1、AECMA STANDARD NORME AECMA AECMA NORM - Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX Comments should be sent within six months Electrical Domain Edition approved for publication prEN 41 99-001 Edition P 1 November
2、 2002 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION I - identification; - appearance; - marking; - surface finish; - final examination. Examination of dimensions and mass I As defined in product standard. Rapid change of temperature Salt mist Sinusoidal and random v
3、i bration Temperature cycles : 5 cycles after variations - 65 “C to 150 “C for tin plated, -65 “C to 260 “C for nickel plated bonding straps. No deviation from tensile strength listed in this standard and from max. permissible voltage drop specified in the appropriate product standard. 48 hours No d
4、eviation from max. permissible voltage drop specified in thE appropriate product standard Method A level 2 Assembly as per figure 1. Test in Y and Z axis. No sign of fracture no deviation from tensile strength listed in this standard and from max. permissible voltage drop specified in appropriate pr
5、oduct standard. _ Tensile strength (crimped connection) EN 3373-001, terminal lugs on both ends. The specimen shall not break at a value less than that specified in the product standard. W Figure 1 - Assembly Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS u
6、nder license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 6 prEN 41 99-001 : 2002 6.3 Voltage drop Voltage drop and test current of complete bonding strap assembly shall be defined in the product standard, when measured in accordance with figure 2
7、 or figure 3 at (20 f 5) OC. I 1 I 1 Bonding straps with flat braid conductor Bonding straps with round braid conductor Figure 2 Figure 3 6.4 Mechanical fatigue test Specimens shall be bonding straps assembled with a terminal at each end, the dimension between the stud holes being 250 mm centre to c
8、entre. The specimen shall be mounted on the test apparatus as shown in figure 4, the axis of the terminal lugs passing through the pivot point of the apparatus. One test cycle shall consist of one flex to 50“ upwards, return to neutral position followed by flex to 50“ downwards and then return to th
9、e neutral, starting, position. The specimen shall be flexed for the number of cycles detailed in the product standard. A visual examination and test 6.3 shall be performed after 5 O00 cycles and at intervals of 5 O00 cycles until completion of the test. Failure of the specimen is deemed to be a frac
10、ture of the specimen or when the voltage drop is above the value specified. 6.5 See figure 4. The results shall be reported Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without
11、license from IHS-,-,-Page 7 prEN 4199-001: 2002 Section BB Section AA Articulation Screw and washer UP + 50“ /Fixed part of tool Mobile part of too; Down - 500 I4 200 4 I I Top view Figure 4 - Mounting device 7 Quality assurance 7.1 General See EN 3042. 7.2 Qualification Qualification testing shall
12、be carried out at the commencement of manufacture or at recommencement if there has been a break in manufacture greater than three years or if there has been any change in components or tooling. The tests shall be carried out in the sequences listed in the tables 4 and 5 on representative types and
13、sizes of conductors and assemblies as agreed with the Mandated Body. Qualification of other types and sizes closely related to those already qualified may be obtained directly by analogy or by carrying out a reduced range of tests by agreement with the Mandated Body. Copyright Association Europeene
14、des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 8 prEN 41 99-001 : 2002 EN 3475- Designation of the test 201 Visual examination 202 Mass 203 Dimensions Details No visible deforma
15、tions, correct angle of braid See product standard. See product standard. I 301 1 Ohmic resistance per unit length I See product standard. I 51 2 Flexure endurance See product standard. 7.2.2 See table 5. Only bonding straps assembled from certified components and using certified calibrated tooling
16、shall be qualified. Table 5 Qualification of bonding strap assemblies EN 2591- I I Designation of the test I Group O Visual examination Examination of dimensions and mass Voltage drop (see 6.3) Group 1 Tensile strength (crimped connection) Group 2 Ageing of terminal lugs and in-line splices by tempe
17、rature and current cycling Tensile strength (crimped connection) Group 3 Sinusoidal and random vibration Salt mist Rapid change of temperature Endurance at temperature Visual examination Voltage drop (see 6.3) Tensile strength (crimped connection) Group 4 Salt mist Mechanical fatigue test (see 6.4)
18、Visual examination Voltage drop (see 6.3) Tensile strength (crimped connection) 101 102 - 41 7 21 8 41 7 403 307 305 30 1 1 o1 41 7 - 307 101 41 7 - - Remarks 12 specimens See product standard. See product standard. 3 specimens See product standard. 3 specimens See product standard. 3 specimens See
19、product standard. See product standard. 3 specimens See product standard. See product standard. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 9
20、prEN 41 99-001 : 2002 EN 3475- Designation of the test 201 Visual examination 203 Dimensions 301 Ohmic resistance per unit length 7.3 Maintenance of qualification The sequence of tests shall be required at a minimum of three years for equipment in production or when production is restarted in the ev
21、ent of a stoppage of greater than three yars. For braid the tests table 4 shall be carried out and for bonding straps assemblies the tests in group 3 of table 5. Details All specimens All specimens All specimens 7.4 Acceptance Tests The tests listed in tables 6 and 7 shall be carried out on each bat
22、ch or lot of material, whichever is the smaller. I o1 102 - Visual examination All specimens Examination of dimensions and mass Voltage drop (see 6.3) All specimens (Dimensions only) 1 specimen per production batch 7.4.2 See table 7. Tests for bonding strap assemblies Table 7 I I EN 2591- 1 Designat
23、ion of the test Details 8 Designation See product standard. 9 Marking See product standard. 10 Packaging Bonding straps shall be so packed as to avoid any damage. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
