Results 71 to 80 of about 11,928 (261)

Individuals with Multi‐Joint Osteoarthritis Demonstrate Larger Longitudinal Declines in Frailty: Data from the Canadian Longitudinal Study on Aging

Arthritis Care &Research, Accepted Article.
Objective Test the hypothesis that multi‐joint osteoarthritis would modify the relation between time and frailty progression, where more affected joints would lead to larger declines over 6‐years compared to those without osteoarthritis using data from the Canadian Longitudinal Study on Aging.
Carson Halliwell, Rebecca Moyer, Myles W. O'Brien   +2 more
wiley   +1 more source

dynoGP: Deep Gaussian Processes for Dynamic System Identification

International Journal of Adaptive Control and Signal Processing, EarlyView.
This work introduces a novel class of deep models for system identification, dynamical deep Gaussian processes, which combine the strengths of data‐driven methods, such as those based on neural network architectures, with the ability to output a probability distribution for uncertainty representation.
Alessio Benavoli, Marco Forgione, Dario Piga   +2 more
wiley   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Dynamic Response and Seismic Control of Isolated Structures Using a Tuned Mass Damper Under Near-fault Pulse-type and Far-fault Long-period Ground Motions

工程科学与技术
ObjectiveLong-period ground motions have a serious impact on long-period structures and may even cause damage. Currently, seismic isolation technology has demonstrated excellent technical advantages.
KANG Yingjie, ZHANG Zewen, LIU Qingkuan, PAN Peng   +3 more
doaj  

Hybrid Control System for Greater Resilience Using Multiple Isolation and Building Connection

Frontiers in Built Environment, 2016
An innovative hybrid control building system of multiple isolation and connection is proposed and investigated using both time-history and input energy responses for various types of ground motions together with transfer functions.
Masaki Taniguchi, Kohei Fujita, Masaaki Tsuji, Izuru Takewaki   +3 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Long-period ground motion and deep subsurface structure in Hokkaido: A review

BUTSURI-TANSA(Geophysical Exploration), 2006
本論説においては，北海道における長周期地震動（周期 3 秒から20秒の地震動）と深部地盤構造についての研究をレビューする。長周期地震動に関する研究は，気象庁 1 倍強震計（機械式変位計：固有周期＝6 秒（水平動），5 秒（上下動））の記録の解析から始められた。この強震計は，十勝平野や勇払平野のような大きな堆積盆地において，大地震の際に S 波に続く盆地表面波（盆地生成表面波と盆地転換表面波：前者は盆地への S 波の入射によって，後者は盆地への表面波の入射によって 2 次的に励起された表面波である）をきれいに観測している。デジタル観測計器及び広帯域強震計の開発に伴い，盆地内でのアレー観測から，これら表面波の波動の性質及び伝播特性が明らかにされるようになった。一方，深部地盤構造の研究は，石油 ...
Sasatani, Tsutomu, Maeda, Takahiro, Takai, Nobuo   +2 more
openaire   +2 more sources

Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals

Advanced Engineering Materials, EarlyView.
This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao, Sriram Subramanian, Gianluca Memoli   +2 more
wiley   +1 more source

Characterization of slip on fault in shallow zone above seismogenic zone for inland crustal earthquakes with surface ruptures

Earth, Planets and Space
Large shallow slips play a key role in generating long-period ground motions near faults during inland crustal earthquakes with surface ruptures. In this study, we investigated the source characteristics of the shallow zone (≤ ~ 3 km depth), interpreted ...
Ken Miyakoshi, Yujia Guo, Kazuhiro Somei, Susumu Kurahashi, Yasuhiro Matsumoto, Naoto Inoue, Takashi Kumamoto, Katsuhiro Kamae, Kojiro Irikura   +8 more
doaj   +1 more source