1、 AEROSPACERECOMMENDEDPRACTICECOVER SHIPPING FLEXIBLE (NONREUSEABLE)Issued 1997-04ARP47321. SCOPE:This SAE Aerospace Recommended Practice (ARP) defines and establishes design, construction,and performance requirements for a flexible nonreuseable waterproof cover for shipment of aircraftengines, major
2、 components, and other military and commercial items not intended for storage;items to be removed within fourteen (14) days.2. APPLICABLE DOCUMENTS:2.1 The following documents of the issue in effect on date of invitation for bids or request for proposalform a part of this specification to the extent
3、 specified herein.2.1.1 U.S. Government Publications: Available from DODSSP, Subscription Services Desk, Building4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.FED-STD-101 Test Procedures for Packaging MaterialsFED-STD-191 Textile Test MethodsFED-STD-595 Colors2.2 Other Publications:The followi
4、ng documents form a part of this document to the extent specified herein. Unlessotherwise indicated, the issue in effect on date of invitation for bids or request for proposal shallapply.2.2.1 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA19428-2959.ASTM D 2136
5、Coated Fabrics - Low Temperature BendASTM D 1044 Abrasion Resistance - Film MaterialsReaffirmed 2005-10SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its
6、applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments
7、 and suggestions. Copyright 2005 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE.
8、 TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA) Fax: 724-776-0790 Email: custsvcsae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/ARP
9、4732 SAE ARP4732- 2 -2.2.2 Uniform Freight Classification: Available from the Uniform Classification Committee, Room1106, 22 South Riverside Plaza, Chicago, IL 60606.3. REQUIREMENTS:3.1 Materials:Materials shall conform to this document and the specifications referenced herein or as otherwisestated
10、by the procuring agency.3.1.1 Barrier Material: Barrier material used in fabrication of the covers shall conform to physicalproperties as specified in Table 1.3.1.2 Color of Cover: The color of the cover shall be as specified by the purchasing activity (see 6.2)in accordance with FED-STD-595.3.2 Cov
11、er Design and Construction:3.2.1 Design: The cover shall be designed to conform to the configuration of the equipmentspecified.3.2.2 Patterns: The patterns for the protective covers shall be taken directly from the equipment. Access to the equipment may be as stipulated in the contract.3.2.3 Fit: Pr
12、otective covers shall be generally form-fitting without obstructing the flow of air currentsand shall be sufficiently loose at extremities to relieve any strain on the closure and ease theinstallation process, as required.3.2.4 Construction: The cover shall be constructed using good commercial pract
13、ices.3.2.4.1 Closure: The design of the cover shall provide manually operated closure for the rapidinstallation/removal of the cover on/from the item. Multiple closures are permitted to expediteinstallation. Closure shall not fail during transport.3.2.4.2 Installation Instructions: Each cover shall
14、be accompanied by one set of water resistantinstructions. The instructions shall include a step-by-step procedure for closing, opening,installing, and removing the cover from the item and handling equipment for which it isdesigned. The instructions for each design shall be approved by the purchasing
15、 activity.3.2.4.3 Seams: The seams of the cover shall be the overlap type. Seams shall meet allrequirements of the barrier material when tested in accordance with 4.5.1 where applied.3.2.4.4 Draw Straps (Optional): Draw straps shall be installed on the cover to hold loose fittingmaterial close to th
16、e item. The straps shall be an integral part of the cover to preventaccidental loss of the strap assembly (see 6.2).SAE ARP4732- 3 -TABLE 1 - Physical Properties of Barrier MaterialTestProperties Requirements ParagraphFlame resistance The film will show a time of 4.5.1.1not more than 10 sAbrasion re
17、sistance - Avg .28 g 4.5.1.2loss in grams per 2000 wearcyclesCorrosiveness No corrosion 4.5.1.3Resistance to blocking Slight blocking, No delamination 4.5.1.4or ruptureResistance to fluids /1/ - No swelling, delamination, 4.5.1.5fluids tested: defined embrittlement, or otherby user activity visible
18、defectsHydrostatic resistance No puncture entirely through 4.5.1.6the material at 136 kg (300 lb)Tensile strength - 9.14 kg/cm.sq (130 psi) 4.5.1.7each directionTear strength - 178 N (40 lb) 4.5.1.8pounds force, any directionminimumLow temperature resistance -40 C (-40 F) 4.5.1.9stiffening temperatu
