CN109142637A - A kind of material smell is to part assembly smell contribution rate appraisal procedure - Google Patents
A kind of material smell is to part assembly smell contribution rate appraisal procedure Download PDFInfo
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- CN109142637A CN109142637A CN201811078540.6A CN201811078540A CN109142637A CN 109142637 A CN109142637 A CN 109142637A CN 201811078540 A CN201811078540 A CN 201811078540A CN 109142637 A CN109142637 A CN 109142637A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
- G01N33/0032—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array using two or more different physical functioning modes
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Abstract
The present invention is suitable for automobile smell and manages technical field, discloses a kind of material smell to the appraisal procedure of part assembly smell contribution rate, comprising: S1, obtain part assembly and component part assembly each material odoring substance and odoring substance concentration；S2, the intensity for calculating various odoring substances in each material of part assembly and component part assembly；S3, the weight that various odoring substances contribute part assembly smell is calculated；S4, it is directed to every kind of odoring substance, calculates separately each material for the smell contribution rate of the odoring substance；S5, each material is calculated for the smell contribution rate of part assembly.The present invention can quantitatively describe each material for the smell contribution rate of part assembly, each material is accurately described to contribute the smell of part assembly, it can thus be appreciated that the rectification sequence of each material, specify the rectification direction for improving in-car smell, or the Materials Selection of subsequent vehicle provides direction.
Description
Technical field
The invention belongs to automobile smells to manage field, provide a kind of material smell and assess part assembly smell contribution rate
Method.
Background technique
Investigate and find according to J.D.POWER: it is most tight that " offensive odour " becomes the Chinese new car quality of 2015-2016
The problem of weight.Currently, consumer and media also show an increasing trend year by year the attention rate of in-car smell, vehicle factor is that should offset
The person of expense complains or complains, and takes a large amount of human and material resources and rectifies and improves to vehicle progress smell.
It is well known that vehicle was made of multiple part assemblies, smell rectification is carried out to vehicle and is first had to first to part
Assembly carries out smell rectification, and each part assembly is made of a variety of materials, and carries out smell rectification to part assembly, first
First to judge whether every kind of material smell is qualified or every kind of material of judge is to the contribution rate size of part assembly smell, look for rectification
Direction.
Currently, whether qualified to every kind of material in the industry have a set of evaluation method, i.e., a certain amount of sample deflation taste
In bottle, heat at a set temperature after a certain period of time, five people give a mark respectively to be averaged, and is then rounded up, is taken end value.
There is half grade of difference between each numerical value, such as: 3 grades, 3.5 grades and 4 grades.Adopt this method happiness of the evaluation result not only with individual
Good and operation class (of an amplifying stage) etc. has much relations, with certain subjectivity；And the material Sampling Area size of such test method
Unanimously, although the smell test result grade of certain material is high, when usable floor area is smaller in components for it, to zero
The smell contribution of part assembly be it is small, this method is possible to mislead rectification direction, at the same this method be only capable of be to material smell
No qualification makes judge, and the material big to odor profiles grade differential is distinguished well, and the material little to odor profiles grade differential is difficult
It distinguishes, evaluation can not be made to smell contribution rate of the every kind of material to part assembly.Currently, how to assess every kind of material to part
The smell contribution rate or industry a great problem of assembly.
Summary of the invention
The embodiment of the invention provides a kind of material smells to the appraisal procedure of part assembly smell contribution rate, it is intended to quantitative
Every kind of material of assessment to the smell contribution rate of part assembly, accurately describe each material the smell of part assembly is contributed it is big
It is small, the rectification direction for improving in-car smell is accurately specified, also provides direction for the Materials Selection of subsequent vehicle.
The invention is realized in this way a kind of material smell is to part assembly smell contribution rate appraisal procedure, this method packet
Include following steps:
The odoring substance of each material of S1, acquisition part assembly and component part assembly and the concentration of odoring substance；
S2, the intensity for calculating various odoring substances in each material of part assembly and component part assembly；
S3, the weight that various odoring substances contribute part assembly smell is calculated；
S4, it is directed to every kind of odoring substance, calculates separately out a variety of materials for the smell contribution rate of the odoring substance；
S5, each material is calculated for the smell contribution rate of part assembly.
