ASTM D999-2008(2015) Standard Test Methods for Vibration Testing of Shipping Containers《船运集装箱振动试验的标准试验方法》.pdf

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1、Designation: D999 08 (Reapproved 2015)Standard Test Methods forVibration Testing of Shipping Containers1This standard is issued under the fixed designation D999; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revi

2、sion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 These test methods cover vibration tests of filled ship-ping containers. Such tests may be used to assess the perfor-mance of a

3、 container, with its interior packing and means ofclosure, both in terms of its strength and of the protection itprovides its contents when it is subjected to vibration such asit experiences in transportation. These procedures are suitablefor testing containers of any form, material, kind, design of

4、interior packing, means of closure, and any size and weight.They are not intended for determining the response of productsto vibration for product design purposes, nor are they intendedfor tests of products in their operational configuration as othermore suitable procedures are available for these p

5、urposes.2,31.2 The following methods appear:Method A1Repetitive Shock Test (Vertical Motion).Method A2Repetitive Shock Test (Rotary Motion).Method BSingle Container Resonance Test.Method CPalletized Load, Unitized Load, or VerticalStack Resonance Test.1.3 For testing of intermediate bulk containers

6、(IBCs) con-taining liquid hazardous materials, refer to Test MethodD7387.1.4 These test methods fulfill the requirements of Interna-tional Organization for Standardization standards ISO 8318and ISO 2247. The ISO standards may not meet the require-ments for these methods.1.5 The values stated in inch

7、-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.6 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is th

8、eresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. Specific precau-tionary statements are given in Section 6.2. Referenced Documents2.1 ASTM Standards:4D996 Terminology of Packagi

9、ng and Distribution Environ-mentsD3580 Test Methods for Vibration (Vertical Linear Motion)Test of ProductsD4169 Practice for Performance Testing of Shipping Con-tainers and SystemsD4332 Practice for Conditioning Containers, Packages, orPackaging Components for TestingD7387 Test Method for Vibration

10、Testing of IntermediateBulk Containers (IBCs) Used for Shipping Liquid Haz-ardous Materials (Dangerous Goods)E122 Practice for Calculating Sample Size to Estimate, WithSpecified Precision, the Average for a Characteristic of aLot or Process2.2 ISO Standards:ISO 2247 PackagingComplete, Filled Transpo

11、rtPackagesVibration Test at Fixed Low Frequency5ISO 8318 PackagingComplete, Filled TransportPackagesVibration Tests Using a Variable Frequency53. Terminology3.1 Definitions:3.1.1 For definitions of terms used in these test methods, seeTerminology D996.3.1.2 double amplitude, nthe maximum value of a

12、sinu-soidal quantity (peak-to-peak).3.1.3 octave, nthe interval between two frequencies hav-ing a ratio of two (2).1These test methods are under the jurisdiction of ASTM Committee D10 onPackaging and are the direct responsibility of Subcommittee D10.21 on ShippingContainers and Systems - Application

13、 of Performance Test Methods.Current edition approved Oct. 1, 2015. Published October 2015. Originallyapproved in 1948. Last previous edition approved in 2008 as D999 08. DOI:10.1520/D0999-08R15.2Military Standard Environmental Test Methods, MIL-STD-810F, Method 514,Vibration, available from www.dod

14、ssp.daps.mil/dodssp.htm.3International Electrotechnical Commission Recommendation, Publication 68-2-6, Part 2, Test F: Vibration, Basic Environmental Testing Procedures forElectronic Components and Electrical Equipment, available from American Na-tional Standards Institute, Inc., 25 W. 43rd St., 4th

15、 Floor, New York, NY 10036.4For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.5Available from American National

16、Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.4 power spectral density (PSD), nused to quantify theintensity of random vibration in ter

17、ms of mean-square accel-eration per unit of frequency. The units are g2/Hz (m/s2)2/Hz),where g is the acceleration of gravity, equal to 386 in./s2(9.8m/s2). Power spectral density is the limiting mean square valuein a given rectangular bandwidth divided by the bandwidth, asthe bandwidth approaches z