19、re (F)Lacquer lifting /2/ No appreciable lifting or 4.5.1.10swelling in the area ofcontrol and no exudation ofplasticizers from the filmWaterproofness No dye penetration 4.5.1.11Zero transmittance within10 minPly separation - 44.5 N (10 lb) 4.5.1.12pounds force per inch, minimum/1/ Special design co
20、nsiderations may be necessary due to the corrosive nature ofthese fluids. Long-term contact with these fluids may require special compatiblebarriers to protect the cover from physical degradation./2/ Appreciable means a change that is immediately noticeable in comparing the testspecimen with the ori
21、ginal.SAE ARP4732- 4 -3.2.4.5 Record Receptacle(s) (Optional): The cover shall incorporate a record receptacle pouch witha flap and a suitable sealing device. The receptacle shall have a minimum internal dimensionof 280 mm wide x 355 mm long (11 in wide x 14 in long) (see 6.2).3.2.4.6 Drain Device (
22、Optional): The covers shall be provided with a corrosion-resistant devicelocated at the lowest part of the cover. The device shall be capable of draining any fluidsfrom the cover (see 6.2).3.2.4.7 Hoisting (Optional): One 230 mm (9 in) sleeve for each hoisting point (see 6.2).3.2.4.8 Match-Marking (
23、Optional): The cover shall be match-marked, as required, to assure correctinstallation (see 6.2).3.2.4.9 Reinforcements (Optional): The cover shall be reinforced with a second ply of material at allsharp corners and angles. The item being covered should have protective padding installedonto sharp ed
24、ges and corners (see 6.2).3.2.4.10 Closure Tool (Optional): Each cover shall be accompanied by a closure tool designed tooperate smoothly without forcing or binding. The closure tool shall be housed in a pocketmade as an integral part of the cover and designed to preclude damage to the cover durings
25、hipment (see 6.2).3.3 Identification of Covers:Each cover shall be marked for identification, as required by the procuring activity (see 6.2).3.4 Markings:The following markings shall be printed directly on all covers with a minimum of 25.4 mm (1.0 in)letters at the locations in the size specified b
26、y the procuring activity (see 6.2):a. On opposite sides of cover:Caution: HANDLE WITH CAREDO NOT TIE DOWN OVER ENCLOSED ITEMDO NOT STACK LOAD ON ENCLOSED ITEMb. On or adjacent to the receptacle for records and installation:RECORDS AND INSTALLATION INSTRUCTIONSc. Apply forward and aft markings to app
27、ropriate section of cover:FWD-AFTSAE ARP4732- 5 -3.4 (Continued):Markings shall be in durable, legible, weather-resistant lettering, and in a color contrasting to thecolor of the cover.4. QUALITY ASSURANCE PROVISIONS:4.1 Responsible for Inspection:Unless otherwise specified in the contract or purcha
28、se order, the supplier is responsible for theperformance of all inspection requirements as specified herein. Except as otherwise specified inthe contract or order, the supplier may use his/her own or any other facilities suitable for theperformance of the inspection requirements specified herein. Th
29、e buyer reserves the right toperform any of the inspections set forth in the specification where such inspections are deemednecessary to assure supplies and services conform to prescribed requirements.4.2 Classification of Inspection:The inspection requirements specified herein are classified as fol
30、lows:a. Preproduction inspection (see 4.3)b. Quality conformance inspection (see 4.4)4.3 Preproduction Inspection Tests:The inspection tests shall be performed on one completed cover manufactured from samematerial under the same manufacturing processes that will be used for production models andshal
31、l consist of the transporting of covered item to typical destination to determine suitability. Upon completion of trial run, inspection shall be done to determine if any failure occurred.4.3.1 Preproduction Inspection Reports: After the supplier or manufacturer completes the finalinspection of the f
32、irst article, he/she shall prepare an inspection report in accordance withcontractors format.4.4 Quality Conformance Inspection:Acceptance tests shall be as specified in Table 2.SAE ARP4732- 6 -TABLE 2 - Classification of DefectsDefects Major MinorType: Not as specified XMaterial: Not as specified X
33、Color: Not as specified XWorkmanship: Not uniformly made; dirt, oil, foreign matter Xpresent, rough or sharp edges, tears, cuts, holes or cracksConstruction: Not in conformance with approved First XArticle as to sleeves, drains, closure, and dimensionsSeams: Not uniform; wrinkles, bubbles, areas of
34、Xnonadhesive or imperfectionsClosure: Not operable as specified XReceptacles/Pockets: Not provided for closure tool or Xinstallation instructions, not constructed in accordancewith First ArticleClosure Tool, when applicable: Omitted; not constructed Xin accordance with approved First ArticleFunction