Further, the step S1 specifically comprises the following steps:
S11, each material on part assembly is sampled, sample is respectively put into and is of moderate size and the identical survey of volume
It tries in bag one, and part assembly is put into the test bag two being of moderate size；The sampling method of part and the size of test bag can
With reference to each company's relevant enterprise standard.
S12, the test bag one equipped with material sample and the test bag two equipped with part assembly are toasted at a set temperature
Duration is set, after baking, the gas in test bag is acquired；
S13, GC-O-MS test and ten is carried out to the gas of each material of collected part assembly and component part assembly
Eight aldehyde ketones test, to obtain the odorant concentration of each material of part assembly and component part assembly；
The concentration of various odoring substances in S14, amendment material.
Further, the step S14 specifically comprises the following steps:
S141, the odorant concentration adjusted coefficient K for calculating each material, the calculating side of odorant concentration adjusted coefficient K
Method is as follows:
K=S/S '
Wherein, S is usable floor area of the material in part assembly, and S' is the odor dispersion face of material during the test
Product；
The concentration of various odoring substances, modification method are as follows in S142, each material of amendment:
F '=F × K
Wherein, F' is that concentration value, F are each gas for testing specimen material in bag after the amendment of various odoring substances in each material
The concentration value of taste substance.
Further, the step S2 specifically comprises the following steps:
Various odoring substance olfact T are searched in S21, test；
S22, the intensity U that various odoring substances in material are calculated based on olfactMaterialAnd each smell object in part assembly
Matter intensity UAssembly, calculation formula is specific as follows:
UMaterial=F '/T
UAssembly=F/T
Wherein, F is each odorant concentration value of part assembly, and F' is each smell object in each material of component part assembly
The revised concentration value of matter
Further, the step S3 calculates the weight X that various odoring substances contribute part assembly smelliCalculating it is public
Formula is specific as follows:
In which it is assumed that m kind odoring substance, U are tested out in part assembly altogetherAssembly iFor the intensity of i-th kind of odoring substance, XiFor
The weight that i-th kind of odoring substance contributes part assembly smell.
Further, the step S4 is for i-th kind of odoring substance, and y kind material is to i-th kind of odoring substance smell
Contribution rate PiyCalculation formula is specific as follows:
Where it is assumed that a total of n kind material, U in partMaterial iySmell for i-th kind of odoring substance in y kind material is strong
Degree.
Further, contribution rate α of each material to part assembly smellyCalculation formula it is specific as follows:
Wherein m is the odoring substance species number in part assembly, XiPart smell is contributed for i-th kind of odoring substance
Weight, PiyIt is y kind material to the contribution rate of i-th kind of odoring substance smell.
The contribution rate that the present invention quantitatively can describe each material and correspond to part assembly smell, accurately describes each material
Smell contribution to part assembly, it can thus be appreciated that the rectification sequence of each material, specifies the rectification direction for improving in-car smell,
Direction can be provided for the Materials Selection of subsequent vehicle.
Furthermore, it is possible to although it is high to be effectively prevented from certain material oder levels, because its in components usable floor area compared with
It is small, it is smaller to the smell contribution rate of part assembly, if it is little to be rectified and improved the odor profiles improvement to part assembly to the material
Defect.
Detailed description of the invention
Fig. 1 is material smell provided in an embodiment of the present invention to part assembly smell contribution rate appraisal procedure flow chart.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 is material smell provided in an embodiment of the present invention to part assembly smell contribution rate appraisal procedure flow chart, should
Method includes the following steps:
The odoring substance and odorant concentration of each material of S1, acquisition part assembly and component part assembly；
In embodiments of the present invention, step S1 specifically comprises the following steps:
S11, the material on part assembly is sampled, and sample is respectively put into be of moderate size can accommodates the material
In the identical test bag one of volume, part assembly is put into test bag two.
Material sampling method are as follows: 25mm- planarization material in homogeneous thickness is less than to thickness (h), interception 10cm*20cm* is thick
Spend the exemplar size of h；Material (such as laminated construction or seat PU foaming) for thickness greater than 25mm, should be from its exposed surface depth
It digs to 25mm thickness, Sampling Area 10cm*20cm.It is too small for part area or can not be cut out from components complete
When 10cm*20cm exemplar, then specimen material is put into 10L test bag one by whole sampling, and appearance faces upward, and part is total
It is tested in bag two at 2000L is put into.
