Crack analysis tension - racket is be more brittle and thus...

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Using the FRANC program, analysis of the tension placed on the rackets after cracks formed were also conducted. When racket 1 was composed of Cobalt, there was a significant reaction force applied by the propagated cracks. The center of tension formed opposite to the crack, extending forces in various directions throughout the side of the racket. This material used for racket 1 was then compared to titanium. Here, the center of tension formed on the same side of the crack and the force was condensed in one area rather than dispersed throughout the head of the tennis racket. This smaller tension implies that the effects on the racket would not be very severe and failure would not occur. Afterwards, racket 3 was composed of both cobalt and titanium. With cobalt as its material, the propagated crack caused a reactive force around the lower region of the racket. This would obviously cause failure if the racket was dropped. This area on the
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Unformatted text preview: racket is be more brittle and thus would fracture more easily. When racket 3 is created with titanium, the area of tension is in a much more localized region. Based on this, this would not cause failure because the mechanical properties of titanium restrict the dispersing of the reactive force caused by the propagated crack. Based on the analysis of the tension formed by the propagation cracks, it would seem that titanium is a more appropriate material to use when it comes to resisting failure due to tensile stress. In addition, racket 3 is a sturdier piece of equipment to use when it comes to avoiding failure. By localizing the tensile regions of the cracks, it becomes less likely that fracture around the rest of the racket will occur. In contrast, the cobalt material causes extensive tension on the head of the racket, most probably causing failure. Racket 1 Cobalt crack Racket 3 Titanium...
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This note was uploaded on 03/31/2008 for the course MSE 261 taught by Professor Sass during the Fall '06 term at Cornell University (Engineering School).

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