Results 91 to 100 of about 5,195 (300)
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
Response of linear-elastic structures to near-fault ground motions
, 2012 Recorded earthquake ground motions in the near-fault regions have different and peculiar characteristics compared to that in the far-fault region. The main difference is a strong long period pulse in the velocity record due to forward directivity effects.
Kristján Ingvi Ólason 1981-
core
BuildingsThis study aims to explore the seismic performance of large-span concrete-filled steel tubular (CFST) arch bridges under near-fault pulse-like ground motions (PLGMs).
Jun Shi +5 more
doaj +1 more source
Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing
Advanced Engineering Materials, EarlyView.The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai +6 more
wiley +1 more source
Near-fault ground motions: Demand and structural capacity requirements
, 2001 The improvement of structural capacity against large displacement demand of near-fault ground motions has been the subject of research for the last decade.
Gulkan, P, Akkar, Dede Sinan
core
Shock and Vibration, 2019 This paper focuses on the seismic isolation design of near-fault bridges under the seismic excitations of near-fault ground motions in high-intensity earthquake zones and proposes a combined control system using lead rubber bearings (LRBs) and cable ...
Xiaoli Li, Yan Shi
doaj +1 more source
Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys
Advanced Engineering Materials, EarlyView.Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak +3 more
wiley +1 more source
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 +2 more
wiley +1 more source
Near-Fault Ground Motions Causing the Great Hanshin Earthquake Disaster
, 1996 The ground motions in the near-fault region in Kobe from the Hyogo-ken Nanbu earthquake were characterized by two large long-period (1 to 2 seconds) pulses due to forward rupture directivity.
入倉, 孝次郎
core
Near-fault and far-fault ground motion effects on cable-supported bridges
, 2017 In this paper a cable-stayed bridge and a suspension bridge with closer main span lengths are considered and the bridge responses obtained from the near-fault and far-fault ground motion cases are compared for both bridge models to underline the relative
Karaca, Hayrettin +5 more
core +1 more source