S12, the test bag one equipped with material and the test bag two equipped with part assembly are toasted into 2h at 60 DEG C, toasted
Cheng Hou is acquired test bag one and the gas tested in bag two, and specific sack requires and acquisition method is according to ISO
12219-2:2012 (E) " airbag method: the measuring method of the volatile organic compounds burst size of automotive upholstery and material " is held
Row；
S13, GC-O-MS test is carried out to the collected gas of part assembly, and (i.e. the full spectrum analysis of GS-MS and smell are smelt and debate survey
Examination) and arbricolin ketone test, and to component part it is each it is acquired for materials to gas do GC-MS test arbricolin ketone test, it is next
Obtain the odorant concentration of each material of part assembly and component part assembly；
S14 corrects the concentration of various odoring substances in material；
In embodiments of the present invention, step S14 specifically comprises the following steps:
S141, the odorant concentration adjusted coefficient K for calculating each material, the calculating side of odorant concentration adjusted coefficient K
Method is as follows:
K=S/S '
Wherein, S is usable floor area of the material in the part assembly, unit cm2, S' be material during the test
Odor dispersion area, unit cm2；
The concentration of various odoring substances, modification method are as follows in S142, each material of amendment:
F '=F × K
Wherein, F' is concentration value after the amendment of the various odoring substances of each material of component part assembly, and F is in test bag
Each odorant concentration value of specimen material.
S2, the intensity for calculating various odoring substances in each material of part assembly and component part assembly；
In embodiments of the present invention, the calculation method of the intensity of various odoring substances is specific as follows:
Various odoring substance olfact T are searched in S21, test；
S22, the intensity that various odoring substances are calculated based on olfact, the strength calculation formula of various odoring substances are specific
It is as follows:
UMaterial=F '/T
UAssembly=F/T
Wherein, UMaterialFor each odoring substance intensity of each material of component part assembly, UAssemblyFor each smell of part assembly
Material intensity, F are each odorant concentration value of part assembly, and F' is that each odoring substance is repaired in each material of component part assembly
Concentration value after just.
S3, the weight that various odoring substances contribute part assembly smell is calculated；
It is assumed that testing out m kind odoring substance in part assembly altogether, then various odoring substances contribute part assembly smell
Weight XiCalculation formula is as follows:
Wherein, UAssembly iFor the intensity of the i-th class odoring substance, XiPart assembly smell is contributed for the i-th class odoring substance
Weight.
S4, it is directed to every kind of odoring substance, calculates separately each material for the smell contribution rate of the odoring substance；
In embodiments of the present invention, for the i-th class odoring substance, y kind material is to the i-th class odoring substance smell
Contribution rate PiyCalculation formula is specific as follows:
Where it is assumed that a total of n kind material, U in partMaterial iySmell for the i-th class odoring substance in y kind material is strong
Degree.
S5, each material contribution rate α odor profiles for part assembly is calculatedy。
In embodiments of the present invention, contribution rate α of each material to part assembly smellyCalculation formula it is specific as follows:
The present invention can quantitatively describe each material for the smell contribution rate of part assembly, accurately describe each material
For the smell contribution of part assembly, it can thus be appreciated that the rectification sequence of each material, specifies the rectification for improving in-car smell
Direction, or the Materials Selection of subsequent vehicle provides direction.
Furthermore, it is possible to although it is high to be effectively prevented from certain material oder levels, because its in components usable floor area compared with
It is small, it is smaller to the smell contribution rate of part assembly, if it is little to be rectified and improved the odor profiles improvement to part assembly to the material
Defect.
The present invention is illustrated by taking heel row seat assembly as an example, and the method provided according to an embodiment of the present invention forms to calculate
Contribution of each material of back seat to back seat assembly smell.
1) GC-O-MS test (i.e. the full spectrum analysis of GC-MS and smell are smelt and debate test) and 18 is carried out to back seat assembly
Aldehyde ketone test carries out the full spectrum analysis of GC-MS after separately sampled to the material of composition back seat assembly and arbricolin ketone is tested, obtains
1 is shown in Table to various odoring substances and its concentration F, concrete outcome.
