Creep curve cotton

Figure 6. Cotton creep curves, short age times. Age (hours) O, 28 A, 49 ...

A blind test was conducted with a cotton sample 814 days old. A single creep test was performed and the age was estimated. The result achieved was an estimated age of 214 days. This result seems to indicate a rather large error. However, when the datum is plotted, the point is not very far from the curve. In fact, it is quite consistent with the trend set by the data for 47- and 400-year-old samples and suggests that the curve rather than the 814-day datum is incorrect. In view of the limited number of calibration points used to fit the curves, this explanation seems plausible. Consequently, the curve in Figure 8 represents a curve fitted to all cotton specimens measured, including the 814-day specimen. The fitted equations presented here should be used only to evaluate the... 

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