connector plugged together and carry out vibration test, will be electrically connected by fixture
Device, which is transversely mounted, to be fixed on a vibration table, and the vibration test in two stages is carried out for electric connector, is carried out first random durable
Vibrational excitation electrical connector interior pin hole contact area fretting wear forms accumulated damage, then vibrates to electric connector
Frequency sweep test, in certain vibration frequency range, when the case where close to or over threshold value 50m Ω, stopping occurs in contact resistance
Test cycle chooses trial stretch of the vibration frequency range as random durable vibration test in circulation composite test at this time；
S4, the qualified electric connector of selection carry out plug test according to the plug experimental condition and number that determine in step S1,
The contact resistance of electric connector is tested after the test；
To be placed in salt fog cabinet in the electric connector of separated position, according to the salt spray test condition determined in step S2 and
Duration carries out multiple circulation experiments, tests the contact resistance of electric connector after the test；
Electric connector is plugged together, carries out random vibration test according to the vibration test condition and duration that determine in step S3,
The situation of change of real-time monitoring contact resistors of electric connector during test, if there is not intermittent defect, i.e. electric connector
Contact resistance is intermittently mutated the case where being more than threshold value 50m Ω, then repeatedly step S4 carries out circulation composite test, until being electrically connected
Device is connect to occur stopping test when intermittent defect；
S5, monitoring data when intermittent defect occurs in record electric connector, analyze the data, obtain in the vibration
The progressive formation and sensitivity of contact resistance when intermittent defect occur for electric connector under the conditions of dynamic test, and when follow-up test presses
It is adjusted according to the test result.
Preferably, salt spray test chamber temperature is 35 DEG C -37 DEG C in step S2, and the distilled water of NaCl is selected when preparing salting liquid
Or deionized water solution, the mass percentage of NaCl are 5%-6%, the sedimentation rate of salt fog is 1.0ml/80cm2* h~
3.0ml/80cm2* h, SO2Flow velocity is 35cm3/min*m3, collection liquid pH value is 2.5~3.2.
Preferably, when carrying out random durable vibration in step S3, test electricity is carried out according to the specified electric loading of the electric connector
Pressure and the application of test current, if electric connector is multi-core electrical connector, test electric loading should according to the capacity after drop volume into
Row applies, and applies the durable vibration of 6h to electric connector, and test carries out at room temperature.
Preferably, when carrying out swept-sine vibration to electric connector in step S3, the electric connector laterally put is carried out
The vibration frequency sweep test that frequency is within the scope of 20~2000Hz, acceleration is within the scope of 1g~15g, the frequency sweep time be 15min~
20min, test electric current are 100mA.
Preferably, the plug end and socket end of electric connector must be made in step S1 in connection each time and separation process
It is fully connected and separates.
Preferably, the present invention also provides a kind of test fixture, the test fixture can in the horizontal and vertical directions with
Electric connector is fixed.
Preferably, the test fixture includes bottom plate and bracket, and the bottom plate and the bracket are fixed by connector
On vibration table, the bracket generally inverted U-shaped structure, the bracket includes top plate and two side plates, the bottom of two side plates
Portion is fixed on the vibration table, and a side of two side plates is provided with baffle, and the top plate and the baffle are respectively provided with
There is circular through hole, the circular through hole of the baffle is used to install horizontal direction electric connector socket end flanges disk, the top plate
Circular through hole is for installing vertical direction electric connector socket end flanges disk, the electric connector of horizontal direction and vertical direction installation
Another side that plug end tail accessory and conducting wire pass through two side plates extends out.
Preferably, the bottom plate and the bracket are bolted on vibration table.
Compared with prior art, the invention has the following advantages:
The intermittent defect replicate test method proposed in the present invention is for connecting-type construction package such as electric connector point
Plug test, corrosion test and vibration test are not carried out, determine that electrical connector interior pin hole contact area is most easy in every kind of test
After the actual conditions being damaged, circulation composite test is carried out according to optional test condition, is applied by every kind of test of control
Condition carries out the circulation of three kinds of tests to simulate the time of day of electric connector product in the actual use environment.
Detailed description of the invention
Fig. 1 is flow diagram of the invention；
Fig. 2 is contact resistors of electric connector situation of change schematic diagram of the invention；
Fig. 3 is the side structure schematic view of test fixture of the invention；
Fig. 4 is the overlooking structure diagram of test fixture of the invention；
Specific embodiment
Below with reference to the attached drawing exemplary embodiment that the present invention will be described in detail, feature and aspect.It is identical attached in attached drawing
Icon note indicates element functionally identical or similar.Although the various aspects of embodiment are shown in the attached drawings, unless special
It does not point out, it is not necessary to attached drawing drawn to scale.
