Term
| • Acoustic emission (p. 242)— |
|
Definition
| involves listening for indications of failure because almost all materials emit high frequency sounds when stressed. |
|
|
Term
| • Acoustic holography (p. 243) |
|
Definition
| computer reconstruction technique, that is time based on ultrasound reflections from within the part. |
|
|
Term
| • Computed tomography (p. 243)— |
|
Definition
| an inspection technique that provides a cross-sectional view of the interior of an object along a plane parallel to the X-ray beam. |
|
|
Term
| • Coupling medium (p. 237 |
|
Definition
| in ultrasonic inspection, because air is a poor transmitter of ultrasonic waves, this is required to link the transducer to the piece to be inspected and transmit the vibrations into the part; generally a liquid such as oil or water; |
|
|
Term
| • Critical flaw (p. 244)— |
|
Definition
| larger defects, or defects of a more undesirable geometry that may grow or propagate under the same conditions of loading, often causing sudden or catastrophic failure. |
|
|
Term
| • Destructive testing (p. 232)— |
|
Definition
| a product assessment where components or assemblies are selected and then subjected to conditions that induce failure. |
|
|
Term
|
Definition
| aim; the ability to hit the target or reach a goal. |
|
|
Term
|
Definition
| )- a chart that acts as a control indicator of a process. The range and average are plotted for each sample group and the chart is analyzed. If the chart does not have a distinct pattern or the average, range, or standard deviation fall outside a certain region, then there is a problem with the process. |
|
|
Term
| • Fishbone Diagram (p264)- |
|
Definition
| )- a diagram that shows the causes of an event. It can be used in conjunction with the control chart to root out the causes of problems. It is useful in identifying the primary obstacles that effect performance. |
|
|
Term
|
Definition
| )- a graph of a frequency distribution that shows raw data and the desired value as well as upper and lower specification limits. The width of the bars corresponds to the class intervals while the height corresponds to frequencies. |
|
|
Term
|
Definition
| (book doesn’t give definition) a value that is used as the name for an actual value which is close but not exactly the same; theoretical value?? |
|
|
Term
| • Parent Population (p254)- |
|
Definition
| the set of individuals, items, or data from which a statistical sample has been taken. |
|
|
Term
|
Definition
| repeatability; how close outcomes are to each other, not necessarily how close they are to the target outcome. |
|
|
Term
| • Process Capability (PC) (p246)- |
|
Definition
| )- the ability of a process to consistently reach the goals it is aiming for. Capability is measured through output. |
|
|
Term
| • Quality Control (QC) (p246) |
|
Definition
| the product is examined to determine whether or not the processing accomplished was what was specified by the designer in the design, usually the nominal size and tolerance. |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| • Specification Limit (p248)- |
|
Definition
| )- boundaries or parameters on a histogram that define acceptable performance for a process expressed as upper and lower limits (USL and LSL). |
|
|
Term
| • Standard Deviation (p249)- |
|
Definition
| measure of variability; =sqrt((((Xi^2))/n)-Xbar^2). |
|
|
Term
| • Statistical process control (p259 |
|
Definition
| Sampling(looking at some percentage of the whole) requires the use of statistical techniques that permit decisions about the aceptablilty of the whole based on the quality found in the sample. Know as SPC. |
|
|
Term
|
Definition
| drive for superior quality led to introduction of _________________ for improvement in products, product design, and processes. The consumer is the central focus of sttention on quality, and the methods of quality design and controls have been incorporated into all phases of production. (7 general features p256) |
|
|
Term
|
Definition
| )-(inherent uniformity) variability to which no cause can be assigned and which cannot be eliminated is said to be inherent in the process and is therefore its nature. |
|
|
