Results 1 to 10 of about 1,642,260 (307)

Determination of the effects of the rebar-cement bond parameters variation in UHPFRC using FA and ANN [PDF]

Science of Sintering
The experimental study included the design and production of ultra-high performance steel fiber-reinforced concrete (UHPFRC). The physical and mechanical properties of UHPFRC were investigated in a laboratory setting.
Bojović Dragan, Terzić Anja, Nikolić Dragan, Janković Ksenija   +3 more
doaj   +1 more source

Residual stress and distortion analysis of laser powder bed additive manufactured parts using the incremental hole drilling method and the cantilever method

Journal of Advanced Joining Processes
This study investigates residual stresses and distortion in additively manufactured 316L austenitic steel and M350 martensitic high strength steel produced by laser powder bed fusion under varying process parameters.
Moritz Käß, Stefan Weihe, Martin Werz
doaj   +1 more source

Very High Cycle Fatigue Behavior of TA11 Titanium Alloy

Journal of Aeronautical Materials, 2017
The conventional fatigue test method was used to obtain the very high cycle fatigue (VHCF) limits of 3×107 and 1×108 cycles for TA11 titanium alloy in different temperatures and stress ratios.
JIAO Zehui, YU Huichen, ZHONG Bin, LI Xudong, ZHOU Jingyi   +4 more
doaj   +1 more source

Squaraine Planar-Heterojunction Solar Cells

International Journal of Photoenergy, 2009
The photovoltaic performance of squaraine-based organic solar cells is investigated. Two squaraine derivatives with extraordinarily high extinction coefficients are used as electron donors in bilayer heterojunctions with fullerene C60 as electron ...
Bin Fan, Ylenia Maniglio, Marina Simeunovic, Simon Kuster, Thomas Geiger, Roland Hany, Frank Nüesch   +6 more
doaj   +1 more source

Bond line shear strength of structural wood adhesives at high temperatures up to wood carbonization – A classification approach

Results in Engineering
The European timber fire design code EN 1995-1-2 presently specifies that adhesives for timber construction products shall provide integrity throughout the intended fire exposure time, yet no test or requirement specifications are given.
Simon Aicher, Maximilian Henning, Aaron Münzer   +2 more
doaj   +1 more source

Friction and Wear Behaviour of Graphite Filled Polymer Composites in Hydrogen Environment

Tribology Online, 2015
High performance polymer composites have been intensively investigated for tribological applications in air, but rarely in hydrogen environment. Author’s previous benchmark of composites in liquid hydrogen (LH2) showed that graphite filled polymers have ...
Géraldine Theiler, Thomas Gradt
doaj   +1 more source

An Ultra-High Frequency Vibration-Based Fatigue Test and Its Comparative Study of a Titanium Alloy in the VHCF Regime

Metals, 2020
This paper proposes an ultra-high frequency (UHF) fatigue test of a titanium alloy TA11 based on electrodynamic shaker in order to develop a feasible testing method in the VHCF regime.
Wei Xu, Yanguang Zhao, Xin Chen, Bin Zhong, Huichen Yu, Yuhuai He, Chunhu Tao   +6 more
doaj   +1 more source

Embedding and cross-sectioning as a sample preparation procedure for accurate and representative size and shape measurement of nanopowders

Scientific Reports
Reliable measurement of the size of polydisperse, complex-shaped commercial nanopowders is a difficult but necessary task, e.g., for regulatory requirements and toxicity risk assessment.
Paul Mrkwitschka, Bastian Rühle, Petra Kuchenbecker, Oliver Löhmann, Franziska Lindemann, Vasile-Dan Hodoroaba   +5 more
doaj   +1 more source

Feasibility Study on Laser Powder Bed Fusion of Ferritic Steel in High Vacuum Atmosphere

Journal of Manufacturing and Materials Processing
The boiling point of metals is dependent on the ambient pressure. Therefore, in laser-based fusion welding and additive manufacturing processes, the resulting process regime, ranging from heat conduction welding to the keyhole mode, is also influenced by
Steffen Fritz, Sven Sewalski, Stefan Weihe, Martin Werz   +3 more
doaj   +1 more source

Impact of the Process Parameters, the Measurement Conditions and the Pre-Machining on the Residual Stress State of Deep Rolled Specimens

Journal of Manufacturing and Materials Processing, 2019
Mechanical surface treatments, e.g., deep rolling, are widely spread finishing processes due to their ability to enhance the fatigue strength of the treated materials with means of cold working and inducement of favorable compressive residual stresses ...
Nataliya Lyubenova, Dirk Bähre, Lukas Krupp, Julie Fouquet, Titouan Cronier, Jay Patel, Joachim Ernst Hoffmann   +6 more
doaj   +1 more source