BS ISO 15509:2019 pdf free download – Adhesives一Determination of the bond strength of engineering-plastic joints.
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 the metal sleeves which shall be freely movable along the guide pins.
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.
Assemble both baseplates (with the adherends but without adhesive) by introducing the guide pins into the sleeves and verify the gap between them (for the adhesive bond). The gap can be adjusted by means of the adjustment screws.
NOTE 2 The adjustment is usually made in order to achieve a bond thickness of 0,1 mm.
5.4 Application of the adhesive
Apply the adhesive using the application device as shown in Figure 4. as follows.
Place a baseplate carrying one of the adherends under the dispenser.
Adjust the dispenser so that the nozzle is located exactly above the application area. Apply the adhesive.
NOTE An automated rotating device coupled with the dispenser has been shown to give good results.
Assemble the two halves of the mounting jig and cure the adhesive in accordance with the manufacturer’s
instructions.
5.5 Conditioning and testing atmosphere
The specimens shall be conditioned and tested in one of the standard laboratory atmospheres specified in ISO 291.
6 Apparatus
5.1 Test machine, equipped with a temperature-controlled enclosure for tests carried out at
temperatures other than ambient.
5.2 Clamping jig (see Figure 5), consisting of an adapter, and two jaws with hinge, screw and locknut.
NOTE This special clamping jig allows easy and quick fixing of the specimen In the test machine.
7 Procedure
Place the adapter and the specimen in the jaws. Secure them with the screws. Draw in the locknut to hold the specimen by its flange.
Insert the clamping jigs in the test machine, ensuring that no load is applied to the bonded joint.
Apply a tensile force at a crosshead speed of 1 mm/mm and/or a torsional force at a speed of 5°/mm until the joint fails. Record the ultimate force reached during the test.
Examine the surface of the bonded parts after failure, and record the failure pattern in accordance with iSO 10365.
9 Precision
The precision data of this test method are not available at the time of publication.
10 Test report
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.