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Fatigue strength reduction factor (kf)
| Глоссарий терминов по технологиям неразрушающего контроля (NDT) |
The ratio of the fatigue strength of a member or specimen with no stress concentration to the fatigue strength with stress concentration. kf has no meaning unless the geometry, size and material of the member or specimen and stress range are stated.
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Concentration, английский
- The amount of a substance present in a certain amount of soil, water, air, food, blood, hair, urine, breath, or any other media.
- Concentración
- N концентрация
- Концентрация; кучность
- The area covered by the diamonds as compared with the total area of the cutting surface of a surface-set bit.
- The volume of diamonds, expressed in percent, compared to the total volume of the crown of an im pregnated bit
- The percentage of acid compared with the volume of water added to produce a dilute solution.
- Концентрация. количество вещества, выраженное в единицах массы или молярных единицах, в единице объема жидкости или единице массы твердого тела. con. dence interval
- Концентрация. количество вещества, выраженное в единицах массы или молярных единицах, в единице объема жидкости или единице массы твердого тела.
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Stress concentration factor (kt), английский
The ratio of the greatest stress, in the region of a notch or other stress raiser as determined by advanced theory, photo-elasticity or direct measurement of elastic strain, to the corresponding nominal stress.
Grid ratio (rt), английский
The ratio of the depth of the opaque strips of a grid, measured in the direction of the primary beam, to the spacing between them.
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