1、Designation: F1889 05 (Reapproved 2010)An American National StandardStandard Guide forStraightness Measurement of Arrow Shafts1This standard is issued under the fixed designation F1889; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisio
2、n, 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.INTRODUCTIONArrow shaft straightness is a desired characteristic. Unfortunately, straightness is currentlymeasured
3、using varying methods at varying span lengths. The archery industry, as well as consumers,have recognized that it is difficult to compare measurements at these various spans using differentmeasurement methods.This guide proposes the use of a fixed span distance, for all but a few very short shafts,
4、instead ofusing various spans based on various manufactured shaft lengths. The span length of 28 in. wasselected based on typical manufactured shaft lengths, as well as other ATA/ASTM industry standards.Using this arrow shaft straightness guide will benefit consumers as well as the archery industry.
5、1. Scope1.1 This guide covers the formulation and designation ofstraightness measurement standards and nomenclature forarrow shafts.1.2 This guide is designed to provide manufacturers andconsumers a means for measuring the straightness of arrowshafts with tools and devices available in the archery i
6、ndustryand sport.1.3 The values stated in inch-pound units are to be regardedas the standard. The SI units given in parentheses are forinformation only.2. Terminology2.1 Definitions of Terms Specific to This Standard:2.1.1 arrow straightness, nthe conformance of the mate-rial or load axis of an arro
7、w shaft to the true linear, longitudinalaxis of the shaft.2.1.2 standard total indicator reading (TIR), ntotal indi-cator reading of arrow shaft straightness obtained throughmethods outlined in this guide.3. Significance and Use3.1 The measurement system presented in this guide isintended to ensure
8、uniform arrow shaft straightness measure-ment standards to avoid confusion of the consumer, whichresults from the use of different straightness measurementsystems.4. Measurement Guidelines for Arrow Shaft Straightness4.1 Straightness MeasurementThe most prevalent andcommonly accepted method of measu
9、ring arrow shaft straight-ness involves supporting the arrow shaft along a known, fixedspan, and using an indicator device while the arrow shaft isrotated about its axis on wheels or bearings. For this guide, aspan type measurement is to be used. The length of the arrowshaft to be tested, the span d
10、istance to be used, and theequipment to be used are defined as follows:4.1.1 Shaft LengthThe shaft length to be used for straight-ness measurement is the actual manufactured shaft length ofeach arrow shaft size/type.4.1.2 Span DistanceThe length of the span to be used forthis test is 28 in. (0.711 m
11、) with a length tolerance of 60.125in. (3.2 mm). For those shafts that are manufactured less than29 in. in length, the span distance to be used is 25 in. (63.5 cm)and adjusted to an equivalent 28 in. reading using the approxi-mate conversion formula:Approximate Conversion Formula:28-in. straightness
12、 value = 25-in. straightness value 3 28/25For example:straightness at 25 in. = 0.0030 in.straightness at 28 in. = 0.0030 in. 3 28/25where 28/25 = 1.12,straightness at 28 in. = 0.0030 in. 3 1.12 = 0.0034 in.4.1.3 Measurement LocationArrow shafts shall be mea-sured for straightness at the center of th
13、e span. The tolerancefor the measurement location shall be equal to or better than60.250 in. (6.35 mm).4.1.4 Measurement EquipmentMeasurements shall betaken with a noncontact laser type optical measurement device.1This guide is under the jurisdiction of ASTM Committee F08 on SportsEquipment and Faci
14、lities and is the direct responsibility of Subcommittee F08.16 onArchery Products.Current edition approved May 1, 2010. Published May 2010. Originallyapproved in 1998. Last previous edition approved in 2005 as F1889 05. DOI:10.1520/F1889-05R10.1Copyright ASTM International, 100 Barr Harbor Drive, PO
15、 Box C700, West Conshohocken, PA 19428-2959, United States.4.1.5 Support WheelsSupport wheels must feature low-friction bearings and exhibit a positive crown in order to limitthe contact area with the arrow shaft.4.1.6 Test DescriptionThe arrow shafts shall be rotatedabout its longitudinal axis whil
16、e being measured for straight-ness at the center of the span. This rotation cancels out theeffect of gravity-induced sag. The rotation speed shall notexceed the resolution ability of the measurement device toensure accurate measurements.4.1.7 Shaft RoundnessAccuracy of this measurementmethod depends
17、 upon consistent roundness of the arrow shaft.In situations where shafts are not round, this attribute can befactored out of the straightness measurement by the use ofadditional measurement devices at the span supports. If thisadjustment method is used, it shall be noted along with themeasurement va
18、lue.4.2 Measurement AccuracyThe measurement accuracy ofthe laser shall be equal to or better than 60.001 in. (0.025 mm)under ASTM standard temperature conditions.5. Product Marking and Specification Disclosure5.1 Straightness measurements commonly are presented intwo ways including a plus-minus (6)
19、reading, as well as totalindicator reading (TIR). The method of measurement shall beclearly defined with the measurement value.5.1.1 Plus-Minus (6)This measurement value in inchesrepresents the range of measurements from the average value.For Example:straightness = 60.001 in. (0.025 mm)5.1.2 Total I
20、ndicator Reading (TIR)This measurementvalue in inches represents the total range of measurementvalues.For Example:straightness = 0.002 in. TIR (0.050 mm)6. Keywords6.1 archery; arrow shafts; measurement; straightness; totalindicator readingASTM International takes no position respecting the validity
21、 of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject
22、to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters
23、. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is
24、 copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).F1889 05 (2010)2
