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Vlasic, Frantisek
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Publications (4/4 displayed)
- 2021Influence of Surface Finishing to Fatigue Process in Additive Material
- 2020Acoustic Emission Response to Erosion-Corrosion and Creep Damage in Pipeline Systemscitations
- 2020Detecting Pneumatic Actuator leakage using acoustic emission monitoring citations
- 2017Fatigue Behaviour Evaluation of Additively and Conventionally Produced Materials by Acoustic Emission Methodcitations
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document
Influence of Surface Finishing to Fatigue Process in Additive Material
Abstract
Additive materials are no longer a novelty and are commonly used in various type of industries. Therefore, it is neces-sary to improve its manufacturing and quality to expand production. Presented study deals with evaluation of effect of surface treatment on fatigue properties of material made by Selective Laser Melting (SLM). Tested material is alumini-um alloy AlSi10Mg. This kind of material is commonly used with SLM technology, but no large-scale study has yet been conducted focusing on fatigue and surface quality. Sets of specimens are divided into several groups according to sur-face treatment. Surface treatment is as-built, sand blasted or polished. For test specimens with a circular cross-section, the fatigue resistance in bending is tested and the acoustic emission method is used for the purpose of identification of fatigue processes and prediction of fatigue life. Our previous studies have shown that this method can be used to compare materials well, for example by comparing the contribution of the stages of the fatigue process to the total service life. Results shows that surface quality has big influence on fatigue. It is interesting that specimens with sand blasted surface (rougher) have better fatigue lifetime than polished.