Results 131 to 140 of about 470,496 (337)

Differences in dynamic modulus of elasticity determined by three vibration methods and their relationship with static modulus of elasticity

open access: yesMaderas: Ciencia y Tecnología, 2016
Dynamic modulus of elasticity was determined in clearwood samples of eight tropical hardwood species using longitudinal vibrations, flexural vibration and ultrasonic transit-time methods.
Shakti Chauhan, Anil Sethy
doaj  

Shear modulus of several kinds of Japanese bamboo obtained by flexural vibration test [PDF]

open access: bronze, 2009
Yoshitaka Kubojima   +3 more
openalex   +1 more source

Damping Modification Factors for Pile–Induced Filtering Effect

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Period–dependent Damping Modification Factors are usually applied to the 5%–damped pseudo–acceleration response spectrum at free field conditions to derive the seismic demand for structures with damping ratio other than 5%. Likewise, the response spectrum at the foundation level of pile–supported structures may differ from the free field ...
Emmanouil Rovithis   +3 more
wiley   +1 more source

Seismic Enhancement of Masonry‐Infilled Substandard Reinforced Concrete Frames Using Lightweight Steel Exoskeleton

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT A significant portion of existing reinforced concrete (RC) structures in seismically active regions was constructed prior to the adoption of modern seismic design standards, leaving them highly susceptible to earthquake‐induced damage. The vulnerabilities of these structures, often exacerbated by material degradation, have been starkly ...
İsmail Ozan Demirel   +3 more
wiley   +1 more source

Combined Vertical and Horizontal Components of Near‐Source Earthquakes and Impact on Base‐Isolated Structures

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Over recent decades, the collection of seismic data has improved the understanding of near‐fault ground motion effects, which involve both horizontal and vertical components. Among the most significant effects are fault‐normal directivity, which concentrates seismic energy into an intense, long‐period pulse, and fault‐parallel fling step ...
Giulia Giuliani   +7 more
wiley   +1 more source

Flexural and Cracking Behaviour of Roller Compacted Asphalt Concrete

open access: yesJournal of Engineering and Sustainable Development, 2005
This work is intended to evaluate the flexural and cracking behavior of both Dense and Gap graded Asphalt concrete. Slab samples of 30×30×7cm size have been constructed in the laboratory using the TRRL roller wheel compactor. Various Asphalt percentages
Saad Issa Sarsam
doaj  

Behavior of Long‐Slotted Perforated Steel Plate Fuses in Timber Brace End Connections

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Steel perforated plate fuses have emerged as a promising solution for mass timber seismic force‐resisting systems, offering tunable energy dissipation mechanisms, such as flexural and shear yielding, through geometric adjustments. This study examines the cyclic performance of perforated steel plate fuses employed in timber braced frames, with ...
Yahia Ahmed   +2 more
wiley   +1 more source

Effect of Ammonium Polyphosphate/Silicate Content on the Postfire Mechanics of Epoxy Glass‐Fiber Composites Using Facile Chocolate Bar‐Inspired Structures

open access: yesFire and Materials, Volume 49, Issue 3, Page 329-346, April 2025.
ABSTRACT This study investigates the postfire mechanical properties of epoxy glass‐fiber reinforced composites (EP GFRCs) using increasing concentrations of ammonium polyphosphate (APP) and inorganic silicate (InSi) to modify the char and fire residue.
Sruthi Sunder   +5 more
wiley   +1 more source

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