Characterization of the Dynamic Behavior of a Cutting Fluid System
 
 

Hrishikesh A. Gowaikar | MS | 1997

In this work, a cutting fluid system is chosen and modeled with the purpose of understanding its degradation dynamics. The cutting fluid system data has been obtained from Ford Motor Company's Livonia, Michigan manufacturing facilities.The degradation of the cutting fluid system is of prime importance from the point of view of environmentally concious manufacturing. Oil concentration and pH of the cutting fluid system are taken to be two of the most important variables from a cutting fluid performance standpoint.Correspondingly, the caustic additions and the oil concentrate additions (henceforth referred to as "inputs") were also considered as these have a dirsct impact on the pH and the oil concentration of the cutting fluid system.

The mathematical tool which is used for modeling purposes is Data dependent Systems. Models have been developed for estimating the dependence of each of the system variables on the two inputs of caustic and oil, mentioned above. These mathematical models have been verified using forecasting theory and by comparing the model predicted values with the actual data obtained. Also feedback models are estimated which give the mathematical dependence of the oil and caustic additions on the system pH and oil concentration. In all, ten models are presented of which six are three series models (using three system variables) and the remaining are two series model. All models are also given in a transfer function block diagram format, giving this work some control theory flavor.

Finally, conclusions on the research findings are given along with future recommendations for future work that can be done in this area.

If you have any comments or suggestions please e-mail jwsuther@mtu.edu.