35、al Markings: Not as specified; not clear and Xlegible; incorrectly locatedInstallation Instructions: Omitted; incomplete XIdentification Markings: Not as specified; omitted from Xcover and/or incorrectly locatedPackaging: Not as specified; containers not in accordance Xwith applicable specificationM
36、arking for Shipment: Not as specified XMatch-Marking: Not as determined in First Article; Xomitted; incorrectly located4.5 Test Methods:4.5.1 Barrier Material and Seam Test: The specimen shall be cut from a bolt of raw material selectedat random from the lot to be checked.4.5.1.1 Flame Resistance: T
37、he barrier material containing a typical seam shall be tested inaccordance with FED-STD-191 Method 5904.4.5.1.2 Abrasion Resistance: The barrier material shall be tested for resistance to abrasion inaccordance with ASTM D 1044.SAE ARP4732- 7 -4.5.1.3 Corrosiveness:4.5.1.3.1 Test Specimen: Two highly
38、 polished magnesium panels 50 x 100 x 1.5 mm (2 x 4 x 1/16 in)shall be thoroughly cleaned and washed with a dry cleaning solvent, then with alcohol, andallowed to dry. They shall then be individually placed in a 75 x 125-mm (3 x 5-in) (insidedimensions) pouch fabricated from barrier material. After
39、insertion of the panel, the excessair shall be exhausted from the pouch by hand and the pouch seamed.4.5.1.3.2 Procedure: The resultant assemblies shall be suspended vertically in a circulating air ovenmaintained at 71 C 1.0 C (160 F 2 F) for 48 h, after which the pouches shall beremoved and allowed
40、 to come to room temperature. In this test method, a visible change inthe surface finish, such as pitting or etching, or the formation of loose or granular particlesshall constitute corrosion. Discoloration alone shall not be considered corrosion.4.5.1.4 Resistance to Blocking: The resistance to blo
41、cking shall be tested in accordance withFED-STD-101, Method 3003, Procedure D.4.5.1.5 Fluid Resistance: The fluid resistance of barrier material shall be tested in accordance withFED-STD-101, Method 3015 using fluids defined by user activity (see 6.2). The exposuretime to synthetic fluid shall be 72
42、 h at 71 C (160 F).4.5.1.6 Hydrostatic Resistance: The hydrostatic resistance of the barrier material shall be inaccordance with FED-STD-191, Method 5512.1.4.5.1.7 Tensile Strength (Without Seam): The breaking strength of the material shall be tested inaccordance with FED-STD-191, Method 5100.4.5.1.
43、8 Tear Strength (Without Seam): The barrier material shall be tested in accordance withFED-STD-191, Method 5134.1 and shall conform to Table 1.4.5.1.9 Resistance to Low Temperature Stiffening: The ability of the plastic sheet to resist stiffeningat temperature specified in Table 1 shall be determine
44、d in accordance with ASTM D 2136.4.5.1.10 Lacquer Lifting: The lacquer lifting test shall be conducted by placing a 75 x 125-mm(3 x 5-in) sample of the barrier material over a lacquered panel of equal or largerdimensions. The material shall be covered with a flat glass plate which is then weightedwi
45、th 0.9 kg (2 lb) weight. The barrier material shall remain exposed for 14 days.4.5.1.10.1 Preparation of Test Panels: The lacquered panels shall be prepared by applying twomedium coats of the lacquer shown in Table 3 to thin carbon sheet steel. The surface ofthe sheet shall be smooth and thoroughly
46、cleaned with dry cleaning solvent, then withalcohol, and then allowed to dry, before applying lacquer.SAE ARP4732- 8 -TABLE 3Lacquer Component Part by WeightNitrocellulose, 1/2 s 16.0Dibutyl phthalate 4.0Ethyl alcohol 10.6Toluene 40.0Butyl acetate 16.0Ethyl acetate 8.6Butyl alcohol 4.84.5.1.11 Water
47、proofness:4.5.1.11.1 Test Preparation: Two 200 x 300-mm (8 x 12-in) specimens shall be tested in accordancewith 4.5.1.11.2.4.5.1.11.2 Procedure: After flexing the specimen shall be allowed to come to room temperature anddried by wiping with absorbent material. The specimen shall then be made into a
48、pouch. A quantity of shredded absorbent paper sufficient to fill pouch shall be placed insidepouch remaining, the edge sealed closed and the pouch placed into a water solutioncontaining 1% Aerosol OT and Methyl Violet for 10 min. The pouch shall then beremoved, wiped dry, and the shredded absorbent
49、paper examined for dye stains.4.5.1.12 Ply Separation: The ability of the material to resist ply separation shall meet therequirements of Table 1 and FED-STD-191, Method 5970.5. PREPARATION FOR DELIVERY:5.1 Packaging:Packages which required overpacking for acceptance by the carrier shall be packed in exteriortype shipping containers in a manner that will ensure safe transportation to the point of delivery. Containers shall meet Uniform Freight Classification Rules or regulations of other commoncarriers as applicable to mode of transportation.6. NOTES:6.1 Inten
