1、Designation:D350020Standard Test Methods forWood Structural Panels in Tension1This standard is issued under the fixed designation D3500;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses
2、 indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 These test methods cover the determination of thetensile properties of wood
3、 structural panels.1.2 Wood structural panels in use include plywood,orientedstrand board and composites of veneer,and other wood-basedlayers.1.3 Test Method A,Tensile Test for Small Specimens:1.3.1 This test method employs small specimens that shouldhave a reduced cross section at the center of the
4、ir length toavoid failure in the grip area.The transition from full width ofspecimen to reduced section at the center should be gradual tominimize stress concentration.1.3.2 When the measurements of elastic properties are to bemade,the length of the reduced cross section at the centershould be of su
5、fficient length to accommodate an extensometer.1.4 Test Method B,Tensile Test for Large Specimens:1.4.1 This test method employs large specimens and re-sponds well to manufacturing variables,panel gradecharacteristics,and other variables influencing the tensileproperties of structural panels.1.4.2 T
6、he test specimens are large enough to contain themaximum sized grade characteristics found in panels.The testspecimens have a constant cross section since the size andlocation of grade characteristics control the location of failuresand the effect of stress concentration at the grips is overshad-owe
7、d.1.4.3 This test method is recommended for the following:1.4.3.1 Comparative tests of wood structural panels,1.4.3.2 Determining the influence of any specific strengthreducing variables on the tensile properties of wood structuralpanels,1.4.3.3 Determination of tensile properties of panels for usei
8、n developing structural recommendations.1.5 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.6 This standard does not purport to address
9、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.1.7 This international standard was developed in a
10、ccor-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 ASTM
11、 Standards:2D2395 Test Methods for Density and Specific Gravity(Rela-tive Density)of Wood and Wood-Based MaterialsD4442 Test Methods for Direct Moisture Content Measure-ment of Wood and Wood-Based Materials3.Significance and Use3.1 These test methods determine the tensile properties ofwood structura
12、l panels in response to stresses acting in theplane of the panel.3.2 Test Method AThis test method is suited to materialthat is uniform with respect to tensile properties.It is normallyapplied to wood structural panels and plywood of clear,straight-grained veneers.It may also be used to evaluate the
13、strength of scarf and finger joints and other manufacturingprocess variables that can be expected to influence the tensileproperties of wood structural panels in a uniform manneracross the width of the sheet.3.3 Test Method BThis test method employs large testspecimens and responds well to all manuf
14、acturing variablesand growth characteristics that affect the tensile properties ofwood structural panels.1These test methods are under the jurisdiction of ASTM Committee D07 onWood and are the direct responsibility of Subcommittee D07.03 on Panel Products.Current edition approved June 15,2020.Publis
15、hed July 2020.Originallyapproved in 1976.Last previous edition approved in 2014 as D3500 14.DOI:10.1520/D3500-20.2For 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 stan
16、dards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO 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.3.4 It is recommended that wher
