## 3 Results
### Time Consumption of the EAOVP Method Implemented in Practice  
In order to estimate the time consumption resulting from the implementation of the EAOVP method, the relevant production standards of technological times were applied [36]. So let us analyze again the process of face milling of the surface of the large workpiece on the MIKROMAT 20V portal machining center, where one pass (i.e., full milling) is performed along the examined surface (see Section 3.1). The times needed to complete the individual steps should be determined in accordance with the diagram presented earlier (Figure 1). However, it should be emphasized that the routine processing of a specific product is based on measuring equipment integrated at the implementation site and does not require taking into account the time of a previously prepared simulation program. And so, the steps are as follows:  
* Step 1--Clamping the workpiece on the machine table with tightening screws set for standard conditions (i.e., 90 Nm), and requires 1 min.
* Step 2--Performance of the Experimental Modal Analysis for identifying six natural frequencies, dimensionless damping coefficients, and accompanying vectors of normal modes of the workpiece along the desired tool path, and requires 5 min.
* Step 3--Obtaining an interpolated modal model along the workpiece according to the planned tool path, using a laptop equipped with an Intel Core i7-6700 HQ 2.60 GHz processor and 32 GB RAM (Intel, Santa Clara, CA, USA), and requires 15 min.
* Step 4--Preparing a hybrid model of the milling process based on the modal model of the machined surface does not require time. The appropriate computational model and simulation program have already been prepared.
* Step 5--Determination of the cutting process parameters \(k_{\text{{ill}}}\), \(\mu_{\text{{12}}}\), and \(\mu_{\text{{13}}}\) for further simulations, based on the assessment of the compliance of the computational model with the actual behavior of the workpiece in nominal clamping conditions (i.e., 90 Nm), and requires one actual milling (main time 3.5 min) plus one vibration measurement (5 min) and performance of max. five simulations. Using a laptop similar to step 3, each simulation takes 2.5 min for a total of \(3.5+5\times 2.5=21\) min.
* Step 6--Selecting a set of mounting conditions to consider does not require time.
* Step 7--For the four clamping conditions selected in step 6, implementing steps 1, 2, 3, and 4 and simulating the milling process with the cutting parameters specified in step 5 requires 4 x (1 min + 5 min + 15 min + 2.5 min) = 94 min.
* Step 8--Selecting the best clamping condition based on the evaluation of the RMS value of the relative tool-workpiece displacements takes only 1 min.
* Step 9--Performing the actual milling process with the best clamping conditions selected requires 3.5 min (main time of one milling pass), and the result evaluation requires 5 min.  
As a result, we obtain a total time consumption resulting from the implementation of the EAOVP method of about 150 min.  
In the case of standard machining, without implementing the EAOVP method, the full milling pass would have to be repeated six times (for each clamping condition), and the only source of knowledge would be the measurement of vibrations during each pass. Based on the  
Figure 9: The measured RMS values of vibration displacements in the surroundings of individual accelerometers during full milling of the surface for different clamping conditions.  
measuring equipment already integrated on site, the standard time consumption would be 6 \(\times\) (main time of 1 milling pass 3.5 min + clamping condition adjustment 1 min + vibration measurement 5 min) = approx. 60 min.