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Damage Morphology for Advanced Concretes

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8651-19-C-0120
Agency Tracking Number: F18A-012-0015
Amount: $746,743.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: AF18A-T012
Solicitation Number: 18.A
Solicitation Year: 2018
Award Year: 2019
Award Start Date (Proposal Award Date): 2019-06-14
Award End Date (Contract End Date): 2021-06-14
Small Business Information
2715 Broadbent Parkway Suite F
Albuquerque, NM 87107
United States
DUNS: 809748002
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Danny Frew
 (505) 270-3088
Business Contact
 Danny Frew
Phone: (505) 270-3088
Research Institution
 Southern Methodist Univeristy
 Professor Xu Nie Professor Xu Nie
6425 Boaz Lane
Dallas, TX 75205
United States

 (214) 768-1332
 Nonprofit College or University

The development and implementation of new damage morphology models for concrete materials is critical to understanding their dynamic behavior during severe shock loading environments. Current constitutive models of conventional strength concretes do not accurately represent the behavioral characteristics of new ultra-high strength concretes because of differences in damage mechanisms during failure. Specifically, experimental data suggests that the fracture behavior of the ultra-high strength materials do not behave the same under failure loadings. The objective of this research is to conduct quasi-static and dynamic testing on concrete materials, beyond peak load, and utilize a relatively new X-ray computed tomography technique to non-destructively map the damage morphology of the materials and relate quantitatively the observed damage to constitutive models that can better predict dynamic loading events such as penetration with steel projectiles. In Phase I, we developed and validated damage morphology testing techniques through limited experiments on ultra high-strength concrete samples in dynamic compression experiments. During the Phase II effort, testing will be completed on a conventional and ultra-high-strength concrete samples, damage phenomenologies will be studied, and computational concrete models will be modified and validated for these new concrete materials.

* Information listed above is at the time of submission. *

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