Abstract
Computer-controlled data-acquisition systems are being used extensively for gathering strain-gage data. This paper explores the relative merits of using modern solidstate digital multi-meters (DDM) to measure the strain-gage resistance directly rather than using a conventional Wheatstone bridge. Both a direct-resistance measurement scheme and a reversed current scheme are compared over long measurements terms of 6 and 12 days using a 6 1/2-digit multimeter. The results show that the reversed current method is superior in maintaining the zero-gage resistance reading at the cost of using several meters. Possibly the direct-resistance method can be improved so that the operation and equipment can be simplified.
Original language | English |
---|---|
Pages (from-to) | 88-92 |
Number of pages | 5 |
Journal | Experimental Mechanics |
Volume | 31 |
Issue number | 1 |
DOIs | |
Publication status | Published - Mar 1991 |
ASJC Scopus subject areas
- Mechanics of Materials
- Computational Mechanics