1 back seat assembly of table, the odorant concentration test result for forming back seat assembly specimen material
2) concentration of various odoring substances in each material is corrected.
21) correction factor of each material is calculated；
By taking foamed material as an example, it is 5424cm that foam actually uses area in back seat2, foam material in test process
The diverging area of material is 1700cm2, therefore its adjusted coefficient KFoam=5424 ÷ 1700=3.19.Each material is in seat assembly
Actual use area S, the odor dispersion area S' in test and correction factor are shown in Table 2.
The correction factor of a variety of materials of 2 back seat of table
| Material category | Foam | Saucer | Grey cloth | Black wool felt | Leather |
| Test area S'(cm2) | 1700.00 | Real area | 200.00 | 200.00 | 200.00 |
| Real area S (cm2) | 5424.00 | Real area | 840.00 | 2016.00 | 5424.00 |
| Adjusted coefficient K | 3.19 | 1.00 | 4.20 | 10.08 | 27.12 |
22) the various revised concentration values of odoring substance in a variety of materials are calculated；
The adjusted coefficient K of foamed material is 3.19, and wherein the test concentrations F of trichloro ethylene is 1528.83 in foam, so
The concentration F'=1528.83*3.19=4876.96 of trichloro ethylene in foam.All kinds of smell objects in each material are similarly calculated
The revised concentration value of matter, is specifically shown in Table 3.
Table 3: all kinds of odorant concentration values in a variety of materials of back seat
3) intensity of each odoring substance in back seat assembly is calculated；
The concentration value F of trichloro ethylene is 2052.55mg/m3 in back seat assembly, through the olfact for searching trichloro ethylene
For 3.09mg/m3, so in back seat assembly trichloro ethylene odour intensity U=2052.55 ÷ 3.09=526.29, similarly
The odour intensity of various odoring substances in back seat assembly and each material of composition back seat assembly, concrete outcome is calculated
It is shown in Table 4.
Table 4: the odour intensity of various odoring substances in back seat assembly and a variety of materials
4) all kinds of odoring substances contribution weight odor profiles for back seat assembly is calculated
For trichloro ethylene, contribution weight X=U of the trichloro ethylene to back seat assemblyTrichloro ethylene÷(UTrichloro ethylene+UToluene+
UN,N-dimethylformamide+UDimethylbenzene+……+UHexadecane÷ (the 526.29+65060.61+55239.07+2574571.43+ of)=526.29
118157.89+265.43+277.43+1337493.52+644.36+265494.55+612757.31+230941.77+
2724446.83+45311.44)=0.00007, similarly calculates the weighing factor of remaining various odoring substance, concrete outcome is shown in
Table 5.
Table 5: odor impact weight of the various odoring substances to seat assembly in back seat assembly
| Odoring substance | Weighing factor X |
| Trichloro ethylene | 0.00007 |
| Toluene | 0.00810 |
| N,N-dimethylformamide | 0.00688 |
| Dimethylbenzene | 0.32057 |
| Styrene | 0.01471 |
| Propyl benzene | 0.00003 |
| Decane | 0.00003 |
| Triethylene diamine | 0.16654 |
| N-Methyl pyrrolidone | 0.00008 |
| 4- nonanone | 0.03306 |
| Terpinolene | 0.07630 |
| 2,6- di-t-butyl Pyrogentisinic Acid | 0.02876 |
| 2,2,4- trimethyl -1,3- pentanediol diisobutyrate | 0.33923 |
| Hexadecane | 0.00564 |
5) it is directed to every kind of odoring substance, calculates separately out a variety of materials of composition back seat assembly for the smell object
The smell contribution rate P of mattery。
For trichloro ethylene, the contribution rate P of foamed materialTrichloro ethylene=UFoaming÷(UFoaming+USaucer+UGrey cloth+UBlack wool felt+ULeather)=
1250.50 ÷ (1250.50+0.00+733.58+176.05+0.00)=0.58 similarly calculate composition back seat assembly
For a variety of materials for the smell contribution rate of every kind of odoring substance, concrete outcome is shown in Table 6.
