2,685,100 operation cycles later, the polycarbonate panel showed no signs of degradation.
Life Cycle Testing Method:
A 0.007 inch thick imaged polycarbonate light panel from Lumvatech was assembled atop a standard 12 key membrane switch manufactured by SSI Electronics Inc.
The membrane switch was made with 12 mm, 340 gram operate force stainless steel tactile domes. No graphic overlay was used for this mechanical life test. The actuation force was 2.9 pounds delivered through a round 45 durometer silicone rubber actuator.
The target life for this test was 1,000,000 (1 million) operations.
Life Cycle Test Results:
Key location 7 on the pictured switch matrix was tested with the Lumvatech panel imaged area.
The polycarbonate was checked at 850,000 operations and showed no signs of deterioration.
The test was continued past the target of 1,000,000 operations to 2,685,100 cycles.
The polycarbonate showed no signs of degradation. No visible mechanical cracking, no discernable deformation, or other physical deterioration was detected.
Photos, test equipment, and test results courtesy of SSI Electronics Inc.
See the full test report at:
Lumvatech is a leading U. S. based manufacturer of ultra thin planar light panels that provides solutions from simple logo backlighting to complete user interfaces and hand held marketing displays to fully interactive large promotional materials.
To gain additional information please see Lumvatech.com or email to firstname.lastname@example.org. For a review of Lumvatech’s product portfolio see our Lumvatech channel at youtube http://www.youtube.com/