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ASTM F1578-07(2014)

(Test Method)

Standard Test Method for Contact Closure Cycling of a Membrane Switch (Withdrawn 2023)

Standard Test Method for Contact Closure Cycling of a Membrane Switch (Withdrawn 2023)

SIGNIFICANCE AND USE
4.1 This testing is performed to determine the electrical contact reliability under switching conditions and the physical changes caused by mechanical actuation of the switch assembly in the environments in which the assemblies operate. Evidence of deterioration, that is, cracking of substrate, domes both metal and polyester, ink delamination, etc., resulting from this test can at times be determined by visual examination. However, the effects may be more readily ascertained by measurements made prior to, during, and after exposure. Total circuit resistance, force-displacement, dielectric strength, insulation resistance, and capacitance are types of measurements that show the deleterious effects due to exposure.
SCOPE
1.1 This test method covers the setup, procedure, and apparatus required to depress and release a membrane switch to a predetermined number of cycles.  
1.2 This test method also covers the optional use of specified voltage and current during the cycling of the membrane switch.  
1.3 This test method can be used in conjunction with other ASTM standards such as Test Method F1596.  
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.
WITHDRAWN RATIONALE
This test method covers the setup, procedure, and apparatus required to depress and release a membrane switch to a predetermined number of cycles.
Formerly under the jurisdiction of Committee F01 on Electronics, this test method was withdrawn in January 2023 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

Status
Withdrawn
Publication Date
31-May-2014
Withdrawal Date
09-Jan-2023
ICS
31.220.20 - Switches
Technical Committee
F01 - Electronics
Drafting Committee
F01.18 - Printed Electronics
Current Stage
Ref Project

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ASTM F1578-07(2014) - Standard Test Method for Contact Closure Cycling of a Membrane Switch (Withdrawn 2023)ASTM F1578-07(2014) - Standard Test Method for Contact Closure Cycling of a Membrane Switch (Withdrawn 2023)
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ASTM F1578-07(2014) - Standard Test Method for Contact Closure Cycling of a Membrane Switch (Withdrawn 2023)
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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: F1578 − 07 (Reapproved 2014)
Standard Test Method for
Contact Closure Cycling of a Membrane Switch
This standard is issued under the fixed designation F1578; 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 F2592 Test Method for Measuring the Force-Displacement
of a Membrane Switch
1.1 This test method covers the setup, procedure, and
apparatusrequiredtodepressandreleaseamembraneswitchto
3. Terminology
a predetermined number of cycles.
3.1 Definitions:
1.2 This test method also covers the optional use of speci-
3.1.1 contact closure—the event at which a specified resis-
fied voltage and current during the cycling of the membrane
tance is achieved.
switch.
3.1.2 duty cycle—the ratio of switch closed time to total
1.3 This test method can be used in conjunction with other
cycle time.
ASTM standards such as Test Method F1596.
3.1.3 test rate—the number of depressions and release
1.4 This standard does not purport to address all of the
cycles per second.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3.1.4 membrane switch—a momentary switching device in
priate safety and health practices and determine the applica-
which at least one contact is on, or made of, a flexible
bility of regulatory limitations prior to use.
substrate.
2. Referenced Documents
4. Significance and Use
2.1 ASTM Standards:
4.1 This testing is performed to determine the electrical
D2240 Test Method for Rubber Property—Durometer Hard-
contact reliability under switching conditions and the physical
ness
changes caused by mechanical actuation of the switch assem-
F1596 Test Method for Exposure of a Membrane Switch or
bly in the environments in which the assemblies operate.
Printed Electronic Device to Temperature and Relative
Evidence of deterioration, that is, cracking of substrate, domes
Humidity
both metal and polyester, ink delamination, etc., resulting from
F1661 Test Method for Determining the Contact Bounce
this test can at times be determined by visual examination.
Time of a Membrane Switch
However, the effects may be more readily ascertained by
F1662 Test Method for Verifying the Specified Dielectric
measurements made prior to, during, and after exposure. Total
Withstand Voltage and Determining the Dielectric Break-
circuit resistance, force-displacement, dielectric strength, insu-
downVoltageofaMembraneSwitchorPrintedElectronic
lation resistance, and capacitance are types of measurements
Device
that show the deleterious effects due to exposure.
F1689 Test Method for Determining the Insulation Resis-
tance of a Membrane Switch
5. Apparatus
F1663 Test Method for Determining the Capacitance of a
Membrane Switch or Printed Electronic Device
5.1 Suitable Electronic Monitoring Device, to detect and
F1680 Test Method for Determining Circuit Resistance of a
count contact closure at a predetermined or specified test rate
Membrane Switch
and duty cycle.
5.2 Surface, flat, smooth, unyielding, and larger than the
This test method is under the jurisdiction of ASTM Committee F01 on
switch.
Electronics and is the direct responsibility of Subcommittee F01.18 on Printed
Electronics.
5.3 Test Probes, built to either of the configurations shown
Current edition approved June 1, 2014. Published June 2014. Originally
in Fig. 1 or Fig. 2, are acceptable but must be made of an inert
approved in 1995. Last previous edition approved in 2007 as F1578 – 07. DOI:
10.1520/F1578-07R14.
elastomeric material with a hardness number equivalent to
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
A/45 65 as measured in accordance with Test Method D2240.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Test probes that do not meet this criteria must be specified and
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. recorded fully.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1578 − 07 (2014)
6.1.8 Testing should be done
...

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