Research Article
Potential of Nonlinear Ultrasonic Indicators for Nondestructive Testing of Concrete
Table 1
Third order elastic constants and nonlinear parameter determined for concrete and some other materials from literature.
| | (GPa) | (GPa) | (GPa) | |
| Iron [10, 15] | −348 | −1 030 | 1 100 | −7.3 | Pyrex glass [10, 15] | 14 | 92 | 420 | 4.4 | Granite [15, 16] | −3 371 | −6 742 | −6 600 | −441 | Sandstone [15, 16] | −97 800 | −99 400 | −84 900 | −9 600 | Concrete from [17] | | | | −139 | Concrete (present) | −3 007 2.8% | −2 283 1.2% | −1 813 3.4% | −157 1.9% |
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