BS ISO 15509:2019 pdf download – Adhesives — Determination of the bond strength of engineering-plastic joints This document 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 documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 291, Plastics — Standard atmospheres for conditioning and testing ISO 10365, Adhesives — Designation of main failure patterns ISO 17212, Structural adhesives — Guidelines for the surface preparation of metals and plastics prior to adhesive bonding 3? Terms? and? definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https://www.iso.org/obp — IEC Electropedia: available at http://www.electropedia.org/ 4 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 15 % 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,. 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. 5.1.3 Injection-moulding parameters The parameters shall be agreed upon between the user and the plastic material supplier. NOTE 1 The injection-moulding parameters will depend on the geometry of the mould and the nature of the plastic material. The plastic material...
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