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ASTM F1762-14

(Test Method)

Standard Test Method for Determining the Effects of Atmospheric Pressure Variation on a Membrane Switch (Withdrawn 2023)

Standard Test Method for Determining the Effects of Atmospheric Pressure Variation on a Membrane Switch (Withdrawn 2023)

SIGNIFICANCE AND USE
4.1 Erratic operation or malfunction of a membrane switch resulting from changes in the specified switch characteristics,  
4.2 Rupture, implosion or explosion of seals due to pressure variations,  
4.3 Change in physical or chemical properties due to pressure differentiations, and  
4.4 Delaminations of a membrane switch may occur due to pressure variations.
SCOPE
1.1 This test method covers a procedure for exposing a membrane switch to variations in atmospheric pressure. It can be used to determine the effects of pressure variations on chemical and mechanical properties and functional characteristics of the switch.
WITHDRAWN RATIONALE
This test method covers a procedure for exposing a membrane switch to variations in atmospheric pressure. It can be used to determine the effects of pressure variations on chemical and mechanical properties and functional characteristics of the switch.
Formerly under the jurisdiction of Committee F01 on Electronics, this test method was withdrawn in January 2023 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the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Withdrawn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-Dec-2013
Withdrawal Date
10-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 F1762-14 - Standard Test Method for Determining the Effects of Atmospheric Pressure Variation on a Membrane Switch (Withdrawn 2023)ASTM F1762-14 - Standard Test Method for Determining the Effects of Atmospheric Pressure Variation on a Membrane Switch (Withdrawn 2023)
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ASTM F1762-14 - Standard Test Method for Determining the Effects of Atmospheric Pressure Variation on a Membrane Switch (Withdrawn 2023)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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: F1762 − 14
Standard Test Method for
Determining the Effects of Atmospheric Pressure Variation
1
on a Membrane Switch
This standard is issued under the fixed designation F1762; 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 3.1.4 specified resistance—the maximum allowable circuit
resistance as measured between two test points whose internal
1.1 This test method covers a procedure for exposing a
contacts, when held closed, complete a circuit.
membrane switch to variations in atmospheric pressure. It can
be used to determine the effects of pressure variations on
3.1.5 test points—two preselected conductive points in a
chemical and mechanical properties and functional character- circuit loop, possibly including a switch.
istics of the switch.
4. Significance and Use
2. Referenced Documents
4.1 Erratic operation or malfunction of a membrane switch
2
resulting from changes in the specified switch characteristics,
2.1 ASTM Standards:
F1595 Practice forViewing Conditions forVisual Inspection
4.2 Rupture, implosion or explosion of seals due to pressure
of Membrane Switches
variations,
F1663 Test Method for Determining the Capacitance of a
4.3 Change in physical or chemical properties due to pres-
Membrane Switch
sure differentiations, and
F1680 Test Method for Determining Circuit Resistance of a
Membrane Switch
4.4 Delaminations of a membrane switch may occur due to
F1689 Test Method for Determining the Insulation Resis-
pressure variations.
tance of a Membrane Switch
F1895 Test Method for Submersion of a Membrane Switch
5. Interferences
F2592 Test Method for Measuring the Force-Displacement
5.1 Time duration before, during and after pressure cycling,
of a Membrane Switch
5.2 Temperature,
3. Terminology
5.3 Humidity,
3.1 Definitions:
5.4 Mounting Method (if applicable).
3.1.1 circuit resistance—electrical resistance as measured
between two test points whose internal contacts, when held
6. Apparatus
closed, complete a circuit.
3.1.2 contact closure—the event at which a specified resis- 6.1 Pressure Chamber, a chamber or cabinet capable of
tance is achieved on a membrane switch. maintaining a specified pressure. If procedurally required, the
apparatus shall be capable of providing pressure variation at a
3.1.3 membrane switch—a momentary switching device in
specified rate.
which at least one contact is on, or made of, a flexible
substrate.
6.2 Monitoring Device, suitable to detect contact closure
(that is, ohm meter, etc.).
1
This test method is under the jurisdiction of ASTM Committee F01 on
7. Conditioning
Electronics and is the direct responsibility of Subcommittee F01.18 on Membrane
Switches. 7.1 Condition all specimens for 72 h at ambient laboratory
Current edition approved Jan. 1, 2014. Published January 2014. Originally
conditions immediately prior to exposure, or prior to pressure
approved in 1996. Last previous edition approved in 2007 as F1762–07. DOI:
cycling. This is to enable the specimens to stabilize.
10.1520/F1762-14.
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
8. Procedure
Standards volume information, refer to the standard’s Document Summary page on
the ASTM web
...

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1.2 Despite the problems associated with a tape test on plastic substrates, it is our belief that this is still one of the best ways to test ink and coating for adhesion for membrane switch or printed electronic device applications. In writing this test method we are addressing several of the objections to the test method that could affect its precision and repeatability on plastic substrates.  
1.3 These test methods cover whether the adhesion of coating or ink to a substrate is at an acceptable level. They do not distinguish between higher levels of adhesion, for which more sophisticated methods of measurement may be required.
Note 1: It should be recognized that differences in adherability of the ink or coating surface can affect the results obtained with inks or coatings having the same inherent adhesion.  
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