The performance of vibration-based damage identification techniques for current condition evaluation of existing bridges is studied through their application to dynamic response of an existing concrete bridge. First, in situ dynamic tests were performed and modal parameters (mode shapes and frequencies) were identified. As previous sets of in situ dynamic parameters were not available, the refe...

To date the term “Fatigue Damage” has had an ambiguous usage in fatigue community. This paper explains reason for poor predictive results of existing damage rules, such as Miner’s rule, through precise observation small crack growth during multiple step loadings. For exact evaluation it is crucially important to attend phenomenon continuous decrease limit with until final failure. It stress amp...

Grounding a human to the earth has resulted in changes in the physiology of the body. A pilot study on grounding and eccentric contractions demonstrated shortened duration of pain, reduced creatine kinase (CK), and differences in blood parameters. This follow-up study was conducted to investigate the effects of grounding after moderate eccentric contractions on pain, CK, and complete blood coun...