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ASTM F780-93a(2018)

(Test Method)

Standard Test Method for Linear Deformation and Breaking Strength of Alpine Skis

Standard Test Method for Linear Deformation and Breaking Strength of Alpine Skis

SIGNIFICANCE AND USE
4.1 This test method provides information concerning the resistance of a ski to permanent bending and an indication of its basic strength. It is not intended to evaluate the data with regard to the quality of the ski.
SCOPE
1.1 This test method covers the determination of linear deformation load and breaking load for Alpine skis.2  
1.2 This test method is applicable to all Alpine skis.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
30-Jun-2018
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 F780-93a(2012) - Standard Test Method for Linear Deformation and Breaking Strength of Alpine Skis
Effective Date
01-Jul-2018
Refers
ASTM F472-11 - Standard Terminology for Geometry of Alpine Skis
Effective Date
15-Jul-2011
Refers
ASTM F472-92(2006) - Standard Terminology for Geometry of Alpine Skis
Effective Date
01-Oct-2006
Refers
ASTM F472-92(1998) - Standard Terminology for Geometry of Alpine Skis
Effective Date
10-Aug-1998

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ASTM F780-93a(2018) - Standard Test Method for Linear Deformation and Breaking Strength of Alpine SkisASTM F780-93a(2018) - Standard Test Method for Linear Deformation and Breaking Strength of Alpine Skis
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ASTM F780-93a(2018) - Standard Test Method for Linear Deformation and Breaking Strength of Alpine Skis
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F780 −93a (Reapproved 2018)
Standard Test Method for
Linear Deformation and Breaking Strength of Alpine Skis
ThisstandardisissuedunderthefixeddesignationF780;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This test method covers the determination of linear 4.1 This test method provides information concerning the
deformation load and breaking load for Alpine skis.
resistanceofaskitopermanentbendingandanindicationofits
basic strength. It is not intended to evaluate the data with
1.2 This test method is applicable to all Alpine skis.
regard to the quality of the ski.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Apparatus
responsibility of the user of this standard to establish appro-
5.1 This test method shall be conducted on a device (see
priate safety, health, and environmental practices and deter-
Fig. 1) equipped with adjustable supports, a load (F) applica-
mine the applicability of regulatory limitations prior to use.
tion system (1) with a range of at least 20 000 N and reading
1.4 This international standard was developed in accor-
accuracy of 650 N, and with an instrument (2) for reading
dance with internationally recognized principles on standard-
bending deformation (d) with an accuracy of 0.01 mm. The
ization established in the Decision on Principles for the
system must have a controlled deflection rate. A standard
Development of International Standards, Guides and Recom-
universal tension/compression testing machine with X−Y
mendations issued by the World Trade Organization Technical
recorder (3) is typical of such a system.
Barriers to Trade (TBT) Committee.
5.2 The test method is made with the ski in its normal
2. Referenced Documents
horizontalposition,andtheoverhangingportionsoftheskiare
2.1 ASTM Standards:
left free to deflect.
D2240TestMethodforRubberProperty—DurometerHard-
5.3 The test system shall be set up in accordance with Fig.
ness
1 (Section A) with a 250-mm distance between supports and
F472Terminology for Geometry of Alpine Skis
onesupportmadewitha25-mmdiameter,low-frictionrollerat
point of contact with the ski. The end support shall be so
3. Terminology
designed as to have a hinged clamp which prohibits linear
3.1 Definitions of Terms Specific to This Standard:
displacement, yet permits rotation about the support. The load
3.1.1 breaking load (F )—the maximum load applied in
B is applied through a plate as shown in Fig. 1 (Section B), 25
accordance with Sections 6 and 7 (that is, the maximum load
mm wide and of length equal to or slightly greater than the
which the ski can sustain).
width of the ski, made up of a steel plate (5) and a hard rubber
(95 65ShoreAdurometer;seeTestMethodD2240)layer(4).
3.1.2 deformation load (F )—the load applied in accor-
D
The plate must be free to rotate under loading ram.
dancewithSection6thatcausesapermanentdeformationof1
mm at the load application point of the ski.
6. Determination of Load Application Point
6.1 In order to obtain comparable values, the test shall be
This test method is under the jurisdiction of ASTM Committee F27 on Snow
conducted at the load application point with a separation
and Water Sports and is the direct responsibility of F27.30 on Skiing and
between the supports of 250 6 0.5 mm. Determine the load
Snowboarding Equipment.
application point by moving the ski in a longitudinal direction
Current edition approved July 1, 2018. Published August 2018. Originally
approved in 1982. Last previous edition approved in 2012 as F780–93a (2012).
on the supports until a deflection is obtained under a load of
DOI: 10.1520/F0780-93A
...

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