1、Designation: F373 06F373 13Standard Test Method forEmbossed Depth of Resilient Floor Coverings1This standard is issued under the fixed designation F373; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision.Anum
2、ber in parentheses indicates the year of last reapproval.Asuperscriptepsilon () 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 Two important characteristics involved in the manufacture o
3、f resilient flooring relate to the smoothness of the wear surfaceand the hardness of the layers under the wear surface. The surfaces may vary from completely textured areas to portions that areflat but separated by textured areas. This test method covers flooring with these interrupted wear surfaces
4、 which are not supportedby soft, cushioned layers.1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for informationonly.mathematical conversions to SI units that are provided for information only and are not considered standard.1.3 This
5、 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 applicability of regulatorylimitations prior to use.2. Referenced Documents2.
6、1 ASTM Standards:2E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test MethodF141 Terminology Relating to Resilient Floor Coverings3. Terminology3.1 For terminology relating to Resilient Floor Coverings, see Terminology F141.4. Significance4.1 This test method i
7、s designed to measure the vertical distance between any two levels on the face of the flooring, that is,between any two flat areas, between a flat area and any part of a textured area, or between two textured areas. This vertical distancemay be of interest in itself or it may be applied to the quest
8、ions of: (1) how much of the thickness of the flooring is available beforethe pattern is destroyed; or (2) how deep the depressed areas must be before valley printing ink is not walked on in normal traffic.5. Apparatus5.1 The apparatus shall consist of a comparator stand having a flat anvil base at
9、least 6 in. (15 cm) square, equipped with a dialmicrometer graduated to 0.001 in. (0.02 mm), and a hemispherical pressure foot 132 in. (0.80 mm) in diameter. The foot shall exerta force of not more than 1 ozf (0.28 N) at any point in its travel. The force shall be obtained by an appropriate weight.
10、The plungerof the gage shall be perpendicular to the anvil.6. Test Specimen6.1 The specimen shall be a piece of flooring at least 9 by 9 in. (230 by 230 mm).1 This test method is under the jurisdiction ofASTM Committee F06 on Resilient Floor Coverings and is the direct responsibility of Subcommittee
11、 F06.20 on Test Methods- Products Construction/Materials.Current edition approved Oct. 15, 2006May 1, 2013. Published November 2006May 2013. Originally approved in 1973. Last previous edition approved in 20012006 asF37301.06. DOI: 10.1520/F0373-06.10.1520/F0373-13.2 For referencedASTM standards, vis
12、it theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standa
13、rd 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 consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM
14、is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States17. Calibration7.1 The calibration of the gage shall be verified by means of gage blocks or shim stock traceable to national standard of knownthi
15、ckness of the appropriate thickness for the depths being measured.8. Conditioning8.1 Condition the specimens at least 24 h at 73.4 6 3.6F (23 6 2C) and 50 6 5 % relative humidity. Test at the sameconditions.9. Procedure9.1 Select the two types of areas on a specimen that are to be examined.9.2 Zero
16、the gage at a random point on the higher area.9.3 Move the gage to a random spot in the second area and measure the depth.9.4 When measuring on a nominally flat wearing surface, do not place the tip close to a built-up shoulder area around adepressed spot; such a shoulder reading would give an erron
17、eous result.9.5 Make five measurements per specimen scattered at random over the specimen face. Record the measurements to the nearest0.001 in. (0.02 mm).10. Report10.1 Report the average of the five measurements calculated to 0.001 in. (0.02 mm) as the depth between the two types of areasof interes
18、t.10.2 Report the minimum and maximum values obtained.11. Precision and Bias11.1 The number of laboratories, materials, and determinations in this study does meet the minimum requirements fordetermining precision prescribed in Practice E691.COLSPEC/colnum=“3“ align=“center“ colname=“colx3“ This Stud
19、y Practice E691 MinimumLaboratories 6 6Materials 5 4Determinations 5 211.2 Precision, characterized by repeatability, Sr, r, and reproducibility, SR, R has been determined for the materials to be:F373 132COLSPEC/colnum=“6“ align=“center“ colname=“colx6“Materials AverageA SrB SRC rD REMaterial A 14.0
20、7 2.05 2.51 5.74 7.02Material B 17.47 2.25 2.48 6.30 6.95Material C 22.22 1.14 1.42 3.19 3.97Material D 4.08 0.43 0.50 1.20 1.40Material E 14.55 0.76 0.97 2.12 2.71A Average is the numerical average of test results for all replicates from all laboratories.B Sr is the within-laboratory standard devia
21、tion of the average.C r = 2.83 Sr.D SR is the between-laboratory standard deviation of the average.E R = 2.83 SR.11.3 Repeatability (Sr, r)In comparing two average values for the same material obtained by the same operator using the sameequipment on the same day, the means should be judged not equiv
22、alent if they differ by more than the r value for that materialand condition.11.4 Reproducibility (SR, R)In comparing two average values for the same material obtained by different operators usingdifferent equipment on different days, the means should be judged not equivalent if they differ by more
23、than the R value for thatmaterial and condition. (This applies between different laboratories or between different equipment within the same laboratory.)11.5 These judgments will have an approximate 0.95 (95%) probability of being correct. Other materials would be expected togive somewhat different
24、results. For further information on the methodology used in this section or for further clarification, pleaserefer to Practice E691.12. Keywords12.1 embossing; flooring; micrometer; resilient; textureASTM International takes no position respecting the validity of any patent rights asserted in connec
25、tion 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.This standard is subject to revision at any time by the responsib
26、le technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.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 cons
27、ideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your 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 B
28、arr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single 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 website (www.astm.org/COPYRIGHT/).F373 133
