1、a - I I i I 1 1 1 I I I I I I I I I l MIL-P-225LC 93 - 9999706 0494206 b (INc“DI MILP-22581 C(SH) 23 October 1991 SUPERSEDING 16 April 1964 MIL-P-22581B(SH) MILITARY SPECIFICATION PLASTIC TILES, VIBRATION DAMPING, TYPE III This specification is approved for use by the Naval Sea Systems Command, Depa
2、rtment of the Navy, and is available for use by all departments and agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification establishes the requirements for flexible fire-resistant plastic tile for damping the flexural vibration of metal structures on ships. 2. APPLICABLE DOCUM
3、ENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications and standards form a. part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Sp
4、ecifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). I I Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 55Z
5、3, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. 1 I AMSC NIA FSC 9330 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Li
6、censed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SPECIFICATIONS FEDERAL, 0-T-620 PPP-B-636 PPP-F-320 MILITARY MIL-T-5624 MIL-L-19140 MIL-A-24456 STANDARDS FEDERAL FED-STD-3 13 MILITARY MIL-STD-105 MIL-STD-407 MIL
7、-P-225LC 93 9999906 0494207 U MIL-P-22581 C(SH) l,l,l - Trichloroethane, Technical Inhibited (Methyl Chloroform) Boxes, Shipping, Fiberboard Fiberboard; Corrugated and Solid, Sheet Stock (Container Grade), and Cut Shapes Turbine Fuel, Aviation, Grades JP-4 and JP-5 Lumber and Plywood, Fire-Retardant
8、 Treated Adhesive for Plastic Vibration-Damping Tiles Material Safety Data, Transportation Data and Hazardous Materials Furnished to Government Activities MIL-STD-2073-1 DOD Materiel Procedures for Development and Application of Packaging Requirements (Unless otherwise indicated, copies of federal a
9、nd military specifications and standards are available from the Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 191 11-5094.) 2.2 Non-Government. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the
10、issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). 2 Sampling Procedures and Tables for
11、Inspection by Attributes Visual Inspection Guide for Rubber Molded Items Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-22581C 93 9999906 0494208 T E MIL-P-22581C(SH) AMERICAN SOCIETY FOR TESTING AND MA
12、TERIALS ASTM) D 635 Standard Test Method for Rate of Burning and/or Extent and Time of Burning of Self-Supporting Plastics in a Horizontal Position; (DOD adopted) Standard Practice for Commercial Packaging; (DOD adopted) D 3951 (Application for copies should be addressed to the American Society for
13、Testing and Materials, 1916 Race Street, Philadelphia, PA 19103-1187.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents may also be available in or through libraries or other informational service
14、s.) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein (except for associated detail specifications, specification sheets or MS standards), the text of this document takes precedence. Nothing in this document, however, supersedes app
15、licable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchase order, a sample shall be subjected to first article inspection (see 4.3 and 6.3). 3.2 Material. The damping material formulation shall consist of
16、ingredients necessary to obtain the damping characteristics and physical properties described herein, except that mercury and asbestos are prohibited. The formulation of a suggested damping material is listed in table I of the appendix (see 6.2.2). 3.2.1 Toxicity. Vibration damping tiles furnished u
17、nder this specification shall not emit nauseous, irritating, or toxic volatile matter when the tile is heated to any temperature up to 212 degrees Fahrenheit (OF). The material shall have no adverse effect on the health of personnel when used for its intended purpose (see 4.6 and 6.5). Questions per
18、tinent to this effect shall be referred by the contracting activity to the Naval Medical Command (NAVMEDCOM) who will act as an advisor to the contracting agency. 3.2.2 Material safety data sheet. The contracting activity shall be provided a material safety data sheet (MSDS) at the time of contract
19、award. The MSDS is Form OSHA-20, found in and part of FED-STD-313. The MSDS shall be included with each shipment of the material covered by this specification (see 6.4). 3 Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license fr
20、om IHS-,-,-MIL-P-22581 C( SH) Lengthwise flexural mode number 3.2.3 Recovered materials. Unless otherwise specified herein, all material incorporated in the products covered by this specification shall be new and may be fabricated using materiais produced from recovered materials to the maximum exte
21、nt practicable without jeopardizing the intended use. The term “recovered materials“ means materials which have been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials. None of the above shall be interpreted to mean that th
22、e use of used products is allowed under this specification. Nominal frequency (Hz) 33 Weight. The weight of the tiles shall be 4.5 +- 0.2 pounds per square foot (see 4.5.1). 3.4 Dimensions. Unless otherwise specified (see 6.2.1), the tiles shall be 12 f 1/16 inches in width and length, and shall be
23、square in shape. The contractor shall establish a nominal thickness for the damping material based on the other requirements of this specification. This nominal thickness shall be not less than 9/16 inch, nor greater than 11/16 inch. Unless otherwise specified (see 6.2.1), tiles shall not differ fro
24、m the established nominal thickness by more than 1/16 inch (see 4.5.2). 3.5 Flame resistance. As a minimum, the material shall be rated self-extinguishing (see 4.5.3 and 6.2.2). 3.6 Fuel and water resistance. The tiles shall not experience a gain in weight of more than 2.5 percent as a result of imm
25、ersion in JP-5 fuel conforming to MIL-T-5624, or more than 7.0 percent as a result of immersion in distilled water (see 4.5.4). Loss in weight shall constitute nonconformance. 3.7 Flexibility and adhesion. The material shall exhibit no cracking on the surface nor lifting from the mandrel. In additio
