APP52: MEMS Strain Gauge on Steel: Test Fixture Design


The overall project aims to design a MEMS strain gauge that can be bonded directly to steel and accurately measure strain in small strain fields (gauge length of 1 mm or less). In order to verify the group’s designs, I have designed and fabricated a four-point bend test fixture. Strain will be induced in smooth, steel bar stock large enough to allow MEMS and conventional foil strain gauges to be tested simultaneously. The four-point bend test will be used to verify the MEMS strain gauge system-level performance. Further, it will allow comparison of the MEMS gauges to conventional gauges. Initial test with conventional foil strain gauges are complete. The test results verify proper working order of the test rig and measurement equipment as well as provide a benchmark for upcoming MEMS strain gauge designs.

Project end date: 08/11/03

Robert G. Azevedo
Publication date: 
July 30, 2003
Publication type: 
BSAC Project Materials (Final/Archive)
PREPUBLICATION DATA - ©University of California 2003

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