Abstract
Structural integrity and failure assessment have been considered by many fields of engineers as it is a multi-disciplinary concept. The assessment procedure vitally ensures that structural elements will remain functional throughout their service lives. Structural failure refers to the loss of structural integrity by means of loss at the component- or system-level elements. The main concern of integrity assessment is that a structural failure may be avoided at the service level by designing the structure to withstand its designated loads. Hence, for satisfactory structural performance, structural safety, failure, and interaction between them should be considered throughout the design and analysis stages. This book is a collection of chapters that provide the researcher with a comprehensive perspective on structural integrity and its sub-disciplines.
Highlights
Mass application of welded structures began with the development of welding procedures on the one hand and the development of steels with suitable properties on the other
Practice has shown that structures that are exposed to the effects of variable load during operation are most prone to accidents and fractures
The reason for the application of fracture mechanics is based on the fact that in the presence of errors, which inevitably occur as a result of imperfections in production processes and/or in operation, there is a loss of load-bearing structure elements and time as a whole
Summary
Mass application of welded structures began with the development of welding procedures on the one hand and the development of steels with suitable properties on the other. The traditional, well-known, S-N approach is based on the experimental determination of the dependence of the stress amplitude from the number of cycles to fracture This standard method is built into many standards and regulations and is widely used in the design of welded and other structures. In this test, as a rule, only the number of changes of the load to fracture under the action of a constant range load is determined, and the standard only requires information on the magnitude of the stress at which crack and fracture initiation does not occur after a certain number of cycles (usually between 106 and 108 cycles). The constants that occur such as “C” i “m” in Paris’ law da/dN=C ΔKm, must be determined separately for each material and the specific test conditions These data are essential for three types of fatigue analysis:.
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