COMPACT FORCE SENSORS FOR LOW-FORCE MECHANICAL PROBE CALIBRATION
Abstract
The loading mechanisms of instrumented indentation machines are often calibrated using deadweights. In many cases, due to the geometry of the loading frame, the applied deadweight is tensile, while the indentation loads to be measured are compressive. In this paper, we report preliminary efforts to develop a compressive load cell for use on a typical instrumented indentation machine. Two devices were evaluated, one a compact capacitance-based device (fabricated at the National Institute of Standards and Technology), the other a piezoresistive force sensor. We will describe the calibration sensitivity, stability and drift of each, and discuss the potential use of each as a force transfer artifact for the calibration of instrumented indenters.
Event details
- Event
- Joint International Conference on Force, Mass, Torque, Hardness and Civil Engineering Metrology in the age of globalization
- Technical Committee
- TC3
- Place
- Celle, GERMANY
- Time
- 24 September 2002 - 26 September 2002