1、Designation:F38702 (Reapproved 2008) Designation: F387 11Standard Test Method forMeasuring Thickness of Resilient Floor Covering With FoamLayer1This standard is issued under the fixed designation F387; the number immediately following the designation indicates the year of originaladoption or, in the
2、 case of revision, the year of last revision. 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 Department of Defense.1. Scope1.1 This t
3、est method covers the determination of the thickness of resilient non-textile floor coverings containing a foam layeras part of the construction.1.21.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that a
4、re provided for information only and are not considered standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the appl
5、icability of regulatorylimitations prior to use.2. Significance and Use2.1The overall thickness or caliper of resilient flooring is a basic physical property. However, conventional means of measuringthe thickness, such as a hand micrometer or regular dial micrometer, are not applicable for foam-laye
6、r products due to the errorfrom compressing the foam. This test method minimizes this type of measuring error and still retains the convenience and speedof measurement.2.2Measurement of the product thickness may be required for quality control purposes or to ensure compliance with applicablespecific
7、ations. Referenced Documents2.1 ASTM Standards:2E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test MethodE177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods3. Apparatus3.1The apparatus shall consist of a comparator stand having a flat an
8、vil base at least 6 in. (15 cm) square, equipped with athickness gage graduated to 0.001 in. (0.02 mm). The gage shall be equipped with a flat presser foot 0.250 6 0.01 in. (6.35 6 0.5mm) in diameter. The foot shall exert a force of 1 6 0.1 ozf (0.28 6 0.03 N) maximum.3.1.1The contact surfaces of th
9、e anvil and thickness gage presser foot shall be parallel within 0.0001 in. (0.003 mm).Significance and Use3.1 The overall thickness or caliper of resilient flooring is a basic physical property. However, conventional means of measuringthe thickness, such as a hand micrometer or regular dial microme
10、ter, are not applicable for foam-layer products due to the errorfrom compressing the foam. This test method minimizes this type of measuring error and still retains the convenience and speedof measurement.3.2 Measurement of the product thickness may be required for quality control purposes or to ens
11、ure compliance with applicablespecifications.4. Test Specimen4.1The specimen shall be approximately 2 by 4 in. (50 by 100 mm). Apparatus1This test method is under the jurisdiction ofASTM Committee F06 on Resilient Floor Coverings and is the direct responsibility of Subcommittee F06.20 on Test Method
12、s- Products Construction/Materials.Current edition approved Nov. 1, 2008. Published December 2008. Originally approved in 1973. Last previous edition approved in 2002 as F38702. DOI:10.1520/F0387-02R08.Current edition approved March 15, 2011. Published April 2011. Originally approved in 1973. Last p
13、revious edition approved in 2008 as F387 02(2008). DOI:10.1520/F0387-11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the
14、ASTM website.1This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users con
15、sult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.1 The apparatus shall consist of
16、 a comparator stand having a flat anvil base at least 6 in. (15 cm) square, equipped with athickness gage graduated to 0.001 in. (0.02 mm). The gage shall be equipped with a flat presser foot 0.250 6 0.01 in. (6.35 6 0.5mm) in diameter. The foot shall exert a force of 1 6 0.1 ozf (0.28 6 0.03 N) max
17、imum.4.1.1 The contact surfaces of the anvil and thickness gage presser foot shall be parallel within 0.0001 in. (0.003 mm).5. Calibration5.1Calibrate the gage by means of gage blocks or shim stock of known thickness appropriate to the thickness of the materialbeing measured. Test Specimen5.1 The sp
18、ecimen shall be approximately 2 by 4 in. (50 by 100 mm).6. Conditioning6.1Condition the specimens at least 24 h at 73 6 3F (23 6 2C) and 50 6 5% relative humidity and test in the sameenvironment. Calibration6.1 Calibrate the gage by means of gage blocks or shim stock of known thickness appropriate t
19、o the thickness of the materialbeing measured.7. Procedure7.1Level the instrument.7.2Clean the anvil and the presser foot surfaces.7.3Zero the instrument by allowing the presser foot to rest on the anvil.7.4Select an unembossed flat area that is substantially larger, if possible, than the presser fo
20、ot and at least 0.75 in. (19 mm) fromany edge of the specimen.7.5Raise the presser foot and insert the test specimen with the wearing surface down.7.6Lower the foot slowly to rest on the specimen without impacting it.7.6.1Hold the specimen flat taking precautions not to compress it in the vicinity o
21、f the foot.7.7Upon contact with the surface, take a reading from the gage to the nearest 0.001 in. (0.02 mm). Take all measurements atleast 0.75 in. (19 mm) from any edge of the specimen.7.8Take five measurements per specimen distributed evenly across the length of the specimen unless otherwise spec
22、ified.Conditioning7.1 Condition the specimens at least 24 h at 73 6 3F (23 6 2C) and 50 6 5 % relative humidity and test in the sameenvironment.8. Calculation8.1Calculate the average thickness of each specimen. Procedure8.1 Level the instrument.8.2 Clean the anvil and the presser foot surfaces.8.3 Z