Table 6: smell contribution rate of a variety of materials of composition back seat assembly for every kind of odoring substance
6) contribution rate α of a variety of materials for back seat assembly smell of composition heel row seat assembly is calculated,
The foamed material contribution rate α=P odor profiles for back seat assemblyTrichloro ethylene*XTrichloro ethylene+PToluene*XToluene+
PN,N-dimethylformamide*XN,N-dimethylformamide+......+PHexadecane*XHexadecane=0.58 × 0.0007+0.36 × 0.00810+0.17 ×
0.00688+......+0.06 × 0.00564=0.40 similarly calculates all material of composition back seat assembly for heel row
The odor profiles contribution rate of seat assembly, concrete outcome are shown in Table 7.
Table 7: all material of the composition back seat assembly contribution rate odor profiles for back seat assembly
From the result of table 7, we can see that smell contribution rate of each material of composition seat assembly to seat assembly
Sequence from big to small is: foam and leather are 40% to the smell contribution rate of seat assembly, be ranked first side by side；Black wool felt is to seat
The contribution rate of the smell of chair assembly is 8%, be ranked second；Grey cloth is 7% to the smell contribution rate of seat assembly, be ranked third；Cup
Support is 5% to the smell contribution rate of seat assembly, and row is last.Therefore evaluation method through the invention, we may determine that: bubble
Foam material and the leather substance contribution rate odor profiles for seat assembly are maximum, both materials are for the odor profiles of seat assembly
Maximum is influenced, should pay close attention to, rectify and improve at first.It should be replaceable other as far as possible less with both materials in subsequent parts selection
The smell contribution rate of the trade mark or formula small foam and leather substance.
The positive effect of the present invention is: offer closes the method for the smell contribution rate of part assembly for evaluating material
It manages, effectively, can achieve the purpose that more accurately to indicate that smell rectifies and improves direction；Efficiently solve certain material of component part
Although it is high to test grade, because usable floor area is smaller in part assembly for it, and rectification direction bring is misled；Solve as
What judges every kind of material to the problem in the industry of part assembly smell contribution rate size；It can smell tribute to material to part assembly
The rate size of offering accurately is sorted；Can to material rectification sequence be ranked up.
In order to prove the science of this patent, choose smell maximum part of certain smell compared with cart --- back seat and
The material of back seat is formed as research object.Its test result is calculated using the calculation method of this patent first,
Foamed material smell contribution rate is obtained by calculation and is up to 41%, locking foamed material is to influence back seat assembly smell
Critical material.This result is verified by other three kinds of methods simultaneously:
Method one, the material of composition back seat assembly, clip same area size is put into odor bottle respectively, is being dried
In case under certain temperature heat a period of time, choose 5 smell valuation officers and its result evaluated, by evaluation result into
The grading system highest of row statistical analysis discovery foamed material, is the critical material for influencing smell；
Method two debates test and to the material of composition seat by smelling to the seat assembly progress full spectrum analysis+smell of GC-MS
The full spectrum analysis of GC-MS is carried out, seat assembly GC-MS map is chosen, qualitative analysis obtains content and comes TOP10 odoring substance, and
It passes sequentially through retention time and qualitative analysis is carried out to the material of composition seat.The results show that the smell object that foamed material gives out
The substance matching highest for the odoring substance that matter and back seat assembly give out, foamed material are to influence seat assembly smell
Critical material；
Method three is verified by material odor types and the odor types similarity of part assembly.Back seat
Assembly is put into the polytetrafluoroethylene (PTFE) sack being sized for, and specific sack requires, purification method refers to ISO12219-2:2012
(E) " airbag method: the measuring method of the volatile organic compounds burst size of automotive upholstery and material " executes, and back seat is total
At smell be damp taste+foam taste, the odor types matching degree highest of foamed material and back seat assembly.
