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ASTM F1722-96(2003)

(Test Method)

Standard Test Method for Determining Mass and Moment of Inertia of Alpine Skis

Standard Test Method for Determining Mass and Moment of Inertia of Alpine Skis

SIGNIFICANCE AND USE
This test method provides a means for determining the mass and moment of inertia of adult Alpine skis. It is not intended to evaluate data with regard to the quality of the ski.
SCOPE
1.1 This test method covers test measurement methods for mass and moment of inertia of adult Alpine skis.  
1.2 No limitation to ski size is proposed. This test method is applicable to all adult Alpine skis.  
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.4 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-Feb-2003
ICS
97.220.20 - Winter sports equipment
Technical Committee
F27 - Snow and Water Sports
Drafting Committee
F27.30 - Skiing and Snowboarding Equipment
Current Stage
Ref Project

Relations

Replaces
ASTM F1722-96 - Standard Test Method for Determining Mass and Moment of Inertia of Alpine Skis
Effective Date
10-Feb-2003
Replaced By
ASTM F1722-09 - Standard Test Method for Determining Mass and Moment of Inertia of Alpine Skis
Effective Date
01-Jun-2009

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ASTM F1722-96(2003) - Standard Test Method for Determining Mass and Moment of Inertia of Alpine SkisASTM F1722-96(2003) - Standard Test Method for Determining Mass and Moment of Inertia of Alpine Skis
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ASTM F1722-96(2003) - Standard Test Method for Determining Mass and Moment of Inertia of Alpine Skis
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation:F1722–96 (Reapproved 2003)
Standard Test Method for
,
Determining Mass and Moment of Inertia of Alpine Skis
This standard is issued under the fixed designation F 1722; 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 5. Apparatus
1.1 This test method covers test measurement methods for 5.1 Weighing Device, accurate to 60.02 kg.
mass and moment of inertia of adult Alpine skis. 5.2 Fulcrum, for locating the center of gravity of the ski.
1.2 No limitation to ski size is proposed. This test method is 5.3 Time Measurement Device (stopwatch), accurate to at
applicable to all adult Alpine skis. least 0.1 s.
1.3 The values stated in SI units are to be regarded as the 5.4 Measuring Device, in accordance with Fig. 1, consisting
standard. The values given in parentheses are for information of the following parts:
only. 5.4.1 Clamping Device, A, consisting of two clamping
1.4 This standard does not purport to address all of the fixtures. The top clamping fixture has a hole with a mark to
safety concerns, if any, associated with its use. It is the locate the center of gravity and two additional holes at a
responsibility of the user of this standard to establish appro- distance, d, from the center mark for fixation of the filaments,
f
priate safety and health practices and determine the applica- B. The recommended dimension for d is 25 mm, and the mass
f
bility of regulatory limitations prior to use. of the clamping device shall be less than 0.1 kg.
5.4.2 Top Plate, C, with two holes separated by the distance
2. Referenced Documents
2d for the fixation of filaments, B. The plate, C, shall be fixed
f
2.1 ISO Standards: on a stiff, horizontal beam.
ISO 554 Standard Atmospheres for Conditioning and/or
5.4.3 Two Filaments, B, with equal lengths, l, that connect
Testing—Specifications the top plate with the clamping device. The ratio d:l shall be
f
ISO 6003 Alpine Skis—Determination of Mass and Polar
approximately 1:40. With the recommended dimension d =25
f
Moment of Inertia—Laboratory Measurement Method mm, and the length, l = 1000 mm.The filaments shall be made
of materials with low elongation and high strength (for
3. Terminology
example, tennis racket string and fishing line). The diameter of
3.1 Definitions of Terms Specific to This Standard:
the filaments shall be not more than 1.0 mm.
3.1.1 mass of ski, m—the mass of a finished, manufactured
6. Sampling and Conditioning
ski without any mounted parts, expressed in kilograms.
3.1.2 moment of inertia, I—the mass moment of inertia of 6.1 In order to ensure comparability, it is recommended that
theskiaboutitscenterofgravity,expressedinkilogram-metres
one of the following ski sizes be used if the data measured are
squared. to be published: 150, 180, or 200 cm. From these three sizes,
choose the one that is most representative of the tested model.
4. Significance and Use
6.2 All measurements shall be taken from a finished, manu-
4.1 This test method provides a means for determining the
factured ski without any mounted parts.
mass and moment of inertia of adult Alpine skis. It is not
6.3 Allmeasurementsshallbetakenfromaskithathasbeen
intended to evaluate data with regard to the quality of the ski.
conditioned in a standard atmosphere 20/65 (ISO 554) (that is,
the ski shall be placed in this atmosphere for at least 24 h prior
to measurements being taken).
This test method is under the jurisdiction of ASTM Committee F27 on Snow
Skiing and is the direct responsibility of Subcommittee F27.30 on Skis and Boots.
7. Calibration of Measuring Device
Current edition approved Feb. 10, 2003. Published May 2003. Originally
approved in 1996. Last previous edition approved in 1996 as F 1722–96.
7.1 Differences in construction between the different mea-
This test method is meant to conform in all significant aspects to the test
suring devices can lead to different measurement results, which
method for determining mass and polar moment of inertia ofAlpine skis as set forth
deviate from the theoretical value of the polar moment of
in ISO 6003.
Available from American National Standards Institute, 11 W. 42nd St., 13th inertia. In order to reduce such deviations, it is recommended
Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F1722–96 (2003)
where:
I = theoretical polar moment of inertia, and
th
I = measured polar moment of inertia.
7.5 The test equipment validation factor, c, should fall
within a range from 0.9 to 1.1. If c lies outside this range, the
test equipment shall be check
...

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