The present invention provides a kind of test method of connecting-type construction package intermittent defect reproduction comprising following steps:
S1, it determines experiment number: electric connector being fixed on plug testing machine by test fixture, electric connector is set
The connection of plug end and socket end and separation number are within 0~1000 time, and stepping 50 times, connection and isolated maximum rate are
300 times/h, insertion depth is not less than the 70% of the minimum hole depth of jack, and electric connector insertion force is monitored during plugging test
With the size of withdrawal force, chooses the number that electric connector fails at first in plug number and be used as plug test in circulation composite test
Test number (TN)；
S2, it determines experimental period: choosing qualified electric connector and be placed in salt fog cabinet in separated position, it is real to carry out multiple circulations
It tests, the time of each circulation experiment is 3h, during each circulation experiment, sprays salt fog 0.5h, is passed through SO20.5h,
Stand 2h later, experiment total time be for 24 hours, 48h or 72h, in experimentation, at interval of observing electrical connector interior pin hole for 24 hours
Surface topography, and plug together electric connector and test its contact resistance, it chooses electric connector pinholed surface in test duration and occurs obviously
Test period of the test period of variation or contact resistance apparent increase as salt spray test in circulation composite test；
S3, it determines experiment condition: choosing the qualified electric connector plugged together and carry out vibration test, will be electrically connected by fixture
Device, which is transversely mounted, to be fixed on a vibration table, and the vibration test in two stages is carried out for electric connector, is carried out first random durable
Vibrational excitation electrical connector interior pin hole contact area fretting wear forms progressive damage, then carries out to electric connector sinusoidal
Frequency sweep vibration, in certain vibration frequency range, when the case where close to or over threshold value 50m Ω, stopping occurs in contact resistance
Test cycle chooses experimental condition of the random durable vibration test condition as vibration test in circulation composite test at this time；
S4, the qualified electric connector of selection carry out plug test according to the plug experimental condition and number that determine in step S1,
The contact resistance of electric connector is tested after the test；
Electric connector in separated position is placed in salt fog cabinet, according to the salt spray test condition and duration determined in S2
Multiple circulation experiments are carried out, the contact resistance of electric connector is tested in off-test；
Electric connector is plugged together, carries out random vibration test according to the vibration test condition and duration that determine in step S3,
The situation of change of real-time monitoring contact resistors of electric connector during test, if there is not intermittent defect, i.e. electric connector
Contact resistance is intermittently mutated the case where being more than threshold value 50m Ω, then repeatedly step 4 carries out circulation composite test, until being electrically connected
Device is connect to occur stopping test when intermittent defect；
S5, monitoring data when intermittent defect occurs in record electric connector, analyze the data, can be derived that
The progressive formation and sensitivity of contact resistance when intermittent defect, follow-up test occur for electric connector under the conditions of the vibration test
When can be adjusted according to the test result.
The main purpose of this method is that excitation electric connector product intermittent defect occurs, contacts electricity defined in this method
Resistance threshold value is 50m Ω, is decreased to less than 50m Ω again after the contact resistance value monitored repeatedly mutation occurs more than 50m Ω, even
When the case where being down to initial value, it was demonstrated that the phenomenon that electric connector has had already appeared intermittent defect.Test monitoring number is exported at this time
According to, which is analyzed, thus known to test data under the vibration test magnitude electric connector product occur it is intermittent
How are the progressive formation of contact resistance and sensitivity when failure, and the number of intermittent defect such as occurs, and intermittent defect occurs
When contact resistance value size, occur intermittent defect compared with the frequency range of concentration, vibration level, mode of vibration etc., subsequent mould
Quasi- test method can be adjusted according to the test result.
Blank of the China in terms of connecting-type structure intermittent defect replication technology has been filled up in the proposition of this method, for more
Really more it is visually observed that intermittent defect provides technical support, same technical method can be used for other electrical contacts
Element, such as switch, relay.
Preferably, in step S2 salt spray test chamber temperature be 35 ± 2 DEG C, prepare salting liquid when select NaCl distilled water or
Deionized water solution, mass percentage are (5 ± 1) %, and the sedimentation rate of salt fog is 1.0~3.0ml/80cm2* h, SO2Flow velocity is
35cm3/min*m3, collection liquid pH value is 2.5~3.2.
