CN109540664A - Detection method for brittleness band elongation after fracture - Google Patents
Detection method for brittleness band elongation after fracture Download PDFInfo
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- CN109540664A CN109540664A CN201811282183.5A CN201811282183A CN109540664A CN 109540664 A CN109540664 A CN 109540664A CN 201811282183 A CN201811282183 A CN 201811282183A CN 109540664 A CN109540664 A CN 109540664A
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- brittleness
- band
- fracture
- elongation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/28—Investigating ductility, e.g. suitability of sheet metal for deep-drawing or spinning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Adhesive Tapes (AREA)
Abstract
This application discloses a kind of detection methods for brittleness band elongation after fracture, which comprises the steps of: draws gauge length in the parallel section of brittleness band, measures gauge length, and make marks；There is the gluing oxidant layer of the first predetermined thickness in the parallel section covering of brittleness band；Tensile test at room temperature is carried out to brittleness band；After the temperature tension test, by the breaking portion of the brittleness band with being connected together, the axis of breaking portion is made to be in same straight line；After the completion of mating, the gauge length of the brittleness band is measured again；The elongation after fracture of the brittleness band is calculated according to measurement result.The detection method for brittleness band elongation after fracture of the application, can detect the elongation after fracture of brittleness band.
Description
Technical field
The application belongs to aircraft power distribution technical field, in particular to a kind of inspection for brittleness band elongation after fracture
Survey method.
Background technique
The tension test of material is the important means of detection and evaluation material property, is most widely used mechanical property examination
Proved recipe method.The obtained strength of materials of tension test and plastic property data, design and selection, new material for product are ground
System and the buying and examination of material etc. have important application value and reference value.Wherein, elongation after fracture is tension test
Frequently-used data, be reflect material plasticity important indicator.It is disconnected that elongation after fracture refers to that metal material is acted on by external force (pulling force)
When splitting, the length of sample elongation and the percentage of original length.
Especially for some brittleness bands, seem even more important to the detection of its elongation after fracture.
Summary of the invention
The purpose of the application, can be to gold there is provided a kind of detection method for brittleness band elongation after fracture
Belong to the detection that brittle strip carries out elongation after fracture.
This application discloses a kind of detection methods for brittleness band elongation after fracture, include the following steps:
Step 1: the parallel section in brittleness band draws gauge length, gauge length is measured, and make marks；
Step 2: in gluing oxidant layer of the parallel section covering with the first predetermined thickness of brittleness band；
Step 3: carrying out tensile test at room temperature to brittleness band；
Step 4:, by the breaking portion of the brittleness band with being connected together, making to break after the temperature tension test
The axis for splitting part is in same straight line；
Step 5: measuring the gauge length of the brittleness band again after the completion of mating；
Step 6: calculating the elongation after fracture of the brittleness band according to measurement result.
According at least one embodiment of the application, the step 2 further include:
In gluing oxidant layer outer surface, setting has the plastic foil of the second predetermined thickness, or
Before the covering has the gluing oxidant layer of the first predetermined thickness, first it is arranged in gluing oxidant layer outer surface and has
There is the plastic foil of the second predetermined thickness, form adhesive layer, then the adhesive layer is covered to the parallel section of brittleness band.
According at least one embodiment of the application, the gluing oxidant layer or the adhesive layer cover the brittleness
One of surface of the parallel section of band.
According at least one embodiment of the application, the adhesive is selected from least one of following glue: propylene
Acids glue, rubber glue and organic silicon glue.
According at least one embodiment of the application, the material of the plastic foil in following material at least one
Kind: polyethylene, polypropylene, polyformaldehyde and polycarbonate.
At least there are following advantageous effects in the application:
The detection method for brittleness band elongation after fracture of the application, can have no progeny to brittleness band
Elongation is detected.
Detailed description of the invention
Fig. 1 is flow chart of the application for the detection method of brittleness band elongation after fracture.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application implementation clearer, below in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the application
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
In explanation the application, and it should not be understood as the limitation to the application.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall in the protection scope of this application.Under
Face is described in detail embodiments herein in conjunction with attached drawing.
The detection method for brittleness band elongation after fracture of 1 couple of the application is done further in detail with reference to the accompanying drawing
It describes in detail bright.
