HW#1Assignment

HW#1Assignment - ME 3260 Homework #1 MEASUREMENT TECHNIQUES...

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ME 3260 Homework #1 MEASUREMENT TECHNIQUES Due on February 16, 2010 Dr. B. Zhang (Instructor) Office Hours UTE Building, Room 384 and by appointment Phone: 486-2072 zhang@engr.uconn.edu 1. A strain gage having a nominal resistance of 350 , and a gauge factor of 1.8 is mounted in an equal-arm bridge, which is balanced at a zero applied strain condition. The gauge is mounted on a 1.0-cm 2 aluminum rod, having E m =70. GPa. The gauge senses axial strain. The bridge output is 1.0 mV for a bridge input of 5.0 V. What is the applied load, assuming the rod is in uni-axial tension? 2. Consider a structural member subject to loads that produce both axial and bending stresses, as shown in Fig. 1a. Two strain gauges are to be mounted on the member and connected in a Wheatstone bridge (Fig. 1b) in such a way that the bridge output indicates the axial component of strain only (the installation is bending compensated). Show that the installation of the gauges shown in Fig. 1a will not be sensitive to bending.
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HW#1Assignment - ME 3260 Homework #1 MEASUREMENT TECHNIQUES...

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