Preferably, it when carrying out random durable vibration in step S3, is tried according to the specified electric loading of model electric connector
The application of electrical verification pressure and test current, if multi-core electrical connector, then testing electric loading should be applied according to the capacity after drop volume
Add, apply the durable vibration of 6h to electric connector according to test as defined in 1217 method 2005 of GJB, test carries out at room temperature.
Preferably, when carrying out swept-sine vibration to electric connector in step S3, the electric connector laterally put is tested
Sample carries out frequency is within the scope of 20~2000Hz, acceleration is within the scope of 1g~5g vibration frequency sweep test, and the frequency sweep time is
15min~20min, test electric current are 100mA.
Preferably, the plug end and socket end of electric connector must be made in step S1 in connection each time and separation process
It is fully connected and separates.
The purpose for carrying out plug test is mainly the abrasion of electrical connector interior contact contact area, forms damage, so that
Contact surface roughness increases, or even exposes base material, plays promotion acceleration for next step salt spray corrosion test process.
In the case where contact area surface generates damage, the Among Corrosive Factors such as acid salt fog can make the extent of corrosion of the contact area
It aggravates, accumulates the good corrosion product of insulation performance in the area, change so as to cause unit for electrical property parameters, be easier to occur
Failure.In this case, the addition of vibration stress, so that nonconducting corrosion product of contact area surface accumulation generates pine
It is dynamic.With the variation of vibration frequency range, vibration acceleration magnitude and time of vibration, the presence meeting of corrosion product is so that be electrically connected
Area, the irregular variation of pressure generation of device pin hole actual contact area are connect, so that inspiring electric connector contact electricity occurs
The intermittent defect of moment high-impedance state is presented in resistance.
Specifically, in the practical service environment of outfield, because carrying out experiment, for the hair of this intermittent defect
It is raw to be prejudged with one.And because intermittent defect be it is random, when product using to a certain extent when,
Having a rest property failure will occur accidentally, at random, and once occur for the first time, then the second even possibility of third time occur
Property can substantially increase.
Connector is tested by the test method of this patent, the type product can be evaded and actually used in outfield
Occur the risk of intermittent defect in environment, prejudge and be mainly reflected in:
1, it in practical service environment, if connector had occurred and that an intermittent defect, if taken no action to, such as ties up
Maintenance etc. is repaired, then second of intermittent defect will occur for the connector；
2, model connector energy in the case where this proof stress is horizontal is obtained after testing according to the test method of this patent
The enough time that uses for guaranteeing not occurring intermittent defect is n months, if outfield practical service environment stress and proof stress magnitude
When almost the same, then line n months whens can take measures to the connector, such as maintenance maintenance or directly change,
It is even advanced to n-1 months, to prevent intermittent defect；
3, the contact resistance of connector is tested in the practical service environment of outfield, discovery resistance value has been approached interval
Property fault threshold, can prejudge the connector intermittent defect will occurs, take immediate measure, and take preventive measures.
The effective information obtained by the test method, including performance parameter index variation tendency and index of aging etc.,
It can be prejudged before connector breaks down, substantially reduce connector intermittent defect in practical service environment and occur
Probability.
As shown in Figures 3 and 4, the present invention also provides a kind of test fixture, test fixture can be in horizontal and vertical direction
It is upper to be fixed with electric connector.
Preferably, test fixture includes bottom plate 1 and bracket 2, and bottom plate 1 and bracket 2 are fixed on shake table by connector
On face, the generally inverted U-shaped structure of bracket 2, bracket 2 includes that top plate 21 and two side plates 22, the bottom of two side plates 22 are fixed on
On vibration table, a side of two side plates 22 is provided with baffle 23, and top plate 21 and baffle 23 are provided with circular through hole 24,
For installing horizontal direction electric connector socket end flanges disk, the circular through hole 24 of top plate 21 is used for the circular through hole 24 of baffle 23
Vertical direction electric connector socket end flanges disk is installed, horizontal direction and the electrical connector plug end tail portion that vertical direction is installed are attached
Another side that part and conducting wire pass through two side plates extends out.
Preferably, bottom plate 1 and bracket 2 are fixed on vibration table by bolt 4.Four edges of bottom plate 1 pass through 4
Bolt fix, the periphery of bracket 2 is fixed by 8 bolts.
Preferably, the two sides of bracket 2 are provided with triangle support frame 3.
Specific embodiment
By taking J599/26JE06PN and J599/20JE06SN model electric connector as an example, the specified electricity of the model electric connector
Load is 600V, 23A, and under normal circumstances, in the case where being lower than voltage rating and rated current, electric connector generally can be just
Often work, therefore electric loading 10V, 1A is selected to be tested.
