Guided wave ultrasonic testing has been widely used for nondestructive and long-range evaluation of diverse mechanical structures, such as pipes plates. In general, a large number guided modes exist even in the simplest geometries, they exhibit highly dispersive characteristics. Thus, sophisticated excitation methods elaborate modal analyses need to be implemented excite, acquire, process well-...

New procedures for the analysis of heat flow are summarized and further applications are presented. The methods may be considered as a special case of a more general formulation of the thermodynamics of irreversible processes. This formulation is based on the introduction of a new thermodynamic potential, the concept of flow field as a state variable, and the use of Lagrangian techniques and ge...

As is well known, in the current design codes, shear strength of beams calculated based on modified truss theory, which does not consider effects flange area T-beams. The main objective this paper was to gain a better understanding and enhance experimental database behavior RC T-beams illustrate contribution capacity To accomplish aim, specially designed program executed, its test results were ...

The bridge has been a crucial element of the transportation system U.S.A. for many years. National Bridge Inventory (NBI) reported more than 615,000 national bridges in 2018. Maintaining and fixing is task agencies to keep road network connected. Louisiana, which 12,899 bridges, was selected as study site this study. American Road Transportation Builders Association (ARTBA) 2019 that 13% all Lo...

introduction: to determine the prevalence of depressive disorder and it's related factors in the patients with rheumatoid arthritis. methods: this cross-sectional study was conductd from april 2013 to august 2014.a total of 81 patients with rheumatoid arthritis (ra) were enrolled from rheumatology clinic, shahid beheshti hospital, kashan/ iran. the severety of depressive disorder was measured b...

in this study, behavior of pin-loaded glass fiber reinforced with polyethylene laminated composites with different stacking sequence and different dimensions has been observed experimentally and stress analysis was performed using ansys software. the aim is to investigate stresses, failure strength and failure mode of composite laminates containing a pin loaded hole when the material exhibits l...

Flexible Roll Forming (FRF) allows the forming of components with a variable cross section along length component. However, process has only limited application in automotive industry due to wrinkling flange which currently prevents high strength steels and limits part shape complexity. This paper presents new technology, Incremental Shape Rolling (ISR), where pre-cut blank is clamped between t...