Reference no: EM132457636
Control Concepts and Methods
Discussion Question 1: Provide 1 example of an open-loop system and 1 example of a closed-loop system.
Discussion Question 2: Given an unstable pattern of variation, describe the relationship of control limits, Type 1 errors, and Type 2 errors.
Discussion Question 3: Given the following: n = 10 samples, = 0.30 inches and the process range of = 0.0025 inches. What are the control limits of the - chart and - chart?
Design for Reliability
Discussion Question 1: From a design perspective, define reliability, and describe its major characteristics.
Discussion Question 2: A system consists of four subsystems connected in series. Determine the overall system reliability. Each subsystem has the following reliabilities:
- Subsystem A= 0.95
- Subsystem B = 0.80
- Subsystem C = 0.85
- Subsystem D = 0.90
Discussion Question 3: Assume that a system has operational redundancy with three subsystems connected in parallel. Determine the overall system reliability. Each subsystem has the following reliabilities:
- Subsystem A = 0.95
- Subsystem B = 0.80
- Subsystem C = 0.90
Discussion Question 4: A system has five subsystems with the following Mean-Time Between Failures (MTBF). The five systems are connected in series. Determine the probability of survival for an operating period of 500 hours:
- MTBF of Subsystem A= 5,270 hours
- MTBF of Subsystem B = 8,110 hours
- MTBF of Subsystem C = 4,750 hours
- MTBF of Subsystem D = 6,050 hours
- MTBF of Subsystem E = 1,800 hours