ASTM F2508-2012 Standard Practice for Validation Calibration and Certification of Walkway Tribometers Using Reference Surfaces.pdf
《ASTM F2508-2012 Standard Practice for Validation Calibration and Certification of Walkway Tribometers Using Reference Surfaces.pdf》由会员分享,可在线阅读,更多相关《ASTM F2508-2012 Standard Practice for Validation Calibration and Certification of Walkway Tribometers Using Reference Surfaces.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: F2508 12 An American National StandardStandard Practice forValidation, Calibration, and Certification of WalkwayTribometers Using Reference Surfaces1This standard is issued under the fixed designation F2508; the number immediately following the designation indicates the year oforiginal
2、adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice is intended to establish the procedures forvalidation,
3、 calibration, and certification of walkway tribom-eters.1.2 This practice provides a walkway tribometer supplierwith a procedure and suite of reference surfaces to validate hiswalkway tribometer by properly ranking and differentiating thesurfaces.1.3 This practice provides the user of a walkway trib
4、ometerwith a procedure and suite of reference surfaces to testcalibration of his instrument.1.4 This practice provides a procedure through which anentity may certify a walkway tribometer model, signifying thatthe walkway tribometer model has a completed and docu-mented validation and interlaboratory
5、 study.1.5 This practice describes the necessary materials,specifications, and the cleaning process for reference materials,as well as the requirements for the validation of a supplierswalkway tribometer and calibration of a users walkwaytribometer.1.6 This practice applies to walkway tribometers wi
6、thoutreference to the nature of the scale of the readings produced bythem. The scale used in the reports of validation and calibrationmust be the same, and are to be those of the instrument ordefined for the instrument.1.7 The values stated in SI units are to be regarded asstandard. The values given
7、 in parentheses are for informationonly and are not considered standard.1.8 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 and determine t
8、he applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D1349 Practice for RubberStandard Temperatures forTestingD3244 Practice for Utilization of Test Data to DetermineConformance with SpecificationsF1646 Terminology Relating to Safety and Traction forFoo
9、twear3. Terminology3.1 Definitions:3.1.1 For terms used in this practice not identified herein,refer to Terminology F1646.3.1.2 paired t-test, na test of statistical significance basedon the use of students t-distribution and used to compare twosample means (see Appendix X2).3.1.3 supplier, nany ind
10、ividual, agent, company,manufacturer, or organization responsible for the walkwaytribometer prior to receipt by the user. D32443.1.4 test foot, nshoe bottom material or surrogatemounted on the walkway tribometer that comes into contactwith the surface being tested.3.1.5 walkway tribometer, nany appa
11、ratus used to mea-sure the frictional forces acting at an interface between awalkway surface and shoe material.3.1.5.1 DiscussionA judgement of the adequacy of thesefrictional forces acting on a walkway surface/shoe surfaceinterface is the basis for an assessment of slip propertiesrelative to human
12、locomotion.3.2 Definitions of Terms Specific to This Standard:3.2.1 calibration, nthe set of operations that establishes,under specified conditions, the relationship between the valuesobtained by a walkway tribometer and the correspondingsupplier reference values.3.2.2 reference surfaces (RSs), nspe
13、cified materials, iden-tified in Section 7, that have an experimentally demonstrated1This practice is under the jurisdiction of ASTM Committee F13 on Pedestrian/Walkway Safety and Footwear and is the direct responsibility of SubcommitteeF13.10 on Traction.Current edition approved Oct. 15, 2012. Publ
14、ished December 2012. Originallyapproved in 2011. Last previous edition approved in 2011 as F2508 11. DOI:10.1520/F2508-12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, ref
15、er 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 States1slip properties for a select population of pedestrians and serveas references for walkway tribometer measurements.3.2.3 valid
16、ation, nthe set of operations that establishes,under specified conditions, the proper ranking and differentia-tion of reference surfaces by a walkway tribometer.4. Summary of Practice4.1 This practice establishes a procedure to: (1) validatewalkway tribometer models against a human gait-based refer-
17、ence system, and (2) calibrate each individual walkway tribom-eters of a validated model against published suppliers refer-ence values (as defined in 9.1, Eq 4).4.2 This practice provides for validation and calibration ofwalkway tribometers as a means of verifying their relationshipto reference surf
18、aces and verifying a particular device contin-ues to produce consistent results.4.3 The method of ranking walkway surface slip propertiesusing a limited population of ambulating human subjects issupported by a peer-reviewed study.34.4 Validation consists of a series of 40 tests on eachreference surf
19、ace from this practice. A walkway tribometermodel is considered valid if it ranks the four reference surfacesfrom this practice in the proper order with statistically signifi-cant differentiation between results obtained for each surface.Validation is intended to be accomplished for each walkwaytrib
20、ometer model when it is initially introduced and is to beaccomplished by or on behalf of the supplier and madeavailable to each user.4.5 Calibration for a specific walkway tribometer requires aseries of 16 tests on each of the reference surfaces from thispractice. A specific walkway tribometer is co
21、nsidered withincalibration if the bias of the mean test values for each surfacefalls within the 95 % confidence interval for the walkwaytribometer model as established by the validation tests (asdefined in 9.1, Eq 4).5. Significance and Use5.1 To be meaningful, walkway tribometer results mustcorrela
22、te the slip characteristics of a surface or contaminant, orboth, to the actual propensity for human slips. To achieve thisgoal, walkway tribometer models must be validated against astandard with relevance to human ambulation.5.2 This practice prescribes a series of reference surfaceswith known relat
23、ive slip potential ranging from very high tolow (as defined by laboratory conditions only) upon whichwalkway tribometer models can be validated. The relative slippotential of each reference surface was established from humansubject walking trials.35.3 The following should be considered in applying t
24、hevalidation and calibration obtained by this practice:5.3.1 The scientific study upon which the validation processis based was conducted with a select population of youngadults (mean age 26 years) who were free from gait deviationswhile walking in a straight path on a level surface with a meanwalki
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
5000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTMF25082012STANDARDPRACTICEFORVALIDATIONCALIBRATIONANDCERTIFICATIONOFWALKWAYTRIBOMETERSUSINGREFERENCESURFACESPDF

链接地址:http://www.mydoc123.com/p-538873.html