DYNAMIC BEHAVIOR OF FERROCEMENT PLATES | ||
| ERJ. Engineering Research Journal | ||
| Article 8, Volume 30, Issue 3, July 2007, Pages 335-343 PDF (1.01 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/erjm.2007.70075 | ||
| Authors | ||
| M. A. EL-Sissy; A. A. Hamada; Y. B. Shaeen | ||
| Production Engineering andkfechanical Design Dept . Faculty of Engineering, Minoufya University, Shebin El-Kom, Egypt | ||
| Abstract | ||
| Thin ferrocement plates reinforced with various types of expanded steel meshes were developed mth high strength, crack resistance, high ductihly and energy absorption properties whlch might be useful for dynamic applications. Five series of plates were casted and tested under four different loading condibons. The dynamic responses such as: frequency, mode shape and damping factor were extensively investigated using FFT analyw. The experimental analysis and finite element technique were utilized to study the effect of network configurations and boundruy fixations on dynamic characteristics. In additioq the investigated composite plates were tested in the high frequency range (up to120 kHA .--- , throueh ultrasonic attenuation technique. For this purpose, an experimental setup was -- c. designed and constructed to measure dynahc elastic modulus, phase velocity and damping attenuation. The effect of mesh-layer debonding on the dynamic characteristics (natural frequency and damping ratio) was investigated. Damage was detected using vibration measurements and identified by comparing signals in higher frequency ranges before and after damage. | ||
| Keywords | ||
| : Modal Testing; Finite Element; Ferrocemeut Composite; ULtrasonic Test | ||
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