ISO 15107 pdf download

ISO 15107 pdf download.Adhesives — Determination of cleavage strength of bonded joints 1 Scope This International Standard describes a method for the determination of the cleavage strength of adhesive joints. The method can only be used for comparing adhesives, and the results cannot be used for design purposes. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 291 :1 997, Plastics — Standard atmospheres for conditioning and testing. ISO 4588:1 995, Adhesives — Guidelines for the surface preparation of metals. ISO 5893:1 993, Rubber and plastics test equipment — Tensile, flexural and compression types (constant rate of traverse) — Description. ISO 7500-1 :— 1 ) , Metallic materials — Verification of static uniaxial testing machines — Part 1 : Tensile/compression testing machines. ISO 91 42:1 990, Adhesives — Guide to the selection of standard laboratory ageing conditions for testing bonded joints. 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 Definition For the purposes of this International Standard, the following definition applies: cleavage strength: The average force per unit width of the bond line required to produce progressive separation, by a wedge or other crack-opening-type action, of two adherends of sufficient thickness to preclude significant bending. It is expressed in newtons per millimetre of width. 4 Principle A bonded specimen of specified dimensions is split along the line of cleavage by loading it in a tensile mode. The pins connecting the specimen to the tensile-testing machine are located eccentrically with respect to the centre of the bonded area. The loading induces a mode 1 fracture. NOTE — A definition of mode 1 fracture is given in ASTM E 1 823:1 996, Terminology relating to fatigue and fracture testing . 5 Apparatus 5.1 Tensile-testing machine, capable of maintaining a pre-determined constant crosshead rate. The machine shall be capable of determining a maximum load. The measured strength shall lie between 1 5 % and 85 % of the full-scale capacity...