1、Designation:D8101/D8101M18Standard Test Method forMeasuring the Penetration Resistance of CompositeMaterials to Impact by a Blunt Projectile1This standard is issued under the fixed designation D8101/D8101M;the number immediately following the designation indicates theyear of original adoption or,in
2、the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method measures the resistance of flat com-posite panels in one specific clampin
3、g configuration to pen-etration by a blunt projectile in free flight.In this test method,the term“penetration”is defined as the case in which theprojectile travels completely through the composite panel andfully exits the back side.The composite materials may becontinuous fiber angle-ply,woven or br
4、aided fiber-reinforcedpolymer matrix composites,or chopped fiber-reinforced com-posites.The resistance to penetration is quantified by astatistical function that defines the probability of penetrationfor a given kinetic energy.1.2 This test method is intended for composite test panels inwhich the th
5、ickness dimension is small compared with the testpanel width and length(span to thickness on the order of 40 orgreater).1.3 This test method is intended for applications such as jetengine fan containment,open rotor engine blade containment,or other applications in which protection is needed for proj
6、ec-tiles at velocities typically lower than seen in ballistic armorapplications.The typical impact velocity that this test isintended for is in the range of 100 to 500 m/s 300 to 1500 ft/s,as opposed to higher velocities associated with armor penetra-tion.1.4 A flat composite panel is fixed between
7、a circular-shaped clamping fixture and a large base fixture each with alarge coaxial hole defining a region of the panel that issubjected to impact in the direction normal to the plane of theflat panel by a blunt projectile.Clamping pressure is providedby 28 through bolts that pass through the front
8、 clamp,the testspecimen,and the back plate.The mass,geometry,desiredimpact kinetic energy,and impact orientation of the projectilewith respect to the panel are specified before the test.Equip-ment and procedures are required for measuring the actualimpact velocity and orientation during the test.The
9、 impactpenetration resistance can be quantified by either the velocityor kinetic energy required for the projectile to penetrate the testpanel fully.Anumber of tests are required to obtain a statisticalprobability of penetration for given impact conditions.1.5 This test method measures the penetrati
10、on resistance fora specific projectile and test configuration and can be used toscreen materials for impact penetration resistance,compare theimpact penetration resistance of different composite materialsunder the same test geometry conditions,or assess the effectsof in-service or environmental expo
11、sure on the impact penetra-tion resistance of materials.1.6 The impact penetration resistance is highly dependenton the test panel materials and architecture,projectile geometryand mass,and panel boundary conditions.Results are notgenerally scalable to other configurations but,for the same testconfi
12、gurations,may be used to assess the relative impactpenetration resistance of different materials and fiber architec-tures.1.7 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachs
13、ystem shall be used independently of the other.Combiningvalues from the two systems may result in nonconformancewith the standard.Within the text,the inch-pound units areshown in brackets.1.8 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is the
14、responsibility 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.1.9 This international standard was developed in accor-dance with internationally recognized principles on standard-
15、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.1This test method is under the jurisdiction of ASTM Committee D30 onComposite Materials and is t
16、he direct responsibility of Subcommittee D30.05 onStructural Test Methods.Current edition approved Oct.15,2018.Published February 2019.Originallyapproved in 2017.Last previous edition approved in 2017 as D8101/D8101M 17.DOI:10.1520/D8101_D8101M-18.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 Decisio
