ISO 6267:1980

Alpine skis - Measurement of bending vibrations

Skis alpins — Mesurage des vibrations en flexion

La présente Norme internationale spécifie une méthode de détermination de la fréquence propre et du temps d'amortissement en flexion d'un ski alpin encastré dans la zone de montage de la fixation, et dont la partie avant est en vibration libre. Elle est applicable aux skis alpins d'une longueur nominale de 150 cm ou plus.

Alpske smuči - Meritve upogibnih nihanj

General Information

• Status: Published
• Publication Date: 30-Apr-1980
• ICS: 97.220.20 - Winter sports equipment
• Technical Committee: ISO/TC 83/SC 4 - Snowsports equipment
• Drafting Committee: ISO/TC 83/SC 4/WG 3 - Skis and snowboards
• Current Stage: 9093 - International Standard confirmed
• Start Date: 06-Mar-2023
• Completion Date: 13-Dec-2025
• Ref Project: SIST ISO 6267:1995 - Alpine skis -- Measurement of bending vibrations

Overview

ISO 6267:1980 specifies a laboratory test method to determine the bending vibration natural frequency and damping time of alpine skis. The method applies to skis of nominal length 150 cm or more. The ski is rigidly clamped in the binding area so that the free front section vibrates; vibrations are recorded with an inductive displacement transducer and analyzed to extract period, frequency and damping metrics.

Key Topics

• Mounting and conditioning: The ski is conditioned at 23 ± 5 °C and encastrated (clamped) in a fixture located at the mounting zone. The clamping device must have a mass of at least 100 kg to avoid resonance effects and should use a flat jaw plus three clamps (30 mm wide) spaced at least 150 mm apart.
• Excitation and trigger: An excitation (mechanical deflection or mass) imposes an initial flexion. The triggering device must not introduce torsional vibration or shock and should be placed no more than 200 mm from the ski tip.
• Initial deflection and measurement: The prescribed initial flexion at the measurement point is 2.5 ± 0.5 mm; the initial amplitude used for evaluation should correspond as closely as possible to a 2 mm flexion at the measurement point. The subsequent 30 vibrations are used for evaluation.
• Transducer and recording: Vibrations are measured with an inductive displacement transducer attached to the fixture and recorded on a recorder for graphical analysis.
• Computed quantities:
  • Period of vibration (T): time between successive peaks.
  • Natural frequency (f): f = 1 / T.
  • Alternative calculation: T = t30 / 30, where t30 is the time for 30 complete vibrations.
  • Damping time (t1/2): time required for the vibration amplitude to reduce to half its initial value while the ski is vibrating.

Applications

This standard provides a reproducible mechanical test for manufacturers, test laboratories and researchers concerned with ski dynamic behavior. Typical uses:

• Product development: Compare bending vibration properties across prototypes to refine flexural design.
• Quality control: Verify that production skis meet specified dynamic response ranges.
• Performance and safety assessment: Assess vibration characteristics that can influence ride stability and skier feedback.

The method yields objective metrics (frequency, period, damping time) that support repeatable comparisons between ski models and batches.

Related Standards

• ISO 6267:1980 was developed by ISO/TC 83 (sports and outdoor equipment).
• Complementary documents typically cover binding mounting procedures, environmental conditioning of sports equipment, and mechanical test methods for skis and related gear. Users should consider other ISO or national standards on ski bindings and mechanical testing when designing a complete test program.

Keywords: ISO 6267:1980, alpine skis, bending vibration, natural frequency, damping time, inductive transducer, clamped mounting, test method.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-1995
$OSVNHVPXþL0HULWYHXSRJLEQLKQLKDQM
Alpine skis -- Measurement of bending vibrations
Skis alpins -- Mesurage des vibrations en flexion
Ta slovenski standard je istoveten z: ISO 6267:1980
ICS:
97.220.20 Oprema za zimske športe Winter sports equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDI,ZATION.MEIKKCZYHAPOfiHAR OPrAHM3AlJlR fl0 CTAH~APTbI3ALJMWORGANlSATlON INTERNATIONALE DE NORMALISATION
Measurement of bending vibrations
Alpine skis -
Skis alpins - Mesurage des vibrations en flexion
First edition - 1980-05-15
UDC 685.363.2 : 620.174.2 : 534.11 Ref. No. ISO 6267-1980 (E)
w
-
Descriptors : spart equipment, alpine Skis, tests, mechanical tests, bend tests, vibrations, measurement, test results.
v,
Price based on 2 pages
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of
national Standards institutes (ISO member bodies). The work of developing lnter-
national Standards is carried out through ISO technical committees. Every member
body interested in a subject for which a technical committee has been set up has the
right to be represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work.
Qraft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the ISO Council.
International Standard ISO 6267 was developed by Technical Committee ISO/TC 83,
Sports and recreational equipment, and was circulated to the member bodies in
March 1979.
lt has been approved by the member bodies of the following countries :
Austria Italy Switzerland
Czechoslovakia New Zealand USA
France Poland USSR
Germany, F. R. Romania
India South Africa, Rep. of
No member body expressed disapproval of the document.
0 International Organkation for Standardkation, 1980
Printed in Switzerland
ISO 62674980 (EI
INTERNATIONAL STANDARD
Measurement of bending vibrations
Alpine skis -
The time, in seconds, required for reduc-
2.3 half life, 4~:
1 Scope and field of application
tion of the initial amplitude of Vibration to half its value while
the ski vibrates.
This International Standard specifies a method for the deter-
mination of the natura1 frequency and the half life of the
bending vibrations of an alpine ski which is clamped in the
2.4 initial deflection : The deflection imposed on the ski at
binding mounting area and tan vibrate in the ski forebody.
+ Zr5 mm), corresponding to amplitude
the Start of test (i.e. 2,5
ao on the Vibration Chart (see figure 2).
lt is applicable to skis having nominal lengt
...

