1、 INCH-POUND MIL-DTL-24487B(SH) 28 January 2005 SUPERSEDING MIL-T-24487A(SHIPS) 25 May 1990 DETAIL SPECIFICATION TILE, RUBBER VIBRATION DAMPING, TYPE V This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all departments and agen
2、cies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers rubber tiles intended for damping vibrations in steel structures for shipboard use. 1.2 Classification. The rubber tiles are of the following classes, as specified (see 6.2). Class 1 - For damping vibration in steel pla
3、tes 0.5 inch (1.3 centimeters (cm) thick or less. Class 2 - For damping vibration in steel plates greater than 0.5 inch (1.3 cm) but less than 0.75 inch (1.9 cm) thick. 1.3 Part or Identifying Number (PIN). The PIN to be used for tiles acquired to this specification are created as follows: M 24487-
4、XPrefix to indicate Military specification Specification number Class number (see 1.2) 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specifi
5、cation or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they
6、are listed. Comments, suggestions, or questions on this document should be addressed to Commander, Naval Sea Systems Command, ATTN: SEA 05Q, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to commandstandardsnavsea.navy.mil, with the subject line “Document Commen
7、t“. Since contact 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 9320 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24487B
8、(SH) 2.2 Government documents. 2.2.1 Specifications, standards and handbooks. The following specifications, standards, and handbooks 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.
9、 DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-A-24456 - Adhesive for Plastic Vibration-Damping Tiles. MIL-DTL-24441/29 - Paint, Epoxy -Polyamide, Green Primer, Formula 150, Type IV. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-407 - Visual Inspection Guide for Rubber Molded Items. MIL-STD-2148 Vibration Damp
10、ing Materials, Procedures for Installation, Maintenance, and Repairs. (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch or http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)
11、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 solicitation or contract. B
12、UREAU OF MEDICINE AND SURGERY (BUMED) BUMED INST 6270.8 - Procedures for Obtaining Health Hazard Assessments Pertaining to Operational Use of a Hazardous Material. (Copies of this document are available online at https:/bumed.med.navy.mil or from Bureau of Medicine and Surgery, Department of the Nav
13、y, 2300 E Street, NW, Washington, DC 20372-5300.) NAVAL SEA SYSTEMS COMMAND (NAVSEA) S9510-AB-ATM-010 Rev 2 of 30 July 1992 - Nuclear Powered Submarine Atmosphere Control Manual. (Copies of this document are available from the Naval Sea Systems Command, Code SEA 05Z9, 1333 Isaac Hull Avenue, SE, Sto
14、p 5133, Washington Navy Yard DC 20376-5133.) 2.3 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. ASTM INTERNATIONAL ASTM B 209
15、- Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate. (DoD adopted) ASTM D 412 - Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers - Tension. (DoD adopted) ASTM D 471 - Standard Test Method for Rubber Property - Effect of Liquids. (DoD adopted) ASTM D 573 -
16、 Standard Test Method for Rubber - Deterioration in an Air Oven. (DoD adopted) ASTM D 635 - Standard Test Method for Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position. (DoD adopted) 2Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
17、ense from IHS-,-,-MIL-DTL-24487B (SH) ASTM D 792 - Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement. (DoD adopted) ASTM D 2240 - Standard Test Method for Rubber Property - Durometer Hardness. (DoD adopted) (Copies of these documents are available
18、from www.astm.org or ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) THE SOCIETY FOR PROTECTIVE COATINGS SSPC-SP 10 - Near-White Blast Cleaning (Copies of this documents are available from www.sspc.org or SSPC: The Society for Protective Coatings, 40 24thStreet, 6thFloo
19、r, Pittsburgh, PA 15222-4656) 2.4 Order of precedence. In the event of a conflict 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 h
