1、AECMA STANDARD NORME AECMA AECMA NORM prEN 2002-21 Edition P 2 January 2000 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 8-1 200 BRUXELLES - Tel. (+32) 2 775 81 1 O - Fax. (+32) 2 775 81 1 I ICs: Supercedes issue P 1 January 1987 Descriptors: ENGLISH VERSION
2、Aerospace series Metallic materials Test methods Part 21 : Radiographic testing of castings Srie arospatiale Matriaux mtalliques Mthodes dessais Partie 21: Examen radiographique des pices moules Luft- und Raumfahrt Metallische Werkstoffe Prfverahren Teil 21 : Rntgenographische Prfung von Gustcken Th
3、is “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA- Members. It has been technically approved by the experts of the concerned Technical Committee following com
4、ment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that inferchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard C
5、hecking Centre (NPS) and formal agreement of the Oficial Services of the Member countries it will be submitted as a draft European Standard to CEN (European Cornmittee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199. rue Jean-Jacques Rouss
6、eau - 92138 ISSY-LES-MOULINEAUX CEDEX I I Edition approved for publication I Comments should be sent within six months after the date of Dublication to 2000-01-31 AECMA Gulledelle 94 6-1200 BRUXELLES C5 Chairman Mr Evetts 0 aecma20C STD-AECMA PREN 2002-21-ENGL 2000 1012311 0037470 501 Page 2 prEN 20
7、02-21 : 2000 Contents Introduction . Scope . Normative references . Health and safety . Principle . Testing requirements . Inspection report . STD-AECMA PREN 2002-21-ENGL 2000 10L23L1 0017471 448 M Page 3 prEN 2002-21: 2000 O Introduction This standard is part of the series of EN metallic material s
8、tandards for aerospace applications. The general organization of this series is described in EN 4258. 1 Scope This standard specifies the requirements for the radiographic inspection of castings for aerospace applications. It shall be applied when referred to in the EN technical specification or mat
9、erial standard unless otherwise specified on the drawing, order or inspection schedule. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publ
10、ications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 444 EN 4
11、62-1 EN 462-2 EN 462-3 EN 584-1 EN 1330-1 EN 1330-2 EN 1330-3 EN 4179 EN 4258 EN 4259 EN 25580 ASTM El55-95 ASTM E192-95 ASTM E242-95 ASTM E446-93 ASTM El 320-95 Non-destructive testing - General principles for radiographic examination of metallic materials by X- and gamma-rays Non-destructive testi
12、ng - Image quality of radiographs - Part 1: Image quality indicators (wire type), determination of image quality value Nondestructive testing - Image quality of radiographs - Part 2: Image quality indicators (steplhole type), determination of image quality value Non-destructive testing - Image quali
13、ty of radiographs - Part 3: Image quality classes for ferrous metals Non-destructive testing - Industrial radiographic film - Classification of film systems for industrial radiography Non destructive testing - Terminology - Part 1 : List of general terms Non destructive testing - Terminology - Part
14、2: Terms common to the non-destructive testing methods Non destructive testing - Terminology - Part 3: Terms used in industrial radiographic testing Aerospace series - Qualification and approval of personnel for non-destructive testing 1) Aerospace series - Metallic materials - General organization
15、of standardization - Links between types of EN standards and their use Aerospace series - Metallic materials - Definitions of general terms 2) Non-destructive testing - Industrial radiographic illuminators - Minimum requirements Standard Reference Radiographs for inspection of Aluminium and Magnesiu
16、m Castings 3) Standard References Radiographs for Investment Steel Castings for Aerospace Applications 3) Standard Reference Radiographs for Appearances of Radiographic Images as Certain Parameters are Changed 3) Standard Reference Radiographs for Steel Castings up to 2 in (51 mm) in Thickness 3) St
17、andard Reference Radiographs for Titanium Castings 3) 1) Published as AECMA Prestandard at the date of publication of this standard 2) In preparation at the date of publication of this standard 3) Published by: American Society for Testing and Materials (ASTM), 1916 Race St., Philadelphia, PA 191 03
18、 STD-AECMA PREN 2002-21-ENGL 2000 LO3231L 0037472 384 Page 4 prEN 2002-21: 2000 3 Definitions For the purpose of this standard, the following definitions apply: 3.1 General terms See EN 4259. 3.2 Other terms See EN 1330-1, EN 1330-2 and EN 1330-3. 4 Health and safety Resources, test pieces, test sam
19、ples, test materials, test equipment and test procedures shall comply with the current health and safety regulations/laws of the countries where the test is carried out. Where equipment, materials and/or reagents which may be hazardous to health are specified, appropriate precautions in conformity w
20、ith local regulations/laws shall be taken. Particular attention shall be paid to the health and safety requirements applicable to ionising radiation (y and X-ray). 5 Principle The method requires the use of X- or gamma-radiography for flaw detection purposes, using film or real time techniques, appl
21、icable to the inspection of metallic materials. See EN 444. 6 Testing requirements 6.1 Reco u rcec The resources shall be appropriate for fixed installation or portable system used on-site. 6.1 .I Equipmenplant X-ray source(s) and Gamma-ray source) performance parameters appropriate to the material
22、thickness and geometry of components under inspection; Image quality indicators to EN 462-1 or EN 462-2; Film processing system; Film density measuring system to EN 444; Suitable viewing room with appropriate control of illumination; Viewing screen with luminance to EN 25580 and capable of masking t
23、o area of interest; For real time radiographic systems - test sample or test part: a means of remote manipulation; - electronic viewinglrecording means; - software; - image enhancement and assessment. Radiation monitors calibrated in accordance with national standards. Radiation hazard warning syste
24、m; Gamma-ray source storage facility; Building or room with suitable radiation shielding; STD.AECMA PREN 2002-23-ENGL 2000 m 3032311 0037473 210 = Page 5 prEN 2002-21: 2000 6.1.2 Materialsheagents Industrial radiographic film to EN 584-1; Film processing chemicals; Electronic recording means. 6.1.3
25、Qualification of personnel Testing to the requirements of this test method shall only be undertaken andlor supervised by NDT personnel, qualified and approved in accordance with the requirements of EN 4179. 6.2 Test samples The test sample shall be the casting ; or group of castings if specified by
26、the testing procedure. 6.3 Testing procedure All inspection shall be carried out in accordance with written instructions approved by the purchaser. The inspection procedure) covered by the written instructions shall comply with the requirements of EN 444. Additional reference samples to verify the s
27、ensitivity of the inspection may be required. The B class image quality shall be used according to EN 462-3. The geometric unsharpness shall be less than 0,15 mm. 6.4 Expression of results Flaws in the casting or group of castings and reference samples shall be verified in accordance with the requir
28、ed level of resolution. Flaws shall be classified by comparison with the reference radiographs given in ASTM E155-95, ASTM El92-95, ASTM E242-95, ASTM E446-93 or ASTM E1320-95 as applicable unless otherwise stated in the technical or material standard, drawing or order. The location of the flaws in
29、the casting or group of castings shall be marked by suitable means, e.g. on the item or by means of a sketch. 7 Inspection report All results shall be written form and the test report shall include, when relevant, at least the following information: - reference to this test method; - reference to th
30、e written instruction; - any other information relevant to the test method, (e.g. test condition, test equipment, test procedure, verification, .); - identification and traceability of the casting to be tested in accordance with the technical specification or drawing; - results; - date of inspection; - traceability to individuals performing and approving the test work; - any incident which may have affected the results; - any deviation from the test method standard.
