1、Designation:E108290(Reapproved 2012)Standard Test Method forMeasurement of Vehicular Response to Traveled SurfaceRoughness1This standard is issued under the fixed designation E1082;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the
2、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 test method covers the determination of vehicularresponse to traveled surface roughness.1.2 This test method u
3、tilizes an apparatus that measures therelative motion of a sprung mass system in response to traveledsurface roughness where the mass is supported by automotivetype suspension and tires.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is there
4、sponsibility 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.Specific precau-tionary statements are given in Section 6.2.Referenced Documents2.1 ASTM Standards:2E177 Practice for Use of the Ter
5、ms Precision and Bias inASTM Test MethodsE178 Practice for Dealing With Outlying ObservationsE867 Terminology Relating to Vehicle-Pavement SystemsE1136 Specification for P195/75R14 Radial Standard Refer-ence Test Tire3.Summary of Test Method3.1 Vehicular response to traveled surface roughness iscalc
6、ulated from an accumulated displacement measurementdivided by the test section length.A vehicle is brought to thedesired test speed and lateral position in the lane to be tested.The test apparatus is placed in operation and a constant speedis maintained throughout the test.Pertinent information affe
7、ct-ing test results must be noted.4.Significance and Use4.1 This test method provides a means of evaluating trav-eled surface roughness.The measured values represent vehicu-lar response to traveled surface roughness obtained with theequipment and procedures stated herein and do not necessarilyagree
8、or correlate directly with those obtained by othermethods.35.Apparatus5.1 Test Apparatus,consisting of an axle to frame thedisplacement measuring sensor,a displacement accumulator,adistance measuring system and a recording system mounted ina vehicle that is either a suitable passenger automobile wit
9、hfour wheels or a suitable single axle,twowheel trailer towed bya vehicle.5.2 Test AutomobileThe vehicle used to house the dis-placement measurement sensor.It shall be equipped as follows:5.2.1 Engine in front,5.2.2 Rigid rear axle,5.2.3 Rear springs(coil,single leaf,gas),5.2.4 Rear sway bar,5.2.5 H
10、eavy duty shock absorbers,5.2.6 Tires dynamically balanced(GM-TPC4or Specifica-tion E1136),5.2.7 Cruise control5,and5.2.8 Air conditioning.55.3 Test TrailerA two-wheel trailer shall be specificallydesigned and equipped to house the displacement measurementsensor,meeting the following requirements:5.
11、3.1 120 6 1 in.(3048 6 25 mm)from the center of thehitch to the center of the axle,5.3.2 65 6 5 in.(1651 6 127 mm)from the center of thetire to the center of the tire,5.3.3 Coil spring-shock-absorber suspension system,1This test method is under the jurisdiction of ASTM Committee E17 on Vehicle-Pavem
12、ent Systems and is the direct responsibility of Subcommittee E17.31 onMethods for Measuring Profile and Roughness.Current edition approved Dec.1,2012.Published December 2012.Originallyapproved in 1985.Last previous edition approved in 2007 as E1082 90(2007).DOI:10.1520/E1082-90R12.2For referenced AS
13、TM 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 ASTM website.3Gillespie,T.D.,Sayers,M.W.,and Segel,L.,“Calibration of Response-TypeRoad Roughness
14、 Measuring System,”National Cooperative Highway ResearchProgram Report 228,December 1980.4General Motors,“Tire Performance Criteria,Procedures and Specifications,”Engineering Publication A-4082,General Motors Corp.,Milford,MI,1982.5These items are optional but are listed since they can substantially
15、 affect theease with which the test is run.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.3.4 Sway bar,5.3.5 Tires dynamically balanced(GM-TPC4),5.3.6 Weight and suspension system balanced to provide aresponse to the range of traveled
16、surface roughness to bemeasured,and5.3.7 Rigid axle.5.4 Instrumentation:5.4.1 General RequirementsThe instrumentation shallfunction accurately at ambient temperatures between 40F and100F(4.4C and 37.8C).All electronic and mechanicalcomponents of the system will be adequately designed towithstand adverse conditions such as dust,moisture,vibrations,and shocks that may be encountered in traversingthe traveled surfaces to be measured.5.4.2 Displacement Measuring SensorCapable of measur-ing relative
