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    ASTM C363-2000 Standard Test Method for Delamination Strength of Honeycomb Core Materials《蜂窝状芯材的抗分离力的标准试验方法》.pdf

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    ASTM C363-2000 Standard Test Method for Delamination Strength of Honeycomb Core Materials《蜂窝状芯材的抗分离力的标准试验方法》.pdf

    1、Designation: C 363 00Standard Test Method forDelamination Strength of Honeycomb Core Materials1This standard is issued under the fixed designation C 363; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A

    2、number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of the delami-nation strength (tensile node-to-node bond strength) of honey-comb core materi

    3、als.1.2 The values stated in SI units are to be regarded as thestandard. The inch-pound units given may be approximate.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-pri

    4、ate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:E 4 Practices for Force Verification of Testing Machines23. Significance and Use3.1 The honeycomb node bond strength is a fundamentalproperty than can be

    5、used in determining whether honeycombcores can be handled during cutting, machining and formingwithout the nodes breaking. The node bond strength is thetensile load that causes failure of the honeycomb by rupture ofthe bond between the nodes. It is usually a peeling-type failure.3.2 This test method

    6、 provides a standard method of obtain-ing honeycomb core node strength data for quality control,acceptance specification testing, and research and develop-ment.4. Apparatus4.1 Test machine, capable of maintaining a controlled load-ing rate and indicating the load with an accuracy of 61%ofthe indicat

    7、ed value. The accuracy of the test machine shall beverified in accordance with Practices E 4.4.2 Grips, of multiple-pin type.4.3 Micrometer, gage, or caliper, capable of measuringaccurately to 0.025 mm (0.001 in.).5. Test Specimens5.1 The test specimens shall be 130 mm (5 in.) wide by 260mm (10 in.)

    8、 long with a test section outside the grips of 200mm (8 in.). The specimen width shall be parallel to the nodebond areas. The thickness of the core slice shall be 12 mm(0.500 in.) for nonmetallic cores and 16 mm (0.625 in.) formetallic cores.5.2 The number of test specimens and the method of theirse

    9、lection depend on the purpose of the particular test underconsideration, and no general rule can be given to cover allcases. However, when specimens are to be used for acceptancetests, at least five specimens shall be tested, and these speci-mens shall be selected from that portion of the material w

    10、hichappears to have a maximum of distorted cells or misalignmentof bond areas.6. Conditioning6.1 The test specimens may be subjected to any desiredcondition before testing. For example, immersion in boilingwater or immersion in solvents.7. Procedure7.1 Measure the specimen dimensions to the nearest

    11、0.25mm (0.01 in.).7.2 Select pins with the largest diameters that will easily fitinto the honeycomb cells.7.3 Place the pins in cell rows in the top and bottom portionsof the specimen.7.4 Fig. 1 shows a fixture that has been satisfactorily used tohold and load the pins.7.5 Load the specimen at a con

    12、stant cross-head movementof 25 mm/min. (1 in./min.).7.6 Failure of the core at the pin location is not considereda valid test. A retest shall be performed.8. Calculation8.1 Calculate the delamination strength (node-to-node bondstrength) of the core material as follows:s5Pbt(1)1This test method is un

    13、der the jurisdiction of ASTM Committee D-30 onComposite Materials and is the direct responsibility of Subcommittee D30.09 onSandwich Construction.Current edition approved Jan. 10, 2000. Published April 2000. Originallypublished as C 363 55T. Last previous edition C 363 94.2Annual Book of ASTM Standa

    14、rds, Vol 03.01.1Copyright ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.where:s5delamination strength, MPa (psi);P 5 ultimate tensile load, N (lb);b 5 initial width of specimen, mm (in.); andt 5 thickness of specimen, mm (in.)9. Report9.1 The report shall include the f

    15、ollowing:9.1.1 Description of core material; cell size, density, andtype,9.1.2 Dimensions of the test specimen,9.1.3 Any special treatment of core before test such asboiling water, and so forth,9.1.4 Test temperature and specimen time at temperature,9.1.5 Test machine cross-head loading rate,9.1.6 D

    16、elamination strength; individual values and average,and9.1.7 Description of failure mode, and where the failureoccurred.10. Precision and Bias10.1 PrecisionThe precision of the procedure in TestMethod C 363 for measuring the honeycomb core materialdelamination strength is not available.10.2 BiasSinc

    17、e there is no accepted reference materialsuitable for determining the bias for the procedure in this testmethod, bias has not been determined.11. Keywords11.1 delamination strength; honeycomb core; node bondstrengthThe American Society for Testing and Materials takes no position respecting the valid

    18、ity of any patent rights asserted in connectionwith any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any suchpatent rights, and the risk of infringement of such rights, are entirely their own responsibility.This standard is subje

    19、ct to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM Headquarters. Your comm

    20、ents will receive careful consideration at a meeting of the responsibletechnical committee, which you may attend. If you feel that your comments have not received a fair hearing you should make yourviews known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighte

    21、d by ASTM, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the above address or at610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website (www.astm.org).FIG. 1 Honeycomb Core Delamination Test SetupC 3632


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