ASTM E165-02 PDF

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They can be effectively used in the examination of nonporous, metallic materials, both ferrous and nonferrous, and of nonmetallic materials such as glazed or fully densified ceramics, certain nonporous plastics, and glass.

This technique can be used on a variety of ferrous and non-ferrous materials, including steel, stainless steel, aluminum, bronze, tungsten carbide, ceramics and plastics. Advertisement 4 Go to Page 1 2 3 4 Edit Story. For this purpose there must be a separate code or specification or a specific agreement to define the type, size, location, and direction of indications considered acceptable, and those considered unacceptable.

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A common recommendation is to use solvent and not potable water when cleaning stainless steel parts, such as turbine rotors, that will be highly stressed when in service.

Another technique involves the use of an ultraviolet light to view the surface discontinuities. Energy-Tech Magazine Contact us.

One of the most critical aspects of liquid penetrant testing is interpreting and evaluating the discontinuities. This can take minutes after the developer is applied. These inspections can increase the reliability of the part by providing early detection of flaws that could lead to a failure. Pre-clean the surfaces to be inspected. It should be pointed out, however, that after indications have been produced, they must be interpreted or classified and then evaluated.

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The reason is that some potable water sources contain chlorine, which can leave a residue on the surface and can lead to cracking in some stainless steels. Liquid penetrant testing Liquid penetrant inspection is the most popular method to check for surface cracks because it is simple and no special equipment is required.

The visible dye penetrant technique involves the following steps:. Some of the most popular NDE methods include: The developer brings the penetrating oil out of the discontinuities by a blotting action.

Work Item s – proposed revisions of this standard. Some equipment manufacturers allow some surface indications, depending on their size and location on a particular part. Then the surface must be allowed to dry.

ASTM E 02 – EspaƱol – PDF Free Download

Box Dubuque, IA Phone: It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Non-destructive examination basics Patrick J. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but d165-02 not provided as part of the standard.

In most cases, the discontinuities are visible to the naked eye aatm liquid penetrant testing. A scratch or a pore can easily be misinterpreted as a crack or flaw, and this can lead to unnecessary and costly repairs.

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Link to Active This link will always route to the current Active version of the standard. A suitable waiting time allows the penetrant to enter the surface discontinuities, and then excess penetrant can be removed.

ASTM E165(02) Espaol.pdf

Care must be taken not to overly clean and remove the penetrant from the discontinuities. An example of a gear tooth e16-02 that was made more visible using a dye penetrant examination is shown in Figure 1.

The correct term for a discontinuity is an indication, which is not necessarily a crack or a flaw. Also, there are no universal acceptance criteria on the maximum allowable size of an indication. The liquid penetrant examination just makes the discontinuities easier to see. Penetrating oils typically contain a red dye and are sprayed or brushed onto the area of the material being tested. The visible dye penetrant technique involves the following steps: The part then needs to be cleaned to remove the penetrant and the developer.

As soon as the material is dry, the developer is applied.

This method substitutes fluorescent penetrating oil for the visible dye penetrant. The surface asmt needs to be solvent cleaned to remove any greases or oils. The purpose of this article is to describe these basic NDE techniques and discuss some of the advantages and disadvantages of the different methods.