1、Designation: F386 17Standard Test Method forThickness of Resilient Flooring Materials Having FlatSurfaces1This standard is issued under the fixed designation F386; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last re
2、vision. A number in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.1 This test method covers the determinati
3、on of thicknessof resilient nontextile floor coverings including tile and sheethaving flat surfaces. This test method should not be used onmaterials having a foamed layer.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversi
4、ons to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices a
5、nd determine the applica-bility of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom
6、mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2E691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE177 Practice for Use of the Terms Precision and Bias inASTM Test M
7、ethods3. Significance and Use3.1 Measurement of the thickness of the product may berequired for quality control purposes or to ensure compliancewith applicable specifications.4. Apparatus4.1 The apparatus shall consist of a comparator stand havinga flat anvil base at least 6 in. (15 cm) square, equi
8、pped with athickness gage graduated to 0.001 in. (0.02 mm). The gageshall be equipped with a flat presser foot 0.2506 0.01 in. (6.356 0.5 mm) in diameter. The foot shall exert a force of 16 6 0.1ozf (4.45 6 0.03 N) maximum.4.1.1 The contact surfaces of the anvil and the thicknessgage presser foot sh
9、all be parallel within 0.0001 in. (0.003mm).4.1.2 Before placing the micrometer into operation, thesurfaces shall be cleaned so the gage zeros properly.5. Test Specimens5.1 The test specimen shall be a minimum of one tile or a 12by 12-in. (300 by 300-mm) piece of sheet flooring.6. Calibration6.1 Cal
10、ibrate the gage by means of gage blocks or shimstock of known thickness appropriate to the thickness of thematerial being measured.7. Conditioning7.1 Condition the test specimen at least 24 h at 736 3F (236 2C) and 50 6 10 % relative humidity and test in the sameenvironment.8. Procedure8.1 Place the
11、 specimen with the wearing surface upward onthe comparator stand anvil, taking care that the specimen is flatagainst the anvil.8.2 Lower the presser foot gently until it contacts thesurface of the specimen.8.3 Upon contact with the surface, take a reading to thenearest 0.001 in. (0.02 mm) from the g
12、age. Take all measure-ments at least 0.75 in. (19 mm) from any edge of the specimen.8.4 Take a total of five measurements on each specimen, atrandomly selected locations unless otherwise specified.1This test method is under the jurisdiction ofASTM Committee F06 on ResilientFloor Coverings and is the
13、 direct responsibility of Subcommittee F06.20 on TestMethods - Products Construction/Materials.Current edition approved . Published May 2017. Originally approved in 1973.Last previous edition approved in 2011 as F386 11. DOI: 10.1520/F0386-17.2For referenced ASTM standards, visit the ASTM website, w
14、ww.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis
15、international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT
16、) Committee.19. Calculation9.1 Calculate the average thickness of each specimen.10. Report10.1 Report the average thickness of each specimen to thenearest 0.001 in. (0.02 mm).10.1.1 Report the minimum or maximum thickness, or bothif required by the specification.11. Precision and Bias11.1 The precis
17、ion of this test method is based on aninter-laboratory study of ASTM F386 - 02(2008) Standard TestMethod for Thickness of Resilient Flooring Materials HavingFlat Surfaces, conducted in 2009. Each of five laboratoriestested ten different flooring materials. Every “test result”represents the average o
18、f five individual determinations, and allparticipants were asked to report triplicate test results. Exceptfor the limited number of laboratories participating, andmaterials tested, Practice E691 was followed for the design andanalysis of the data; the details are given in anASTM ResearchReport.311.1
19、1 Repeatability Limit (r)Two test results obtainedwithin one laboratory shall be judged not equivalent if theydiffer by more than the “r” value for that material; “r”istheinterval representing the critical difference between two testresults for the same material, obtained by the same operatorusing
20、the same equipment on the same day in the samelaboratory.11.1.1.1 Repeatability limits are listed in Table 1.11.1.2 Reproducibility Limit (R)Two test results shall bejudged not equivalent if they differ by more than the “R” valuefor that material; “R” is the interval representing the criticaldiffere
21、nce between two test results for the same material,obtained by different operators using different equipment indifferent laboratories.11.1.2.1 Reproducibility limits are listed in Table 1.11.1.3 The above terms (repeatability limit and reproduc-ibility limit) are used as specified in Practice E177.1
22、1.1.4 Any judgment in accordance with 11.1.1 and 11.1.2would normally have an approximate 95 % probability of beingcorrect, however the precision statistics obtained in this ILSmust not be treated as exact mathematical quantities which areapplicable to all circumstances and uses. The limited numbero
23、f materials tested and laboratories reporting results guaranteesthat there will be times when differences greater than predictedby the ILS results will arise, sometimes with considerablygreater or smaller frequency than the 95 % probability limitwould imply. Consider the repeatability limit and the
24、repro-ducibility limit as general guides, and the associated probabil-ity of 95 % as only a rough indicator of what can be expected.11.2 BiasAt the time of the study, there was no acceptedreference material suitable for determining the bias for this testmethod, therefore no statement on bias is bein
25、g made.11.3 The precision statement was determined through thestatistical examination of a total of 137 analytical results,submitted by the five participating laboratories, on ten flooringmaterials.A: rubber sheet/tileB: rubber sheet/tileC: rubber tileD: rubber tileE: rubber tileF: rubber tileG: lin
26、oleum sheetH: vinyl tileI: vinyl sheetJ: vinyl composition tile11.4 To judge the equivalency of two test results, it isrecommended to choose the material closest in characteristicsto the test material.12. Keywords12.1 flat surfaces; resilient flooring materials; thickness3Supporting data have been f
27、iled at ASTM International Headquarters and maybe obtained by requesting Research Report RR:F06-1009.TABLE 1 Thickness (inches)Material AverageAxRepeatabilityStandardDeviationSrReproducibilityStandardDeviationSRRepeatabilityLimitrReproducibilityLimitR“A” 0.079 in. (2 mm) 0.07880 0.00048 0.00114 0.00
28、135 0.00320“B” 0.118 in. (3 mm) 0.11808 0.00052 0.00086 0.00145 0.00242“C” 0.138 in. (3.5 mm) 0.13824 0.00056 0.00141 0.00156 0.00395“D” 0.125 in. 0.10468 0.00395 0.00395 0.01105 0.01105“E” 0.130 in. 0.13382 0.00082 0.00225 0.00230 0.00629“F” 0.100 in. 0.10391 0.00079 0.00116 0.00221 0.00324“G” 0.09
29、84 in. 0.09520 0.00106 0.00252 0.00296 0.00706“H” 0.08 in. 0.08211 0.00192 0.00257 0.00538 0.00721“I” 0.125 in. 0.11947 0.00135 0.00180 0.00377 0.00505“J” 0.125 in. 0.12441 0.00108 0.00160 0.00302 0.00449AThe average of the laboratories calculated averages.F386 172ASTM International takes no positio
30、n respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.
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