As shown, specifically may be used this application discloses a kind of detection method for brittleness band elongation after fracture
To include the following steps:
Step 1 S101, gauge length is drawn in the parallel section of brittleness band, measure gauge length, and make marks；Wherein, it puts down
Row part is the scheduled breaking portion when carrying out tensile test at room temperature, and specific gauge length, the method for measuring and making marks can
With referring to the similar approach in other tension tests being currently known, details are not described herein again.
Step 2 S102, gluing oxidant layer of the parallel section covering with the first predetermined thickness in brittleness band；Glue
The material of adhesive layer, which can according to need, is selected as a variety of suitable materials, in the optional embodiment of the application, glue
Stick can be selected from least one of following glue acrylic compounds glue, rubber glue and organic silicon glue.Also,
It is reasonably selected according to the predetermined thickness to gluing oxidant layer, makes the mechanical performance indexs such as its tensile strength to the shadow of brittleness band
It rings negligible.
Step 3 S103, tensile test at room temperature is carried out to brittleness band；Tensile test at room temperature herein can use
The a variety of suitable experimental enviroments and testing equipment being currently known, details are not described herein again.
Step 4 S104, after warm tension test, by the breaking portion of brittleness band with being connected together, make fracture
The axis divided is in same straight line；
After the completion of step 5 S105, mating, the gauge length of the brittleness band after measurement is stretched again.
Step 6 S106, the elongation after fracture that brittleness band is calculated according to measurement result.The calculating of elongation after fracture
Method can be obtained using current conventional Calculation Method, i.e., brittleness band have no progeny gauge length permanent elongation and original gauge length
The ratio between percentage.
The detection method for brittleness band elongation after fracture of the application, can have no progeny to brittleness band
Elongation is detected.
It should be noted that brittleness band leads to its fracture due to own material properties, bearing pulling force
When, fracture location forms rupture, broken material property, and the actual measurement of gauge length is not easy after room-temperature mechanical property test
It realizes.
The influence of disadvantages mentioned above bring is further embodied in, firstly, the breaking part of brittleness band is in fracture moment meeting
Appearance flies phenomenon of spouting, and the direction of these parts that fly to spout is uncontrollable, it is not easy to give for change, cause fracture location material deficiency, make to be broken
Part can not be with being connected together, and it is even more impossible to guarantee that sample axis is in same straight line, gauge length of having no progeny is unable to measure, so as to cause disconnected
Elongation cannot pass through calculating gained afterwards；Secondly, even if the breaking part of brittle strip there is no deficient phenomena, but breaking part
Part is often also apart state, in measurement, need it is artificial these parts with being connected together, this is resulted in
Have no progeny gauge length measurement efficiency it is low and measurement data is not accurate enough, so as to cause resulting elongation after fracture accuracy rate drop is calculated
It is low.
For this purpose, in the detection method for brittleness band elongation after fracture of the application, in step 2 S102,
The parallel section covering of brittleness band has the gluing oxidant layer of the first predetermined thickness；Gluing oxidant layer will not be to brittleness band
The tensile test at room temperature of material impacts, and main is that can reduce brittleness band breaking part in fracture to fly to spout and four points
Five the phenomenon that splitting, had no progeny the measurement accuracy rate and detection efficiency of gauge length to effectively improve brittleness band.
It further, may include the following two kinds situation, the first situation is can be in gluing oxidant layer in step 2 S102
Outer surface setting has the plastics of the second predetermined thickness；Wherein, the material of plastic foil is selected from least one of following material: poly-
Ethylene, polypropylene, polyformaldehyde and polycarbonate.Second situation, can be in adhesive of the covering with the first predetermined thickness
Before layer, first in plastic foil of the gluing oxidant layer outer surface setting with the second predetermined thickness, adhesive layer is formed, then adhesive layer is covered
Cover the parallel section of whole brittleness band.It is understood that the application gluing oxidant layer and plastic foil are under combination appropriate
The adhesive layer of formation can be such as adhesive tape being currently known.
Further, above-mentioned gluing oxidant layer or the adhesive layer cover the parallel section of the brittleness band wherein
The influence of gluing oxidant layer bring to save material, and is further eliminated in one surface.
Below by with the detection method that is used for brittleness band elongation after fracture of the test examples to the application make into
One step explanation.
