ASTM F19
Theory:
Metal to Ceramic Seals are often used in the Aerospace and Rocketry industry to protect electronics in harsh environments. High/Low Temperature and High/Low Pressure Environment can wreak havoc on mission critical electronics. These electronics are held in vacuums to protect them. These vacuums are sealed with Ceramic to Metal sealants.
This tensile test seeks to help characterize various sealants and adhesives used in Ceramic to Metal Interfaces.
Geometry:
The samples consist of two small flange shaped rings that are glued together. They are 1.115" in diameter. The sample look similar to the button head style tensile samples, however it is relatively short. Please see below for a sample picture.
Solution:
ASTM F19 requires a made-to-order fixture. Please see below the attached data sheet for ASTM F19.
This fixture can be customized or changed in anyway. It also usually includes the centering device (shown on page 2 of the schematic.)
Analysis:
The results for this test are relatively straight forward. The ultimate tensile strength is measured and compared against various other samples to determine which sealant is optimal.
This test is also often done under elevated, or lowered temperatures. Universal Grip offers a full line of standard and customizable environmental chambers.
