ASTM F2137-18
(Practice)Standard Practice for Measuring the Dynamic Characteristics of Amusement Rides and Devices
Standard Practice for Measuring the Dynamic Characteristics of Amusement Rides and Devices
SIGNIFICANCE AND USE
4.1 This practice is intended for use whenever the dynamic characteristics of an amusement ride or device are to be determined. The existence of this practice is not intended to imply that there is a requirement to perform specific testing on amusement rides or devices.
4.2 The general provisions of this practice provide instrumentation specifications, data acquisition and testing procedures, and documentation requirements that when applied will improve the repeatability, reliability, and utility of the test results.
4.3 Based on the general provisions of this practice, the SARC Test specifications, when followed, will yield standardized test results regarding the patron-related, dynamic motion of amusement rides or devices. The SARC Test will facilitate both the meaningful comparison of the dynamic motion of different amusement rides or devices and the tracking of changes, if any, in the dynamic characteristics of a given ride or device.
SCOPE
1.1 This practice covers acquisition of data related to the dynamic characteristics of amusement rides and devices.
1.2 This practice also defines the specific requirements of a Standardized Amusement Ride Characterization Test (SARC Test) for use in characterizing the dynamic motion of an amusement ride or device.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3.1 Exception—The values are reversed in Section 13 since EN standards primarily use SI units.
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.
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Designation: F2137 − 18
Standard Practice for
Measuring the Dynamic Characteristics of Amusement
1
Rides and Devices
This standard is issued under the fixed designation F2137; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This practice covers acquisition of data related to the
3.1 Definitions:
dynamic characteristics of amusement rides and devices.
3.1.1 aliasing—aphenomenonassociatedwithsampleddata
systems, wherein a signal containing significant energy at
1.2 This practice also defines the specific requirements of a
frequencies greater than one half of the system sample fre-
Standardized Amusement Ride Characterization Test (SARC
quency manifests itself in the sampled data as a lower
Test) for use in characterizing the dynamic motion of an
frequency (aliased) signal. Aliasing can be avoided only by
amusement ride or device.
limiting the frequency content of the signal prior to the
1.3 The values stated in inch-pound units are to be regarded
sampling process. Once a signal has been aliased, it is not
as standard. The values given in parentheses are mathematical
possible to reconstruct the original signal from the sampled
conversions to SI units that are provided for information only
data.
and are not considered standard.
1.3.1 Exception—The values are reversed in Section 13
3.1.2 calibration constant—the arithmetic mean of the sen-
since EN standards primarily use SI units.
sitivity coefficients, evaluated at frequencies that are evenly
spaced on a logarithmic scale between F and F .
1.4 This international standard was developed in accor-
L H
dance with internationally recognized principles on standard-
3.1.3 calibration value—the ratio of the reference calibra-
ization established in the Decision on Principles for the
tion system output, in engineering units relevant to the
Development of International Standards, Guides and Recom-
transducer, to the data channel output, in volts, as measured at
mendations issued by the World Trade Organization Technical
constant excitation frequency and amplitude.
Barriers to Trade (TBT) Committee.
3.1.4 channel frequency class (CFC)—afrequencyresponse
2. Referenced Documents envelopethatconformstoFig.1andisreferredtobythevalue
2 F in hertz. The CFC frequency response envelope is defined
H
2.1 ASTM Standards:
by the boundaries shown in Fig. 1 and the following charac-
F747Terminology Relating to Amusement Rides and De-
teristic frequencies:
vices
F —Pass band lower limit (hertz). Always equal to zero
3
L
2.2 SAE Standard:
(0.0) hertz.
SAEJ211Instrumentation for Impact Tests
F —Pass band upper limit (hertz). The CFC designator.
4 H
2.3 EN Standard:
F —Thecornerorkneeofthefrequencyresponseenvelope.
N
EN 13814Fairground and amusement park machinery and
Always equal to or greater than 1.667× F .
H
structures - Safety
F —The minimum sample frequency for a sampled data
S
system that corresponds to the designated CFC. Always equal
to or greater than 12× F .
