A process that can be added to the residual stress in the surface of the workpiece. The specimens were four pieces measuring residual stress on the surface of the workpiece using X-ray diffraction, then, specimens were measured signals Barthez Hausen from the signal bar of destinations and to measure the signal. then, at room temperature By measuring the signal bar Hausen will get to evaluate changes in the frequency and the voltage right before each measurement. The voltage to be aided measurement that will be used at the 16 v and then use the 360 Hz signal after the measurement bar of destinations out there. It compares the signal bar of destinations with the residual stress measurement, the relationship developed Blythe, however
, the study found that in each point of rolling smooth stainless steel AISI 440 C after measuring stress. residue from the X-ray diffraction to have the residual stress at the surface, the greater the pressure exerted by the rolling process into a smooth surface. ค่าความต่างศักย์และค่าความถี่ที่เลือกใช้นั้นเป็นค่าที่เหมาะที่สุดเนื่องจากเป็นค่าที่ให้เกิดการเปลี่ยนแปลงของสนามแม่เหล็กที่พอกันรวมถึงสัญญาณบาร์กเฮาเซนที่ได้วัดมานั้นมีความสัมพันธ์ที่ไป the trend in the value of residual stress as well. The signals that came out even at a high residual stress, it is a sign of the destinations below. But in areas where the low residual stress, it is a sign of Hausen higher.
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