Abstract
Few mature techniques to estimate the damage mechanics of cement mortar are available A new method of damage evolution prediction and model of cement mortar based on acoustic emission is given. To depict damage evolution of cement mortar, rate process analysis and acoustic emission signal amplitude versus hits correlation figure analysis are proposed. The results show the two methods can predict effectively its damage evolution and damage degree. Based on the experimental results, damage factors were defined as the variation value of acoustic emission energy, and the equation of damage evolution and the constitutive equations presented by acoustic emission parameters are derived. The evolution equation can be uses to make dynamic assessment and estimation of damage degrees, which is useful for the study of the quantitative measurement structural damage factors.
| Original language | English |
|---|---|
| Article number | 49 |
| Pages (from-to) | 267-272 |
| Number of pages | 6 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5851 |
| DOIs | |
| State | Published - 2005 |
| Externally published | Yes |
| Event | Fundamental Problems of Optoelectronics and Microelectronics II - Khabarovsk, Russian Federation Duration: 13 Sep 2004 → 16 Sep 2004 |
Keywords
- Acoustic emission
- Cement mortar
- Constitutive equations
- Damage evolution
- Damage factors
- Dynamic assessment
- Exponential distribution
- Limit state
- NDE
- Quantitative measurement
- Rate process analysis
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