ASTM E1890-2001(2006) Standard Guide for Validating New Area Reference Skid Measurement Systems and Equipment《验证新领域参考滑动测量系统和设备的标准指南》.pdf
《ASTM E1890-2001(2006) Standard Guide for Validating New Area Reference Skid Measurement Systems and Equipment《验证新领域参考滑动测量系统和设备的标准指南》.pdf》由会员分享,可在线阅读,更多相关《ASTM E1890-2001(2006) Standard Guide for Validating New Area Reference Skid Measurement Systems and Equipment《验证新领域参考滑动测量系统和设备的标准指南》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E 1890 01 (Reapproved 2006)Standard Guide forValidating New Area Reference Skid Measurement Systemsand Equipment1This standard is issued under the fixed designation E 1890; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisio
2、n, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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. T
3、hesesystems have been used since 1976 to evaluate and correlateTest Method E 274 skid measurement systems used primarilyas a pavement management tool by state Departments ofTransportation. Also, this guide provides guidelines for therevalidation process following the replacement of componentswithin
4、an ARSMS.1.2 This 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
5、.3 The values stated 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 SI values given in parentheses areprovided for information only.1.4 This standard does not purport t
6、o 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 prior to use.2. Referenced Documents2.1 ASTM Standards:2E 274 Te
7、st Method for Skid Resistance of Paved SurfacesUsing a Full-Scale TireE 501 Specification for Rib Tire for Pavement Skid-Resistance TestsE 556 Test Method for Calibrating a Wheel Force or TorqueTransducer Using a Calibration Platform (User Level)E 867 Terminology Relating to Vehicle-Pavement Systems
8、F 377 Practice for Calibration of Braking/Tractive Measur-ing Devices for Testing TiresF 457 Test Method for Speed and Distance Calibration ofFifth Wheel Equipped With Either Analog or DigitalInstrumentation3. Terminology3.1 Definitions:3.1.1 Terminology used in this guide conforms to thedefinitions
9、 in Terminology E 867.4. 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 associated with the deter-mination of a skid number (
10、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 E 274 but withmuch narrower tolerances and greater co
11、ntrol of the manypotential variables. The extra effort is required since theproducts are measurement tools which will be used to evaluatethe variety of Test Method E 274 systems.4.3 It is anticipated that the SN data produced by the twoexisting ARSMS and the SN data produced by each of the newARSMS
12、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 traveled surfaces are moni-tored by skid measurement
13、systems, and the operating proce-dure for the use of these systems is Test Method E 274.However, dynamic measurement differences between thesesystems, that comply with the requirements of Test MethodE 274, require that each of these systems be correlated to eachother system. The most effective appro
14、ach to accomplish thiscorrelation is to compare each system to a singular, highlyaccurate system, or to a very limited number (two or three) of1This guide is under the jurisdiction of ASTM Committee E17 on Vehicle-Pavement Systems and is the direct responsibility of Subcommittee E17.21 on FieldMetho
15、ds for Measuring Tire Pavement Friction.Current edition approved Aug. 1, 2006. Published August 2006. Originallyapproved in 1997. Last previous edition approved in 2001 as E 1890 - 01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm
16、.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.systems, in a controlled environment. The ARSMSs weredesigned
17、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. Apparatus6.1 Voltmeter(s), capable of accurate measurement of linevoltage
18、 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) and 2000 lb (8900 N) ranges arerequired in accordance with Practice F
19、377.6.4 Distance/Velocity Measurement System, required in ac-cordance with Test Method F 457.6.5 Tachometer, to determine and monitor the speed of thewater pump during calibration of the water system.6.6 Water Volume Measurement System, to calibrate thewater pumping ability of the water system. Cons
20、ists 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, a collector, set atthe roadway level, that is divided into 22 sect
21、ions 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, to determine the cycle time of thewater delivery, brake apply, wheel
22、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 brake apply circuitry in a repeatable manner.7. Phase One7.1 All ARSMS
23、s shall meet all requirements of the currentversion of Test Method E 274.7.2 Calibration of the Force Plate and Air Bearing Plat-form:7.2.1 Calibrate both axes of the calibration platform undersimultaneous load conditions in accordance with Section 6 ofTest Method F 377, with the following modificat
24、ions:7.2.1.1 Calibrate traction through a range from 0 to 800 lb(3560 N). (See 6.3.4 of Test Method F 377.)7.2.1.2 Crosstalk shall be less than 0.5 % of the appliedload. (See 6.3.4 of Test Method F 377.)7.2.1.3 Use the reference load cell to calibrate the verticalload axis of the platform with zero
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