ASTM F2187-02(2019)
(Test Method)Standard Test Method for Determining the Effect of Random Frequency Vibration on a Membrane Switch or Membrane Switch Assembly (Withdrawn 2023)
Standard Test Method for Determining the Effect of Random Frequency Vibration on a Membrane Switch or Membrane Switch Assembly (Withdrawn 2023)
SIGNIFICANCE AND USE
3.1 Vibration encountered in the field is usually random in nature and this test can be used to determine the effects of random excitation on the membrane switch.
3.2 Random vibration can cause mechanical fatigue and failure by switch components either loosening or otherwise changing over time.
3.3 Experience has shown that this test will expose potential failures associated with the electronic components of a membrane switch, where tests of lower levels will not.
3.4 This practice can be used to qualify a membrane switch for aerospace, medical and other applications.
3.5 This test is potentially destructive, intended for device qualification.
SCOPE
1.1 This test method establishes procedures for determining the effect of random vibration, within the specified frequency range, on switch contacts, mounting hardware, adhered component parts, solder or heat stakes, tactile devices, and cable or ribbon interconnects associated with a membrane switch or membrane switch assembly.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
WITHDRAWN RATIONALE
This test method establishes procedures for determining the effect of random vibration, within the specified frequency range, on switch contacts, mounting hardware, adhered component parts, solder or heat stakes, tactile devices, and cable or ribbon interconnects associated with a membrane switch or membrane switch assembly.
Formerly under the jurisdiction of Committee F01 on Electronics, this test method was withdrawn in November 2023. This standard is being withdrawn without replacement because Committee F01 was disbanded.
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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: F2187 − 02 (Reapproved 2019)
Standard Test Method for
Determining the Effect of Random Frequency Vibration on a
Membrane Switch or Membrane Switch Assembly
This standard is issued under the fixed designation F2187; 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 3. Significance and Use
1.1 This test method establishes procedures for determining
3.1 Vibration encountered in the field is usually random in
the effect of random vibration, within the specified frequency nature and this test can be used to determine the effects of
range, on switch contacts, mounting hardware, adhered com-
random excitation on the membrane switch.
ponent parts, solder or heat stakes, tactile devices, and cable or
3.2 Random vibration can cause mechanical fatigue and
ribbon interconnects associated with a membrane switch or
failure by switch components either loosening or otherwise
membrane switch assembly.
changing over time.
1.2 The values stated in SI units are to be regarded as
3.3 Experience has shown that this test will expose potential
standard. No other units of measurement are included in this
failures associated with the electronic components of a mem-
standard.
brane switch, where tests of lower levels will not.
1.3 This standard does not purport to address all of the
3.4 This practice can be used to qualify a membrane switch
safety concerns, if any, associated with its use. It is the
for aerospace, medical and other applications.
responsibility of the user of this standard to establish appro-
3.5 This test is potentially destructive, intended for device
priate safety, health, and environmental practices and deter-
qualification.
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
4. Apparatus
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4.1 Vibration Fixture, capable of holding the unit under test
Development of International Standards, Guides and Recom-
and subjecting it to the specified random frequency and
mendations issued by the World Trade Organization Technical
duration as described in the In-Process Test.
Barriers to Trade (TBT) Committee.
4.2 Contact Closure Detection Device, instrumentation ca-
pable of resolving a switch opening time of greater than or
2. Terminology
equal to 1.0 ms.
2.1 Definitions:
2.1.1 contact closure—the event at which a specified resis-
5. Procedure
tance is achieved on a membrane switch.
5.1 Pre-Test Setup:
2.1.2 membrane switch—a momentary switching device in
5.1.1 Secure membrane switch on vibration test surface
which at least one contact is on, or made of, a flexible
with appropriate fixturing.
substrate.
5.1.2 Function testing to be specified and performed again
2.1.3 specified resistance—maximum allowable circuit re-
after test completion for comparison.
sistance as measured between two test points whose internal
5.1.3 Connect switch detection leads to test points on the
contacts, when held closed, complete a circuit.
me
...
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: F2187 − 02 (Reapproved 2019)
Standard Test Method for
Determining the Effect of Random Frequency Vibration on a
Membrane Switch or Membrane Switch Assembly
This standard is issued under the fixed designation F2187; 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 3. Significance and Use
1.1 This test method establishes procedures for determining 3.1 Vibration encountered in the field is usually random in
the effect of random vibration, within the specified frequency nature and this test can be used to determine the effects of
range, on switch contacts, mounting hardware, adhered com- random excitation on the membrane switch.
ponent parts, solder or heat stakes, tactile devices, and cable or
3.2 Random vibration can cause mechanical fatigue and
ribbon interconnects associated with a membrane switch or
failure by switch components either loosening or otherwise
membrane switch assembly.
changing over time.
1.2 The values stated in SI units are to be regarded as
3.3 Experience has shown that this test will expose potential
standard. No other units of measurement are included in this
failures associated with the electronic components of a mem-
standard.
brane switch, where tests of lower levels will not.
1.3 This standard does not purport to address all of the
3.4 This practice can be used to qualify a membrane switch
safety concerns, if any, associated with its use. It is the
for aerospace, medical and other applications.
responsibility of the user of this standard to establish appro-
3.5 This test is potentially destructive, intended for device
priate safety, health, and environmental practices and deter-
qualification.
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
4. Apparatus
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 4.1 Vibration Fixture, capable of holding the unit under test
Development of International Standards, Guides and Recom-
and subjecting it to the specified random frequency and
mendations issued by the World Trade Organization Technical
duration as described in the In-Process Test.
Barriers to Trade (TBT) Committee.
4.2 Contact Closure Detection Device, instrumentation ca-
pable of resolving a switch opening time of greater than or
2. Terminology
equal to 1.0 ms.
2.1 Definitions:
2.1.1 contact closure—the event at which a specified resis-
5. Procedure
tance is achieved on a membrane switch.
5.1 Pre-Test Setup:
2.1.2 membrane switch—a momentary switching device in
5.1.1 Secure membrane switch on vibration test surface
which at least one contact is on, or made of, a flexible
with appropriate fixturing.
substrate.
5.1.2 Function testing to be specified and performed again
after test completion for comparison.
2.1.3 specified resistance—maximum allowable circuit re-
5.1.3 Connect switch detection leads to test points on the
sistance as measured between two test points whose internal
membrane switch.
contacts, when held closed, complete a circuit.
2.1.4 test points—two pre-selected conductive points in a 5.2 In-Process
...
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