Results 121 to 130 of about 10,989 (307)
Experimental investigation of reinforced concrete members subjected to reversed cyclic axial loading
Structural Concrete, EarlyView.Abstract This paper presents an experimental campaign of five reinforced concrete members subjected to cyclic axial loading alternating between tension and compression. Fiber optical sensors and digital image correlation, in combination with automated crack detection and measurement, were used to investigate, among other aspects, the development of ...
Simon Karrer +2 more
wiley +1 more source
Interrelation of the stagnant slab, Ontong Java Plateau, and intraplate volcanism as inferred from seismic tomography. [PDF]
Sci Rep, 2021 Obayashi M +9 more
europepmc +1 more source
Bulletin of the Seismological Society of AmericaABSTRACT Seismic tomography is the most abundant source of information about the internal structure of the Earth at scales ranging from a few meters to thousands of kilometers. It constrains the properties of active volcanoes, earthquake fault zones, deep reservoirs and storage sites, glaciers and ice sheets, or the entire globe.
Andreas Fichtner +17 more
openaire +2 more sources
Structural Concrete, EarlyView.Abstract In practice, reinforced concrete (RC) wall‐like columns often have openings to facilitate building services, which creates stress concentrations around the opening, resulting in the weakening of their load‐carrying capacity. This study proposes innovative strengthening methods using near‐surface mounted (NSM) incorporating steel materials to ...
Ahmed Hamoda +4 more
wiley +1 more source
Diffraction and seismic tomography [PDF]
Geophysical Journal International, 1992 SUMMARY Diffraction tomography is formulated in such a way that the data (traveltime4r waveform perturbations) are related to the medium perturbations through the sum of two terms. The first term is the ray integral of ordinary tomography and involves only phase perturbations.
openaire +1 more source
Seismic imaging of crustal structure at mid-ocean ridges: a three-dimensional approach [PDF]
, 2001 Over recent years geological, geochemical and geophysical surveys of mid-ocean ridges have revealed a significant degree of along-axis variability not only in seabed morphology, but also in crustal structure, particularly Numerous geophysical surveys of ...
Day, Anthony J., Day, A.J.
core
Structural Concrete, EarlyView.Abstract This study introduces an innovative approach to strengthening defected reinforced concrete (RC) columns using externally bonded stainless steel and galvanized steel plates. Unlike conventional strengthening methods, this technique replaces traditional transverse stirrups with steel sheets, providing enhanced confinement and ductility.
Ahmed Hamoda +5 more
wiley +1 more source
Application of structural constraint grid tomography velocity modeling in Nanchuan area
Youqicang pingjia yu kaifa, 2020 All the reasons that the surface limestone is exposed in a large area, the signal-to-noise ratio of seismic data is low, the underground structure is complex, and the dip angle of strata is steep make Nanchuan area to be a typical double-complex seismic ...
REN Junxing, MENG Qingli, YANG Fan
doaj
Geodesy and Geodynamics, 2019 We investigate sedimentological and tectonic processes at the central High Atlas, in order to understand their functioning and to build a geodynamic model that placed the area in its current geological frame.
Y. Timoulali +4 more
doaj +1 more source
, 2004 Observations of velocities in sediments containing gashydrates show that the strength of sediments increases with hydrate saturation. Hence it is expected that the attenuation of these sediments will decrease with increasing hydrate saturation.
Minshull, T.A., Chand, S.
core +1 more source