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Flaw sensitivity (rt)
| Глоссарий терминов по технологиям неразрушающего контроля (NDT) |
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Sensitivity, английский
- Change in the response of a measuring instrument divided by the corresponding change in the stimulus (1)
- The ratio of the output of an instrument to the input (i.e. -gain).
- Defines the smallest signal detectable in the presence of systems noise
- In television, a factor expressing the incident illumination upon a specified scene required to produce a specified picture signal at the output terminals of a television camera.
- For a camera usually specified in lux to provide indication of light level required to gain a full video signal from the camera.
- A measure of the amount of light required to provide a standard video signal. sensitivity values are stated in lux (see lux) or foot-candles.
- Lens iris aperture required to provide a video output signal of standard level at a specified light input. in general, sensitivity is measured using an 89.9% reflectance grey scale chart illuminated by a 3200? k illuminance at 2000 lux (color camera) or 400 lux (b/w camera), for a video output level of 100%.
- 1. the fact of being able to detect and respond to an outside stimulus 2. the rate of positive responses in a test from persons with a specific disease. a high rate of sensitivity means a low rate of people being incorrectly classed as negative. compare specificity
- Чувствительность; сенситивность; восприимчивость специфически измененная реактивность. вероятность возникновения реакции на введение антигенов. ср. susceptibility (восприимчивость (к болезни)).
- The sensitivity of classification rule is a measure of its ability to correctly classify observations into a particular category. it is defined to be the ratio of the number of true positives to the number of positives in a test set. this value is usually inversely related to the specificity of the test for a given set of data and a particular classification rule. note that this measure is different from the positive predictive value of a rule, which is a measure of the probability that a positive is a true positive. if multiple classification categories exist, each category will have its own sensitivity, specificity, and positive predictive value. see also: positive predictive value, specificity.
- Чувствительность: a) различие в концентрации аналита, соответствующее наименьшему обнару-живаемому различию в реакции метода. представляется наклоном калибровоч-ной кривой. иногда ошибочно используется для обозначения предела обнаружения. b) частота истинно положительных результатов, полученных при испытании проб, в которых, насколько известно, содержится аналит [55]. c) отношение изменения показаний измерительного прибора к соответствую-щему изменению измеряемой величины. измеряемой величиной может быть, например, количество исследуемого вещества, содержащееся в пробе.
- Чувствительность. в сенсорном анализе — способность различать, идентифицировать и/или дифференцировать (качественно и/или количественно) один или более раздражителей с помощью органов чувств (предварительный стандарт мос, 12). в аналитической химии — чувствительность метода, которая (для простого-метода)- характеризуется наклоном калибровочной кривой, т. е. является дифференциалом измеряемой величины по отношению к концентрации dx/dc. чувствительность не следует путать с наименьшим количеством или наиболее низкой концентрацией, которые можно обнаружить с помощью данного метода; правильный термин для обозначения этого понятия — предел чувствительности (см. limit of detection).
- The output of a microphone in volts for a given input in sound pressure level. sensitivity can also mean the sound pressure level (spl) a loudspeaker produces at one meter when driven with one watt of pink noise.
- The degree of confidentiality of an e-mail message or calendar item, ranging from normal to confidential.
- The significance level that must be reached before a notification is sent.
- Чувствительность:
- Measure of a sensor’s ability to detect small signals. see resolution.
- Ability of a sensor or system to distinguish a signal or indication from background noise. see also probability of detection.
- Ability of a sensor or system to distinguish a signal or indication from background noise. see also probability of detection. si (international system of units): international measurement system in which the following seven
- (1) performance characteristic of a penetrant system, of a developer, or of an entire penetrant process that provides a relative measure of the ability to detect discontinuities. (2) enumerated level of performance of a penetrant system determined by applying standardized processing procedures on reference standards with known defects. (3) ability of a sensor or system to distinguish a signal or indication from background noise. compare probability of detection.
- Probability of detection.
- Ability of signal to change with small changes of measured quantity.
Defect, английский
- One or more discontinuities that cause a testing failure in a weld.
- Crook, conk, decay, split, sweep, or other injury that decreases the amount of usable wood that can be obtained from a log (19).
- Неисправность, дефект
- Недостаток
- An undesirable blemish within the functional pattern or background of phototools
- In wood, a fault that may reduce its durability, usefulness, or strength.
- Дефект
- Дефект; неисправность; повреждение; недоработка
- Дефект, порок; недостаток о ~s 179 defect
- See light-induced defects
- A discontinuity that interferes with the usefulness of a part. a fault in any material or part detrimental to its serviceability. note that all cracks, seams, laps, etc. are not necessarily defects as they may not affect serviceability of the part in which they exist.
- Discontinuity whose size, shape, orientation, or location make it detrimental to the useful service of its host object or which exceeds the accept/reject criteria of an applicable specification. some discontinuities do not exceed an accept/reject criterion and are therefore not defects. compare crack; discontinuity; indication.
- Прерывистость, размер, форма, ориентация или расположение которой наносит ущерб полезной службе основного объекта или которая превышает критерии принятия/отклонения применимой спецификации. некоторые несплошности не выходят за рамки критерия принятия/браковки и поэтому не являются дефектами. сравнить трещины; разрывность; индикация.
- Discontinuity whose size, shape, orientation or location (1) makes it detrimental to the useful service of its host object or (2) exceeds an accept/reject criterion of an applicable specification. some discontinuities do not exceed an accept/reject criterion and are therefore not defects. compare crack; discontinuity; indication.
- Discontinuity whose size, shape, orientation or location make it detrimental to the useful service of its host object or which exceeds an accept/reject criterion of an applicable specification.1 note that some discontinuities may not affect serviceability and are therefore not defects.1 compare discontinuity and indication.1
- Discontinuity whose size, shape, orientation, or location (1) makes it detrimental to the useful service of its host object or (2) exceeds an accept/ reject criterion of an applicable specification. some discontinuities do not exceed an accept/reject criterion and are therefore not defects. compare anomaly; discontinuity; indication. see also flaw.
- Discontinuity whose size, shape, orientation or location (1) makes it detrimental to the useful service of its host object or (2) exceeds an accept/reject criterion of an applicable specification. some discontinuities do not exceed an accept/reject criterion and are therefore not defects. compare anomaly; crack; discontinuity; indication. see also flaw.
- Discontinuity whose size, shape, orientation, or location (1) makes it detrimental to the useful service of its host object or (2) exceeds an accept/ reject criterion of an applicable specification. some discontinuities do not exceed an accept/reject criterion and are therefore not defects. compare anomaly; discontinuity; indication.
- Discontinuity whose size, shape, orientation or location
- Makes it detrimental to the useful service of its host object or (2) exceeds an accept/reject criterion of an applicable specification. some discontinuities do not exceed an accept/reject criterion and are therefore not defects. compare crack; discontinuity; indication.5,6
- Discontinuity whose size, shape, orientation or location (1) makes it detrimental to the useful service of its host object or (2) exceeds an accept/reject criterion of an applicable specification.10,18 some discontinuities do not exceed an accept/reject criterion and are therefore not defects. compare crack; discontinuity; indication.10
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Flux, magnetic leakage, английский
Inherent filtration, английский
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