Firstly, carrying out plug test to the model electric connector, test number (TN) is respectively 100 times, 300 times and 500 times, row
Journey is set as 20mm, plugs together and is set as 5 times/min with the rate of departure, the insertion force of electric connector when discovery plugs 300 times
It is substantially reduced with separating force, failure conditions occurs in electric connector, while observing surface and apparent wear trace occurred.
Therefore 300 times are chosen as the test number (TN) for plugging test in circulation composite test.
Secondly, separately take the model electric connector carry out for 24 hours, salt fog/SO of 48h, 72h2Composite testing, find when for 24 hours,
Electric connector pinholed surface has already appeared green corrosion substance, therefore chooses the examination as salt spray test in circulation composite test for 24 hours
Test duration.
Then, the model electric connector is separately taken to carry out random vibration test, respectively to being transversely mounted fixed electric connector
Carry out 6h, 12h, 18h, vibration acceleration 1g2The vibration test of/Hz, test display 12h random vibration test process of knowing the real situation
In, there is the situation of contact resistance apparent increase in electric connector, therefore chooses 12h as random vibration examination in circulation composite test
The test duration tested.
Finally, model electric connector circulation is optionally taken to carry out plug test, salt fog/SO2 composite testing and random vibration
Test, carries out 2 circulations altogether, and the data result during testing is as shown in table 1 below.
Data result during the test of table 1
In second circulation composite test period during random vibration test, contact resistors of electric connector situation of change is such as
Shown in lower Fig. 2.From figure 2 it can be seen that contact resistance variation is violent, contact resistance within the entire random vibration test period
It has been more than threshold value 50m Ω, intermittent defect phenomenon has occurred, wherein changing most acutely between 20~22h vibrating, phenomenon of the failure is most
Obviously.
Comparative example: if without plug and salt spray test, the model electric connector is directly taken directly to carry out random vibration
Test, to the vibration test for being transversely mounted fixed electric connector progress 12h, vibration acceleration 1g2The vibration test of/Hz,
Contact resistors of electric connector situation of change is as follows during test, is only enumerated partial data.During the test, connect
Electric shock resistance is substantially unchanged, maintains an equal level always with initial value, therefore be unable to reach the purpose of test.
Table 2 only carries out electrical connector portions contact resistance tables of data during random vibration test
Finally, it should be noted that above-described embodiments are merely to illustrate the technical scheme, rather than to it
Limitation；Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should understand that:
It can still modify to technical solution documented by previous embodiment, or to part of or all technical features into
Row equivalent replacement；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (8)
1. a kind of test method of connecting-type construction package intermittent defect reproduction, it is characterised in that: itself the following steps are included:
S1, it determines experiment number: electric connector being fixed on plug testing machine by test fixture, electrical connector plug is set
Within 0~1000 time, connection and isolated maximum rate are 300 times/h, insertion for the connection of end and socket end and separation number
Depth is greater than or equal to the 70% of the minimum hole depth of jack, monitoring electric connector insertion force and withdrawal force during plugging test
Size, it is secondary as the test for plugging test in circulation composite test to choose the number that fails at first of electric connector in plug number
Number；
S2, it determines experimental period: being placed in salt fog cabinet when choosing qualified electric connector under separated position, it is real to carry out multiple circulations
It tests, the time of each circulation experiment is 3h, during each circulation experiment, sprays salt fog 0.5h, is passed through SO20.5h,
Stand 2h later, experiment total time be for 24 hours, 48h or 72h, in experimentation, at interval of observing electrical connector interior pin hole for 24 hours
Surface topography, and plug together electric connector and test its contact resistance, it chooses electric connector pinholed surface in test duration and occurs obviously
Test period of the test period of variation or contact resistance apparent increase as salt spray test in circulation composite test；
S3, it determines experiment condition: choosing the qualified electric connector plugged together and carry out vibration test, it is by fixture that electric connector is horizontal
To being fixed on shake table, the vibration test in two stages is carried out for electric connector, carries out random durable vibration first
The contact area fretting wear of electrical connector interior pin hole is excited, accumulated damage is formed, vibration frequency sweep then is carried out to electric connector
Test, when contact resistance occurred close to or over the case where threshold value 50m Ω, stops examination in certain vibration frequency range
Circulation is tested, trial stretch of the vibration frequency range as random durable vibration test in circulation composite test at this time is chosen；
S4, the qualified electric connector of selection carry out plug test according to the plug experimental condition and number that determine in step S1, test
After test electric connector contact resistance；
Electric connector in separated position is placed in salt fog cabinet, according to the salt spray test condition and duration determined in step S2
Multiple circulation experiments are carried out, test the contact resistance of electric connector after the test；
Electric connector is plugged together, carries out random vibration test, test according to the vibration test condition and duration that determine in step S3
The situation of change of real-time monitoring contact resistors of electric connector in the process, if there is not intermittent defect, i.e. electric connector contact
Resistance is intermittently mutated the case where being more than threshold value 50m Ω, then repeatedly step S4 carries out circulation composite test, until electric connector
Occur stopping test when intermittent defect；
S5, monitoring data when intermittent defect occurs in record electric connector, analyze the data, obtain and try in the vibration
The progressive formation and sensitivity of contact resistance when intermittent defect occur for electric connector under the conditions of testing, according to this when follow-up test
Test result is adjusted.
