#TITLE_ALTERNATIVE#

• Main Author: IMAN HENDRIYANTO (NIM 231 07 306), TEGUH
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/12718
• Institution: Institut Teknologi Bandung

Several FRF error analyses on impact hammer testing have already been investigated by previous researchers. Nevertheless, only few researchers have obtained equations which is mathematically related to the influence of each error source on the errors resulted from an impact hammer testing. Unfortunately, the equations which have been obtained in the previous researches had some limitations. One of these researches, Partogi [1], succeeded to obtain an acurrate matematical model of FRF testing. However, Partogi [1] only validates the model numerically. This approach seems not to represent the real FRF testing using digital data acquisition device.<p>In this thesis, FRF testing is done by means of semi-experimental where the single degree vibration system is made and tested by using MATLAB software. The purpose of this is to achive a vibration system that can produce an acurate vibration response due to a certain exitation. During testing, there will be two vibraiton system models, A and B, used to examine the performance of the digital data acquisition device in FRF testing. The digital data acquisition device used in this thesis are MSA 35650A and PicoScope 3424. Later on, the analysis of FRF error is divided into analysis of exitation spectrum error and vibration respon spectrum error to see how the contribution of these two errors to the FRF error.<p>Based on the camparison of FRF testing predicted by Partogi [1] and resulted by using digital data acquisition device, there can be a big difference beetween these two results. Therefore, in this research will be developed a new matematical model which contains a new parameter, that is shifting time. With this new model, the resulted FRF testing can accurately predict the FRF testing done by digital data acquisition device.