1、Comments, suggestions, or questions on this document should be addressed to Commander, Naval Sea Systems Command, ATTN: SEA 05B5, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to CommandStandardsnavy.mil, with the subject line “Document Comment”. Since contact
2、information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 9330 INCH-POUND MIL-PRF-23653D 05 November 2009 SUPERSEDING MIL-PRF-23653C(SHIPS) 21 September 1972 PERFORMANCE SPECIFICATION PLASTIC TI
3、LES, VIBRATION DAMPING This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers four classes of flexible, water and fuel-resistant, fire-retardant plastic tiles for damping the flexural vibration of shipboard m
4、etal structures. 1.2 Classification. The plastic tiles are of the following classes, as specified (see 6.2): Class 1 - For damping vibration of steel plates in the temperature range of 35 to 55 F (1.7 to 12.8 C). Class 2 - For damping vibration of steel plates in the temperature range of 55 to 80 F
5、(12.8 to 26.7 C). Class 2.5 - For damping vibration of steel plates in the temperature range of 60 to 95 F (15.6 to 35 C). Class 3 - For damping vibration of steel plates in the temperature range of 80 to 155 F (26.7 to 68.3 C). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this secti
6、on are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are
7、cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of th
8、is document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-5624 - Turbine Fuel, Aviation, Grades JP-4 and JP-5 MIL-A-24456 - Adhesive for Plastic Vibration-Damping
9、 Tile (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH
10、S-,-,-MIL-PRF-23653D 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solici
11、tation or contract. NAVAL SEA SYSTEMS COMMAND (NAVSEA) PUBLICATIONS S9510-AB-ATM-010 - Nuclear Powered Submarine Atmosphere Control Manual (Copies of this document are available from the Naval Logistics Library, 5450 Carlisle Pike, Mechanicsburg, PA 17055 or online at http:/nll.ahf.nmci.navy.mil). 2
12、.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN NATIONAL STANDARDS INSTITUTE ANSI S2.61 - Guide to the Mechanical M
13、ounting of Accelerometers (Copies of this document are available from American National Standards Institute, 25 W. 43rd St, 4th Floor, New York, NY 10036 or online at http:/webstore.ansi.org/). ASTM INTERNATIONAL ASTM D635 - Standard Test Method for Rate of Burning and/or Extent and Time of Burning
14、of Plastics in a Horizontal Position ASTM D2240 - Standard Test Method for Rubber Property - Durometer Hardness (Copies of these documents are available from ASTM International, 100 Barr Harbor Dr., P.O. Box C700, West Conshohocken, PA 19428-2959 or online at www.astm.org). SOCIETY FOR PROTECTIVE CO
15、ATINGS (SSPC) SSPC-SP 10 - Near-White Blast Cleaning (Copies of this document are available from SSPC Publication Sales, 40 24thStreet, 6thFloor, Pittsburgh, PA 15222-4656 or online at www.sspc.org). 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflic
16、t between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Qualification. The plastic vibration dampi
17、ng tiles furnished under this specification shall be products that are authorized by the qualifying activity for listing on the applicable qualified products list before contract award (see 4.2 and 6.3). 3.1.1 Requalification in case of reformulation. Any changes in the formulation of the vibration
18、damping tiles submitted for qualification testing shall be cause for requalification of the product. 3.2 Materials. The formulations for the tiles shall consist of the ingredients necessary to obtain the damping characteristics and physical properties described herein. 3.2.1 Toxicity. When evaluated
19、 in accordance with 4.4.9, the plastic vibration damping tiles shall have no adverse effect on the health of personnel when used for its intended purpose and shall not pose any environmental problems during waste disposal (see 4.4.9 and 6.5). 3.2.2 Off-gassing. The plastic vibration damping tiles sh
