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To stress accuracy


    Accelerometer as the sensor with the conventional VSR technology development There are still only qualitative selection of process parameters, qualitative judgments process impact, but according to VSR Sigmar scientific theories relating to the principles of modal analysis technique to do, the current technology staff have to accurately predict the stress position.  If the blind VSR does not.

Sigmar through a large number of experimental studies and theoretical exploration, discovery and identification of vibration mode adaptation to the regional distribution of the stress to the stress effect of the most important factor, proposed to vibration mode analysis based on the theory of scientific VSR.  It emphasizes the vibration of the workpiece to pre-analysis, such as stress distribution, structure, shape, form and position tolerance, failure analysis, etc.; vibration analysis of the order again when the frequency of the corresponding vibration mode, find the need to let the stress can produce a bigger part of the dynamic stress of the vibration mode and its corresponding frequency, using the frequency to the aging artifacts.

 Like the left under the beam-shaped parts (a) scan was an curve in Figure (b), VSR based on scientific principles, to conduct modal analysis by the diagram (c) (d) is clearly visible: resonance frequency n1 could focus on the Elimination of A zone stress, n2 could focus on the Elimination of B, the stress.  On the contrary, in view of the prior parameters are not familiar with the workpiece, if not analytical work, stress positions, does not analyze the peak and the vibration type and the corresponding region of the relationship between the workpiece on the principles according to pre-set limitations, we would often bring false prescription, leakage timeliness, arbitrary limitation. 例: Example:
 


    Suppose the residual stress in the A zone, select the maximum amplitude while the frequency of n2 to the limitation has no effect on the A zone, that is incorrect prescription;
   Suppose the residual stress in the B area, select the frequency of the lowest frequency value n1 to aging, B, can not be achieved effect, that is false prescription;
   Suppose A, B District, have residual stress, if only select one of the peak (ie, a single peak) is always an area limitation has no effect, that is, leakage aging; because only the peak processing in order to make n1n2 pairs A, B District, are effective;
   Suppose A, B District, only one region of residual stress, both then in n2 with n1 piece will be brought to the limitation of time wasted, unnecessary motor wear and tear and noise, may also lead to weaknesses in the workpiece fatigue, that is arbitrary limitation .

     In short, due to VSR control box (the host) can only identify an curve (b); while the vibration mode can only rely on the operator to the scene to personally identify, so the blind use of automatic equipment, aging methods will inevitably lead to wrong prescription, leakage timeliness, arbitrary limitation. That is, only the operator of residual stress distribution according to the first turn, by identifying the vibration mode and then select a frequency effect was likely to be aging.

      Readers recommend that users refer to the following concepts:
 VSR to the stress, and accurate to the stress, a key component of stress analysis, to the stress effect, blind automatic, blind VSR, residual stress analysis