2. the test method of connecting-type construction package intermittent defect reproduction according to claim 1, it is characterised in that: step
Salt spray test chamber temperature is 35 DEG C -37 DEG C in rapid S2, and the distilled water or deionized water solution of NaCl are selected when preparing salting liquid,
The mass percentage of NaCl is 5%-6%, and the sedimentation rate of salt fog is 1.0ml/80cm2* h~3.0ml/80cm2* h, SO2Flow velocity
For 35cm3/min*m3, collection liquid pH value is 2.5~3.2.
3. the test method of connecting-type construction package intermittent defect reproduction according to claim 1, it is characterised in that: step
When carrying out random durable vibration in rapid S3, applying for test voltage and test current is carried out according to the specified electric loading of the electric connector
Add, if electric connector is multi-core electrical connector, testing electric loading should be applied according to the capacity after drop volume, to electric connector
Apply the durable vibration of 6h, test carries out at room temperature.
4. the test method of connecting-type construction package intermittent defect reproduction according to claim 1, it is characterised in that: step
When carrying out swept-sine vibration to electric connector in rapid S3, frequency is carried out in 20~2000Hz model to the electric connector laterally put
Interior, vibration frequency sweep test of the acceleration within the scope of 1g~15g is enclosed, the frequency sweep time is 15min~20min, and test electric current is
100mA。
5. the test method of connecting-type construction package intermittent defect reproduction according to claim 1, it is characterised in that: step
The plug end of electric connector must be made to be fully connected and separate with socket end in connection and separation process each time in rapid S1.
6. a kind of test clamp of the test method for connecting-type construction package intermittent defect described in claim 1 reproduction
Tool, it is characterised in that: the test fixture can be fixed with electric connector in the horizontal and vertical directions.
7. test fixture according to claim 6, it is characterised in that: the test fixture includes bottom plate and bracket, described
Bottom plate and the bracket pass through connector and are fixed on the vibration table of shake table, the bracket generally inverted U-shaped structure, institute
Stating bracket includes top plate and two side plates, and the bottom of two side plates is fixed on the vibration table, a side of two side plates
Face is provided with baffle, and the top plate and the baffle are provided with circular through hole, and the circular through hole of the baffle is for installing water
Square to electric connector socket end flanges disk, the circular through hole of the top plate is for installing vertical direction electric connector socket hold-carrying
Blue disk, the electrical connector plug end tail accessory and conducting wire that horizontal direction is installed with vertical direction pass through the another of two side plates
A side extends out.
8. test fixture according to claim 7, it is characterised in that: the bottom plate and the bracket are bolted
On vibration table.
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| CN201910797158.9A CN110501152B (en) | 2019-08-27 | 2019-08-27 | Test method and test fixture for intermittent fault recurrence of connection type structural assembly |
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| CN201910797158.9A CN110501152B (en) | 2019-08-27 | 2019-08-27 | Test method and test fixture for intermittent fault recurrence of connection type structural assembly |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413546A (en) * | 2020-04-07 | 2020-07-14 | 宁波市重强电器有限公司 | Contact resistance analysis method of electric connector |
| CN111460698A (en) * | 2020-01-13 | 2020-07-28 | 北京邮电大学 | Passive intermodulation prediction method under stress fatigue of connector jack |
| CN111504629A (en) * | 2020-05-09 | 2020-08-07 | 上海华碧检测技术有限公司 | Alternative test method for traditional type test of electronic connector |
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| CN112540323A (en) * | 2020-12-17 | 2021-03-23 | 中国航空综合技术研究所 | In-situ simulation and online diagnosis method for contact failure of electric connector |
| CN112540323B (en) * | 2020-12-17 | 2023-08-08 | 中国航空综合技术研究所 | In-situ simulation and online diagnosis method for contact failure of electric connector |
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