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Significance and Use
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.
Random vibration can cause mechanical fatigue and failure by switch components either loosening or otherwise changing over time.
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.
This practice can be used to qualify a membrane switch for aerospace, medical and other applications.
This test is potentially destructive, intended for device qualification.
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 and health practices and determine the applicability of regulatory limitations prior to use.
ICS Number Code 29.120.40 (Switches)
UNSPSC Code 39122200(Electrical switches and accessories)
ASTM F2187-02(2011), Standard Test Method for Determining the Effect of Random Frequency Vibration on a Membrane Switch or Membrane Switch Assembly, ASTM International, West Conshohocken, PA, 2011, www.astm.orgBack to Top