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Does drilling depth provide useful information about roughness given that spindle speed and feed rate remain in the model?

Does drilling depth provide useful information about roughness given that spindle speed and feed rate remain in the model?

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Does drilling depth provide useful information about roughness given that spindle speed and feed rate remain in the model? 

The article "Optimization of Surface Roughness in Drilling Using Vegetable- Based Cutting Oils Developed from Sunflower Oil" (Industrial Lubrication and Tribology, 2011: 271-276) gave the following data on ₁ = spindle speed (rpm), T₂ = feed rate (mm/rev), z3 = drilling depth (mm), and y = surface roughness (μm) when a semisynthetic cutting fluid was used: IL 320 320 320 420 420 420 520 520 520 22 .10 .12 .14 .10 .12 .14 .10 .12 .14 13 15 20 25 20 25 15 25 15 20 y 2.27 4.14 4.69 1.92 2.63 4.34 2.03 2.34 2.67 -1.32 1.08 0.26 -0.40 -0.79 0.99 1.64 0.03 -1.52
Transcribed Image Text:The article "Optimization of Surface Roughness in Drilling Using Vegetable- Based Cutting Oils Developed from Sunflower Oil" (Industrial Lubrication and Tribology, 2011: 271-276) gave the following data on ₁ = spindle speed (rpm), T₂ = feed rate (mm/rev), z3 = drilling depth (mm), and y = surface roughness (μm) when a semisynthetic cutting fluid was used: IL 320 320 320 420 420 420 520 520 520 22 .10 .12 .14 .10 .12 .14 .10 .12 .14 13 15 20 25 20 25 15 25 15 20 y 2.27 4.14 4.69 1.92 2.63 4.34 2.03 2.34 2.67 -1.32 1.08 0.26 -0.40 -0.79 0.99 1.64 0.03 -1.52
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