ASTM F1578-07(2014) PDF

Scope: 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.

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.

ASTM F1578-07(2014) Referenced Document

ASTM D2240 Standard Test Method for Properties of Rubber &8212; Durometer Hardness*， 2024-04-20 Update
ASTM F1596 Standard Test Method for Exposure of a Membrane Switch or Printed Electronic Device to Temperature and Relative Humidity*， 2024-04-20 Update
ASTM F1661 Standard Test Method for Determining the Contact Bounce Time of a Membrane Switch
ASTM F1662 Standard Test Method for Verifying the Specified Dielectric Withstand Voltage of a Member Switch
ASTM F1663 Standard Test Method for Determining the Capacitance of a Membrane Switch
ASTM F1680 Standard Test Method for Determining Circuit Resistance of a Membrane Switch
ASTM F1689 Standard Test Method for Determining the Insulation Resistance of a Membrane Switch
ASTM F2592 Standard Test Method for Measuring the Force-Displacement of a Membrane Switch

2007 ASTM F1578-07(2014) Standard Test Method for Contact Closure Cycling of a Membrane Switch
2007 ASTM F1578-07 Standard Test Method for Contact Closure Cycling of a Membrane Switch
2001 ASTM F1578-01 Standard Practice for Contact Closure Cycling of a Membrane Switch
2000 ASTM F1578-00 Standard Practice for Contact Closure Cycling of a Membrane Switch