18、ero.3.1.5 repetitive shock, nimpacts of a package on a testplatform which occur cyclically from input oscillatory motion.3.1.6 resonance, nfor a system undergoing forcedvibration, the frequency at which any change of the excitingfrequency, positive and negative, in the vicinity of the excitingfreque

19、ncy causes a decrease in the response of the system.4. Significance and Use4.1 Shipping containers are exposed to complex dynamicstresses when subjected to vibration present in all transporta-tion vehicles. Approximating the actual damage, or lack ofdamage, experienced in shipping may require subjec

20、ting thecontainer(s) and contents to vibration inputs.4.2 Resonant responses during shipment can be severe andmay lead to package or product failure. Identification of criticalfrequencies, and the nature of package stresses can aid inminimizing the effect of these occurrences.4.3 Vibration tests sho

21、uld be based on representative fielddata. When possible, the confidence level may be improved bycomparing laboratory test results with actual field shipmentdata. It is highly recommended that one understand the mostcommon failures to ones products and packaging indistribution, and then attempt to re

22、plicate those failures in thelaboratory. Once such replication is established, then that testcan become the minimum necessary test for future packagedproducts to pass.4.4 Exposure to vibration can affect the shipping container,its interior packaging, means of closure, and contents. Thesetests allow

23、analysis of the interaction of these components.Design modification to one or more of these components maybe utilized to achieve optimum performance in the shippingenvironment.4.5 Methods A1 and A2, Repetitive Shock Tests, are suitablefor tests of individual containers that are transported unre-stra

24、ined on the bed of a vehicle and may be suitable for tests ofcontainers that might be subjected to repetitive shocks due tomagnification of vibrations in unit loads or stacks.NOTE 1Methods A1 and A2 produce different vibration motions, andtherefore, will generate different forces which may result in

25、 differentdamage modes and intensities. Results from these two methods may notcorrelate with one another.4.6 Method B, Single Container Resonance Test, tests ordetermines the ability of an individual container and its interiorpackaging to protect the contents from transportation vibration,particular

26、ly when the container and its contents might exhibitresonant responses.NOTE 2Individual products that are palletized might be better testedusing Method C.4.7 Method C, Palletized Load, Unitized Load or VerticalStack Resonance Test, covers the determination of the presenceand the effects of resonance

27、 in palletized loads and multiple-unit stacked loads, and whether or not the strength of thecontainers is sufficient to withstand dynamic loads whenstacked.4.8 Any or all of these test methods may be employed, asdetermined by the appropriate performance specification, withtest intensities, frequency

28、 ranges, and test durations as calledfor in the specification.Although these tests do not simulate theshipping environment, they are intended to create the damage-producing potential of the shipping environment. Results ofany one of these methods may differ from the results of theothers.5. Apparatus

29、5.1 Method A1Repetitive Shock Test (Vertical Motion):5.1.1 Vibration Test Machine, with a platform having ahorizontal surface of sufficient strength and rigidity so that theapplied vibrations are essentially uniform over the entire testsurface when loaded with the test specimen. The platform shallbe

30、 supported by a mechanism that vibrates it so the motion isapproximately a vertical sinusoidal input. (A rotary motion ofthe platform is not acceptable.) The double amplitude displace-ment of the vibration shall be fixed at or controlled to 1 in. (25mm), and the frequency shall be variable within th

31、e range from2 to at least 5 Hz (cycles per second). The vibration testmachine shall be equipped with fences, barricades, or otherrestraints to keep the test specimen from falling off theplatform without restricting its vertical motion.5.2 Method A2Repetitive Shock Test (Rotary Motion):5.2.1 Vibratio

32、n Test Machine, with a platform having ahorizontal surface of sufficient strength and rigidity so that theapplied vibrations are essentially uniform over the entire testsurface when loaded with the test specimen. The platform shallbe supported by a mechanism that vibrates it so that the motionis a r

33、otational input with the vertical component approximatelysinusoidal. The double amplitude displacement of the vibrationshall be fixed at 1 in. (25 mm), and frequency shall be variablefrom 2 to at least 5 Hz (cycles per second). The vibration testmachine shall be equipped with fences, barricades, or

34、otherrestraints to keep the test specimen from falling off theplatform without restricting its vertical motion.5.3 Metal Shim:5.3.1 A metal shim is used in Methods A1 and A2 fordetermining when the shipping container is leaving the testingplatform by a sufficient amount as described in Section 9.5.3

