{"title":"Effect of Heat Treatment on Microstructure and Mechanical Properties of Medium-Carbon Steel Drawn Wire","authors":"Amina Ourabi, Mosbah Zidani, Salim Messaoudi, Tahar Abid, Mohamed Chaouki Nebbar, François Brisset, Thierry Baudin","doi":"10.4271/05-16-04-0026","DOIUrl":"https://doi.org/10.4271/05-16-04-0026","url":null,"abstract":"<div>In this article, the effect of heat treatment on the microstructure and mechanical behavior of medium-carbon steel wire intended for the spring mattress is investigated using scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), X-ray diffraction, Vickers hardness (Hv), and tensile strength. The results indicate that the microstructure elongation along the wire axis is observed with the bending and kinking lamellae at the deformation level of 57.81%, this change appears as a fracture in the microstructure and leads to an increase in hardness, tensile strength, and intensities of diffraction patterns. After heat treatment, we observed a redistribution in the grain, which is almost the same in the wire rod and drawn wires; indeed, this led to a decrease in hardness, tensile strength, and augmentation in intensities of peaks. The EBSD pole figures reveal the development of texture in the cementite slip plane (001).</div>","PeriodicalId":45859,"journal":{"name":"SAE International Journal of Materials and Manufacturing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135294666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alaa Salahuddin Araibi, A. I. M. Shaiful, Muhanad Hatem Shadhar
{"title":"Advanced Value Stream Mapping: Development of a Conceptual Model Considering Variability in Production Processes","authors":"Alaa Salahuddin Araibi, A. I. M. Shaiful, Muhanad Hatem Shadhar","doi":"10.4271/05-16-04-0025","DOIUrl":"https://doi.org/10.4271/05-16-04-0025","url":null,"abstract":"<div>Recently, lean manufacturing (LM) practices are being combined with tools and techniques that belong to other areas of knowledge such as risk management (RM). Value stream mapping (VSM) is a well-known tool in showing the value, the value stream, and the flow, which represents the three lean principles. VSM and RM, when used in tandem with one another, are more advantageous in covering VSM issues such as the variability of production processes. In this article, a conceptual model that integrates the two is shown and explained. The model helps to generate scenarios of current state map (CSM) and future state map (FSM) in a dynamic way by identifying current and potential risks. These risks might happen in the future, bringing with it negative ramifications including not reaching the main objectives within the defined time. The model has been tested in a coffee production company belonging to health and food sector. The proposed model specified the ranges of variability through the drawing of CSM and FSM. This is quite a milestone because one of the challenges of VSM is that it is a static tool, and, as such, process variability cannot be captured appropriately. This new model is expected to overcome this drawback.</div>","PeriodicalId":45859,"journal":{"name":"SAE International Journal of Materials and Manufacturing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135096427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparative Study on the Fatigue Behavior of Jute-Wool Felt/Epoxy\u0000 Hybrid and Glass Fiber/Epoxy Composite","authors":"Sanjay Thilakan, N. Mathivanan","doi":"10.4271/05-16-04-0024","DOIUrl":"https://doi.org/10.4271/05-16-04-0024","url":null,"abstract":"Currently, there is a growing tendency to incorporate natural fibers in\u0000 composites due to their affordability, lightweight nature, and eco-friendliness.\u0000 Researchers are continuously exploring new materials that offer improved\u0000 mechanical properties for a broader range of applications. In this work, an\u0000 experimental investigation on tensile and fatigue behavior of jute-wool\u0000 felt-reinforced epoxy hybrid laminate is carried, in addition to an E-glass\u0000 fiber-reinforced epoxy laminate that helps in comparison. Constant amplitude\u0000 tensile fatigue test is conducted for 80%, 70%, and 60% of the ultimate load of\u0000 respective composites at a stress ratio of 0.1 and frequency of 7 Hz for both\u0000 laminates. The jute-wool felt composite showed good fatigue resistance. Though\u0000 glass fiber composite showed higher tensile strength, jute-wool felt composite\u0000 exhibits higher fatigue performance than glass fiber composites at higher stress\u0000 levels. However, at lower stress levels, glass fiber composite shows better\u0000 fatigue resistance than jute-wool felt composite. A prediction model that uses a\u0000 few set of experimental results of fatigue test was able to validate the fatigue\u0000 behavior of composites. The optical microscope images of failed samples were\u0000 analyzed to detect the damage in composites.","PeriodicalId":45859,"journal":{"name":"SAE International Journal of Materials and Manufacturing","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81799916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}