Results 111 to 120 of about 4,851 (264)
Nihon Kikai Gakkai ronbunshu, 2019 The prevention of excessive deformation by thermal ratcheting is important in the elevated temperature design of fast breeder reactors (FBR). In an experimental study that simulated a fast breeder reactor vessel near the coolant surface, it was reported ...
Satoshi OKAJIMA
doaj +1 more source
Microscopic origin of granular ratcheting
, 2008 International audienceNumerical simulations of assemblies of grains under cyclic loading exhibit "granular ratcheting:" a small net deformation occurs with each cycle, leading to a linear accumulation of deformation with cycle number.
García-Rojo, Ramón +2 more
core +1 more source
Cladistics, EarlyView.Abstract Replicated pairs of ancestral and evolutionarily derived populations provide opportunities to test hypotheses about the deterministic laws of evolution. The Asellus aquaticus species complex is an invertebrate model system with several independent surface‐to‐cave transitions and a complicated and unresolved evolutionary history.
Peter Trontelj +3 more
wiley +1 more source
Influence of Residual Stress on Fatigue Failure of Welded Joints
, 2003 This dissertation makes an effort to understand the influence of residual stresses on the fatigue failure of butt- and socket-welded piping joints. In order to achieve this goal, this study develops experimental fatigue failure data and a numerical ...
Lu, Xiangyang
core
Ratcheting Predictive Methods in RCC-MR Code
, 2009 The structures belonging to Gen IV reactors such as Sodium Fast Reactors (SFRs) and High Temperature Gas Reactors (HTGRs) are submitted to high temperatures and high thermal gradients and must be designed against the risk of ratcheting.
Morello Sperandio +2 more
core +1 more source
Scientists’ warning on the global destruction of rock outcrop ecosystems
Conservation Biology, EarlyView.Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula +19 more
wiley +1 more source
Why Have CEO Pay Levels Become Less Diverse?
The Journal of Finance, EarlyView.ABSTRACT This paper documents a new stylized fact: the cross‐sectional variation in CEO pay levels has declined precipitously in recent years. We offer one explanation for this decline, namely, firms are increasingly benchmarking CEO compensation to industry peers closest in size, thereby creating pay clusters.
TORSTEN JOCHEM +2 more
wiley +1 more source
Physical Review E, 2009 Brownian ratchets produce directed motion through rectification of thermal fluctuations and have been used for separation processes and colloidal transport. We propose a flashing ratchet motor that enables the transduction of electrical energy into rotary micromechanical work.
Lim, Jiufu +2 more
openaire +3 more sources
Journal of Prosthodontics, EarlyView.Abstract Purpose To evaluate the marginal gap of two‐piece polyetheretherketone (PEEK) abutments fabricated with different methods, before and after thermal cycling, while also focusing on their pull‐off bond strength. Materials and Methods A two‐piece abutment was virtually designed after digitizing a titanium‐base (Ti‐base) abutment.
Almira Ada Diken Türksayar +6 more
wiley +1 more source
, 2018 Uniaxial ratcheting behavior of Z2CND18.12N austenitic stainless steel used nuclear power plant piping material was studied. The results indicated that ratcheting strain increased with increasing of stress amplitude under the same mean stress and ...
Chen, Haofeng, Chen, Xiaohui, Chen, Xu
core