1、Designation:D650000(Reapproved 2012)1Standard Test Method forDiameter of Wool and Other Animal Fibers Using an OpticalFiber Diameter Analyser1This standard is issued under the fixed designation D6500;the number immediately following the designation indicates the year oforiginal adoption or,in the ca
2、se 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.1NOTEThe terminology section was updated in July 2012.INTRODUCTIONInstruments based on image analysis have
3、been designed to reduce the level of operator skillrequired and to speed up the measurement process while concurrently maintaining acceptable levelsof precision and accuracy.An additional advantage of image analysis instruments is the ability of theoperator to see the measurement points and to audit
4、 the process,if required,though this is not carriedout during routine measurement.As with projection microscope measurements,and the Sirolan-Laserscan,the Optical Fiber Diameter Analyser(OFDA)system covered by this test method providesa count of readings grouped into diameter classes.Because the fib
5、er snippets are measuredautomatically by an optical and image processing system,controls are provided in the imageprocessing software to minimize the inclusion of multiple measurements on the same fiber and falsediameter readings that arise from non-fiber material.1.Scope1.1 This test method covers
6、a procedure that uses an OpticalFiber Diameter Analyser(OFDA)for the determination of theaverage fiber diameter and the fiber diameter variation in wooland other animal fibers in their various forms.NOTE1This test method may also be applied to other fibers having around cross section such as some po
7、lyamides,polyesters,and glass;it mayalso be applied to a limited number of polyacrylics and regeneratedcellulose-type fibers.NOTE2In subsequent sections of this test method,the term“wool”also signifies other animal fibers where applicable.NOTE3For fineness specifications of wool,wool top,mohair,moha
8、irtop,alpaca,and cashmere,refer to Specifications D3991,D3992,D2252,and Test Method D2816,respectively.1.2 The OFDA reports average fiber diameter and standarddeviation of fiber diameter in micrometer units(m).Thecoefficient of variation of fiber diameter is reported as apercentage.1.3 This standard
9、 does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility 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.2.Referenced Documents2.1 ASTM Stan
10、dards:2D123 Terminology Relating to TextilesD584 Test Method for Wool Content of Raw WoolLaboratory ScaleD1060 Practice for Core Sampling of Raw Wool in Packagesfor Determination of Percentage of Clean Wool FiberPresentD1776 Practice for Conditioning and Testing TextilesD2130 Test Method for Diamete
11、r of Wool and OtherAnimalFibers by MicroprojectionD2252 Specification for Fineness of Types of AlpacaD2816 Test Method for Cashmere Coarse-Hair Content inCashmereD3991 Specifications for Fineness of Wool or Mohair andAssignment of GradeD3992 Specifications for Fineness of Wool Top or MohairTop and A
12、ssignment of GradeD4845 Terminology Relating to Wool2.2 Federal Standards:Official Standards of the United States for Grades ofWool,Section 31.031This test method is under the jurisdiction ofASTM Committee D13 on Textiles,and is the direct responsibility of Subcommittee D13.13 on Wool and Felt.Curre
13、nt edition approved July 1,2012.Published August 2012.Originallyapproved in 2000.Last previous edition approved in 2006 as D650000.DOI:10.1520/D6500-00R12E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMS
14、tandards volume information,refer to the standards Document Summary page onthe ASTM website.3Federal Register,Vol 30,No.161,August 20,1965,pp.10829-10833.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Measurement Method for Determining G
15、rade of Wool,Sec-tion 31.2043Official Standards of the United States for Grades of WoolTop,Section 31.14Measurement Method for Determining Grade of WoolTop,Section 31.3014USDAGrade Standards for Grease Mohair and Mohair Top52.3 IWTO Standards:6IWTO-8-66 Method of Determining Wool Fiber Diameterby th
16、e Projection MicroscopeIWTO-12-93 Measurement of the Mean and Distribution ofFibre Diameter Using a Sirolan-Laserscan Fibre DiameterAnalyserIWTO-19-98 Determination of Wool Base and VegetableMatter Base of Core Samples of Raw WoolIWTO-47-98 Measurement of the Mean and Distribution ofFibre Diameter of Wool Using an Optical Fibre DiameterAnalyser(OFDA)3.Terminology3.1 For all terminology related to D13.13,refer to Termi-nology D4845.3.1.1 The following terms are relevant to this standard:average f
