Abstract
The present study provides the performance evaluation of 2×2 twill woven composite (S2-Glass and C-50 resin system) material for Integral Armor applications. The laminates were fabricated by two low cost processes: RTM (Resin Transfer Molding) and VARIM or RI (Vacuum Assisted Resin Infusion Molding). These components are expected to be under fatigue loading. Fatigue behavior of the twill woven laminate is presented. Tension-Compression (R = -1) fatigue experiments were performed for both RI and RTM panels. All the fatigue tests were performed at 1 Hz frequency. S-N diagram and stiffness degradation over the fatigue life of the specimen was obtained. The fatigue tests indicated that with the same volume of fibers and with more resin, RTM process improved the fatigue performance over RI process. The ratios of logarithm of fatigue life cycles of RTM and RI is almost constant. Therefore on the absolute scale the ratio keeps increasing at higher fatigue life or at lower fatigue loads. However, with the same volume of fibers and resin, the fatigue performance of RTM and RI processed panels were comparable. It was also observed that both RTM and RI exhibited classical three-stage degradation in stiffness.
| Original language | English |
|---|---|
| Title of host publication | Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference |
| Publisher | AIAAReston, VA, United States |
| Pages | 2003-2008 |
| Number of pages | 6 |
| Volume | 3 |
| State | Published - Jan 1 1999 |
| Event | Proceedings of the 1999 AIAA/ASME/ASCE/AHS/ASC Structrures, Structural Dynamics, and Materials Conference and Exhibit - St. Louis, MO, USA Duration: Apr 12 1999 → Apr 15 1999 |
Conference
| Conference | Proceedings of the 1999 AIAA/ASME/ASCE/AHS/ASC Structrures, Structural Dynamics, and Materials Conference and Exhibit |
|---|---|
| City | St. Louis, MO, USA |
| Period | 04/12/99 → 04/15/99 |