NASM 1312-19-1997 Fastener Test Methods, Method 19.pdf

《NASM 1312-19-1997 Fastener Test Methods, Method 19.pdf》由会员分享，可在线阅读，更多相关《NASM 1312-19-1997 Fastener Test Methods, Method 19.pdf（12页珍藏版）》请在麦多课文档分享上搜索。

1、NASM 1312-19-1997 Fastener Test Methods, Method 19_ STD.AIA/NAS NASM1312-17-ENGL 1777 0318743 0505407 h07 NASM1312-19 29 August 1997 ADOPTION NOTICE NASM 13 12- 19, “Fastener Test Methods Method 19 Fastener Sealing” was adopted on 29 August 1997 for use by the Department of Defense OD). Proposed cha

2、nges by DoD activities must be submitted to the DoD Adopting Activity: Commander, Naval Air Warfare Center Aircraft Division, Code 4141OOB120-3 Highway 547, Lakehurst, NJ 08733-5100. DoD activities may obtain copies of this standard fi-om the Standardization Document Order Desk, 700 Robbins Avenue,

3、Building 4D, Philadelphia, PA 191 1 1-5094. The private sector and other Government agencies may purchase copies fiom the Aerospace Industries Association, 1250 Eye Street W, Washington, DC 20005. NASM1312-19 Should be used instead ofMIL-STD-1312-19A, which was cancelled on 29 August 1997. Custodian

4、s: Navy - AS Air Force - 1 1 Army - AV Preparing activity: Navy - AS (Project No. 53GP-0285-19) Review Activities: Navy - AS, SH Air Force - 1 1 Army - AV, AR DLA - IS COPYRIGHT Aerospace Industries Association of America, Inc. (AIA NAS)Licensed by Information Handling ServicesSTD.AIA/NAS NASH1312-1

5、7-ENGL 1997 111 0338743 0505383 707 M NATIONAL AEROSPACE STANDARD , COPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, MC AuRlGHTS RESERVED I NASM1312-19 1, :I I i STWARD PRACTICE l i FASTENER TEST METHODS METHOD 19 FASTENER SEALTNG THE INITIAL RELEASE OF THIS DOCUMENT SUPERSEDES MIL-STD- 1

6、3 12- 19A DESIGNATION FOR THIS TEST METHOD REMAINS MIL-STD-1312-19 FSC 53GP SHEET 1 OF 10 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE WON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA WES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS. A

7、IA MAKES NO REPRESENTATION OR CLAIM RESPECTINO (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS. COPYRIGHT Aerospace Industries Association of America, Inc. (AIA NAS)Licensed by Information Handling ServicesNAT

8、IONAL AEROSPACE STANDARD COPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC ALL RIGHTS RESERVED I NASM1312-19 I FOREWORD This standard sets forth a standard test method for determining the ability of a fastener to restrict fluid (liquid or gas) leakage. I SHEET 2 APPROVAL DATE AUGUST 19

9、97 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA WES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTMG (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2)

10、 THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS. COPYRIGHT Aerospace Industries Association of America, Inc. (AIA NAS)Licensed by Information Handling ServicesNATIONAL AEROSPACE STANDARD COPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC ALL RIGHTS RESERVED NASM

11、13 1 I 1, 4 j i TABLE OF CONTENTS dl , Paragraph 1. 1.1 2. 3. 4. 4.1 4.1.1 4.2 4.2.1 4.2.2 4.2.3 4.2.3.1 4.2.4 4.2.5 5. 5.1 5.1.1 5.1.1.1 5.1.2 6. 6.1 Figure . 1. 2. 3. Table I. I 2-19 Sheet SCOPE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12、. . . . . . . . . . . . . .4 Applicability. . . . . . . . . . . . . , . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .,4 REFERENCED DOCUMENTS . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . , . . . . . . . . . ,

13、 . . . . . . . . . .4 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 GENERAL REQUIREMENTS. . . , . . . . . , . . . . . . . . . . . . . . . . . . . .

14、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Test apparatus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , .4 Pressure pot. . . . . .

15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Test specimen . . . . . . . . . . . . . ,. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16、 . . . . . . . . . . . . . . . . . . . . .4 Test plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Fastener holes . . . . . . . . . . . . .

17、 . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . .

18、 . . . . . . . . . . . . . . . . . . .4 Spacer usage . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Surface cleaning . . , . . . . . . . . . . . . . . . . . . . , . , . . . . . . . .

19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Cleaning . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . ,. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 DETAIL REQUIREMENTS Test procedures . . . . . . . . . . .

20、. . . , . . , . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Leakage test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . .5 Leakage

21、 path verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . .

22、. . . . . . . . . . . , . . . . 6 NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Test reports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23、 . . . . . . . . . . . . . . . . . . . . . . . . . .6 FIGURES 1 1 Sheet Pressure pot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .r. .:. . . . . . . . . . . . . . . . . . . .8 Test plate and spacer. . . . ,

24、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : . . . . . . . . . . . . . . . . . . . . .9 Test installation . . . . . . . 10 TABLE Sheet Hole lmts . . . . . . . . . . . . 5 *. SHEET 3 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE WON THIS DOCUMENT OR ANY AEROSPACE STANDARD I

25、S ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK

26、RIGHTS. COPYRIGHT Aerospace Industries Association of America, Inc. (AIA NAS)Licensed by Information Handling ServicesNATIONAL AEROSPACE STANDARD ,COPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC ALL RIGHTS RESERVED I NASM13 12-1 9 1.1 Arylicability. The method covers the procedures a

27、nd apparatus for determining a fasteners ability to restrict leakage of a fluid (liquid or gas) medium, under static conditions only. These fasteners are not externally or dynamically loaded,. r 2. REFERENCED DOCUMENTS Not applicable. 3. DEFINITIONS Not applicable. 4. GENERAL REQUIREMENTS 4.1 Test a

28、pparatus. 4.1.1 Pressure pot. A typical pressure pot is illustrated on Figure 1. The pressure pot shall be connected to a suitable pressure source so that the test conditions of Section 5 are accomplished. 4.2 Test specimen. 4.2.1 Test plate. The test plate to be used in conjunction with the pressur

29、e pot shall be in accordance with Figure 2; when fasteners with a diameter larger than 0.250-inch are to be tested, the number of specimens installed in each plate may be reduced. Grooved spacers which provide a leak path to the fastener shank shall be installed on the pressure side of the plate to

30、provide for different grip lengths. 4.2.2 Fastener holes. Fastener holes shall be drilled perpendicular to the test plate surface within 1 degree. When countersinking is required, the countersink shall be concentric with the hole within 0.002 FIM, and the depth shall be such that the installed faste

31、ner is flush within +0.005 or - 0.000-inch. Unless otherwise specified in the product specification, hole diameters used in the preparation of the test plate shall be in accordance with Table I. 4.2.3 Assemblv. hi, solid rivets, swaged collar fasteners, and blind fasteners shall be installed to meet

32、 the appropriate product specification requirements. Sealing type nuts shall be torqued to the minimum specified value for the particular bolt-nut combination. Unless otherwise specified, lubrication, except as part of the product specification shall not be applied, 1 4.2.3.1 Spacer usage. A spacer

33、will be used to create leak paths to the fastener shank under test. When a sealing head or shank is under test, spacers will be placed under nut and the nut side pressurized. When a sealing nut is being tested, the spacer shall be used under the head of the mating bolt, and the pressure applied from

34、 the bolt head side. For installation formed fasteners, no spacer will be required. SHEET 4 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARD

35、S. AIA MAKES NO REPRESENTATION OR CWM RESPECMNG (I) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS. COPYRIGHT Aerospace Industries Association of America, Inc. (AIA NAS)Licensed by Information Handling ServicesST

36、D*AIA/NAS NASH1312-19-ENGL 1997 03387q3 0505187 354 NATIONAL AEROSPACE STANDARD ,COPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, MC ALL RIGHTS RESERVED I NASM13 12-19 I 4.2.4 Surface &$h. ! 4.2.5 Cleaning. TABLE I. Hole limits (diameter.) NAS 618 Shank 5. DETAIL REQUIREMENTS 5.1 Test pro

37、cedures; t I .! 5.1.1 Leakage test. The test plate, Figure 2, shall be installed in the pressure pot, Figure 1 , and the upper flange secured to the lower flange face. A typical installation is shown on Figure 3. The pressure pot shall be filled with the test medium as specified in the product speci

38、fication . A fluorescent U.V. type dye shall be added to the test medium to permit detection of possible leakage. The test plate shall be cycled between the specified pressure limits. The test medium temperature shall be maintained within 20 F throughout the test. The cyclic speed shall be 25-50 cyc

39、les per minute. When a gas medium is utilized, the plate shall be covered with a liquid which will not react with the gas medium. SHEET 5 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA WES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMAN

40、CE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS. COPYRIGHT Aerospace Industries Association of America, Inc. (AIA

41、 NAS)Licensed by Information Handling ServicesNATIONAL AEROSPACE STANDARD ,COPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC ALL RIGHTS RESERVED f NASM1312-19 1. I 5.1.1.1 Leak &H verification When testing sealed nuts, pre- and post- tdk,Ieak path verification test cycles shall be perfo

42、rmed. The pre-test verification cycle shall consist of cycling the pressure pot in accordance with the product specification before hlly seating and torquing the nuts to be tested. The test medium shall be observed to leak through to the top of the test plate. After completion of the leakage test of

43、 the sealing nut under evaluation and with the pressure pot still holding the maximum test pressure, the tested nuts shall be loosened and the test medium shall again visibly leak through the top of the test plate. This will be the post-test leak path verification cycle. Safety precautions shall be

44、observed in conducting the leak path verification tests, including a cover or encasement of the pressure pot. 5.1.2 Failure. Unless otherwise specified, the test shall be conducted to the pressure designated in the product specification. Failure shall be defined as visible leakage exhibited by the p

45、resence of the liquid medium on the test plate detected by means of an ultraviolet lamp, or bubbles of the gas medium in the liquid covering the test plate. 6. NOTES 6.1 Test report. The test report shall contain the following data: a. Fastener description. 1. Part number and cage code. 2. Lot identification. 3. Material. 4. Heat treat. 5. Grip length. 6. hting part. 1 I 7. Measured fastener diameter. b. Test machine. 1. Model and serial number. 2. Calibration date. I SHEET 6 APPROVAL DATE AUGUST 1997 USE