Quality

The manner by which a failure is observed; it generally decribes the way the failure occurs. Or Are any errors or defects in a process design, or item, especially those that affect the customer, and can be potential or actual.

With sufficient investigation , a specific cause, such as abnormal raw material or incorrect set-up parameters can be found for special cause variations.

Consists of the variation inherent in the process as it is designed. May include variations in temperature, properties of raw materials, strength of an electrical current etc.

Play an important part in the choice of an action against failure modes. -They are threshold values in the evaluation of these actions. -RPN can be easily calculated by multiplying the severity, occurrence and detectability.

The consequences of a failure mode. It considers the worst potential consequence of a failure, determined by the degree of injury, property damage, or system damage that could ultimately occur.

Process capability studies distinguish between conformance to control limits and conformance to specification limits (also called tolerance limits ) -if the process mean is in control then virtually all points will remain within control limits - staying within control limits does not necessarily mean that - specification limits are satisfied specification limits are usually dictated by customers

Process that is observed across time is known as a dynamic process. An SPC chart for a dynamic process time ne - seriesor a longitudinal SPC chart.

Process that is observed at a particular point in time is known as a static process . An SPC chart for a static process is often referred to as a cross sectional ' SPC chart.

Designed experiments are critical -only means of objectively quantifying the relative importance of the many potential causes of variation .

Refers to studying the consequences of those failures.

Either averages of subgroup measurements or individual measurements plotted on the x / y axis and joined by a line. Time is always on the x-axis .

A tool included in statistic process…..

Is a procedure in product development and operations management for analysis of potential failure modes within a system for classifications by the severity and likelihood of failures.

Is the application of Statistical Methods to monitor and control a process to ensure that it operates at its full potential to produce conforming product. OR an analytical decision making tool which allows you to see when a process is working correctly and when it is not.