1. Introduction 3
2. Structure of the course paper 5
3. Contents of the course paper parts 6
3.1. Introduction 6
3.2. Main part 6
3.2.1. Choice of material and specimens type for pendulum-type impact machine testing, determination of impact toughness 6
3.2.2. Description and estimation of a fracture type 8
3.2.3. Estimation of influence of impact specimens notch radius on fracture character 12
3.2.4. Determination of cold brittleness temperature by means of serial dynamic bending tests 14
Appendix 1 TASK 17
Appendix 2 impact toughness data values after the test of impact specimens 18
KCU (type Ι) 18
KCV (type IV) 18
Appendix 3 macrophotographs of fractures 19
Appendix 4 microphotographs of fractures 28
Appendix 5 design regulations of the course paper 39
Introduction 39
Title page 39
Task of the course paper 40
Abstract 40
Contents 41
List of conventional signs, symbols, contractions, terms 41
Main part 41
Introduction 42
Essence of explanatory note 42
Conclusions 43
List of references 43
Requirements tо structural elements presentation 43
Rules of the explanatory note execution 44
Resources 46
