Standard Test Method for Measuring Damage Resistance of Fiber-Reinforced Polymer-Matrix Composite to Concentrated Quasi-Static Indentation Force

FIG.4TypicalF/dResponsefortheRigidlyBacked

Con guration

12.1.5Identi cationofthematerialtested,including:mate-rialspeci cation,materialtype,materialdesignation,manufac-turer,manufacturer’slotorbatchnumber,source(ifnotfrommanufacturer),dateofcerti cation,expirationofcerti cation, lamentdiameter,toworyarn lamentcountandtwist,sizing,formorweave, berarealweight,matrixtype,prepregmatrixcontent,andprepregvolatilescontent.

12.1.6Descriptionofthefabricationstepsusedtopreparethelaminate,including:fabricationstartdate,fabricationenddate,processspeci cation,curecycle,consolidationmethod,andadescriptionoftheequipmentused.

12.1.7Plyorientationstackingsequenceofthelaminate.12.1.8Fibervolumefractionandvoidcontent,ifmeasured.Includethemethodusedtodetermine bervolumefractionandvoidcontent.

12.1.9Averageplythicknessofthematerial.

12.1.10Resultsofanynondestructiveevaluationtests.12.1.11Methodofpreparingthetestspecimen,includingspecimenlabelingschemeandsamplingmethod.

12.1.12Calibrationdatesandmethodsforallmeasurementandtestequipment.

12.1.13Typeoftestmachineanddataacquisitionsamplingrateandequipmenttype.

12.1.14Dimensionsofeachtestspecimen.Includeaveragenominalthicknessofeachspecimenandmaximumthicknessvariationalongtheedgesofthespecimen.

12.1.15Conditioningparametersandresultsandtheproce-dureusedifotherthanthatspeci edinthetestmethod.

12.1.16Relativehumidityandtemperatureofthetestinglaboratory.

12.1.17Speedoftesting.

12.1.18Displacementtransducerplacement,ifused,andtransducertype.

12.1.19Testresults:

12.1.19.1Contactforce/indenterdisplacement(F/d)curves.12.1.19.2F1,Fmax,andd,iftheseparametersweremea-sured.Fordentdepth(d)measurements,theresultsshouldbereportedasafunctionofcontactforce.

12.1.19.3Reportthenumberofspecimenstestedandtheindividualvalues,mean,standarddeviation,andcoefficientofvariation(standarddeviationdividedbythemean)ofallmeasurements.

12.1.19.4Anyobservationsondamagecharacteristicsthatweremadeforeachspecimen.13.PrecisionandBias

13.1Precision—Thedatarequiredforthedevelopmentofaprecisionstatementisnotavailableforthistestmethod.

13.2Bias—Biascannotbedeterminedforthistestmethodasnoacceptablereferencestandardexists.14.Keywords

14.1compositematerials;damageresistance;delamination;dent;impact;quasi-static

indentation