ASTM E1890-2011 Standard Guide for Validating New Area Reference Skid Measurement Systems and Equipment《对新领域基准滑动阻力测量系统和设备进行验证的标准试验方法》.pdf
《ASTM E1890-2011 Standard Guide for Validating New Area Reference Skid Measurement Systems and Equipment《对新领域基准滑动阻力测量系统和设备进行验证的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM E1890-2011 Standard Guide for Validating New Area Reference Skid Measurement Systems and Equipment《对新领域基准滑动阻力测量系统和设备进行验证的标准试验方法》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E1890 11Standard Guide forValidating New Area Reference Skid Measurement Systemsand Equipment1This standard is issued under the fixed designation E1890; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、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 guide covers validating area reference skid mea-surement systems (ARSMS) and related equipment. Thesesystems have been
3、 used since 1976 to evaluate and correlateTest Method E274 skid measurement systems used primarily asa pavement management tool by state Departments of Trans-portation. Also, this guide provides guidelines for the revali-dation process following the replacement of componentswithin an ARSMS.1.2 This
4、guide is offered as a process to identify andquantify the variables that affect system performance, tominimize the effect of these variables, and to provide a methodof validating a newARSMS to replace an existingARSMS thathas provided quality correlation data for a very long time.1.3 The values stat
5、ed in inch-pound units are to be regardedas the standard since the ARSMS will be compared with statedepartments of transportation systems that all currently useinch-pound units. The values given in parentheses are math-ematical conversions to SI units that are provided for informa-tion only and are
6、not considered standard.1.4 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 the applica-bility of regulatory limitations prio
7、r to use.2. Referenced Documents2.1 ASTM Standards:2E274 Test Method for Skid Resistance of Paved SurfacesUsing a Full-Scale TireE501 Specification for Rib Tire for Pavement Skid-Resistance TestsE556 Test Method for Calibrating a Wheel Force or TorqueTransducer Using a Calibration Platform (User Lev
8、el)E867 Terminology Relating to Vehicle-Pavement SystemsF377 Practice for Calibration of Braking/Tractive Measur-ing Devices for Testing TiresF457 Test Method for Speed and Distance Calibration ofFifth Wheel Equipped With Either Analog or DigitalInstrumentation3. Terminology3.1 Definitions:3.1.1 Ter
9、minology used in this guide conforms to thedefinitions in Terminology E867.4. Summary of Guide4.1 There are three phases to the process of validating newARSMS equipment. Phase One is the calibration of all theequipment and instrumentation to be used in this process.Phase Two addresses the variables
10、associated with the deter-mination of a skid number (SN) and attempts to quantify theimpact that each variable may have upon the accurate deter-mination of an SN. Phase Three is the dynamic validationprocess, based upon the variables confirmed in Phase Two.4.2 The approach is based upon Test Method
11、E274 but withmuch narrower tolerances and greater control of the manypotential variables. The extra effort is required since theproducts are measurement tools which will be used to evaluatethe variety of Test Method E274 systems.4.3 It is anticipated that the SN data produced by the twoexisting ARSM
12、S and the SN data produced by each of the newARSMS will have no significant difference.4.4 The following three-phase procedural guide identifiesthe individual components or pieces, the evaluation process foreach item, and the expected results.5. Significance and Use5.1 Friction characteristics of tr
13、aveled surfaces are moni-tored by skid measurement systems, and the operating proce-dure for the use of these systems is Test Method E274.However, dynamic measurement differences between thesesystems, that comply with the requirements of Test MethodE274, require that each of these systems be correla
14、ted to each1This guide is under the jurisdiction of ASTM Committee E17 on Vehicle -Pavement Systems and is the direct responsibility of Subcommittee E17.21 on FieldMethods for Measuring Tire Pavement Friction.Current edition approved Jan. 1, 2011. Published March 2011. Originallyapproved in 1997. La
15、st previous edition approved in 2006 as E1890 - 06. DOI:10.1520/E1890-11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe A
16、STM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.other system. The most effective approach to accomplish thiscorrelation is to compare each system to a singular, highlyaccurate system, or to a very limited number (two or t
17、hree) ofsystems, in a controlled environment. The ARSMSs weredesigned to be such systems. Fig. 1 depicts a skid measurementsystem and shows the general location of the major compo-nents.5.2 This guide defines the process of ensuring that theARSMSs continue to accomplish their intended purpose.6. App
18、aratus6.1 Voltmeter(s), capable of accurate measurement of linevoltage and dc voltages common in strain gage instrumenta-tion.6.2 Thermometer, to monitor temperature within the truckcab during static calibrations.6.3 Load Cell, National Institute of Science and Technologytraceable, 1000 lb (4448 N)
19、and 2000 lb (8900 N) ranges arerequired in accordance with Practice F377.6.4 Distance/Velocity Measurement System, required in ac-cordance with Test Method F457.6.5 Tachometer, to determine and monitor the speed of thewater pump during calibration of the water system.6.6 Water Volume Measurement Sys
20、tem, to calibrate thewater pumping ability of the water system. Consists of: acollector to capture all water pumped during a fixed timeinterval, a device to measure the volume of water pumped, astopwatch, and a method to operate the water pump at variousspeeds.6.7 Static Water Distribution Gage, SDG
21、, a collector, set atthe roadway level, that is divided into 22 sections of equalwidth,58 in. (16 mm), so that each section catches water fromthe water nozzle and feeds it into a separate reservoir andviewing tube thus allowing the water nozzle distribution to beevaluated.6.8 Multiple-Event Timer, t
22、o determine the cycle time of thewater delivery, brake apply, wheel lock-up, data averaging, andbrake release events. Timer must have an accuracy of 60.001s.6.9 Recorder, to record vehicle speed, 60.1 mph (0.2km/h), versus time.6.10 Infrared Photo-Electric Trigger System, capable ofactivating the br
23、ake apply circuitry in a repeatable manner.7. Phase One7.1 All ARSMSs shall meet all requirements of the currentversion of Test Method E274.7.2 Calibration of the Force Plate and Air Bearing Plat-form:7.2.1 Calibrate both axes of the calibration platform undersimultaneous load conditions in accordan
24、ce with Section 6 ofTest Method F377, with the following modifications:7.2.1.1 Calibrate traction through a range from 0 to 800 lb(3560 N). (See 6.3.4 of Test Method F377.)7.2.1.2 Crosstalk shall be less than 0.5 % of the appliedload. (See 6.3.4 of Test Method F377.)7.2.1.3 Use the reference load ce
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