1、Designation:D729006(Reapproved 2022)Standard Practice forEvaluating Material Property Characteristic Values forPolymeric Composites for Civil Engineering StructuralApplications1This standard is issued under the fixed designation D7290;the number immediately following the designation indicates the ye
2、ar oforiginal 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 covers the procedures for computingcharacterist
3、ic values of material properties of polymeric com-posite materials intended for use in civil engineering structuralapplications.The characteristic value is a statistically-basedmaterial property representing the 80%lower confidencebound on the 5th-percentile value of a specified population.Character
4、istic values determined using this standard practicecan be used to calculate structural member resistance values indesign codes for composite civil engineering structures and forestablishing limits upon which qualification and acceptancecriteria can be based.1.2 This standard does not purport to add
5、ress all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.3 This international standard was developed
6、 in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1
7、 ASTM Standards:2D883 Terminology Relating to PlasticsD3878 Terminology for Composite MaterialsD5055 Specification for Establishing and Monitoring Struc-tural Capacities of Prefabricated Wood I-JoistsD5457 Specification for Computing Reference Resistance ofWood-Based Materials and Structural Connect
8、ions forLoad and Resistance Factor DesignD5574 Test Methods for EstablishingAllowable MechanicalProperties of Wood-Bonding Adhesives for Design ofStructural JointsE6 Terminology Relating to Methods of Mechanical TestingE178 Practice for Dealing With Outlying ObservationsE456 Terminology Relating to
9、Quality and Statistics2.2 Other Document:3MIL-Handbook-17 Polymer Matrix Composites,Volume 1,Revision F3.Terminology3.1 DefinitionsTerminology D3878 defines terms relatingto high-modulus fibers and their composites.TerminologyD883 defines terms relating to plastics.Terminology E6 definesterms relati
10、ng to mechanical testing.Terminology E456 definesterms relating to statistics.In the event of a conflict betweenterms,Terminology D3878 shall have precedence over theother documents.3.2 Definitions of Terms Specific to This Standard:3.2.1 characteristic valuea statistically-based materialproperty re
11、presenting the 80%lower confidence bound on the5th-percentile value of a specified population.The character-istic value accounts for statistical uncertainty due to a finitesample size.3.2.1.1 DiscussionThe 80%confidence bound and 5th-percentile levels were selected so that composite materialcharacte
12、ristic values will produce resistance factors for Loadand Resistance Factor Design similar to those for other civilengineering materials(see Refs 1 and 2).43.2.1.2 DiscussionThe term“characteristic value”isanalogous to the term“basis value”used in the aerospaceindustry where A-and B-basis values are
13、 defined as the 95%1This practice is under the jurisdiction of ASTM Committee D30 on CompositeMaterials and is the direct responsibility of Subcommittee D30.10 on Compositesfor Civil Structures.Current edition approved Feb.1,2022.Published February 2022.Originallyapproved in 2006.Last previous editi
14、on approved in 2017 as D729006(2017).DOI:10.1520/D7290-06R22.2For 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 ASTM website.3Avai
15、lable from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.4The boldface numbers in parentheses refer to the list of references at the end ofthis standard.Copyright ASTM International,100 Barr Harbor Drive,PO
16、Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1lower confidence bound on the lower 1%and 10%values ofa population,respectively.3.2.2 data confidence factor,a factor that is used
