1、A. E. C. M .A. STAN DARD NORME A.E,C.M.A. A.E.C.M,A. NORM prEN 6018 Issue P 1 April 1990 DITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS - TEL. 45-63-82-85 UDC : Key words : ENGLISH VERSION Aerospace series Test methods for metallic mat
2、erials Determination of density according to displacement method Srie arospatiale Mthodes dessais applicables aux matriaux mtalliques Dtermination de la densif par la mthode de dplacement Luft- und Raumfahrt Prfverfahren fr metallische Werkstoffe tJ Bestimmung der Dichte nach dem Auftriebsverfahren
3、This Aerospace Series pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de MatrieArospatialJ. It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Commission following c
4、omment by the Member countries. Subsequent to the publication of this pre-standard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard After examination and signature of the AECMA Standard
5、 Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submittedas a draft European Standard to CEN (European Committee for Standardization) for final vote. Nota - Extra copies can be supplied by B.N.A.E. - 8, rue Moreau-Vauthier - 921 00 BOULOGNE-BIL
6、LANCOURT Edition approved for publication Comments should be sent within six months AIB/TFG Chairman after the date of publication decision 88, Bd. Malesherbes 1990-04-25 A.E.C.M.A. D. BOST 75008 PARIS - FRANCE 0 aecma 1990 D 1 Scopc aiid ficld of applicafiuii This standard defiles the determitiatio
7、n of dcnsity according to displacement method for metallic iiiatcrials. B 2 Syiiibols aiid efiiii tioiis Sytiibols and dcfkitions are given bclow SYhf 130 Ls UNI-1s DBFINITXONS ml k Mass of the sample weighed in air D m2 PI; P kg Mass of the sample reduced by the mass of displacemciit liquid (weighi
8、ng the sample hi the liquid) kg/dnP Density of test liquid kg/drn3 Density of weighed sample 3 lest iiictliod 3.1 Test mediirni Test liquid: DislillcJ watcr or any other suitable liquid wliich may contain up to 0,1% wetting agent to air bubbles. 3.2 Eqiiiyiiieiit Weiglulig macliiiie with an erroriin
9、iit of 0,OOOlg. I) 3.3 Yerforinance Suspended on a thin wjrc (mahiim diameter 0,125 mm), the sample is weighed in a (inl), inunersed into the test liquid atid again iveglied (m2)l taking care hat no air bubbles adhere to the sample. Tho dcnsity of the tcst liqui (pli) is cteriihxl bc i-iieans of the aerometer and is to be chccked prior to each measurement. 3.4 Evaluation The density (p) measured in kg/dmg is calculated according to the following equation:
