INVESTIGATION OF A WELDABLE TYPE, HIGH-TEMPERATURE STRAIN GAGE FOR MEASUREMENT OF STRAIN BY ELECTRICAL. MEANS AT TEMPERATURES UP TO 600° F

摘要

A weldable strain gage could be used to measure high thermal strain on structural steel members at temperatures up to 600℉.nThe tests indi¬cated that unbonded strain data can be used to predict the apparent strain of bonded gages to within 0.07 to 0.4 micro-in./in./ ℉ for temperatures up to 600℉. Gage factors were found, in general, to be lower than those specified by the manufacturer and to decrease from 2.5 to 7.5 percent with temperature at 600℉.