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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 ]
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 ...
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 ...
A defect that causes a reproducible or catastrophic malfunction. A malfunction is considered reproducible if it occurs consistently under the same circumstances. See § Systematic fault. In power systems, an unintentional short circuit, or partial short circuit, between energized conductors or between an energized conductor and ground.
In the context of software quality, defect criticality is a measure of the impact of a software defect. It is defined as the product of severity, likelihood, and class. Defects are different from user stories, and therefore the priority (severity) should be calculated as follows.
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 casting defect is an undesired irregularity in a metal casting process. Some defects can be tolerated while others can be repaired, otherwise they must be eliminated. They are broken down into five main categories: gas porosity, shrinkage defects, mould material defects, pouring metal defects, and metallurgical defects. [1]