Refer to the profile shown in Fig. 4.3 on page 144, and calculate the Ra and...

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Refer to the profile shown in Fig. 4.3 on page 144, and calculate the Ra and Rq values [um]. Note: Use the y-axis value of each point shown in the following table. Point y-axis value [um] 12.0 15.0 24.9 44.8 15.1 -0.9 -30.2 -23.9 -23.2 a b C d e f 8 h i Point j k 1 m n O р q r y-axis value [um] -53.2 -19.8 -4.2 13.7 55.1 46.1 24.8 13 -17.7 Point S t u V W X y Z a' y-axis value [um] -4.5 11.9 6.1 20.1 24.9 49.6 -5.5 -3.1 1.2 Q6. Explain why the same surface roughness values do not necessarily represent the same type of surface. Refer to the profile shown in Fig. 4.3 on page 144, and calculate the Ra and Rq values [um]. Note: Use the y-axis value of each point shown in the following table. Point y-axis value [um] 12.0 15.0 24.9 44.8 15.1 -0.9 -30.2 -23.9 -23.2 a b C d e f 8 h i Point j k 1 m n O р q r y-axis value [um] -53.2 -19.8 -4.2 13.7 55.1 46.1 24.8 13 -17.7 Point S t u V W X y Z a' y-axis value [um] -4.5 11.9 6.1 20.1 24.9 49.6 -5.5 -3.1 1.2 Q6. Explain why the same surface roughness values do not necessarily represent the same type of surface.

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