ISO 15509 pdf download

ISO 15509 pdf download.Adhesives — Determination of the bond strength of engineering- plastic joints 1 Scope This International Standard describes a test method for measuring the shear and/or tensile strength of an adhesively bonded plastic/plastic specimen of a specific design. This method allows the determination of a combined shear and tensile behaviour of the bond. These shear and tensile values are useful for design purposes. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 291 :1 997, Plastics — Standard atmospheres for conditioning and testing ISO 1 0365:1 992, Adhesives — Designation of main failure patterns ISO 1 3895:1 996, Adhesives — Guidelines for the surface preparation of plastics 3 Principle A hollow cylindrical test specimen of specific design is used for the determination of the shear and tensile strengths of adhesively bonded plastic/plastic joints. These values can be used in calculation programmes. The rotationally symmetrical specimen allows testing under tensile, torsional or combined tensile/torsional loads if a suitable test machine is used.NOTE 1 The shear stress is not uniformly distributed as the stress varies by approximately from the inner radius to the outer radius. Therefore the calculated shear strength represents an “average” value. NOTE 2 The origin of the stress distribution curve is the deformation of the bond line, as the deformation increases with increasing diameter. The superimposition of shear and tensile stresses is negligible in the bondline of rotationally symmetrical specimen compared to lap-shear specimen as described in ISO 4587, Adhesives — Determination of tensile lap-shear strength of rigid-to-rigid bonded assemblies . There are practically no significant peaks in the stress distribution curve compared with the peaks observed in a lap-shear specimen, since the bond is continuous in the direction of the displacement. 4 Specimen The spacers shall be made of the same material as the adherends in order to eliminate differences in thermal expansion between the spacers and the adherends. The spacers shall be linked to...