BS ISO 15509:2019 pdf free
BS ISO 15509:2019 pdf free.Adhesives一Determination of the bond strength of engineering-plastic joints
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.
The alignment of the adherends in the two halves of the mounting jig shall be ensured by a metal centering cone on each baseplate. Each cone shall be freely rotating and have a spring (strong enough to prevent the adherend sliding) which presses the adherend against the centering cone. When contact is established between the adherends and the centering cones, fix the adherends in place at the fixation points.
The test report shall include the following information:
a) a reference to this document, i.e. ISO 15509:2019;
b) all details necessary for complete identification of the adhesive tested, including type, source and manufacturer’s code number, batch or lot number, etc.;
c) all details necessary for complete identification of the adherends used, including details of preparation and moulding, the method of preparation of the surface prior to bonding, the conditions used to cure the adhesive and the atmosphere used to condition the specimens;
d) the test conditions and test mode (tensile or torsional);
e) the number of specimens tested;
f) the shear and/or tensile strength of each specimen;
g) the failure pattern of each specimen, in accordance with ISO 10365;
h) the date of the testing.BS ISO 15509 pdf free download.
