PENGOLAHAN DATA AKUSTIK HASIL PENGUKURAN LASER INDUCED BREAKDOWN (LIBD)
MENGGUNAKAN BAHASA PEMROGRAMAN DIGITAL
ABSTRAK
Telah dilakukan pengolahan perhitungan data akustik Laser Induced Breakdown Detection (LIBD) menggunakan bahasa perograman Matlab.Programan Matlab digunakan untuk menghitung jumlah Probability Breakdown pada setiap sampel.
Proses pengambilan data dimulai dengan mengukur sampel 3ml. Jenis laser yang digunakan yaitu laser Nd-Yag dengan panjang gelombang 532nm dan frekuensi 10Hz. Material yang digunakan adalah air murni, air kran, campuran air murni dan air kran dengan volume yang berbeda dan air Polystarene. Masing – masing sampel akan berinteraksi dengan energi laser yang berbeda dan waktu yang sama. Proses interaksi dilakukan memfokuskan berkas sinar laser dengan bahan material. Proses interaksi berkas sinar laser dengan material akan menimbulkan suara dan dilakukan perekaman. Pada proses simulasi dilakukan dengan menghitung jumlah breakdown pada setiap suara yang dihasilkan.
DATA PROCESSING ACOUSTIC MEASUREMENT RESULT LASER INDUCED BREAKDOWN (LIBD)
PROGRAMMING USING DIGITAL
ABSTRAC
The calculation process of acoustic data Laser Induced Breakdown Detection (LIBD) have done with program Matlab. Program Matlab is used to calculate the amount of probability breakdown in each sample.
Proces data begin mesure sample 3ml. Type of laser that used laser Nd-YaG with a wavelength of 532 nm and frequency of 10 Hz. The material used is pure water, tap water, admixture pure water and tap water with different of volume, and polystarene. Each of sample will interac with the laser power is different and same time. Interaction process is done focused beam laser with each material. Interaction process beam laser with material will cause sound and do recorded sound. Simulated process is done calculate the amount of probability breakdown at every sound.
In the calculate process probability breakdown of data using Matlab programming laguage can be seen for pure water, combined pure water with tap water with a small energy probability breakdown has not occurred while the sample Polystarene 330, 7,5ppb, Polystarene 330, 15ppb and tap water have occurred.