20、all be certified for, and assigned, a usage category of either “Permitted” or “Limited” in accordance with the Submarine Atmospheric Control Manual, NAVSEA S9510-AB-ATM-010 (see 4.4.10 and 6.7). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P
21、RF-23653D 3.2.3 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economicall
22、y advantageous life cycle costs. 3.3 Weight. The average weight of the tiles shall be as specified in table I (see 4.4.1 and 6.2). TABLE I. Average weight of vibration damping tiles. Nominal Thickness (Inches) Average Weight Classes 1, 2, and 3 (lb/ft) Average Weight Class 2.5 (lb/ft) 0.90.05 - 2.80
23、.1 3.10.1 4.50.2 - 3.4 Dimensions. Unless otherwise specified (see 6.2), the tiles shall be 12116 by 12116 inch in width and length. The nominal but not limiting thickness is inch for tiles having a weight of 0.9 pounds per square foot (lb/ft), inch for tiles having a weight of 2.8 or 3.1 lb/ft, and
24、 inch for tiles having a weight of 4.5 lb/ft. Tiles supplied under one contract or order from one manufacturer shall not differ in thickness by more than 116 inch except for tiles having a weight of 0.9 pounds per square foot which shall not differ in thickness by more than 1/32 inch. Tiles shall be
25、 of uniform thickness, square, and edges shall be perpendicular to faces (see 4.4.2). 3.5 Flame retardance. Tiles shall be rated at least self-extinguishing (see 4.4.3). 3.6 Fuel and water resistance. Tile weight gain shall be not greater than 0.2 percent as a result of immersion in JP-5 fuel in acc
26、ordance with MIL-DTL-5624 and shall be not greater than 0.5 percent as a result of immersion in distilled water (see 4.4.4). 3.7 Adhesion. Bond strength between the tile and the adhesive shall be equal to or greater than the cohesive strength of the tile (see 4.4.5). The average cohesive strength of
27、 the tile shall be not less than the following: Class 1 - 80 pounds per square inch (lb/in) Class 2 - 250 lb/in Class 2.5 - 250 lb/in Class 3 - 300 lb/in 3.8 Vibration damping performance. 3.8.1 Initial damping performance. Initial vibration damping performance shall be as specified in tables II, II
28、I, IV, and V, as appropriate (see 4.4.6). 3.8.2 Damping performance after oven aging. Vibration damping performance after oven aging shall be as specified in tables II, III, IV, and V, as appropriate, and individual values shall be at least 70 percent of the initial damping values (see 4.4.6). 3.9 H
29、ardness. The average hardness of the tiles shall be not greater than 10 durometer points from the values obtained on tiles submitted for qualification tests (see 4.4.7). 3.10 Permanent compressibility (class 1 only). Decrease in tile volume shall be not greater than 5 percent (see 4.4.8). 3 Provided
30、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-23653D 3.11 Identification. Two adjacent edges of each tile shall be marked with one coat of paint or lacquer to identify the class of the tile. The marking shall be at least inch wide. The paint shall
31、not become sticky due to migration of plasticizers from within the tiles (acrylic-type paints have been found satisfactory for this purpose). The identifying colors shall be as follows: Class 1 - Blue Class 2 - White Class 2.5 - Yellow Class 3 - Red TABLE II. Class 1 tiles (4.5 lb/ft), vibration dam
32、ping characteristics. Percent Critical Damping at Indicated Temperatures (Minimum) Lengthwise Flexural Mode Number Nominal Frequency at 55 F (12.8 C) of 3 40“ Covered Bar (Hertz (Hz)35 F (1.7 C) 55 F (12.8 C) 1 45 6.0 2.5 3 275 7.0 6.0 5 710 5.5 6.5 7 1330 4.0 6.0 9 2100 3.5 4.5 11 3015 2.5 4.0 13 4
33、050 2.0 3.5 TABLE III. Class 2 tiles (4.5 lb/ft), vibration damping characteristics. Percent Critical Damping at Indicated Temperatures (Minimum) Lengthwise Flexural Mode Number Nominal Frequency at 55 F (12.8 C) of 3 40“ Covered Bar (Hz)55 F (1.7 C) 75 F (12.8 C) 1 45 7.0 2.0 3 260 7.5 5.0 5 670 7.
