Experimental engineering and manual for testing (1903)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & sons; [etc., etc.] · leaf 102
Fig. 53. 114 EXPERIMENTAL ENGINEERING. [§S6. drum. It is at once evident that any extension of the speci-men SS will draw in the free end of the cord at twice therate of the extension ; moreover, any slight swinging or rock-ing of the extensometer head will produce compensatingeffects on the length… … Fig. 54. Fig. 55. of the specimen. As this work may be done against a fixedpull, there may be a uniform tension on the cord so that themotion of the drum would be uniform and proportional to thestretch. A pencil is moved along the axis of the drum pro-portional to the motion of the poise. An…
Building materials · Machinery
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