#TITLE_ALTERNATIVE#

• Main Author: DWI HARYADI (NIM : 131 00 064); Pembimbing : Ir Ign Pulung Nurprasetio, MSME, AGUS
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/14709
• Institution: Institut Teknologi Bandung

The main objective of this research work is to redesign and manufacture a prototype of a one degree vibration (1-DOF) test rig. With this visual aid, students will be able to get a better understanding of vibration theory. Moreover, this prototype can also be used for laboratory exercise at the Mechanical Engineering Department to support MS4100, Mechancial Engineering Laboratory I. Before creating the design, a literature study of the existing and commonly used vibration model was conducted. Based on this study a new model and several alternatives were constructed. Using Pugh method, we select the best design to be manufactured. <br /> <br /> <br /> The model was constructed by using the facilities in the machine workshop of Mechanical and Machine Construction Laboratoray. It consists of three main components, i.e., the main frame, mass, and damper. This instrument can be used to demonstrate free vibration by giving initial displacement. Forced vibration can be conducted by turning the unbalanced disc which is placed on the motor’s output shaft. After the prototype was made, we perform free and also forced vibration tests. The experiment was conducted in accordance to the Vibration Modul of the Basic Mechanical Engineering Phenomena laboratory hand out. The process of data collection was done using the available data acquisiton instrument and processed by MATLAB. <br /> <br /> <br /> The test results demonstrate that this prototype is capable of showing the free and forced vibration phenomena. However, we are not able to demonstrate resonance because the electrical motor used was not able to rotate the system at its natural frequency, which is very low. In addition, the damper that has been created was too big for the prototype. In the future, we hope to remedy the above <br /> <br /> <br /> by installing a DC servo motor and a smaller damper.