The critical material of the influence smell found by three of the above method validation is consistent with the result that this patent obtains, all
It is foamed material.Discovery is matched with the odoring substance of composition back seat assembly by the odoring substance given out to back seat
Only contain triethylene diamine odoring substance in foamed material and back seat assembly, in the materials of other composition seat assemblies not
It was found that contain triethylene diamine, and triethylene diamine has ammonia taste, is the catalyst of polyurethane foamed material, has very typical
Similar foam smell, and the test result of more seats is shown, the substance frequency of occurrence is very high, largely may be shadow
The chemical component for ringing seat assembly smell, then rectifies and improves it, triethylene diamine foaming agent is changed to other foaming agents,
Foamed material smell improves, and the rectification of seat assembly smell is qualified.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of material smell is to the appraisal procedure of part assembly smell contribution rate, which is characterized in that the method includes as follows
Step:
The odoring substance of each material of S1, acquisition part assembly and component part assembly and the concentration of odoring substance；
S2, the intensity for calculating various odoring substances in each material of part assembly and component part assembly；
S3, the weight that various odoring substances contribute part assembly smell is calculated；
S4, it is directed to every kind of odoring substance, calculates separately out a variety of materials for the smell contribution rate of the odoring substance；
S5, each material is calculated for the smell contribution rate of part assembly.
2. material smell as described in claim 1 is to the appraisal procedure of part assembly smell contribution rate, which is characterized in that the step
Rapid S1 specifically comprises the following steps:
S11, each material on part assembly is sampled, sample is respectively put into and is of moderate size and the identical test bag of volume
In one, and part assembly is put into the test bag two being of moderate size；
S12, all test bags containing material sample or part are toasted to setting duration at a set temperature, after baking,
Gas in test bag is acquired；
S13, GC-O-MS test and arbricolin ketone are carried out to the gas of each material of collected part assembly and composition components
Test, to obtain the odorant concentration of each material of part assembly and component part assembly；
The concentration of various odoring substances in S14, amendment material.
3. material smell as claimed in claim 2 is to the appraisal procedure of part assembly smell contribution rate, which is characterized in that the step
Rapid S14 specifically comprises the following steps:
S141, the odorant concentration adjusted coefficient K for calculating each material, the calculation method of odorant concentration adjusted coefficient K is such as
Under:
K=S/S '
Wherein, S is usable floor area of the material in part assembly, and S' is the odor dispersion area of material during the test；
The concentration of various odoring substances, modification method are as follows in S142, each material of amendment:
F '=F × K
Wherein, F' is that concentration value, F are each smell object for testing specimen material in bag after the amendment of various odoring substances in each material
Matter concentration value.
4. material smell as described in claim 1 is to the appraisal procedure of part assembly smell contribution rate, which is characterized in that the step
Rapid S2 specifically comprises the following steps:
Various odoring substance olfact T are searched in S21, test, and olfact T refers to the Cmin of the perceived smell of people；
S22, the intensity U that various odoring substances in material are calculated based on olfactMaterialAnd each odoring substance in part assembly is strong
Spend UAssembly, calculation formula is specific as follows:
UMaterial=F '/T
UAssembly=F/T
Wherein, F is each odorant concentration value of part assembly, and F' is that each odoring substance is repaired in each material of component part assembly
Concentration value after just.
5. material smell as described in claim 1 is to the appraisal procedure of part assembly smell contribution rate, which is characterized in that the step
Rapid S3 calculates the weight X that various odoring substances contribute part assembly smelliCalculation formula it is specific as follows:
In which it is assumed that m kind odoring substance, U are tested out in part assembly altogetherAssembly iFor the intensity of i-th kind of odoring substance of part assembly,
XiThe weight contributed for i-th kind of odoring substance for part assembly smell.
6. material smell as described in claim 1 is to the appraisal procedure of part assembly smell contribution rate, which is characterized in that the step
Rapid S4 is for i-th kind of odoring substance, contribution rate P of the y kind material to i-th kind of odoring substance smelliyCalculation formula is specific
It is as follows:
Where it is assumed that a total of n kind material, U in partMaterial iyFor the odour intensity of i-th kind of odoring substance in y kind material.
7. material smell as described in claim 1 is to the appraisal procedure of part assembly smell contribution rate, which is characterized in that each material
To the contribution rate α of part assembly smellyCalculation formula it is specific as follows:
Wherein, m is the odoring substance species number in part assembly, XiThe power contributed for the i-th class odoring substance for part smell
Weight, PiyIt is y kind material to the contribution rate of the i-th class odoring substance smell.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN115267083A (en) * | 2022-08-03 | 2022-11-01 | 广电计量检测（天津）有限公司 | Method for determining key odor substances in non-metallic material |
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