ASTM E1736-2005 Standard Practice for Acousto-Ultrasonic Assessment of Filament-Wound Pressure Vessels《丝绕制高压容器的超声波评定用标准实施规程》.pdf
《ASTM E1736-2005 Standard Practice for Acousto-Ultrasonic Assessment of Filament-Wound Pressure Vessels《丝绕制高压容器的超声波评定用标准实施规程》.pdf》由会员分享,可在线阅读,更多相关《ASTM E1736-2005 Standard Practice for Acousto-Ultrasonic Assessment of Filament-Wound Pressure Vessels《丝绕制高压容器的超声波评定用标准实施规程》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E 1736 05Standard Practice forAcousto-Ultrasonic Assessment of Filament-WoundPressure Vessels1This standard is issued under the fixed designation E 1736; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、 revision. A 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 practice covers a procedure for acousto-ultrasonic(AU) assessment of filament-wound pressure vessels. Guide-lines ar
3、e given for the detection of defect states and flawpopulations that arise during materials processing or manufac-turing or upon exposure to aggressive service environments.Although this practice describes an automated scanning mode,similar results can be obtained with a manual scanning mode.1.2 This
4、 procedure recommends technical details and rulesfor the reliable and reproducible AU detection of defect statesand flaw populations. The AU procedure described herein canbe a basis for assessing the serviceability of filament-woundpressure vessels.1.3 The objective of the AU method is primarily the
5、assessment of defect states and diffuse flaw populations thatinfluence the mechanical strength and ultimate reliability offilament-wound pressure vessels. The AU approach and probeconfiguration are designed specifically to determine compositeproperties in lateral rather than through-the-thickness di
6、rec-tions.21.4 The AU method is not for flaw detection in the conven-tional sense. The AU method is most useful for materialscharacterization, as explained in Guide E 1495, which givesthe rationale and basic technology for the AU method. Flawsand discontinuities such as large voids, disbonds, or ext
7、endedlack of contact of interfaces can be found by other nondestruc-tive examination (NDE) methods such as immersion pulse-echo ultrasonics.1.5 The values stated in SI units are to be regarded as thestandard.1.6 This standard does not purport to address all of thesafety concerns, if any, associated
8、with its use. It is theresponsibility 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.2. Referenced Documents2.1 ASTM Standards:3E 543 Practice for Agencies Performing NondestructiveTestingE 10
9、01 Practice for Detection and Evaluation of Disconti-nuities by the Immersed Pulse-Echo Ultrasonic MethodUsing Longitudinal WavesE 1067 Practice for Acoustic Emission Examination ofFiberglass Reinforced Plastic Resin (FRP) Tanks/VesselsE 1316 Terminology for Nondestructive TestingE 1495 Guide for Ac
10、ousto-Ultrasonic Assessment of Com-posites, Laminates, and Bonded Joints2.2 ASNT Standards:4ANSI/ASNT CP-189 Personnel Qualification and Certifica-tion in Nondestructive TestingASNT SNT-TC-1A Personnel Qualification and Certifica-tion in Nondestructive Testing2.3 AIA Standard:5NAS-410 Certification
11、and Qualification of NondestructiveTest Personnel3. Terminology3.1 DefinitionsRelevant terminology and nomenclatureare defined in Terminology E 1316 and Guide E 1495.3.2 Definitions of Terms Specific to This Standard:3.2.1 composite shella multilayer filament-winding thatcomprises a second shell tha
12、t reinforces the inner shell. Thecomposite shell consists of continuous fibers, impregnated witha matrix material, wound around the inner shell, and cured inplace. An example is the Kevlar-epoxy filament-wound spheri-cal shell shown in Fig. 1. The number of layers, fiber1This practice is under the j
13、urisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.04 onAcoustic Emission Method.Current edition approved June 1, 2005. Published June 2005. Originallyapproved in 1995. Last previous edition approved in 2000 as E 1736 - 00.2Vary, A., “Ac
14、ousto-Ultrasonics,” Nondestructive Testing of Fibre-ReinforcedPlastics Composites, Vol 2, J. Summerscales, ed., Elsevier Science Publishers Ltd.,Barking, Essex, England, 1990, Chapter 1, pp. 1-54.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at
15、 serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4Available from TheAmerican Society for Nondestructive Testing (ASNT), P.O.Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518.5Available from Aerospace Industrie
16、s Association of America, Inc. (AIA), 1250Eye St., NW, Washington, DC 20005.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.orientation, and composite shell thickness may vary from pointto point (Fig. 2). The examination and assessme
17、nt of thecomposite shell are the objectives of this practice.3.2.2 filament-wound pressure vesselan inner shell over-wrapped with composite layers that form a composite shell.The inner shell or liner may consist of an impervious metallicor nonmetallic material. The vessel may be cylindrical orsphero
18、idal and will have at least one penetration with valveattachments for introducing and holding pressurized liquids orgases.4. Significance and Use4.1 The AU method should be considered for vessels thatare proven to be free of major flaws or discontinuities asdetermined by conventional techniques. The
19、 AU method maybe used for detecting major flaws if other methods are deemedimpractical. It is important to use methods such as immersionpulse-echo ultrasonics (Practice E 1001) and acoustic emission(Practice E 1067) to ascertain the presence of major flawsbefore proceeding with AU.4.2 The AU method
20、is intended almost exclusively formaterials characterization by assessing the collective effects ofdispersed defects and subcritical flaw populations. These arematerial aberrations that influence AU measurements and alsounderlie mechanical property variations, dynamic load re-sponse, and impact and
21、fracture resistance.64.3 TheAU method can be used to evaluate laminate qualityusing access to only one surface, the usual constraint imposedby closed pressure vessels. For best results, the AU probesmust be fixtured to maintain the probe orientation at normalincidence to the curved surface of the ve
22、ssel. Given theseconstraints, this practice describes a procedure for automatedAU scanning using water squirters to assess the serviceabilityand reliability of filament-wound pressure vessels.75. Limitations5.1 TheAU method possesses the limitations common to allultrasonic methods that attempt to me
23、asure either absolute orrelative attenuation. When instrument settings and probe con-figurations are optimized for AU, they are unsuitable forconventional ultrasonic flaw detection because the objective ofAU is not the detection and imaging of individual micro- ormacro-flaws.5.2 The AU results may b
24、e affected adversely by thefollowing factors:(1) couplant (squirter or water jet) variations and bubbles,(2) vessel surface texture and roughness,(3) improper selection of probe characteristics (centerfrequency and bandwidth),(4) probe misalignment,(5) probe resonances and insufficient damping, and(
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
5000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTME17362005STANDARDPRACTICEFORACOUSTOULTRASONICASSESSMENTOFFILAMENTWOUNDPRESSUREVESSELS 丝绕制 高压 容器 超声波

链接地址:http://www.mydoc123.com/p-529349.html