INDU 6331 ASSIGNMENTS ((ADVANCED QUALITY CONTROL))

6.25 Samples of n= 5 units are taken from a process every hour. The x and R values for a particular quality characteristic are determined. After 25 samples have been collected, we calculate x avg.= 20 and R= 4.56 a. What are the three sigma control limits for x and R? n= 5 Three sigma control l...

What are the three primary technical tools used for quality control and improvement? The three primary technical tools used for quality control and improvement are: 1. Statistical process control (SPC): On-line tool useful for process monitoring and reduction of variability. 2. Acceptance sampli...

A mechatronic assembly is subjected to a final functional test. Suppose that defects occur at random in these assemblies, and that defects occur according to a Poisson distribution with parameter λ= 0.02 a. What is the probability that an assembly will have exactly one defect? λ=0.02 p ( x )=...

Consider the hole diameter data. Estimate process capability using ´x and R charts. If specifications are at 0±0.01, calculate Cp, Cpk, and Cpkm. Interpret these ratios. n= 5 ´x= ∑ ´x m = (8+0+…+20+18) 20 =10,90 R´ = ∑Ri m = (80+110+…+60+50) 20 =63,50 σ^= R´ d2 ...

The data in table represent individual observations on molecular weight taken hourly from a chemical process. The target value of molecular weight is 1050 and the process standard deviation is thought to be about σ= 25. a) Set up a tabular cusum for the mean of this process. Design the cusum to...

INDU 6331 Assignment 7 Advanced Quality Control As an example considering p= 0.02, the value of Pa is Pa=P{d ≤ c }=∑ d=0 c n! d !(n−d)! p d (1−p) n−d=∑ d=0 c nCd∗p d (1−p) n−d Pa=P{d ≤2}=100C 0∗0.020 (1−0.02) 100−0 +100C1∗0.021 (1−0.02) 100−1 +...