23、ero the instrument by allowing the presser foot to rest on the anvil.8.4 Select an unembossed flat area that is substantially larger, if possible, than the presser foot and at least 0.75 in. (19 mm)from any edge of the specimen.8.5 Raise the presser foot and insert the test specimen with the wearing
24、 surface down.8.6 Lower the foot slowly to rest on the specimen without impacting it.8.6.1 Hold the specimen flat taking precautions not to compress it in the vicinity of the foot.8.7 Upon contact with the surface, take a reading from the gage to the nearest 0.001 in. (0.02 mm). Take all measurement
25、s atleast 0.75 in. (19 mm) from any edge of the specimen.8.8 Take five measurements per specimen distributed evenly across the length of the specimen unless otherwise specified.9. Report9.1Report the average thickness of each specimen to the nearest 0.001 in. (0.02 mm).9.2Report the minimum and maxi
26、mum thickness, or both if required by specification. Calculation9.1 Calculate the average thickness of each specimen.10. Precision and Bias10.1Precision and Bias are being determined by interlaboratory study in compliance with ASTM specifications. Report10.1 Report the average thickness of each spec
27、imen to the nearest 0.001 in. (0.02 mm).10.2 Report the minimum and maximum thickness, or both if required by specification.11. Precision and Bias11.1 The precision of this test method is based on an inter-laboratory study of ASTM F387 - 02(2008) Standard Test Methodfor Measuring Thickness of Resili
28、ent Floor Covering with Foam Layer, conducted in 2009/2010. Each of five laboratories testedF387 112seven different flooring materials. Every “test result” represents the average of five individual determinations, and all participantsreported triplicate test results. Except for the limited number of
29、 laboratories participating, and materials tested, Practice E691 wasfollowed for the design and analysis of the data; the details are given in an ASTM Research Report.311.1.1 Repeatability Limit (r)Two test results obtained within one laboratory shall be judged not equivalent if they differ bymore t
30、han the “r” value for that material; “r” is the interval representing the critical difference between two test results for the samematerial, obtained by the same operator using the same equipment on the same day in the same laboratory.11.1.1.1 Repeatability limits are listed in Table 1.11.1.2 Reprod
31、ucibility Limit (R)Two test results shall be judged not equivalent if they differ by more than the “R” value forthat material; “R” is the interval representing the critical difference between two test results for the same material, obtained bydifferent operators using different equipment in differen
32、t laboratories.11.1.2.1 Reproducibility limits are listed in Table 1.11.1.3 The above terms (repeatability limit and reproducibility limit) are used as specified in Practice E177.11.1.4 Any judgment in accordance with 11.1.1 and 11.1.2 would normally have an approximate 95 % probability of beingcorr
33、ect, however the precision statistics obtained in this ILS must not be treated as exact mathematical quantities which areapplicable to all circumstances and uses. The limited number of materials tested and laboratories reporting results guarantees thatthere will be times when differences greater tha
34、n predicted by the ILS results will arise, sometimes with considerably greater orsmaller frequency than the 95 % probability limit would imply. Consider the repeatability limit and the reproducibilty limit asgeneral guides, and the associated probability of 95 % as only a rough indicator of what can
35、 be expected.11.2 BiasAt the time of the study, there was no accepted reference material suitable for determining the bias for this testmethod, therefore no statement on bias is being made.11.3 The precision statement was determined through the statistical examination of a total of 105 analytical re
36、sults, submittedby the five participating laboratories, on seven flooring materials.A: rubber sheetB: vinyl sheetC: vinyl sheetD: rubber tileE: vinyl sheetF: vinyl sheetG: vinyl tile11.4 To judge the equivalency of two test results, it is recommended to choose the material closest in characteristics
37、 to the testmaterial.12. Keywords11.1foam12.1 foam layer; resilient flooring materials; thicknessASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determi
38、nation of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or wi
39、thdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that y
40、our comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (si
41、ngle or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM websi
42、te (www.astm.org/COPYRIGHT/).3Supporting data have been filed at ASTM International Headquarters and may be obtained by requesting Research Report RR:F06-1010.TABLE 1 Thickness (inches)Material AverageAxRepeatabilityStandardDeviationSrReproducibilityStandardDeviationSRRepeatabilityLimitrReproducibil
43、ityLimitR“A” 0.16 in. (4.0 mm) 0.1597 0.0014 0.0026 0.0040 0.0072“B” 0.100 in. 0.0985 0.0011 0.0022 0.0032 0.0062“C” 0.197 in. 0.1989 0.0017 0.0031 0.0048 0.0088“D” 0.185 in. 0.1902 0.0005 0.0023 0.0015 0.0064“E” 0.13 in. 0.1383 0.0010 0.0035 0.0028 0.0099“F” 0.299 in. 0.3024 0.0019 0.0031 0.0052 0.0088“G” 0.056 in. 0.0571 0.0007 0.0021 0.0018 0.0058AThe average of the laboratories calculated averages.F387 113
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