Results 41 to 50 of about 7,243,608 (344)

Surface-improvement mechanism of hybrid electrochemical discharge process using variable-amplitude pulses

, 2020
Superalloys are commonly used in aircraft manufacturing; however, the requirements for high surface quality and machining accuracy make them difficult to machine.
Yan Zhang, Zhengyang Xu, Yu Wang, Qin Ni, X. Ling   +4 more
semanticscholar   +1 more source

Study on the Mechanical Properties and Energy Absorption Characteristics of Bionic Variable-Amplitude TPMS Structures

Proceedings
Introduction: The three-period minimal surface (TPMS) structure has great potential in the fields of lightweight and energy absorption due to its high strength, high porosity, and self-supporting characteristics [...]
Xiaofei Ma, Ce Guo, Xiao Wang
doaj   +1 more source

Estimation of fatigue life on heat-treated 0.45%C steel under repeated two-step variable amplitude loading

Nihon Kikai Gakkai ronbunshu, 2018
In order to design a rotating shaft, it is necessary to investigate the fatigue characteristics under the variable amplitude loading by using a rotating bending fatigue machine.
Toru TAKASE, Atsuhiro KOYAMA, Takeshi UCHIDA   +2 more
doaj   +1 more source

Sulla stima della vita a fatica di giunti saldati soggetti a carichi multiassiali ad ampiezza variabile [PDF]

Fracture and Structural Integrity, 2009
Nel presente articolo viene proposta una nuova metodologia di progettazione a fatica, basata sull’utilizzo del metodo delle Curve di Wöhler Modificate, per la previsione della vita a fatica di giunzioni saldate, sia in acciaio che in alluminio, soggette
R. Tovo, D. Benasciutti, L. Susmel
doaj  

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

A two-step multiaxial racetrack filter algorithm for non-proportional load histories [PDF]

Fracture and Structural Integrity, 2017
The recently proposed multiaxial racetrack filter (MRF) is able to deal with general non-proportional multiaxial load histories. While only requiring a single user-defined scalar filter amplitude, the MRF is able to synchronously eliminate non-damaging ...
Marco Antonio Meggiolaro, Jaime Tupiassú Pinho de Castro , Hao Wu   +2 more
doaj   +3 more sources

Current stress optimization control strategy of the buck topology with the variable frequency/amplitude mode

Frontiers in Energy Research, 2023
The Buck circuit is a common topology in DC-DC converter. The existing control strategies have the advantages of short modulation time and high dynamic performance, but they also have the disadvantages of poor active modulation of the working mode of the
Ning Li, Zhuang Li, Yujie Cao, Deng Wei, Zihan Xiao, Yan Zhang   +5 more
doaj   +1 more source

Amplitude Effect in Cepheid Variables [PDF]

Nature, 1945
IN the interesting review1 of the pulsation theory in his George Darwin Lecture of 1943 before the Royal Astronomical Society, Prof. S. Rosseland has indicated the importance of unharmonic oscillations in explaining the Cepheid characteristics, and brought out the effect of the amplitude in lengthening the pulsational period, pointed out by Kluyver2 in
openaire   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Blue large-amplitude pulsators as a new class of variable stars

, 2017
Regular intrinsic brightness variations observed in many stars are caused by pulsations. These pulsations provide information on the global and structural parameters of the star.
Angeloni, R., di Mille, F., Dziembowski, W. A., Kozlowski, S., Latour, M., Mroz, P., Pawlak, M., Pietrukowicz, P., Poleski, R., Skowron, D., Skowron, J., Soszynski, I., Szymanski, M. K., Udalski, A., Ulaczyk, K., Wyrzykowski, L.   +15 more
core   +2 more sources