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Qualifying Capacitive Sensing Hole Measurement System Technology using Gage R&R Analysis
Technical Paper
2008-01-2314
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The Capacitec CMS3 Reader, coupled with the CHP 48 sensor probe, achieves +/−3μm accuracy by mapping 24 diameters in high tolerance drill holes for the manufacture of composite or metal aircraft components. Gage repeatability and reproducibility (gage R&R) studies presented will show better than +/−0.0001 inches (2.5μ m) for this measurement technique. Using noncontact inspection for quality control is a way to perform this inspection more efficiently than traditional contact measuring instruments, while reducing sampling time compared to other methods. Gage repeatability is improved using non-contact methods because capacitive sensing at short distances has a linear and predictable correlation to displacement. Gage reproducibility is also better because different users introduce a different touch using bore gages and other contact measuring devices. In conclusion, using a probe that profiles 24 diameters at the click of a button using non-contact capacitance technology not only saves time but is a significant improvement to overall gage R&R.
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Citation
Magee, R., "Qualifying Capacitive Sensing Hole Measurement System Technology using Gage R&R Analysis," SAE Technical Paper 2008-01-2314, 2008, https://doi.org/10.4271/2008-01-2314.Also In
References
- “The Capacitive Measuring System” October 21 1985
- Waxer Charles “Process Capability (Cp, Cpk) and Process Performance (Pp, Cpk) what is the Difference?”
- Foster R.L. “Linear Capacitive Reactance Sensors for Industrial Applications” 40 th Annual Earth moving industry Conference 1989