Mujiono, Mujiono and Surtono, Arif and Supriyanto, Amir (2016) Rancang Bangun Instrumentasi Uji Kualitas Beton Berdasarkan Spektrum Akustik Menggunakan Transformasi Fourier. Jurnal Teori dan Aplikasi Fisika, 4 (1). pp. 57-65. ISSN 2303-016X
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Abstract
It has been realized instrumentation of concrete quality testing by acoustic spectrum using fourier transformation. This study used a condenser as the voice-detection sensor with signal amplifier. Data were collected for 28 days with some age differences of the samples 7, 14, 21, 26 and 28 days that theoretically the best concrete quality at the maximum age of the test was 28 days. The concrete sound signal processing was done with the help of software Matlab 7.8. The study used three kinds of samples, namely samples A, B and C, with comparison amounts of cement water varrying 0.78 for sample A, 0.66 for sample B and 0.53 for sample C. Based on the theory of Young's modulus, data generated according to the theory that at the age of 26 samples and 28 days with dominant frequency 2043.52 Hz to sample A, 2033.58 Hz to sample B and 1988.9 Hz to sample C at the age of 26 days. Meanwhile, at the age of 28 days obtained dominant frequency 1950.6 Hz to sample A, 1949.7 Hz to sample B and 1946.46 Hz to sample C. Data in accordance with the theory of Young's modulus were at the age of 26 and 28 days of testing. Contemplating the dominant frequency of the three samples was not far adrift, it is necessary to do further research
| Item Type: | Article |
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| Subjects: | Q Science > QC Physics |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Fisika |
| Depositing User: | M.Si.M.Eng ARIF SURTONO |
| Date Deposited: | 02 Jun 2017 04:01 |
| Last Modified: | 02 Jun 2017 04:01 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/2601 |
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