Results 51 to 60 of about 11,967 (233)

Aromatic hyperbranched polyester/RTM6 epoxy resin for EXTREME dynamic loading aeronautical applications [PDF]

, 2020
The effects of the addition of an aromatic hyperbranched polyester (AHBP) on thermal, mechanical, and fracture toughness properties of a thermosetting resin system were investigated.
Borriello, Anna, Elmahdy, Ahmed, Verleysen, Patricia, Zarrelli, Mauro, Zotti, Aldobenedetto, Zuppolini, Simona   +5 more
core   +1 more source

Experimental study on dynamic behavior analysis of coal and its acoustic emission response characteristics under impact failure

Deep Underground Science and Engineering, EarlyView.
Based on acoustic emission response characteristics, it can be more accurate to identify the damage evolution process of coal under the combined dynamic and static loads, reveal the moment corresponding to coal damage, and identify the characteristics of coal failure. The research results are conducive to the further use of acoustic emission monitoring
Wei Zhang, Huijian Fu, Yingke Liu, Zhaoxi Long, Yang Liu, Tengrui Yang, Yanbo Sun, Mingjun Jiang, Xiaojiang Wen, Yue Niu, Ruixi Cheng   +10 more
wiley   +1 more source

Measurement of local strain and heat propagation during high-temperature testing in a split-Hopkinson tension bar system

EPJ Web of Conferences, 2012
Aluminium alloys are commonly used by the industry due to their good mechanical properties and their relatively low density. An accurate prediction of the behaviour of aluminium alloys under a wide range of temperatures and strain rates is important in ...
Børvik T., Hopperstad O.S., Clausen A.H., Vilamosa V., Skjervold S.   +4 more
doaj   +1 more source

Stress analysis of crack characteristic of anthracite under dynamic loading

Deep Underground Science and Engineering, EarlyView.
In this article, the dynamic compression test of anthracite under five strain rates is carried out, the evolution law of three kinds of crack characteristic stress is analyzed, and a prediction model of the crack characteristic stress threshold considering the strain rate effect is established. Then, the rationality of crack characteristic stress under
Yun Bai, Feng Gao, Ning Luo, Zhizhen Zhang, Yue Niu, Shanjie Su   +5 more
wiley   +1 more source

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Proton transfer in histidine-tryptophan heterodimers embedded in helium droplets

, 2015
We used cold helium droplets as nano-scale reactors to form and ionize, by electron bombardment and charge transfer, aromatic amino acid heterodimers of histidine with tryptophan, methyl-tryptophan, and indole. The molecular interaction occurring through
Bellina, Bruno, Kresin, Vitaly V., Merthe, Daniel J.   +2 more
core   +1 more source

Experimental study of the high strain rate shear behaviour of Ti6Al4V [PDF]

, 2011
Three different high strain rate shear test techniques are applied on the titanium alloy Ti6Al4V. Two techniques for testing of bulk materials and one technique for sheet materials are used: torsion of thin-walled tubes, compression of hat-shaped ...
Degrieck, Joris, Peirs, Jan, Verleysen, Patricia   +2 more
core   +2 more sources

A General Group Testing Strategy for Discovering Chemical Cooperativity

Angewandte Chemie, Volume 138, Issue 11, 9 March 2026.
A combinatorial design theory‐based group testing strategy coupled with luminescence screening to uncover cooperative interactions in a large combinatorial space. Iterative deconvolution identifies reactive molecular pairs and enables the discovery of trifluoromethylthiolation (SCF3) reagents.
Philipp M. Pflüger, Felix Katzenburg, Frederik Sandfort, Michael Teders, Adrián Gómez‐Suárez, Eric A. Standley, Matthew N. Hopkinson, Constantin G. Daniliuc, Andreas Heuer, Frank Glorius   +9 more
wiley   +2 more sources

Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures

Deep Underground Science and Engineering, EarlyView.
This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao, Jiachen Xu, Kai Zhang, Changtai Zhou   +3 more
wiley   +1 more source

Optimal CCD readout by digital correlated double sampling

, 2015
Digital correlated double sampling (DCDS), a readout technique for charge-coupled devices (CCD), is gaining popularity in astronomical applications. By using an oversampling ADC and a digital filter, a DCDS system can achieve a better performance than ...
Abusleme, Angel, Alessandri, Cristobal, Alvarez-Fontecilla, Enrique, Guarini, Marcelo, Guzman, Dani, Passalacqua, Ignacio   +5 more
core   +1 more source