Results 61 to 70 of about 24,236 (228)

Correction Procedure of Wave Signals for a Viscoelastic Split Hopkinson Pressure Bar [PDF]

Problemy Mechatroniki, 2016
A polymeric split Hopkinson pressure bar technique (SHPB) is preferred for testing materials with low mechanical impedance. However, the use of polymeric bars requires additional analysis for data reduction, temperature complications and additional ...
Jacek JANISZEWSKI, Witold BUŻANTOWICZ, Paweł BARANOWSKI   +2 more
doaj   +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

Integration of a resonant tunneling diode and an optical communications laser [PDF]

, 2006
We report on the first integration of a resonant tunneling diode and an optical communications laser operating at around 1.5 /spl μm.
Farmer, C.D., Hopkinson, M., Ironside, C.N., Slight, T.J., Stanley, C.R.   +4 more
core   +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

Commissioning of universal Split Hopkinson Bar for dynamic compression and tension experiments

Acta Polytechnica CTU Proceedings
Split Hopkinson Bar is an experimental apparatus designed for acquiring material properties in dynamic regime. The apparatus is usually constructed as a single purpose experimental device for specific type of loading, most commonly either compression ...
Lukáš Kocian, Jan Falta, Nela Krčmářová, Tomáš Fíla, Jan Šleichrt   +4 more
doaj   +1 more source

Challenges related to testing of composite materials at high strain rates using the split Hopkinson bar technique

EPJ Web of Conferences, 2018
The design of sample geometries and the measurement of small strains are considered the main challenges when testing composite materials at high strain rates using the split Hopkinson bar technique. The aim of this paper is to assess two types of tensile
Elmahdy Ahmed, Verleysen Patricia
doaj   +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

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

Inverse characterization of UHPC material based on Hopkinson bar test

Applications in Engineering Science, 2021
Coupling scientific researches with engineering applications leads to significant increase in development of innovative materials. Since time-consuming and expensive experimental tests are required for characterization of materials under dynamic loading ...
Mohammad Reza Khosravani
doaj   +1 more source

Random telegraph signals in proton irradiated CCDs and APS [PDF]

, 2008
Random telegraph dark signal fluctuations have been studied in two types of CCD and two types of CMOS active pixel sensor after proton irradiation at 1.5, 10 and 60 MeV.
Goiffon, Vincent, Hopkinson, Gordon R., Mohammadzadeh, Ali   +2 more
core   +1 more source