20、as been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.2. 3.2 Rubber properties. The rubber in Class 1 and 2 tiles shall have the properties listed in Table I. Formulations of rubber compounds which
21、have been found to have these properties are given in 6.3. 3.2.1 Toxicity. When evaluated in accordance with 4.5.9, the vibration damping tiles shall have no adverse effect on the health of personnel when used for its intended purpose and shall not cause any environmental problems during waste dispo
22、sal (see 4.5.9 and 6.5). 3.2.2 Off-gassing. The vibration damping tiles shall meet the requirements in the Nuclear Powered Submarine Atmosphere Control Manual, NAVSEA Technical Manual S9510-AB-ATM-010 Rev. 2, for a usage category of Limited (see 4.5.10 and 6.6). TABLE I. Physical properties of rubbe
23、r. Properties Class 1 Class 2 Initial properties: Specific gravity Compare to first article value Compare to first article value Hardness, durometer points (See 4.5.3.1) (See 4.5.3.1) Tensile strength, lb/in2(kPa), min 960 (46.0) 1350 (64.6) Ultimate elongation, percent, min 500 500 Properties after
24、 aging in oven: Tensile strength, percent of initial, min 85 85 Ultimate elongation, percent of initial, min 70 70 Properties after immersion in water: Volume change, percent, max 15 15 Adhesion to painted steel, inches (cm) stripped per hour, max 1 (2.5) 1 (2.5) 3Provided by IHSNot for ResaleNo rep
25、roduction or networking permitted without license from IHS-,-,-MIL-DTL-24487B (SH) 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 exceed
26、s the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.3 Form. The tile shall consist of a rubber sheet having one smooth face and one cross-grooved face. The tile shall be furnished with the face or faces that will be bonded to metal roughened by
27、abrading so that, except for solvent cleaning and adhesive application, no further treatment is required. The cross-grooved face of Class 1 tile shall be roughened. Both faces of Class 2 tile shall be roughened. Abrasion of the tile faces shall break the gloss over at least 95% of the area. The numb
28、er and size of cross-grooves shall be such that a tile shall easily conform to a curved surface with no wrinkles, buckling or obvious distortions. Tiles prepared with the dimensions as shown in 6.4 have in the past allowed the tile to meet the requirements of the specification. 3.4 Dimensions. Unles
29、s otherwise specified (see 6.2), tile dimensions shall be as follows: Plan size 11.875 0.0625 inches (30.16 0.16 cm) by 11.875 0.0625 inches (30.16 0.16 cm); thickness Class 1, 0.750 0.015 inch (1.90 0.04 cm) and Class 2, 0.630 0.015 inch (1.60 0.04 cm). If tiles are ordered with plan dimensions whi
30、ch differ from those provided above, each plan dimension shall conform to the ordered size with a tolerance of plus or minus () 0.0625 inch (0.16 cm). 3.5 Weight. The weight of the Class 1 tile shall be 5.0 0.2 pounds per square foot (lb/ft2) (24.4 1.0 kilograms per square meter (kg/m2). The weight
31、of the Class 2 tile shall be 4.4 0.2 lb/ft2(21.5 1.0 kg/m2). 3.6 Flame retardance. Tiles shall be self-extinguishing. 3.7 Vibration damping characteristics. Tiles shall conform to the vibration damping characteristics specified in Table II or III, as appropriate. TABLE II. Class 1 tiles, vibration d
32、amping characteristics. Lengthwise Flexural mode number Nominal frequency at 50F (10C) of 0.5 x 3 x 26 in. (1.3 x 7.6 x 66 cm) covered bar, Hz Percent critical damping (minimum) at 50F (10C) 5 1800 4.57 3700 4.59 5750 1.5TABLE III. Class 2 tiles, vibration damping characteristics. Lengthwise Flexura
33、l mode number Nominal frequency at 50F (10C) of 0.625 x 3 x 29 in. (1.6 x 7.6 x 74 cm) covered bar, Hz Percent critical damping (minimum) at 50F (10C) 5 1850 2.07 3330 3.09 6650 1.03.8 Identification. Each tile shall be legibly and permanently marked with the contractors name or trademark, the month
34、 and year of manufacture, the contract number and the specification number. In addition, 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 0.250 inch (0.64 cm) wide. The identifying colors shall be as fo
35、llows: Class 1 - green Class 2 - orange 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24487B (SH) 3.9 Workmanship. Tiles shall be uniform in quality and condition, having no defects that will affect their installation and use. 4. VERIFICAT
