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Study on the Flexural Fatigue Performance of CFRP-OFBG Plate Reinforced Damaged Steel Beams
This paper studies the flexural fatigue performance of damaged steel beams strengthened by carbon fiber reinforced plastic-optical fiber bragg grating (CFRP-OFBG) plates. By analyzing the test beam’s failure mechanism under cyclic loading and the strain data monitored by the CFRP-OFBG panel in real-time, a life prediction model based on cumulative fatigue damage is proposed. The test results show that CFRP-OFBG plate reinforcement effectively reduces the fatigue crack growth rate of damaged steel beams and increases the fatigue life of damaged steel beams by 22.46%. The analysis and test results show that the minimum error between the calculated value of the life prediction model and the test value is −24.13%, and the maximum error is −5.61%. This study provides some suggestions for improving the service life of existing fatigue-damaged steel beams and establishing a simple fatigue life evaluation model.
Study on the Flexural Fatigue Performance of CFRP-OFBG Plate Reinforced Damaged Steel Beams
This paper studies the flexural fatigue performance of damaged steel beams strengthened by carbon fiber reinforced plastic-optical fiber bragg grating (CFRP-OFBG) plates. By analyzing the test beam’s failure mechanism under cyclic loading and the strain data monitored by the CFRP-OFBG panel in real-time, a life prediction model based on cumulative fatigue damage is proposed. The test results show that CFRP-OFBG plate reinforcement effectively reduces the fatigue crack growth rate of damaged steel beams and increases the fatigue life of damaged steel beams by 22.46%. The analysis and test results show that the minimum error between the calculated value of the life prediction model and the test value is −24.13%, and the maximum error is −5.61%. This study provides some suggestions for improving the service life of existing fatigue-damaged steel beams and establishing a simple fatigue life evaluation model.
Study on the Flexural Fatigue Performance of CFRP-OFBG Plate Reinforced Damaged Steel Beams
KSCE J Civ Eng
Deng, Langni (Autor:in) / Zhong, Mengjun (Autor:in) / Liu, Yang (Autor:in) / Liao, Ling (Autor:in) / Lai, Shijin (Autor:in) / Lei, Lizhen (Autor:in) / Zhou, Zheng (Autor:in)
KSCE Journal of Civil Engineering ; 25 ; 4686-4697
01.12.2021
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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