1、Designation:D187906(Reapproved 2014)Standard Practice forExposure of Adhesive Specimens to Ionizing Radiation1This standard is issued under the fixed designation D1879;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()indicates an editorial change since the last revision or reapproval.1.Scope1.1 The purpose of this practice is to define conditions forthe exposure of polymeric adhesives in bonded specimens toionizing radia
3、tion prior to determination of radiation-inducedchanges in physical or chemical properties.This recommendedpractice specifically covers the following kinds of radiation:gamma or X-ray radiation,electron or beta radiation,neutrons,and mixtures of these such as reactor radiation.1.2 This practice spec
4、ifies only the conditions of irradiationbut does not cover the preparation of test specimens,testingconditions,or the evaluation of test.These are covered in thevariousASTM methods or specifications for specific materials.1.3 This practice covers procedures for the following fivetypes of exposure:Pr
5、ocedure AExposure at ambient conditions.Procedure BExposure at controlled temperature.Procedure CExposure in a medium other than air.Procedure DExposure under load.Procedure EExposure combining two or more of thevariables listed in Procedures A to D.NOTE1The problems of measuring the properties of m
6、aterials duringirradiation involve shielding and remote control facilities and are,therefore,not considered in this practice.1.4 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are provided forinformation purposes only.1.5 This standard does not purpor
7、t to address all of thesafety concerns,if any,associated 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.1.5.1 Electrical Hazard:WarningThe users of this pr
8、ac-tice must be aware that there are inherent dangers associatedwith the use of electrical instrumentation and that this practicecannot and will not substitute for a practical knowledge of theinstrument used for a particular procedure.1.5.2 Radio Frequency:WarningPersons with pacemak-ers may be affe
9、cted by the radio frequency.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD907 Terminology of AdhesivesD1672 Practice for Exposure of Polymeric Materials toHigh-Energy Radiation(Withdrawn 1984)3D2953 Classification System for Polymeric Materials forServ
10、ice in Ionizing Radiation(Withdrawn 1984)3E170 Terminology Relating to Radiation Measurements andDosimetryE261 Practice for Determining Neutron Fluence,FluenceRate,and Spectra by Radioactivation TechniquesE666 Practice for Calculating Absorbed Dose From Gammaor X RadiationE720 Guide for Selection an
11、d Use of Neutron Sensors forDetermining Neutron Spectra Employed in Radiation-Hardness Testing of ElectronicsE2005 Guide for Benchmark Testing of Reactor Dosimetryin Standard and Reference Neutron Fields2.2 ISO/ASTM Standards:2ISO/ASTM 51261 Guide for Selection and Calibration ofDosimetry Systems fo
12、r Radiation ProcessingISO/ASTM 51649 Practice for Dosimetry in an ElectronBeam Facility for Radiation Processing at Energies Be-tween 300 keV and 25 MeVISO/ASTM 51702 Practice for Dosimetry in Gamma Irra-diation Facilities for Radiation ProcessingISO/ASTM 51818 Practice for Dosimetry in an ElectronB
13、eam Facility for Radiation Processing at Energies Be-tween 80 and 300 keV1This practice is under the jurisdiction of ASTM Committee D14 on Adhesivesand is the direct responsibility of Subcommittee D14.80 on Metal BondingAdhesives.Current edition approved March 1,2014.Published March 2014.Originallya
14、pproved in 1961.Last previous edition approved in 2006 as D1879 06.DOI:10.1520/D1879-06R14.2For 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
15、 page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.3 ANSI Document:N1.1 Glossary of Terms in Nuclear Science and Technology42.3 IE
16、EE Documents:5278 Classifying Electrical Insulating Materials Exposed toNeutron and Gamma Radiation323 Qualifying Class 1E Equipment for Nuclear PowerGenerating Stations3.Terminology3.1 Many terms in this practice are defined in TerminologyD907 and in Terminology E170.3.2 gray,nthe unit of absorbed dose when the energy perunit mass imparted to matter by radiation is one joule perkilogram.3.3 rad,nthe unit of absorbed dose when the energy perunit mass imparted to matter by radiation is 100 ergs p
