ASTM E1417/E1417M-16 pdf free download.Standard Practice for Liquid Penetrant Testing.
1.1 This practice establishes the minimum requirements for conducting liquid penetrant examination of nonporous metal, and nonmetal components.
NOTE I —This practice replaces MI L-STD-6866.
1.2 The penetrant examination processes described in this practice are applicable to in-process, final, and maintenance (in-service) examinations. These processes are applicable for the detection of discontinuilies, such as lack of fusion, corrosion, cracks, laps, cold shuts, and porosity, that are open or connected to the surface of the component under examinaion.
1.3 Caution must he exercised in the usage of elevated temperature with components manufactured from thermoplastic materials. Also, some cleaners, penetrants, and developers can have a deleterious effect on nonmetallic materials such as plastics. Prior to examination, tests should he conducted to ensure that none of the cleaning or examination materials are harmful to the components to be examined.
1 .4 Units—The values stated in either SI units or inch- pound units are to be regarded separately as standard. The values stated in each system may not he exact equivalents; therefore, each system shall he used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
1.5 All areas of this practice may be OCfl to agreement between the cognizant engineering organization and the supplier, or specific direction from the cognizant engineering organization.
2.8 Order of Precedence—In the event of conflict between the text of this practice and the references cited herein, the text of this practice takes precedence.
3. Terminology
3. 1 Definitions:
3.1.1 The terminology relating to liquid penetrant examinalion that appears in Terminology El316 shall apply to the terms used in this practice.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 aerospace—any component that will be installed on a system that flies.
3.2.2 cognizant engineering organization (CEO)— Reference Terminology Standard El316.
3.2.3 component—the part(s) or element(s) of a system described, assembled, or processed to the extent specified by the drawing.
3.2.4 final exam inaiion—thc final exam i nation performed for the acceptance of the item. Any change to the item’s surface such as machining, grinding, welding, heat treatment, or etching by subsequent manufacturing operation. may render the previous examination invalid, requiring reexamination of all affected surfaces, unless otherwise approved in the contract.
3.2.5 in-process—that which occurs during manufacturing before a component is in final form.ASTM E1417/E1417M pdf download.