International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDI,ZATION.MEIKKCZYHAPOfiHAR OPrAHM3AlJlR fl0 CTAH~APTbI3ALJMWORGANlSATlON INTERNATIONALE DE NORMALISATION
Measurement of bending vibrations
Alpine skis -
Skis alpins - Mesurage des vibrations en flexion
First edition - 1980-05-15
UDC 685.363.2 : 620.174.2 : 534.11 Ref. No. ISO 6267-1980 (E)
w
-
Descriptors : spart equipment, alpine Skis, tests, mechanical tests, bend tests, vibrations, measurement, test results.
v,
Price based on 2 pages
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of
national Standards institutes (ISO member bodies). The work of developing lnter-
national Standards is carried out through ISO technical committees. Every member
body interested in a subject for which a technical committee has been set up has the
right to be represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work.
Qraft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the ISO Council.
International Standard ISO 6267 was developed by Technical Committee ISO/TC 83,
Sports and recreational equipment, and was circulated to the member bodies in
March 1979.
lt has been approved by the member bodies of the following countries :
Austria Italy Switzerland
Czechoslovakia New Zealand USA
France Poland USSR
Germany, F. R. Romania
India South Africa, Rep. of
No member body expressed disapproval of the document.
0 International Organkation for Standardkation, 1980
Printed in Switzerland
ISO 62674980 (EI
INTERNATIONAL STANDARD
Measurement of bending vibrations
Alpine skis -
The time, in seconds, required for reduc-
2.3 half life, 4~:
1 Scope and field of application
tion of the initial amplitude of Vibration to half its value while
the ski vibrates.
This International Standard specifies a method for the deter-
mination of the natura1 frequency and the half life of the
bending vibrations of an alpine ski which is clamped in the
2.4 initial deflection : The deflection imposed on the ski at
binding mounting area and tan vibrate in the ski forebody.
+ Zr5 mm), corresponding to amplitude
the Start of test (i.e. 2,5
ao on the Vibration Chart (see figure 2).
lt is applicable to skis having nominal lengths of 150 cm or
more.
: The first amplitude which most
2.5 initial amplitude, al
closely corresponds to a 2 mm deflection of the ski at the
measurement Point. (The thirty succeeding vibrations are used
2 Definitions
for the evaluation).
For the purpose of this International Standard, the following
...

Norme internationale
INTERNATIONAL ORGANIZATION FOR STANDARDIZATlONWlE~YHAPO~HAFI OPTAHMJA~MR l-l0 CTAH~APTbl3Al#lM.ORGANISATION INTERNATIONALE DE NORMALISATION
Skis alpins - Mesurage des vibrations en flexion
Alpine skis - Measuremen t of bending vibrations
Première édition - 1980-05-15
CDU 685363.2 : 620.174.2 : 534.11 Réf. no : ISO 6267-1980 (FI
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8 Descripteurs : matériel de sport, ski alpin, essai, essai mécanique, essai de flexion, vibration, mesurage, matériel d’essai.
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Prix basé sur 2 pages
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (comités membres de I’ISO). L’élaboration
des Normes internationales est confiée aux comités techniques de I’ISO. Chaque
comité membre intéresse par une etude a le droit de faire partie du comité technique
correspondant. Les organisations internationales, gouvernementales et non gouverne-
mentales, en liaison avec I’ISO, participent également aux travaux.
Les projets de Normes internationales adoptés par les comités techniques sont soumis
aux comités membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO.
La Norme internationale ISO 6267 a été élaborée par le comité technique ISO/TC 83,
Mat&=iel de sport et d’activités de plein air, et a été soumise aux comités membres en
mars 1979.
Les comités membres des pays suivants l’ont approuvée :
Afrique du Sud, Rép. d’ Italie
Tchécoslovaquie
Allemagne, R. F. Nouvelle-Zélande URSS
Autriche Pologne USA
France Roumanie
Inde Suisse
Aucun comité membre ne l’a désapprouvée.
0 Organisation internationale de normalisation, 1980 0
Imprimé en Suisse
NORME INTERNATIONALE ISO 62674980 (FI
Skis alpins - Mesurage des vibrations en flexion
1 Objet et domaine d’application 2.3 temps d’amortissement, t1/2 : Temps, en secondes,
nécessaire pour réduire l’amplitude initiale de la vibration à la
La présente Norme internationale spécifie une méthode de moitié de sa valeur, le ski étant en vibration.
détermination de la fréquence propre et du temps d’amortisse-
ment en flexion d’un ski alpin encastré dans la zone de montage
Première flexion imposée au ski au
2.4 flexion initiale :
de la fixation, et dont la partie avant est en vibration libre,
début de l’essai (c’est-à-dire 2,5 + Ot5 mm), correspondant à
l’amplitude IZO sur le diagramme de VI % rations (voir figure 2).
Elle est applicable aux skis alpins d’une longueur nominale de
150 cm ou plus.
Premiere amplitude correspon-
2.5 amplitude initiale, CI~ :
dant, au plus près, à une flexion du ski de 2 mm au point de
mesurage. (Les trente vibrations suivantes sont utilisées pour
l’évaluation. 1
2 Définitions
Dans le cadre de la présente Norme internationale, les défini-
3 Appareil d’essai
tions suivantes sont applicables :
L’appareil d’essai doit comprendre un dispositif d’encastre-
2.1 période de
...