ASTM F2031-00

Standard Test Method for Measurement of Arrow Shaft Static Spine (Stiffness)

SCOPE
1.1 This test method covers the formulation and designation of arrow spine measurement standards and nomenclature for arrow shafts.
1.2 The English system of measurement, specifically inches of deflection, shall be used for all spine values expressed for a given arrow shaft.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Jun-2000
• ICS: 97.220.40 - Outdoor and water sports equipment
• Technical Committee: F08 - Sports Equipment, Playing Surfaces, and Facilities
• Drafting Committee: F08.16 - Archery Products

Relations

• Replaced By: ASTM F2031-05 - Standard Test Method for Measurement of Arrow Shaft Static Spine (Stiffness)
• Effective Date: 01-Oct-2005

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation:F2031–00
Standard Test Method for
Measurement of Arrow Shaft Static Spine (Stiffness)
This standard is issued under the fixed designation F 2031; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope shaft. For this test method, a span type measurement is to be
used. The length of the arrow shaft to be tested, the span
1.1 This test method covers the formulation and designation
distance to be used, and the equipment to be used are defined
of arrow spine measurement standards and nomenclature for
as follows:
arrow shafts.
4.1.1 Shaft Length— The shaft length to be used for
1.2 The English system of measurement, specifically inches
standard spine measurement is the span distance plus 1 in. to
of deflection, shall be used for all spine values expressed for a
allow for axial travel during deflection.
given arrow shaft.
4.1.2 Span Distance— The length of the span to be used for
1.3 This standard does not purport to address all of the
this test is 28 in. (71.1 cm). For those shafts that are
safety concerns, if any, associated with its use. It is the
manufactured less than 29 in. (73.7 cm) in length, the span
responsibility of the user of this standard to establish appro-
distance to be used is 23 in. (58.4 cm).
priate safety and health practices and determine the applica-
4.1.2.1 Span = 28 in. (71.1 cm) for shafts longer than 29 in.
bility of regulatory limitations prior to use.
(73.7 cm).
2. Terminology 4.1.2.2 Span = 23 in. (58.4 cm) for shafts shorter than 29 in.
(73.7 cm).
2.1 Definitions of Terms Specific to This Standard:
4.1.3 Measurement Location—Arrow shafts shall be mea-
2.1.1 arrow spine—the deflection of the shaft, measured in
sured for spine at the center of the span. In instances where this
inches, in a three-point load scenario where a specified mass is
is not practical due to shaft design, the manufacturer shall
applied to the midpoint of the arrow shaft supported at a fixed
disclose the measurement location(s) from an identifiable
span.
datum on the shaft.
2.1.2 spine around shaft variation—spine variation between
4.1.4 Measurement Equipment—Measurement equipment
four readings taken at 90° spacing around the shaft.
may involve the use of dial indicators, probe indicators, and
2.1.3 static spine—stiffness of the arrow shaft at rest on a
laser gauging devices.
spine measurement device.
4.1.4.1 Mechanical Indicators—In the case of mechanical
3. Significance and Use
indicators, probe pressure should be limited to no more than
0.176 oz (5 g).
3.1 This test method is intended to provide a stable industry
4.1.4.2 Noncontact Gauging Equipment—Noncontactgaug-
standard by which benchmarks and comparisons can be made
ing equipment, such as laser gauging equipment, shall read to
by manufacturers and consumers.
within0.001in.ofmechanicalcontactmeasurementequipment
3.2 This test method is intended to clarify and define arrow
conforming to the test methods and specifications outlined
spineorstiffnessasitpertainstothearcheryindustryandsport.
herein.
4. Measurement Guidelines for Arrow Spine
4.1.5 Span Support Points—Support points shall allow free
axial travel of the shaft as the shaft is deflected during
4.1 Arrow Spine Measurement—The most prevalent and
measurement.
commonly accepted method of measuring arrow shaft spine
4.1.5.1 Span Support Point Configuration—The shaft sup-
involves supporting the arrow shaft along a known, fixed span,
port point shall have a maximum diameter of 0.125 in. (3.175
and using an indicator device
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