{"title":"Behavior of RC Beams Strengthened by CFRP and Steel Rope under Frequent Impact Load","authors":"Aziz I. Abdulla.et.al","doi":"10.32441/jaset.01.01.04","DOIUrl":"https://doi.org/10.32441/jaset.01.01.04","url":null,"abstract":"\u0000 \u0000 \u0000 \u0000 \u0000 \u0000 \u0000 \u0000The current research aims to study the effect of impact loads on reinforced concrete beams strengthened by carbon fibers and/or steel wire rope. The use of steel wire rope is suggested as a new economic technique to strengthen and rehabilitate reinforced concrete beams, as well as to fix the fibers that are being used in strengthening. Reinforced concrete beams subjected to impact load using both carbon fibers and steel wire rope were tested, and the results were compared with the results obtained from reference beams, from beams strengthened with steel wire rope only, and from beams strengthened with carbon fibers only. The results of concrete beams strengthened using any of the three methods and subjected to impact loading showed a decrease in maximum deflection, residual deflection, damping time, and in the number of strikes to reach each phase of failure. The best results, however, were attained when strengthening using steel rope with and without the addition of carbon fibers, which improved the values of dynamic deflection, residual deflection, damping time, and the number of strikes to reach each phase of failure, when compared to beams strengthened by CFRP strips only. \u0000 \u0000 \u0000 \u0000 \u0000 \u0000 \u0000 \u0000","PeriodicalId":431188,"journal":{"name":"Journal of Advanced Sciences and Engineering Technologies","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115500030","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":"Friction Stir welding and Friction Stir Processing for 6061-T6 Aluminum Alloy","authors":"R. Kiter, Hussam Jumma Chalob","doi":"10.32441/jaset.02.01.04","DOIUrl":"https://doi.org/10.32441/jaset.02.01.04","url":null,"abstract":"\u0000 \u0000 \u0000 \u00006061-T6 Aluminum Alloy plates were welded by using Friction Stir Welding (FSW) at different rotation and welding speeds. The effects of two factors on Ultimate Tensile Strength (UTS), which include rotation and welding speed at 2o tool tilt angle, were investigated. Ultimate Tensile strength increases with decrease the welding speeds and increases the rotational speeds. The rotation speeds have a higher effect on ultimate tensile strength when compared with the welding speeds. Friction Stir Processing (FSP, Double pass) led to increasing the ultimate tensile strength and elongation at same welding and rotation speeds. FSP lead to improve fatigue life and reduce residual stress. \u0000 \u0000 \u0000 \u0000","PeriodicalId":431188,"journal":{"name":"Journal of Advanced Sciences and Engineering Technologies","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124022016","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}