1
H
ThispracticeisunderthejurisdictionofASTMCommitteeF24onAmusement
Rides and Devices and is the direct responsibility of Subcommittee F24.10 on Test
3.1.4.1 Discussion—F , F , F ,and F arealwaysspecified
L H N S
Methods.
in hertz. While the characteristics of the CFC may be applied
Current edition approved Sept. 1, 2018. Published November 2018. Originally
to individual components of a data channel, the CFC is, by
approved in 2001. Last previous edition approved in 2016 as F2137–16. DOI:
10.1520/F2137-18. definition, the frequency response envelope of the entire data
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
channelfromthemountedtransducertothefinalrepresentation
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
of the acquired data.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3.1.5 coordinate system—three orthogonal axes that inter-
3
Available from Society of Automotive Engineers, 400 Commonwealth Drive,
sect at an origin whose positive directions correspond to the
Warrendale, PA 15096.
4
Available from European Committee for Standardization, http://www.cen.eu/. right-hand rule.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F2137 − 18
FIG. 1 Frequency Response Envelope
3.1.5.1 measurement coordinate system—a coordinate sys- 3.1.13 resolution—the lowest magnitude data channel out-
tem that provides the reference axes and sign convention for
put value that can b
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F2137 − 16 F2137 − 18
Standard Practice for
Measuring the Dynamic Characteristics of Amusement
1
Rides and Devices
This standard is issued under the fixed designation F2137; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice covers acquisition of data related to the dynamic characteristics of amusement rides and devices.
1.2 This practice also defines the specific requirements of a Standardized Amusement Ride Characterization Test (SARC Test)
for use in characterizing the dynamic motion of an amusement ride or device.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3.1 Exception—The values are reversed in Section 13 since EN standards primarily use SI units.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
F747 Terminology Relating to Amusement Rides and Devices
3
2.2 SAE Standard:
SAE J211 Instrumentation for Impact Tests
4
2.3 EN Standard:
EN 13814 Fairground and amusement park machinery and structures - Safety
3. Terminology
3.1 Definitions:
3.1.1 aliasing—a phenomenon associated with sampled data systems, wherein a signal containing significant energy at
frequencies greater than one half of the system sample frequency manifests itself in the sampled data as a lower frequency (aliased)
signal. Aliasing can be avoided only by limiting the frequency content of the signal prior to the sampling process. Once a signal
has been aliased, it is not possible to reconstruct the original signal from the sampled data.
3.1.2 calibration constant—the arithmetic mean of the sensitivity coefficients, evaluated at frequencies that are evenly spaced
on a logarithmic scale between F and F .
L H
3.1.3 calibration value—the ratio of the reference calibration system output, in engineering units relevant to the transducer, to
the data channel output, in volts, as measured at constant excitation frequency and amplitude.
3.1.4 channel frequency class (CFC)—a frequency response envelope that conforms to Fig. 1 and is referred to by the value F
H
in hertz. The CFC frequency response envelope is defined by the boundaries shown in Fig. 1 and the following characteristic
frequencies:
F —Pass band lower limit (hertz). Always equal to zero (0.0) hertz.
L
1
This practice is under the jurisdiction of ASTM Committee F24 on Amusement Rides and Devices and is the direct responsibility of Subcommittee F24.10 on Test
Methods.
Current edition approved Oct. 15, 2016Sept. 1, 2018. Published November 2016November 2018. Originally approved in 2001. Last previous edition approved in 20152016
as F2137 – 15a.F2137 – 16. DOI: 10.1520/F2137-16.10.1520/F2137-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096.
4
Available from European Committee for Standardization, http://www.cen.eu/.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F2137 − 18
FIG. 1 Frequency Response Envelope
F —Pass band upper limit (hertz). The CFC designator.
H
F —The corner or knee of the frequency response envelope. Always equal to or greater than 1.667 × F .
N H
F —The minimum sample frequency for a sampled data system that corresponds to the designated CFC. Always equal to or
S
greater than 12 × F .
H
3.1.4.1 Discussion—
F ,F ,F , and F are always specified in hertz. While the characteristics of the CFC may be applied to individual components of
L H N S
a data channel, the CFC is, by definition, the frequency response envelope of the entire data channel from the mounted
...
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