NAVY MIL-P-85585-1982 PROBES EDDY CURRENT UNSHIELDED SINGLE COIL ABSOLUTE《绝对单线圈屏蔽涡流探头》.pdf

1、MIL-P-5585 bb 77777Ob 0145557 4 P. #IL-P-85585(AS) 6 December 1982 MILITARY SPECIFICATI0,N PROBES, EDDY CURRENT, UNSHIELDED, SINGLE COIL, ABSOLUTE This specification is approved for use by the Naval Air Systems Command, Department of the Navy, and is available for use by all Depart- ments and Agenci

2、es of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers unshielded, single coil, abso-lute eddy current probes used with an eddy current flaw detector (see 6.1). 1.2 Classification. The probes covered by this specification shall be of the following types, classes and styles, a

3、s specified (see 6.2.1): 1.2.1 Type. Type 1 - Straight surface probes Type II - Angled surface probes Type III - Hole probes 1.2.2 Class. Class 1 - Probe with integral microdot female connector. Class 2 - Probe with integral microdot female connector and collar. Class 3 - Probe with 6 ft RG 174U cab

4、le and two conductor Amphenol Class 4 - Probe with 6 ft RG 174U cable and two conductor Amphenol Class 5 - Probe with 6 ft RG 174U cable and BNC nale connector. Class 6 - Probe with 6 ft RG 174U cable and BNC male connector (or equivalent) male connector. (or equivalent) male connector and collar. .

5、 and collar. 1.2.3 Style (Type III only). Style A - For 3/16 inch to 1/4 inch holes Style B - For 1/4 inch to 5/16 inch holes Style C - For 5/16 inch to 3/8 inch holes Style D - For 3/8 inch to 7/16 inch holes Beneficial comments (recommendations, additions, deletions and any pertinent data which ma

6、y be of use in improving this document should be addressed to: gineering Specifications and Standards Department (Code 93), Naval Air Engineering Center, Lakehurst, NJ 08733, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this documen

7、t or by letter. En- THIS DQUEOT cOM%AiNS PAGES. FSC 6695 Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-85585 bb W 77777Ob OL455b0 O W Style E - Style F - Style G - Style H - Style I - Style J - Style K

8、 - Style L - Style X - Style N - MIL-P- 85 5 85 (AS) Por 7/16 inch to 1/2 inch holes For 1/2 inch to 9/16 inch holes For 9/16 inch to 5/8 inch holes For 5/8 inch to 11/16 inch holes For 11/16 inch to 3/4- inch holes For 3/4 inch to 13/16 inch holes For 13/16 inch to 7/8 inch holes For 7/8 inch to 15

9、/16 inch holes For 15/16 inch to 1 inch holes For 1 inch to 1-1./16 inch holes 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, Standards, and handbooks. Unless otherwise specified, the following specifications, standards, and handbooks of the issue listed in that - issue of t

10、he Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation form a part of this specification to the extent specified herein. STANDARDS MILITARY MIL-STD-794 - Parts and Equipment, Procedures for Packaging of. (Copies of specifications, standards, handbooks,

11、drawings, and publications required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Order of precedence. In the event of a conflict between the text of this specification and the refer

12、ences cited herein, the text of this specification shall take precedence. 3. REQUIRMENTS 3.1 First article. When specified, a sample shall be subjected to first article inspection (see 4.3 and 6.3). 3.2 Component parts. .Each eddy current probe shall consist of the principle parts identified in 1.2.

13、2, assembled and purchased as a complete unit. 3.3 Design. The eddy current probes shall be designed to induce an electro- magnetic field into and detect the reflected electromagnetic field from the material or part being inspected (see 1.2.1). The design shall include tip wear prevention by incorpo

14、ration of an aluminum oxide ring bonded to the ferrite core (see Figure 1) 3.4 Identification and information plates. Pertinent probe information shall be permanently and legibly engraved, stamped or etched in the probe body or a plate attached to the probe body. The following information shall be i

15、ncluded: 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-85585 66 7777706 0345563 2 m a. Manufacturers name or identification. b. Federal stock number. c. Range of hole size (Type III only). 3.5 Performance characteristics. The performance ch

16、aracteristics of the probes shall be in accordance with Table I, when tested in accordance with 4.5.2. 3.6 Workmanship. The probes, including all accessories, shall be fabricated and finished in a workmanTlike manner and shall be free from blemishes, defects, burrs, sharp edges and incorrect dimensi

