ASTM_D_2586_-_68_1990e1_scan.pdf

IND-STD ASTM D25b-68(R5)C f l 7777798 0002835 3 W L ASTM D2586-68(R85)20 November 1987 ADOPTION NOTICE This non-Government document was adopted on 20 November 1907 and is approved for use by the DOO.The indicated industry group has furnished the clearance required by existing regulations.Copies of the document are stocked by DOO Single Stock Point,Naval Publications and Forms Center,Phlladelphia,PA 19120,f o r issue t o DOO a c t i v i t i e s only.Contractors and industry groups must obtain copies from ASTW,1916 Race S t r e e t,Philadelphia,PA 19103.T i t l e o f Document:Standard Test Method f o r Hydrostatic Cornpresslve Strength of Glass-Reinforced Plastic Cylindres Date OF Specific Issue Adopted:September 9,1968 Re1 easing Indus t r y Group:Custodians:Army-MR Navy-YO Air Force-99 American Soclety f o r Testing and Materlals Military.Coordinating Activity:Navy-YO(Project 9330-1002)Review Actlvlties:Navy-SH AlrForce-84 DCA-G S AMSC N I A AREA CMPS,-DISTRIBUTION STATEMENT A.Approved For public release;dlstribution i s un1 l m i ted-.PAGES.I i I.THIS DOCUMENT CONTAINS-NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.ASTM D2586 bA E 0757530 0058433 7 Designation:D 2586-68(Weappoved 1990)AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Raco SI.Philadelphia.Pa.19103 Reprinted from lhe Annual Book of ASTM Standards,Copyrighl ASTM II not lisled in lhe currenl combined index.will appear in lhe nexl edition.This standard is issued under the fixed designation D 2586;the number immediately following the designation indicates the year of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon(c)indicates an editorial change since the last revision or reapproval.This siundard lias been approved for icse by agencies o f the Depariment o f Defense.Consirit h e Dol)Index o f SpecijieOiians and Siandards for the speci/ic year olissiie which has been adopied by the Depariment o f Definse.NOTE-New sections I I and 12 were added editorially in April 1990.1.Scope 1.1 This test method covers the determination of the compressive strength properties of filament-wound glass reinforced plastic cylinders of standard size in hydrostatic compression.This test method is generally applicable to hollow cylinders made of glass reinforced plastics,and particularly those formed by filament winding.This test method may be applied to both unidirectional and orthotropic laminates,but is limited to constructions con-taining greater than 50%by weight of glass reinforcement.1.2 The values stated in inch-pound units are to be regarded as the standard.The values in parentheses are for information only.1.3 This standard may involve hazardous materials,oper-ations,and equipment.This standard does not purport to address all o f the safety problems associated with its use.It is the responsibility o f the user o f this standard to establish appropriate safety and health practices and determine the applicability o f regulatory limitations prior to,use.2.Summary of Test Method 2.1 A cylinder is fabricated with glass-filament reinforce-ment,which has been impregnated with a resin binder.Fabrication is accomplished by machine filament winding,or hand-layup techniques,or both.Following fabrication,the cylinder is cured,according to the schedule required for the particular resin-reinforcement system.2.2 The cured cylinder is then sectioned and finish machined into a specimen of the specified standard size and dimensional tolerances.2.3 The finished specimen is mounted between end-plate fixtures(see Fig.1)and positioned within the bore of a pressure chamber capable of exerting the necessary hydro-static pressure.The specimen is located within the pressure chamber so as to allow free flow of the test fluid around the closed-end test specimen(see Fig.2).The specimen is compressed to failure by raising the pressure of the fluid surrounding the specimen.The interior of the specimen is normally vented to the atmosphere.In those cases where it is I This test method is under the jurisdiction of ASTM Committee D-30 on High Modulus Fiben and Their Composites and is the direct responsibility of Subconimiitee D30.04 on High-Performance Fibers and Composites.Current edition approved Sept.9,1968.Published Novemkr 1968.Originally published as D 2586-67.Last previous edition D 2586-67 T.desirable to minimize the catastrophic collapse of high-strength cylinders,it is acceptable to fill the interior of the specimen to the atmosphere through a flow-control valve(see Fig.2).Compressive strength is calculated using the maximum pressure at rupture,sind the specimen dimen-sions.3.Significance and Use 3.1 Compressive strength values determined by this method provide a convenient“figure of merit”for com-paring a spectrum of fdament-wound laminates.The method provides a means