2. An article in the Journal of Composite Materials (December 1989, Vol. 23, p. 1200) describes the effect of delamination on the natural frequency of beams made from composite laminates. Five such...


2. An article in the Journal of Composite Materials (December 1989, Vol. 23, p. 1200) describes the<br>effect of delamination on the natural frequency of beams made from composite laminates. Five<br>such delaminated beams were subjected to loads, and the resulting frequencies (in hertz) were<br>as follows:<br>230.66 233.05 232.58 229.48 232.58<br>a. Calculate a 99% two-sided confidence interval on mean natural frequency.<br>

Extracted text: 2. An article in the Journal of Composite Materials (December 1989, Vol. 23, p. 1200) describes the effect of delamination on the natural frequency of beams made from composite laminates. Five such delaminated beams were subjected to loads, and the resulting frequencies (in hertz) were as follows: 230.66 233.05 232.58 229.48 232.58 a. Calculate a 99% two-sided confidence interval on mean natural frequency.

Jun 03, 2022
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