17、ons and markings. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all in- spection requirements as specified herein. contract or purchase order, the contractor may us

18、e 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 necessary to assu

19、re supplies and services conform to prescribed require- ments. Except as otherwise specified in the 4.2 Classification of inspec,tions. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3). b. Quality conformance inspection (see 4.4). 4.3 Firs

20、t article inspection. .First article inspection of the probes shall consist of all the tests and examinations of this specification. - 4.3.1 First article sample. The first article sample shall be one (1) complete unit for test. The first article sample shall be a representative production item and

21、it shall be forwarded to the Commander, Naval Air Development Center, Attention: Aircraft and Crew Systems Technology Directorate, Code 6063, Warminster, PA 18974. The sample shall be plainly identified by a securely attached durably marked tag containing the following information: FIRST ARTICLE SAM

22、PLE PROBES, EDDY CURRENT, SINGLE COIL, ABSOLUTE Type I, II or III; Class 1, 2, 3, 4, 5 or 6; Style A, By C, Dy E, F, Gy H, I, J, Ky L, M or N (as applicable) Manufacturers designation or number Name of manufacturer Part number Submitted by (name) (date) for first article inspection in accordance wit

23、h the requirements of MIL-P-85585(AS) under authorization. (reference letter authorizing test) (see 6.3). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-85585 bb M 99997Ob 0145562 4 m . 4.3.2 Manufacturers data. The manufacturer shall mainta

24、in a file consisting of all test and examination results performed by or for the supplier. shall be readily accessible to cognizant Government personnel during the contract term and for a period of three (3) years after delivery of the last item. The file 4.4 Quality conformance inspection. The qual

25、ity conformance inspection shall consist of inspection of each end item (see 4.4.2). 4.4.1 - Lot. A lot shall consist of all the probes forming a part of one con- tract or order and submitted for inspection at one time. 4.4.2 End item. Each probe shall be subjected to the applicable inspections Any

26、defect or test failure shall be cause to reject the indi- and tests of 4.5. vidual probe. 4.5 Test methods. 4.5.1 Visual inspection. Each probe shall be examined to determine conformance with Table II and other requirements of this specification. 4.5.1.1 Packaging. Each package and shipping containe

27、r shall be examined for conformance to the requirements of Section 5 and Table III. cause for rejection. Any defect shall be 4.5.2 Performance tests. -All performance tests shall be conducted within the temperature range from 16 to 27OC(6Oo to 809). 4.5.2.1 Test instrument. The test instrument shall

28、 be an ED 520 eddy current flaw detector manufactured by Magnaflux Corporation. 4.5.2.2 Test standard. The test standard shall be a 7075-T6 aluminum alloy piece, at least 1/4 inch thick with an electrical discharge machined groove mea- suring 0.040 ? 0.002 inch long, 0.020 ? 0.002 inch deep, by 0.00

29、2 ?: 0.0005 inch wide. 4.5.2.3 Probe compensation, Probe compensation shall be performed on test standard (see 4.5.2.2) as specified in 4.5.2.3.1 through 4.5.2.3.5. 4.5.2.3.1 Set the “LIFT-OFF/FREQ. and BALANCE“ controls to their zero positions (fully counterclockwise). 4.5.2.3.2 Place the probe on

30、the surface of the test standard and adjust the “BALANCE“ control so that the meter pointer is on scale. 4.5.2.3.3 If the previous step does not position the meter needle on scale, return the “BALANCE“ control to the zero position and advance the “LIFT-OFF/FREQ.“ control to a higher setting, e.g., O

31、20 on the dial. Repeat step 4.5.2.3.2. 4.5.2.3.4 Place a paper shim, 0.003 to 0.004 inch thick, (writing paper thick- ness), between the probe and the metal surface to be checked. Note the difference in the meter reading and readjust the “LIFT-OFF/FREQ.“ control (and “BALANCE“ control if necessary t

32、o keep the meter pointer on scale) until the same meter in- dication is obtained with and without the paper shim. This is most easily accon- 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-plished by noting the direction of meter needle deflection

33、when the paper shim is pulled from beneath the probe and turning the “LIFT-OFF/FREQ.“ control to deflect the pointer in the same direction. 4.5.2.3.5 Adjusting the controls as described by the previous steps will achieve the proper “lift-off“ or “intermediate layer“ compensation necessary for probe

