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FAILURE MODE &. Analytical technique focused at problem prevention through. EFFECTS ANALYSIS. identification of potential problems. The FMEA is a proactive tool that. (FMEA). is used pragmatically to identify potential failures and their effects, to.

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FAILURE MODE &

Analytical technique focused at problem prevention through

EFFECTS ANALYSIS

identification of potential problems. The FMEA is a proactive tool that

(FMEA)

is used pragmatically to identify potential failures and their effects, to

numerically rate the combined risk associated with severity, probability

of occurrence and detectability, and to document appropriate plans for

prevention. FMEAs can be applied to system, application, and product

design and to manufacturing and non-manufacturing processes (i.e.,

services and transactional processes).

FIRST TIME YIELD

Yield that occurs in any process step prior to any rework that may be

required to overcome process shortcomings.

FIXED EFFECTS MODEL

An experimental model where treatments are specifically selected by the

researcher. Conclusions only apply to the factor levels considered in the

analysis. Inferences are restricted to the experimental levels.

FLUCTUATIONS

Variances in data which are caused by a large number of minute

variations or differences.

FREQUENCY

The pattern or shape formed by the group of measurements in a

DISTRIBUTION

distribution based on frequency of occurrence.

GAGE ACCURACY

The average difference observed between a gage under evaluation and a

master gage when measuring the same parts over multiple readings.

GAGE LINEARITY

A measure of gage accuracy variation when evaluated over the expected

operating range.

GAGE REPEATABILITY

A measure of the variation observed when a single operator uses a gage

to measure a group of randomly ordered (but identifiable) parts on a

repetitive basis.

GAGE REPRODUCIBILITY

A measure of average variation observed between operations when

multiple operators use the same gage to measure a group of randomly

ordered (but identifiable) parts on a repetitive basis.

GAGE STABILITY

A measure of variation observed when a gage is used to measure the

same master over an extended period of time.

GREEN BELT

Six Sigma role similar in function to Black Belt, but length of training

and project scope are reduced.

HISTOGRAM

Vertical display of a population distribution in terms of frequencies; a

formal method of plotting a frequency distribution.

HOMOGENEITY OF

The variances of the data groups being contrasted are equal (as defined

VARIANCE

by a statistical test of significant difference).


VARIATION

Any quantifiable difference between individual measurements; such

differences can be classified as being due to common causes (random)

or special causes (

assignable).

VARIATION RESEARCH

Procedures, techniques, and methods used to isolate one type of

variation from another (for example, separating product variation from

test variation).

VOICE OF THE CUSTOMER

(VOC)

Data gathered from the customers that provides information about their needs and requirements.

_

A control chart which is a representation of process capability over

time; displays the variability in the process average and range across time.

X & R CHARTS


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