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Search Results: Deterioration research

Fundamental research in deterioration and durability of structures and materials has shown great potential for increasing the life span of the United...



= Encyclopedia Article; = Research Update
Figure 1.Photodegradation apparatus. (Courtesy of J. Chin, NIST)
Figure 2.Chong cycle (500 h): (a) 70 h at -23°C (-9.4°F). (b) 215 h, alternating 4 h UVA (320–400 nanometers) exposure at 60°C (140°F), followed by 4 h condensation at 40°C (104°F). (c) 215 h, alternating 1 h salt fog at 35°C (95°F) and 1 h drying at ambient temperature. (Courtesy of S.-L. Chong, DOT/FHWA)
Figure 3.Instruments and techniques for experimental micro- and nano-mechanics. (Courtesy of K. S. Kim, Brown University)