26、n, the bond strength between the tile and the adhesive shall be equal to or greater than the cohesive strength of the tile. The average cohesive strength of the tile shall be not less than 80 pounds per square inch (see 4.5.5). 3.8 Vibration damping characteristics. The material shall demonstrate vi
27、bration damping characteristics as shown in table I (see 4.5.6 and 6.2.2). TABLE I. Vibration damping characteristics. 1 3 5 7 9 11 13 250 1,350 5,800 9,000 12,600 3,300 10,500 1.6 1.8 1.6 2.0 2.0. 2.0 1.9 4 : critical dampir 55 OF 1.1 1.7 1.7 1.5 3.1 5.7 6.3 0.5 1 .o 1.8 1.8 2.8 5.8 8.0 L b Q Licen
28、sed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i l i. I I I- I I I MIL-P-225LC 93 9999906 049Li2LO 8 MILP-22581 C( SH) 3.9 Uniformity. The material shall have a uniform homogeneous appearance throughout (see 4.5.7
29、). 3.10 Workmanship. The tiles shall be free of major defects (see 4.5.8). The tiles shall be square with perpendicular edges. The surfaces of the tiles shall be free of mold release agents or other substances which may interfere with their adhesion (see 4.5.5.2). 4. QUALITY ASSURANCE PROVISIONS 4.1
30、 Responsibility for inspection. Unless otherwise specified in the contract or purchase order (see 6.2), the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, the
31、contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed
32、necessary to ensure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items must meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality prog
33、ram. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing
34、 operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. a 4.2 Classification of inspections. The inspection re
35、quirements specified herein are classified as follows: a. First article inspection (see 4.3) . b. Quality conformance inspection (see 4.4). 4.2.1 Inspection conditions. Unless otherwise specified (see 6.2. i), all inspections shall be performed in accordance with the test conditions specified herein
36、. 4.3 First article inspection. First article inspection shall consist of the examinations, measurements, and tests outlined in table II. The sample used shall consist of six tiles of the material the contractor proposes to furnish. The same six tiles can be used for all first article tests (see 6.2
37、.2). 5 Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-22581C 93 = 9999906 04942LL T M MIL-P-22581C(SH) TABLE II. First article inspection. Examinations, measurements, or tests Group I Weight Dimensions
38、Workmanship Group II Fuel and water resistance Flexibility and adhesion Vibration damping Uniformity Group III Fame resistance Number of tiles required 6 6 6 1 Requirement par a g r a p h 3.3 3.4 3.10 3.6 3.7 3.8 3.9 3.5 Test paragraph 4.5.1 4.5.2 4.5.8 4.5.4 4.5.5 4.5.6 4.5.7 4.5.3 4.4 Quality conf
39、ormance inspection. Quality conformance inspection shall be as specified in table III (see 6.2.2). TABLE III. Quality conformance inspection. Examinations I Group A Weight Dimensions Workmanship Group B Fuel and water resistance, Flexibility and adhesion Uniformity Requirement paragraph 3.3 3.4 3.10
40、 3.6 3.7 3.9 Test paragraph 4.5.1 4.5.2 4.5.8 4.5.4 4.5.5 4.5.7 4.4.1 Lot. An inspection lot shall consist of tiles (not to exceed 1,) of the sme thickness, width, and length produced in one plant under the same conditions. 4.4.2 Preparation for examination, The surface of the sample tiles selected
41、as specified in 4.4.3.1 and 4.4.4.1 shall be examined to determine conformance to table III. 4.43 Group A inspection. measurements listed in table III. Group A inspection shall consist of the examinations and 6 Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or
42、networking permitted without license from IHS-,-,-MIL-P-22583C 93 9999906 0494232 3 e MIGP-22581C(SH j 4.43.1 Group A sampling. The sample plan for groupA nspection.shal1 be in accordance h MIL-STD-105 single sampling plan for normal inspection, inspection level II. The sample tiles .L shall be obta
43、ined in equal number from each shipping container. 4.43.2 Reworking of items. If items are rejected during group A inspection, the manufacturers may rework the items to correct the rejects or submit new items, Rejected items that cannot be reworked shall be destroyed. Reworked items may be resubmitt
44、ed for another group A inspection. 4 4.4.4 Group B inspection. Group B inspection shall consist of the examinations and tests in table III. P 4.4.4.1 Group B sampling. The sampling plan for group B inspection shall be in accordance with MIL-STD-105 single sampling plan for normal inspection, special
45、 inspection level S-i. Samples selected for group A inspection may be utilized for group B inspection. The same tiles shall be obtained in equal number from each shipping container. 4.5 Test procedures. 4.5.1 Weight. The weight of each tile in the sample shall be measured to the nearest 0.01 pound a
46、nd the six results averaged to determine conformance to 3.3. 4.5.2 Dimensions. Each of the tiles shall be conditioned at 75 k 9 OF for at least 16 hours. The dimensions of each tile shall be measured at 75 i. 9 OF by the following procedure to determine conformance to 3.4. The tiles shall be laid on
47、 a flat surface and measured for length and width with a steel ruler graduated in 1/64-inch units. The thickness of the tile shall be measured with a deep-throat micrometer at not less than six points evenly distributed over the area. The average of the six or more thickness readings shall be comput
48、ed and considered to be the thickness of the tile (see 3.4). 4.53 Flame resistance. Hame resistance shall be determined in accordance with ASTM D 635, except that no wire gauze shall be mounted beneath the specimen, and only three specimens shall be tested. Each of the three specimens shall be at le
49、ast self-extinguishing (see 3.5). If any of the specimens is not self-extinguishing, the procedure for test specimens which specifies tests in groups of ten shall be followed. 4.5.4 Fuel and water resistance. To determine conformance to 3.6, six specimens, each measuring 1 inch by 3 inches, shall be cut from one tile. Three samples shall be immersed in JP- 5 jet fuel in accordance with MILT-5624, and three samples shall be immersed in di