34、0 6.5 7 1250 5.0 6.0 9 1990 4.0 5.0 11 2890 3.5 5.0 13 3830 3.0 4.5 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-23653D TABLE IV. Class 2.5 tiles (3.1 lb/ft), vibration damping characteristics. Percent Critical Damping at Indicated Tempe
35、ratures (Minimum) Lengthwise Flexural Mode Number Nominal Frequency at 75 F (12.8 C) of 3 40“ Covered Bar (Hz)75 F (23.9 C) 95 F (35.0 C) 1 45 5.4 3.0 3 260 5.8 5.3 5 670 5.2 6.5 7 1250 4.4 6.5 9 1990 3.4 6.0 11 2890 3.0 5.0 13 3830 2.8 5.0 TABLE V. Class 3 tiles (4.5 lb/ft), vibration damping chara
36、cteristics. Percent Critical Damping at Indicated Temperatures (Minimum) Lengthwise Flexural Mode Number Nominal Frequency at 115 F (46.6 C) of 3 40“ Covered Bar (Hz)95 F (35.0 C) 115 F (46.1 C) 135 F (57.2 C) 155 F (68.3 C) 1 50 6.0 5.0 2.0 - 3 305 6.0 7.0 5.0 1.0 5 770 4.5 6.0 5.5 2.0 7 1425 4.5 6
37、.0 6.0 3.0 9 2220 3.5 5.0 5.0 3.0 11 3200 3.5 5.0 5.0 3.0 13 4290 3.5 5.0 5.0 3.0 3.12 Workmanship. The tiles shall be examined for defects and workmanship. The finished tiles shall be free of segregated particles. Blisters shall not exceed a height of 116 inch. Minor surface voids and minor cracks
38、will not be cause for rejection. The surface shall be free of wax or other substances which may interfere with subsequent adhesion (see 4.3.3). 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. Qualification inspection (see
39、4.2). b. Conformance inspection (see 4.3). 4.2 Qualification inspection. Qualification inspection shall be conducted at a laboratory satisfactory to the Naval Sea Systems Command (NAVSEA). Government representatives may witness qualification inspections. Qualification tests shall consist of the exam
40、ination of 4.3.3 and the tests of 4.4. 4.2.1 Samples for qualification tests. The samples for qualification testing of Classes 1, 2, and 3 shall consist of 10 tiles, each 12 by 12 inches and weighing 4.50.2 lb/ft. The samples for qualification testing of Class 2.5 tiles shall consist of 10 tiles, ea
41、ch 12 by 12 inches and weighing 3.10.1 lb/ft. 4.3 Conformance inspection. Conformance inspection shall include the examination and tests specified in 4.3.3 and 4.3.4. Government representatives may witness conformance inspections. 5 Provided by IHSNot for ResaleNo reproduction or networking permitte
42、d without license from IHS-,-,-MIL-PRF-23653D 4.3.1 Identification of lot. For purposes of sampling, examinations, and tests for conformance, a lot shall consist of all the tiles, not exceeding 500 square feet of material, produced in one plant under essentially the same conditions, and offered for
43、delivery at one time. 4.3.2 Sampling for conformance inspection. For the examination and tests specified in 4.3.3 and 4.3.4, 10 tiles shall be selected at random from each lot of tiles furnished under the contract or order. 4.3.3 Examination. Each of the tiles selected in accordance with 4.2.1 and 4
44、.3.2, as appropriate, shall be examined for identification marking and visual defects and workmanship. 4.3.3.1 Rejection. If any of the 10 tiles in the sample are found not to be in conformance with the requirements of this specification, an additional set of 10 tiles shall be taken from the lot of
45、tiles. If any of the 10 tiles in the second sampling are found not to be in conformance with the requirements of this specification, this shall be cause for rejection of the entire lot. 4.3.4 Conformance tests. Each of the tiles selected in accordance with 4.3.2 shall be tested to determine conforma
46、nce to the following requirements: Requirement Paragraph Weight 3.3 Dimensions 3.4 Hardness 3.9 Permanent compressibility (Class 1 only) 3.10 4.3.4.1 Rejection. If any of the tiles representing a lot are found not to be in conformance with the requirements of this specification, this shall be cause
47、for rejection of the entire lot represented by the tile. 4.3.5 Recertification. To maintain qualification, each class of damping tile shall be tested for conformance to 3.8.1 every three years and to 3.2.1 and 3.8.1 each time there is a change in formulation or tile manufacturing is moved to a locat
48、ion or plant other than the location or plant at which the tiles tested for qualification were manufactured. The formulation shall be considered to have changed if there is an introduction or elimination of an ingredient, a replacement or change of an ingredient, a change in the source of supply of
49、an ingredient, or the replacement of an ingredient with an equivalent ingredient from the same manufacturer. Results shall be submitted for evaluation and approval for use as specified (see 6.4). 4.4 Test methods. 4.4.1 Weight. The weight of each of the 10 tiles in the sampling shall be measured to the nearest 0.01 pound and the 10 results avera
