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Torque Wrench Calibration and Uncertainty of Measurement
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bangi, Josephat Obwoge |
| Copyright Year | 2014 |
| Abstract | Torque wrenches (TW) are widely used in the automotive, aviation and building industry. TW are used to control torque in assembly and fastening operations. Regular calibration of torque tools guarantees repeated accuracy and traceability to international standards. At KEBS, a torque wrench calibrator with four interchangeable torque transducers and torque meters are used to calibrate both type I and type II torque wrenches as per ISO 6789:2003. In compliance to “Guide for evaluation of uncertainty in measurement” (GUM), requirement that a complete measurement result should include its uncertainty, a proposed method with an example on how to estimate measurement uncertainties for torque wrenches is presented after taking into account the various influencing quantities. Uncertainty values of ± 2.54 N·m, ±1.15 N·m, and ±1.33 N·m are estimated at 20%, 60% and 100% respectively of the nominal value for a type II class A torque wrench. The aim of this paper is to provide guideline information for TW calibration and uncertainty evaluation. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://erepository.uonbi.ac.ke/bitstream/handle/11295/77283/Torque%20wrenches.pdf?isAllowed=y&sequence=2 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
