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Dr. James Madsen
james.madsen@uwrf.edu
125 Centennial Science Hall
522 S. Sixth Street
Mail: 410 S. Third Street
River Falls, WI 54022

(715) 425-3235
Fax (715) 425-0652

 

Dynamic Mechanical Analysis of different shading materials

IceCube 2007 Home

Here are several graphs of data obtained from D.M.A. tests on two different materials. There are normalized comparisons of the loss and storage moduluses at the bottom.

First is our the black and white plastic material. Its data is displayed in red in the first three graphs.

Sample Statistics

Width 2.0 mm
Depth 0.20 mm
Length 4.51 mm

Initial Test Conditions

Static Force 1650 mN
Dynamic Force
1500 mN
Tan Delta
0.143
Loss Modulus
6.8380e7 Pa
Storage Modulus
4.7888e8 Pa
Amplitude
34.628e-6 m

Next is the leather like material from Bartol. Its data is displayed in blue in the first three graphs.

Sample Statistics

Width
3.0 mm
Depth
0.358 mm
Length
5.579 mm

Initial Test Conditions

Static Force
70.0 mN
Dynamic Force
63.0 mN
Tan Delta
0.598
Loss Modulus
3.0692e6 Pa
Storage Modulus
5.1013e6 Pa
Amplitude
52.136e-6 m

Comparison of the tan deltas

Comparison of the loss moduli

Comparison of the storage moduli

Normalized Comparisons

Here are the comparisons of the moduluses. Each graph is normalized to the room temperature value. The Bartol material (pink) is shown to have drastic changes in its moduluses over the temperature range. Its loss modulus increases to 13 times the room temperature value, and its storage modulus increases to 25 times the room temperature value. The black and white material has a total change of nearly zero in its loss modulus, and only increases the storage modulus to 3 times its original value.

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