BS EN ISO 12737:2010 PDF

BS EN ISO 12737:2010 Metallic materials. Determination of plane-strain fracture toughness BS EN ISO 12737 is an International Standard which specifies the ISO method for determining the plane-strain fracture toughness of homogeneous metallic materials using a specimen that is notched and precracked by fatigue, and subjected to slowly increasing crack displacement force. Contents of BS EN ISO 12737: Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols and designations 5 Principle 6 Apparatus 6.1 Testing machine and force measurement 6.2 Fatigue cracking machine 6.3 Displacement gauge 6.4 Testing fixtures 7 Test specimen size, configuration and preparation 7.1 Specimen size 7.2 Recommended specimen proportions 7.2.1 Recommended specimens 7.2.2 Alternative proportions 7.2.3 Alternative specimen configurations 7.2.4 Fatigue-crack starter notch 7.3 Specimen preparation and fatigue precracking 7.3.1 Material condition 7.3.2 Crack-plane orientation 7.3.3 Machining 7.3.4 Fatigue precracking 8 Procedure 8.1 Specimen measurement 8.2 Specimen test te...