Qiqihar University

Mechanical Performance of Corrugated Steel−Concrete Composite Structures: An Experimental Study on Arch Bridges

Abstract Corrugated steel arch bridges have been extensively employed in transportation infrastructure owing to their favorable mechanical performance and construction effi Corrugated steel arch bridges are widely used in transportation infrastructure but suffer from stress conce...

Design method for vibration fatigue suppression of railway freight car body structures and its full-scale vehicle verification

This study investigates the frequent early cracking of sidewall welds in a specific export railway hopper car under mechanized vibration unloading conditions, aiming to reveal the fracture mechanism and propose an effective suppression method. The investigation revealed that the...

Wavelength- and Energy-Dependent Nonlinear Absorption and Transient Absorption in Silver Nanoparticles

Nonlinear absorption (NLA) in silver nanoparticles (Ag NPs) is strongly affected by plasmonic field enhancement. However, its wavelength- and energy-dependent evolution on the red side of the surface plasmon resonance (SPR) band remains insufficiently understood. Here, we systema...