34、performance testing. can be obtained at more than one setting of the “LIFT-OFF/FREQ.“ control. maximum sensitivity, the “LIFT-OFF/FREQ.“ control should be set at the lowest dial setting for which lift-off compensation can be achieved when following the pre- viously outlined procedure. It will genera

35、lly be found that lift-off compensation For 4.5.2.4 Test procedure. With test probe lift-off compensated as above, meter reading shall be recorded for each characteristic requirement specified in Table I. 4.5.2.4.1 Crack sensitivity, 0.0 inch probe lift-off. Place the test probe in While maintaining

36、 this alignment, scan the test probe direct contact with the test standard with the axis of the coil perpendicular to surface of the standard. across the groove and record the maximum change in meter reading. 4.5.2.4.2 Crack sensitivity, 0.010 inch probe lift-off. Repeat 4.5.2.4.1 with a 0.010 inch

37、non-conductive shim inserted between the test probe and the surface of the standard. 4.5.2.4.3 Crack sensitivity, 10 tilt. Repeat 4.5.2.4.1 with the axis of the coil tilted 10“ from the perpendicular position. 4.5.2.4.4 Lift-off noise. standard with the axis of the coil perpendicular to the surface

38、of the standard in an area away from the groove. non-conductive shim between the probe and the standard and note the meter reading. Record the maximum change in reading. Place the test probe in direct contact with the test Note the meter reading. Insert a 0.010 inch thick 4.5.2.4.5 Tilt noise. Place

39、 the test probe in direct contact with the test standard with the axis of the coil perpendicular to the surface of the standard in an area away from the groove. Tilt the test probe so that the axis of the coil is 10 from the perpendicular position and note the meter reading. Record the maximum chang

40、e in reading. Note the meter reading. 4.5.2.4.6 Edge noise. Place the test probe in direct contact with the test Record the maximum change in meter reading when the center of standard as in 4.5.2.4.1 and note the meter reading. of the standard. the coil is 0.125 inch from the edge. Move the probe to

41、ward an edge 5. PACKAGING 5.1 Preservation, packing and marking. Preservation, packing and marking shall be Level A, B or commercial in accordance with MIL-STD-794 (see 6.2.ld). 6. NOTES 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-85585-

42、66 7779906 03455611 8 W 6.1 Intended use. The eddy current probes covered by this specification are to be used with the Magnaflux Corporation model ED 520 eddy current flaw detector and are intended to be utilized by Navy fleet personnel in the maintenance in- spection of aircraft structures and com

43、ponents at Naval base activities and aboard ships. 6.2 Ordering data. 6.2.1 Acquisition requirements. Acquisition documents should specify the following: a. Title, number and date of this specification. b. Type, class and style (Type III only) required (see 1.2). c. Total quantity desired. d. Select

44、ion of.applicable level of preservation and packing (see 5.1). e. Whether first article is required (see 6.3.1). f. Items of data required (see 6.2.2). 6.2.2 Data requirements. When this specification is used in an acquisition which incorporates a DD Form 1423, Contract Data Requirements List (CDRL)

45、, the data requirements identified below shall be developed as specified by an approved Data incorporated into the contract. When the provisions of DAR 7-104.9 (n) (2) are invoked and the DD Form 1423 is not used, the data specified below shall be de- livered by the contractor in accordance with the

46、 contract or purchase order re- quirements. following paragraph: Item Description (DD Form 1664) and delivered in accordance with the approved CDRL i Deliverable data required by this specification is cited in the Paragraph no. .Data requirement Applicable DID no. 4.3.2 First article DI-T-5 329 - in

47、spection reports (Copies of data item descriptions required by contractors in connection with specified acquisition functions should be obtained from the Naval Publications and Forms Center or as directed by the contracting officer.) 6.3 First article. When a first article inspection is required, th

48、e item will The first article should consist be tested and should be a first production item. of one complete unit. The contracting officer should include specific instructions in acquisition documents regarding arrangements for examinations, test and approval of the first article. 6.3.1 First artic

49、le approval. When a first article is required for inspection and approval (see 3.1, 4.3, 6.2.le and 6.2.2), the contract should specify the following provision for first article inspection. When a contractor is in con- tinuous production of these eddy current probes from contract to contract, con- sideration should be given to waive the first article inspections. If inspection 6 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH