ASTM E874-2004 Standard Practice for Adhesive Bonding of Aluminum Facings to Nonmetallic Honeycomb Core for Shelter Panels《保护板用非金属蜂窝状芯体铝盖面的粘合剂粘结标准规程》.pdf
《ASTM E874-2004 Standard Practice for Adhesive Bonding of Aluminum Facings to Nonmetallic Honeycomb Core for Shelter Panels《保护板用非金属蜂窝状芯体铝盖面的粘合剂粘结标准规程》.pdf》由会员分享,可在线阅读,更多相关《ASTM E874-2004 Standard Practice for Adhesive Bonding of Aluminum Facings to Nonmetallic Honeycomb Core for Shelter Panels《保护板用非金属蜂窝状芯体铝盖面的粘合剂粘结标准规程》.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E 874 04Standard Practice forAdhesive Bonding of Aluminum Facings to NonmetallicHoneycomb Core for Shelter Panels1This standard is issued under the fixed designation E 874; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisio
2、n, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This practice describ
3、es the materials, processes, andquality controls to be used in the manufacture of adhesive-bonded, aluminum-faced, nonmetallic-honeycomb-core sand-wich panels for tactical shelters.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinf
4、ormation only.1.3 This standard does not purport to address the safetyconcerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.2. Reference
5、d Documents2.1 ASTM Standards:2B 209 Specification for Aluminum and Aluminum-AlloySheet and PlateC 297/C 297M Test Method for Flatwise Tensile Strengthof Sandwich ConstructionsD 1781 Test Method for Climbing Drum Peel forAdhesivesE 864 Practice for Surface Preparation of Aluminum Alloysto be Adhesiv
6、ely Bonded in Honeycomb Shelter PanelsE 865 Specification for Structural Film Adhesives for Hon-eycomb Sandwich PanelsE 866 Specification for Corrosion-Inhibiting AdhesivePrimer for Aluminum Alloys to Be Adhesively Bonded inHoneycomb Shelter PanelsE 990 Specification for Core-Splice Adhesive for Hon
7、ey-comb Sandwich Shelter PanelsE 1091 Specification for Nonmetallic Honeycomb Core forUse in Shelter PanelsE 1826 Specification for Low Volatile Organic (VOC)Corrosion-Inhibiting Adhesive Primer for Aluminum Al-loys to Be Adhesively Bonded2.2 Military Standards:MIL-STD-105 Sampling Procedures and Ta
8、bles for Inspec-tion by Attributes3MIL-STD-907B Military Standard Engineering and DesignCriteria for Rigid Wall Shelters32.3 Federal Standards:Fed. Std. No. 209 Clean Room and Work Station Require-ments, Controlled Environment43. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 ex
9、cessive corrosion, nsurface corrosion that is notremoved by cleaning as described in Practice E 864.3.1.2 gouge, na surface defect in which material has beenremoved and that causes a decrease in strength in a highlystressed area.3.1.3 nominal pressure, nthe intended operating pressure.3.1.4 nominal
10、temperature, nthe intended operating tem-perature.3.1.5 tapping test, na nondestructive evaluation proce-dure for detecting panel delamination in which the outer skin ofthe panels is tapped with a hammer or coin.3.1.5.1 DiscussionChanges in acoustic emissions result-ing from tapping can be associate
11、d with delamination andnondelaminated sections of panel.4. Significance and Use4.1 The formation of reproducible, durable-adhesive bondsin structural units requires great care in the selection ofmaterials, the preparation of the surfaces of the parts to bebonded, and the performance of the steps in
12、the bondingprocess. Experience has shown that adhesive bonding carriedout in accordance with this practice produces relatively repro-ducible bonds.1This practice is under the jurisdiction of ASTM Committee E06 on Perfor-mance of Buildings and is the direct responsibility of Subcommittee E06.53 onMat
13、erials and Processes for Durable Ridgewall Relocatable Structures.Current edition approved Oct 1, 2004. Published October 2004. Originally in1982. Last previous edition approved in 2001 as E 874 01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service
14、at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Copies of specifications, standards, and drawings required by the manufacturerin conjunction with specific procurements, or information about appropriate sourceso
15、f these documents, should be obtained from the purchaser.4Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5098.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Facilit
16、ies5.1 Panel-Assembly-Layup AreaThe panel-assembly-lay-up area is an enclosed, environmentally controlled area thatis continuously controlled for temperature, relative humidity,and concentration of airborne particles. The environmentallycontrolled area shall be maintained at a temperature of75 6 10F
17、 (24 6 6C) and not more than 50 % relative hu-midity. The temperature and relative humidity shall be re-corded continuously. All incoming and recirculated air shall befiltered to control airborne particles. The air handling equip-ment shall provide at least five air changes per hour in theenvironmen
18、tally controlled area. The filters shall ensure thatthe particle count within the environmentally controlled areawill not exceed 200 000 particles/ft3(7 3 106particles/m3)ofsize 1 m and larger. The air pressure differential between theenvironmentally controlled area and adjacent areas shall bemonito
19、red continuously and recorded at least twice weekly.The air pressure in the environmentally controlled area shall bemaintained above that of adjacent areas by a minimum of 0.015in. H2O (3.7 Pa). The particle count shall be monitored inaccordance with Fed. Std. No. 209. The recorders shall becalibrat
20、ed every six months. The environmentally controlledarea shall be conspicuously identified at all entrances as limitedaccess. Unnecessary traffic within the environmentally con-trolled area shall not be permitted. Eating and smoking withinthe environmentally controlled area shall not be permitted and
21、the environmentally controlled area shall be so posted. Allmaterials, tools, and equipment used in the environmentallycontrolled area shall be clean, low shed, and free of lint, oil,and grease. The application of oil, grease, mold release agents,or other possible contaminants within the environmenta
22、llycontrolled area shall be prohibited. The interior, exposedsurfaces of the environmentally controlled area shall be non-shedding and easily cleaned. The floor shall be sealed andcleaned daily to minimize dust generation. No preparationssuch as insertion of foam into honeycomb core, or cleaningothe
23、r than by filtered vacuum, shall take place in the environ-mentally controlled area. No core cutting shall be allowed inthe environmentally controlled area other than that required forintegral-panel cutouts involving total thickness of the core toprecut skin openings, core repair, or minor trimming.
24、5.2 Primer Application AreaThe primer-application areashall be separated from the cleaning tanks, manufacturing area,and other areas of potential contamination. All air furnished tothis area shall be filtered, and compressed air used shall beoil-free.6. Apparatus6.1 Pressure EquipmentPressure equipm
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