35、.2 Specifications for metal shim used in MethodsA1 andA2:Width: 50 mm (20. in.) minimumThickness: 1.6 mm (116 in.)Length: 254 mm (10 in.) minimum5.4 Methods B and CResonance Tests:5.4.1 Vibration Test Machine, with a platform having ahorizontal surface of sufficient strength and rigidity so that the

36、applied vibrations are essentially uniform over the entire testsurface when loaded with the test specimen. The platform shallbe supported by a mechanism capable of producing vibration inD999 08 (2015)2the vertical linear plane at controlled accelerations ordisplacements, or both, over a controlled c

37、ontinuously variablerange of frequencies. (A rotary motion of the platform is notacceptable.) Suitable fixtures and attachment points shall beprovided to rigidly attach the test container to the platform forMethod B. Restraints shall be provided to restrain the horizon-tal motion of the test specime

38、ns on the platform withoutrestricting the vertical motion of the specimen(s), for MethodC.5.5 InstrumentationAccelerometers, signal conditioners,and data display or storage devices are required to measure andcontrol the accelerations at the test surface in Methods B andC. Instrumentation may also be

39、 desirable for monitoring theresponse of the containers and packaged items. The instrumen-tation system shall have a response accurate to within 65%over the range specified for the test. Accelerometers should besmall and light weight enough as to not influence the responseof the item being measured

40、nor influence the results of the test.Detailed information on suitable instrumentation may be foundin the Shock and Vibration Handbook.65.6 Conditioning ApparatusAdequate facilities shall beprovided for conditioning test specimens at selected humidityand temperature prior to or during the test, or b

41、oth, inaccordance with the requirements of the applicable specifica-tion.6. Safety Precautions6.1 These test methods may produce severe mechanicalresponses of the test specimens. Therefore, fences, barricades,and other restraints must have sufficient strength and must beadequately secured. Operating

42、 personnel must remain alert topotential hazards and take necessary precautions for theirsafety. Stop the test immediately if a dangerous conditionshould develop. For example, causing the container to go intoresonance during testing may result in uncontrollable respon-sive bouncing. This may also le

43、ad to a dangerous situation,over-testing, or premature failures and potential safety issues totesting personnel and equipment.7. Test Specimens7.1 The test specimen shall consist of the container, asintended for shipment, loaded with the interior packaging andthe actual contents for which it was des

44、igned. Blemished orrejected products may be used, if the defect is recorded prior tothe test. Dummy test items should be used for developmentaltesting when necessary, but may not be used for final accep-tance testing.NOTE 3Surrogate material may be used when actual product isunacceptable for use (fo

45、r example, package testing for hazardous materi-als). For packaging intended to contain liquid dangerous goods (hazardousmaterials), water should be used as the standard test medium.7.2 Sensors and transducers may be applied with the mini-mum possible alteration of the test specimen, to obtain data

46、onthe container or packaged item.When it is necessary to observethe contents during the test, holes may be cut in noncriticalareas of the container.7.3 Whenever sufficient containers and contents areavailable, it is highly desirable that five or more replicate testsbe conducted to improve the statis

47、tical reliability of the dataobtained (see Practice E122).8. Conditioning8.1 Condition test specimens prior to the test or during thetest, or both, in accordance with the requirements of theapplicable specification. When no conditioning requirementsare given, and the container materials are climatic

48、ally sensitive,a conditioning atmosphere is recommended (see PracticeD4332 for standard and special conditions).9. Procedure9.1 Methods A1 and A2Repetitive Shock Tests:9.1.1 Place the shipping container on the test machineplatform in its normal shipping orientation.9.1.1.1 For Method A1, place the s

49、hipping container in thecenter of the platform. For Method A2, place the shippingcontainer near the backstop or fence, equidistant from eachside of the platform.9.1.1.2 Restraining devices may be needed to prevent theshipping container from moving horizontally or to preventexcessive rocking. Restraining devices may effect the verticalmovement of the shipping container and attention must begiven to how and where restraints are used.9.1.1.3 When restraining devices are used, orient and adjustthe restraining devices to allow free horizontal movement ofthe ship