Results 21 to 30 of about 759,222 (305)

Principal component analysis and perturbation theory–based robust damage detection of multifunctional aircraft structure [PDF]

open access: yes, 2013
A fundamental problem in structural damage detection is to define an efficient feature to calculate a damage index. Furthermore, due to perturbations from various sources, we also need to define a rigorous threshold whose overtaking indicates the ...
HAJRYA, Rafik, MECHBAL, Nazih
core   +1 more source

Response of Temperature-Related Rice Disaster to Different Warming Levels Under an RCP8.5 Emission Scenario in a Major Rice Production Region of China

open access: yesFrontiers in Climate, 2022
Rice is the basic food for about 50% of the global population, and feeds two-thirds of the Chinese population. Under the influence of global change, extreme weather, and climate events increase in frequency, duration, and intensity, which affect food ...
Shuangyi Luo   +4 more
doaj   +1 more source

Numerical Investigation of Seismic Performance of Steel Concentrically Braced Frames Subjected to Critical Consecutive Earthquakes [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering
This paper evaluates the effect of critical successive-shocks on the seismic performance of steel concentrically braced frames (CBFs) for significant structural design parameters such as behavior factor(R), displacement amplification factor (Cd), maximum
Sahar Rouzrokh   +2 more
doaj   +1 more source

A new robust flexibility index for structural damage identification and quantification

open access: yes, 2021
In this paper, an enhanced damage indicator using a flexibility index is presented and applied to different complex structures to predict the exact location of damage. Finite Element Method (FEM) is used to model three complex structures, namely a 37-bar
Tran-Ngoc, H   +5 more
core   +1 more source

Experimental Research on Shear Failure Monitoring of Composite Rocks Using Piezoelectric Active Sensing Approach

open access: yesSensors, 2020
Underground space engineering structures are generally subject to extensive damages and significant deformation. Given that composite rocks are prone to shear failure, which cannot be accurately monitored, the piezoelectric active sensing method and ...
Yang Liu   +3 more
doaj   +1 more source

Correlating low energy impact damage with changes in modal parameters: a preliminary study on composite beams [PDF]

open access: yes, 2009
This paper is an experimental study of the effects of multi-site damage on the vibration response of a composite beam damaged by low energy impact. The variation of the modal parameters with different levels of impact energy and density of impact is ...
Morlier, Joseph   +2 more
core   +1 more source

Development of the autoinflammatory disease damage index (ADDI) [PDF]

open access: yesPediatr Rheumatol Online J, 2015
Autoinflammatory diseases cause systemic inflammation which can result in damage to multiple organs. Organ damage can occur before the start of therapy, or when patients experience ongoing inflammation. A validated instrument to measure damage is essential to quantify damage in individual patients, and to compare disease outcomes in clinical studies ...
Annink K   +9 more
europepmc   +4 more sources

Hypertensive target organ damage in Ghanaian civil servants with hypertension. [PDF]

open access: yes, 2009
BACKGROUND: Low levels of detection, treatment and control of hypertension have repeatedly been reported from sub Saharan Africa, potentially increasing the likelihood of target organ damage.
David A Leon   +8 more
core   +1 more source

Multi-Purpose Trees Species Damage Index: Case Study of Wan Abdul Rachman Forest Park Utilization Block, Lampung

open access: yesIndonesian Journal of Social and Environmental Issues, 2022
The Wan Abdul Rachman (WAR) Forest Park (TAHURA) Utilization Block is a location that can be utilized by the community, especially its non-timber forest products. Utilization of non-timber forest products is the type of Multi-Purpose Trees Species (MPTS).
Rahmat Safe'i   +2 more
doaj   +1 more source

Analysis of the Steel Plate Shear Wall of Damage Index with pushover Method and Comparing with Special Steel Moment Frame [PDF]

open access: yesJournal of Structural and Construction Engineering, 2019
Over the recent years, different damage indices have been to predict the building damage, each of which uses different parameters to model the building damage.
ghasem pachideh   +2 more
doaj   +1 more source

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