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In quality management, a nonconformity (sometimes referred to as a non conformance or nonconformance or defect) is a deviation from a specification, a standard, or an expectation. Nonconformities or nonconformance can be classified in seriousness multiple ways, though a typical classification scheme may have three to four levels, including ...
A product defect is any characteristic of a product which hinders its usability for the purpose for which it was designed and manufactured. Product defects arise most prominently in legal contexts regarding product safety , where the term is applied to "anything that renders the product not reasonably safe". [ 1 ]
Design defects occur where the product design is inherently dangerous or useless (and hence defective) no matter how carefully manufactured. In other words, the defective product is the same as every other one on the same assembly line because it is exactly what the manufacturer designed and intended to build, but the plaintiff is contending ...
Six Sigma (6σ) is a set of techniques and tools for process improvement.It was introduced by American engineer Bill Smith while working at Motorola in 1986. [1] [2]Six Sigma strategies seek to improve manufacturing quality by identifying and removing the causes of defects and minimizing variability in manufacturing and business processes.
As the partial dislocations repel, stacking fault is created in between. By nature of stacking fault being a defect, it has higher energy than that of a perfect crystal, so acts to attract the partial dislocations together again. When this attractive force balance the repulsive force described above, the defects are in equilibrium state. [4]
One technique is to fix sample size so that there is a 50% chance of detecting a process shift of a given amount (for example, from 1% defective to 5% defective). If δ is the size of the shift to detect, then the sample size should be set to n ≥ ( 3 δ ) 2 p ¯ ( 1 − p ¯ ) {\displaystyle n\geq \left({\frac {3}{\delta }}\right)^{2}{\bar {p ...
In construction contracting, a latent defect is defined as a defect which exists at the time of acceptance but cannot be discovered by a reasonable inspection. [2]In the 1864 US case of Dermott v Jones, the latent defect lay in the soil on which a property had been built, giving rise to problems which subsequently made the house "uninhabitable and dangerous".
A Soviet Lavochkin La-7 fighter aircraft, that crash-landed in Sweden after being flown there by a defecting pilot, May 1949. In politics, a defector is a person who gives up allegiance to one state in exchange for allegiance to another, changing sides in a way which is considered illegitimate by the first state. [1]