| contributor author | Majumdar Shrabani;Ali Riyaz;Kumar Anand;Deb Arghya | |
| date accessioned | 2019-02-26T07:31:07Z | |
| date available | 2019-02-26T07:31:07Z | |
| date issued | 2018 | |
| identifier other | %28ASCE%29MT.1943-5533.0002173.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4247540 | |
| description abstract | This paper investigates high-cycle fatigue (HCF) failure in thermomechanically treated (TMT) rebars using fractographic analysis. Most fatigue failures are found to initiate at the root of the transverse ribs, irrespective of rebar diameter. Three-dimensional finite-element (FE) analysis is used to study the effect of modifications to the rib geometry on stress concentrations at these critical locations. Modification of the ratio of the radius (r) of the root of the transverse rib to its height (h) is found to reduce stress concentrations at the rib root. A procedure combining FE analysis with ideas adapted from notch fatigue is developed to predict the fatigue life of rebars with optimum r/h ratio. The predicted fatigue life of a 16-mm-diameter rebar with optimum r/h ratio is found to be significantly higher than that of the original rebar. Pullout tests reveal that the proposed modification to the rib design does not result in any deterioration in bond strength between rebar and concrete. | |
| publisher | American Society of Civil Engineers | |
| title | Optimum Rib Design in TMT Rebars to Enhance Fatigue Life While Retaining Bond Strength | |
| type | Journal Paper | |
| journal volume | 30 | |
| journal issue | 3 | |
| journal title | Journal of Materials in Civil Engineering | |
| identifier doi | 10.1061/(ASCE)MT.1943-5533.0002173 | |
| page | 4017313 | |
| tree | Journal of Materials in Civil Engineering:;2018:;Volume ( 030 ):;issue: 003 | |
| contenttype | Fulltext | |
