Conduction-cooled accelerated test fixture
View Patent ↗According to one embodiment of the invention, a testing apparatus for executing highly accelerated life testing on at least one test subject including at least one structure operable to thermally stress the test subject via conduction and at least one pneumatic hammer operable to input imparting vibrations to the test subject. According to another embodiment of the invention, a method for executing highly accelerated life testing of at least one test subject via conduction at a rate of change of at least 8 ° C. per minute and imparting vibrations to the test subject at a rate of at least 3Gs rms.
1. A testing apparatus for executing testing on at least one test subject, comprising:
a first set of channels for cooling the at least one test subject by conduction, comprising:
at least one first cooling channel operable to receive a supply of liquid nitrogen and further operable to distribute the supply of liquid nitrogen to at least one second cooling channel;
the at least one second cooling channel, connected to the at least one first cooling channel, operable to receive the supply of liquid nitrogen from the at least one first cooling channel and further operable to distribute the supply of liquid nitrogen to at least one third cooling channel; and
the at least one third cooling channel, connected to the at least one second cooling channel, operable to receive the supply of liquid nitrogen from the at least one second cooling channel and further operable to cool by conduction a structure that is operable to cool by conduction the test subject; and
a second set of channels for heating the at least one test subject by conduction, comprising:
at least one first heating channel operable to receive at least one heating rod and further operable to heat by conduction a structure that is operable to heat by conduction the at least one test subject.
2. The testing apparatus of claim 1 , wherein the at least one third cooling channel is at least substantially perpendicular to the at least one first heating channel.
3. The testing apparatus of claim 1 , wherein the at least one third cooling channel comprises:
vents operable to allow nitrogen gas to exit from the at least one third cooling channel; and
openings operable to regulate the cooling of the structure that is operable to cool by conduction the at least one test subject.