penetrant


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penetrant

[′pen·ə·trənt]
(invertebrate zoology)
A large barbed nematocyst that pierces the body of the prey and injects a paralyzing agent.
(materials)
A liquid with low surface tension, usually containing a dye or fluorescent chemical; when flowed over a metal surface, it is used to determine the existence and extent of cracks and other discontinuities.
References in periodicals archive ?
The equilibrium concentration of cyclic liquid penetrant was slightly higher than that of linear liquids of the same molar mass [ILLUSTRATION FOR FIGURE 4 OMITTED].
1 Spray a generous amount of rust penetrant into each mounting hole.
These are: Chromic anodise, sulphuric anodise, penetrant NDT; aqueous degrease, chromic anodise, chromating, phosphoric anodise; hard anodise, metal bond etching, black oxide coating; cadmium plating, chromating; solvent maskant coating and chemical milling.
In this method, the thin samples were immersed in the penetrant liquid at constant temperature for a period of 10 days.
The foundry supplies a finished casting to Boeing that has been liquid penetrant inspected, 100% X-rayed in the critical areas, solution heat treated, straightened, artificially aged, black annodized and sub-assembled with bushings and nut plates.
The diffusion of penetrant and heat conduction are mathematically the same problem except that in the former there is a concentration discontinuity across an interface due to the difference in polymer solubility in each layer.
The most critical step in this penetrant process is the pre-cleaning of the casting.
Qualitatively, the methods of evaluation include visual bubble examination, visual comparison and dye penetrant inspection.
Tenders are invited for Supply of penetrant , developer and penetrant remover to bhel ivp goindwal
Atkinson also talked of using dye penetrant on a sectioned sample in order to show gas porosity much better than simply observing the piece.
The failed riser will usually appear solid at the interface of the casting surface and the riser neck, although shrinkage indications can often be found at this location by magnetic particle or dye penetrant testing.