After detecting certain rotor material Hiper50HS heat treatment for room temperature mechanics properties testing, detection process
It is as follows:
1) same batch of material is used with the room-temperature mechanical property sample after furnace treatment reason and does not cohere adhesive tape and coheres
Gelatin band two states, carry out room-temperature mechanical property test respectively (its specific testing program is consistent when test).
2) successively yield strength, tensile strength and the gauge length of having no progeny of sample after two states test are measured and is counted
It calculates.
The experimental result for comparing two kinds of samples, the result is shown in tables 1.
Table 1: cohering adhesive tape and does not cohere adhesive tape room-temperature mechanical property comparison of test results
As shown in Table 1, two methods tensile strength and yield strength no significant difference, but have no progeny gauge length and elongation of having no progeny
Have very big difference in rate and test period, do not cohere adhesive tape have no progeny gauge length and elongation after fracture discreteness it is big, test period
It is long, and the data discrete type for cohering adhesive tape is small, and test period is short.
It is compared by test of many times, this method can mitigate brittleness band breaking part in fracture and fly to spout and fall apart
The phenomenon that, it has no progeny the measurement accuracy rate and detection efficiency of gauge length to effectively improve brittleness band.
In conclusion the detection method for brittleness band elongation after fracture of the application, can effectively solve brittleness
Both existing problems when strip breaks, to quickly and efficiently be detected to brittle strip elongation after fracture.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
Cover within the scope of protection of this application.Therefore, the protection scope of the application should be with the scope of protection of the claims
It is quasi-.
Claims (5)
1. a kind of detection method for brittleness band elongation after fracture, which comprises the steps of:
Step 1: the parallel section in brittleness band draws gauge length, gauge length is measured, and make marks；
Step 2: in gluing oxidant layer of the parallel section covering with the first predetermined thickness of brittleness band；
Step 3: carrying out tensile test at room temperature to brittleness band；
Step 4:, by the breaking portion of the brittleness band with being connected together, making fracture after the temperature tension test
The axis divided is in same straight line；
Step 5: measuring the gauge length of the brittleness band again after the completion of mating；
Step 6: calculating the elongation after fracture of the brittleness band according to measurement result.
2. the detection method according to claim 1 for brittleness band elongation after fracture, which is characterized in that described
Step 2 further include:
In gluing oxidant layer outer surface, setting has the plastic foil of the second predetermined thickness, or
Before the covering has the gluing oxidant layer of the first predetermined thickness, first in gluing oxidant layer outer surface, setting has the
The plastic foil of two predetermined thickness forms adhesive layer, then the adhesive layer is covered to the parallel section of brittleness band.
3. the detection method according to claim 2 for brittleness band elongation after fracture, which is characterized in that described
Gluing oxidant layer or the adhesive layer cover one of surface of the parallel section of the brittleness band.
4. the detection method according to claim 3 for brittleness band elongation after fracture, which is characterized in that described
Adhesive is selected from least one of following glue:
Acrylic compounds glue, rubber glue and organic silicon glue.
5. the detection method according to claim 4 for brittleness band elongation after fracture, which is characterized in that described
The material of plastic foil is selected from least one of following material:
Polyethylene, polypropylene, polyformaldehyde and polycarbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811282183.5A CN109540664A (en) | 2018-10-31 | 2018-10-31 | Detection method for brittleness band elongation after fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811282183.5A CN109540664A (en) | 2018-10-31 | 2018-10-31 | Detection method for brittleness band elongation after fracture |
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| Publication Number | Publication Date |
|---|---|
| CN109540664A true CN109540664A (en) | 2019-03-29 |
Family
ID=65845562
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811282183.5A Pending CN109540664A (en) | 2018-10-31 | 2018-10-31 | Detection method for brittleness band elongation after fracture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611656A (en) * | 2020-12-14 | 2021-04-06 | 中南大学 | Accurate measurement method for low-temperature elongation of aluminum alloy for aerospace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611656A (en) * | 2020-12-14 | 2021-04-06 | 中南大学 | Accurate measurement method for low-temperature elongation of aluminum alloy for aerospace |
| CN112611656B (en) * | 2020-12-14 | 2024-03-08 | 中南大学 | Accurate measurement method for low-temperature elongation of aluminum alloy for aerospace |
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