Independent Testing Results
| Sample Number | Specimen Type | Width | Type of Break | Capacity (J) | Impact Strength (ft*lb/in) | Impact Strength (J/m) | Standard Deviation (ft*lb/inm) | Standard Deviation(J/m) | COV |
GL-18-232 | C – N | 0.125 | C | 5.5 | 1.72 | 91.67 | 0.109 | 5.805 | 6.56% |
GL-18-233 | C – N | 0.127 | C | 5.5 | 1.81 | 96.49 | 0.109 | 5.805 | 6.56% |
GL- 19-234 | C – N | 0.0125 | H | 5.5 | 1.58 | 84.33 | 0.095 | 5.701 | 6.41% |
| Sample Number | Specimen Type | Width | Depth | Anvil height | Load (Compressive Strain 10 %) | Stress (Compressive Stress 10%) | Modulus of Elasticity |
[in] | [in] | [in] | [lbf] | [psi] | [psi] | ||
GL-19-234 | C-N | 0.505 | 0.504 | 1.002 | 428.9 | 1,685 | 69,634 |
GlL-18-232 | C-N | 0.501 | 0.503 | 1.001 | 401.2 | 1,592 | 86,289 |
GL-18-233 | C-N | 0.503 | 0.5 | 1.001 | 419.5 | 1,668 | 91,738 |
| Sample Number | Specimen Type | Anvil height | Load at Break (Standard) | Extension at Break (Standard) | Compressive stress at Break (Standard) | Modulus (automatic youngs) |
[in] | [lbf] | [in] | [psi] | [psi] | ||
GL-18-232 | C-N | 2.31 | 53651.29 | 0.142 | 1315 | 27601 |
Gl-18-233 | C-N | 2.31 | 54032.76 | 0.14 | 1324 | 28890 |
St. Dev. | 0 | 269.742 | 0.002 | 6.611 | 912 | |
COV | 0 | 0.501 | 1.09 | 0.501 | 3 |
| Sample Number | Sliding Coefficient of Friction #1 | Static Coefficient of Friction #2 | Static Coefficient of Friction #3 | |
GL-18-232 | 2 | 0.27124 | 0.3552 | 0.4704 |
GL-18-233 | 3 | 0.27694 | 0.351 | 0.4581 |
GL-19-234 | 4 | 0.26791 | 0.3469 | 0.4791 |
St. Dev | 0.004 | 0.004 | 0.013 | |
COV | 1.476 | 1.19 | 2.714 |
Composite Materials Technology Center
Winona State University
Winona, MN 55987
Instron Corporation Model 5585H
Bluehill Ver. 3.53 Automated Materials Testing System
Test Date: Monday, July 01, 2019
ASTM D695 – “Compressive Properties of Rigid Plastics”
Rate 1 | 0.05000 in/min |
Load Cell | 50 kN |
Last Calibration | 09-18-18 |
Humidity | 45% |
Temperature | 70ºF |
Operator | Benson |
Paul Schmitt – Compression – Gray Material
Width [in] | Depth [in] | Anvil height [in] | Load (Compressive strain 10 %) [lbf] | Compressive stress (Compressive strain 10 %) [psi] | Modulus of Elasticity [psi] | |
1 | 0.504 | 0.504 | 0.995 | 747.7 | 2,943 | 105,864 |
2 | 0.502 | 0.500 | 0.996 | 732.1 | 2,917 | 110,298 |
3 | 0.505 | 0.504 | 0.997 | 769.2 | 3,022 | 112,013 |
4 | 0.503 | 0.500 | 0.995 | 757.3 | 3,011 | 105,146 |
5 | 0.500 | 0.503 | 0.998 | 755.7 | 3,005 | 104,494 |
Mean | 0.503 | 0.502 | 0.996 | 752.4 | 2,980 | 107,563 |
St. Dev. | 0.002 | 0.002 | 0.001 | 13.711 | 46.646 | 3370.223 |
COV | 0.383 | 0.408 | 0.131 | 1.822 | 1.565 | 3.133 |