36、ION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.2) b. Conformance inspection (see 4.3) 4.1.1 Inspection conditions. Unless otherwise specified (see 6.2), all inspections shall be performed in accordance
37、 with the test conditions specified herein. 4.2 First article inspection. First article inspection shall consist of the examination and tests specified in Table IV (see 6.3). Government representatives may witness qualification inspections. 4.2.1 Specimens required. The following specimens shall be
38、provided for the first article inspection: a. Ten tiles, each 11.875 inches (30.2 cm) square, or as specified (see 6.2) b. Three sheets of the rubber compound, each 6 by 6 by 0.080 0.010 inches (15 by 15 by 0.20 0.025 cm). The sheets shall be made from the same rubber compound as the test tiles and
39、have an equivalent cure. The specific gravity and hardness of the specimen tiles shall establish the reference values for conformance inspections (see 4.5.2.1 and 4.5.3.1). These tiles shall have no major or minor defects (see 4.4). TABLE IV. First article inspection. Examinations, measurements, and
40、 tests Specimens required Requirements Test Performed on tiles: Specific gravity 5 tiles 3.2 4.5.2 Hardness 5 tiles 3.2 4.5.3Adhesion 1 tile 3.2 4.5.7Form 1 tile 3.3 4.4.1.3Dimensions 5 tiles 3.4 4.4.1 Weight 1 tile 3.5 4.4.2 Flame retardance 1 tile 3.6 4.5.5 Vibration damping 3 tiles 3.7 4.5.8 Iden
41、tification - 3.8 4.4Performed on rubber sheets: Initial tensile strength and ultimate elongation 1 rubber sheet 3.2 4.5.4.1 Tensile strength and ultimate elongation after oven aging 1 rubber sheet 3.2 4.5.4.2 Volume change after water immersion 1 rubber sheet 3.2 4.5.6 4.3 Conformance inspection. Co
42、nformance inspection shall consist of the examination and test specified in Table V. Government representatives may witness conformance inspections. 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24487B (SH) TABLE V. Conformance inspection.
43、 Examinations, measurements, and tests Specimens selection Requirement Test Performed on tiles: Specific gravity Note 2 3.2 4.5.2 Hardness Note 1 3.2 4.5.3Adhesion Note 2 3.2 4.5.7Thickness Note 2 3.4 4.4.1Weight Note 1 3.5 4.4.2Identification Note 1 3.8 4.4 Workmanship Note 1 3.9 4.4Performed on ru
44、bber sheets: Initial tensile strength and ultimate elongation 1 rubber sheet 3.2 4.5.4.1 1All tiles selected at random from the lot as specified in Table VI shall be used for this inspection. 2One tile selected at random from the sampling specified in Table VI shall be used for this inspection. 4.3.
45、1 Lot. A lot shall consist of all the tiles offered for delivery at one time. In each case the number of tiles shall be the lot size. 4.3.2 Sampling for non-destructive inspection. Random samples of tiles shall be selected in accordance with Table VI from each lot for non-destructive inspection. TAB
46、LE VI. Sampling for non-destructive inspection. Lot size number of tiles Sample size number of tiles 1 to 4 All 5 to 9 5 10 to 25 8 26 to 62 13 63 to 160 20 161 to 410 32 411 to 1,000 50 1,001 to 2,600 80 4.3.3 Sampling for destructive inspection. The following specimens shall be provided for destru
47、ctive inspection. This inspection need not be performed if the lot is rejected on the basis of the non-destructive inspection performed in accordance with 4.4. a. One tile taken at random from those selected in accordance with 4.3.2. b. Three sheets of the rubber compound, each 6 by 6 inches (15 by
48、15 cm) by 0.080 0.010 inch (0.20 0.025 cm) thick. The rubber sheets shall have been made from the same rubber compound as the production tiles and have an equivalent cure. 4.4 Non-destructive inspection. Each of the tiles furnished in accordance with 4.3.1 or selected in accordance with 4.3.2 shall
49、be examined to determine major and minor defects. Identification of visible defects shall be in accordance with MIL-STD-407. The dimension, weight, and hardness of each tile shall be determined as specified in 4.4.1, 4.4.2, and 4.5.3, respectively. Defective tiles shall not be offered for delivery. The tiles shall conform to the applicable requirements in section 3. Defects in tiles found by non-destructive
