CAVITATION RESISTANCE OF THE MATERIAL PA 3200 GF PRODUCED BY SELECTIVE LASER SINTERING

The present study focuses on the results of cavitation resistance research of samples obtained by the Selective Laser Sintering technology. The material used was Polyamide powder PA 3200 GF reinforced with glass fibers. The laser-sintered samples were produced from 100% new and recycled powder mixed with 70% of new powder. The samples were tested under cavitation conditions using an ultrasonic vibration method with a stationary sample according to the ASTM G-32 standard. Examination of the morphology of cavitation damage was investigated by scanning electron microscopy. The change in mass loss during different cavitation times was measured on the tested samples. The main objective of the research was to determine the validity application of the tested material in cavitation condition

EFFECT OF SECTION THICKNESS ON CAVITATION BEHAVIOUR OF SELECTIVE LASER SINTERED POLYAMIDE 12

The present study focuses the cavitation resistance results of samples obtained by the Selective Laser Sintering technology. All samples were made from Nylon 12 – Polyamide 12 powder, also known as PA2200 in the industry, produced by EOS GmbH. The powder used for building the samples represented a mixture of 50% new powder and 50% recycled powder. Samples with different section thicknesses (0.4mm; 0.8mm and 1.0mm) were subjected to the ultrasonically induced cavitation test method to investigate the effect of geometry on their cavitation behaviour. The change in mass loss during different cavitation times was measured on the tested samples. The morphology of cavitation damage was characterized using Scanning Electron Microscopy (SEM). The results obtained in this paper have shown that section thickness of the samples has a significant influence on the cavitation resistance, with the highest cavitation resistance obtained for the samples a thickness of 0.4mm

Effect of the position in the build chamber on the fatigue strength of DMLS produced maraging steel

Previous studies investigated the effects of build orientation, allowance for machining, heat and surface treatments on the fatigue response of DMLS produced Maraging steel. This work focuses on the potential effect of the position of the built part in the chamber on the generation of powder residuals and consequently on the fatigue strength. The retrieved S-N curves indicate the response keeps unaffected by this factor.The authors wish to acknowledge the support of European Commission through the project “Advanced design rules for optimal dynamic properties of additive manufacturing products – A_MADAM”, which has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 734455.Publishe

As fabricated DMLS produced 15-5PH stainless steel: effects of post-manufacture treatments

Previous investigations dealt with the effects of build orientation and allowance for machining on the fatigue strength of DMLS produced Stainless Steel 15-5 PH1. Additional studies on Maraging Steel in the “as built” condition, highlighted the heat or surface treatments that are able to enhance the fatigue strength. This work deals with an extensive experimental campaign involving as fabricated 15-5 PH1: the effects of heat treatment, machining and shot-peening. after machining have been assessed. The retrieved S-N curves have been compared by statistical methods, highlighting the beneficial effect of the post-machining peening treatment.The authors wish to acknowledge the support of European Commission through the project “Advanced design rules for optimal dynamic properties of additive manufacturing products – A_MADAM”, which has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 734455.Publishe

Effect of machining and heat treatment on the fatigue properties of Maraging steel MS1 manufactured by DMLS

The authors wish to acknowledge the support of European Commission through the project “Advanced design rules for optimal dynamic properties of additive manufacturing products – A_MADAM”, which has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 734455.Publishe

A two-factor experimental study of on the fatigue properties of 15-5 PH stainless steel obtained by powder bed laser fusion

The authors wish to acknowledge the support of European Commission through the project “Advanced design rules for optimal dynamic properties of additive manufacturing products – A_MADAM”, which has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 734455.Publishe

An Experimental Study on the Fatigue Response of 15-5 PH Stainless Steel Built by DMLS

The authors wish to acknowledge the support of European Commission through the project “Advanced design rules for optimal dynamic properties of additive manufacturing products – A_MADAM”, which has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 734455.Publishe

Cavitation resistance of the material PA 3200 GF produced by selective laser sintering

The present study focuses on the results of cavitation resistance research of samples obtained by the Selective Laser Sintering technology. The samples were made from polyamide powder reinforced with glass beads – PA 3200 GF. The laser-sintered samples were produced from 100% new and recycled powder mixed with 70% of new powder. The samples were tested under cavitation conditions using an ultrasonic vibration method with a stationary sample according to the ASTM G32 standard. Examination of the morphology of cavitation damage was investigated by scanning electron microscopy. The change in mass loss during different cavitation times was measured on the tested samples. The main objective of the research was to determine the validity of the application of the tested material in cavitation conditions

Machining and Heat Treatment Effects on the Fatigue Properties of Maraging Steel Produced by DMLS

The authors wish to acknowledge the support of European Commission through the project “Advanced design rules for optimal dynamic properties of additive manufacturing products – A_MADAM”, which has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 734455.Publishe