Variability of structural aluminium alloys mechanical properties
| Autor: | Ivica Džeba, Tihomir Dokšanović, Damir Markulak |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
business.industry chemistry.chemical_element 020101 civil engineering 02 engineering and technology Building and Construction Function (mathematics) Structural engineering Welding 0201 civil engineering Degree (temperature) law.invention 020303 mechanical engineering & transports 0203 mechanical engineering chemistry Aluminium law Ultimate tensile strength Margin of safety Experimental work Reliability Design Material partial factor Safety Risk Reliability and Quality business Reliability (statistics) Civil and Structural Engineering |
| Popis: | Content of alloying elements, type of treatment, welding and testing parameters result in variability of mechanical properties of aluminium alloys, which needs to be taken into account in design procedures. The degree of variability and current nominal values safety level were evaluated using a collection of results from published sources, expanded with experimental work. Processed results of proof and tensile strengths were fitted to distributions and cumulative function relevant fractiles for design purposes determined. It was established that ratios of characteristic to nominal values vary from 1.23 to 0.75, being unsafe or having a built in excess margin of safety, so new nominal values were proposed. These new values provide a more economical material partial factor value and a uniform reliability level. |
| Databáze: | OpenAIRE |
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