Results 81 to 90 of about 248,535 (303)

A study on the compressive strength of thick carbon fibre-epoxy laminates [PDF]

open access: yes, 2007
This paper describes an experimental study that examines the effect of specimen size on the axial compressive strength of IM7/8552 carbon fibre/epoxy unidirectional laminates (UD).
Argon   +18 more
core   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff   +9 more
wiley   +1 more source

Simulation of intersecting hydraulic fractures with natural fractures considering layer barrier effect

open access: yesYouqicang pingjia yu kaifa, 2022
At present, the hydraulic fracturing is a key technology for shale oil and gas exploitation. The natural fractures will be encountered in the process of compression fracture propagation, and the propagation characteristics of compression fractures after ...
ZHOU Xin   +4 more
doaj  

Finite volume analysis of reinforced concrete structure cracking using a thermo-plastic-damage model [PDF]

open access: yes, 2019
This paper proposes modifications to the phenomenological model formulation called CDPM2, developed by Grassl et al. [1]. The proposed modifications are designed to enhance model performance with coupling to temperature effects.
Bessette, C.   +4 more
core  

Investigations on micro-mechanical properties of polycrystalline Ti(C,N) and Zr(C,N) coatings [PDF]

open access: yes, 2018
Micro-mechanical properties of Ti(C,N) and Zr(C,N) coatings deposited by chemical vapor deposition on a WC-Co cemented carbide substrate were examined by micro-compression testing using a nanoindenter equipped with a flat punch.
El Azhari, Idriss   +6 more
core   +3 more sources

Assessing Altered Coating Adhesion on Plasma‐Deoxidized Surfaces Under Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates the effectiveness of atmospheric pressure plasma pretreatment in modifying silicon and stainless steel surfaces to improve adhesion. Argon‐hydrogen plasma increases surface roughness and improves adhesion strength, whereas pure argon results in smoother surfaces and structural changes.
Selina Raumel   +6 more
wiley   +1 more source

A portable load cell for in-situ ore impact breakage testing [PDF]

open access: yes, 2002
This paper discusses the design and characterisation of a short, and hence portable impact load cell for in-situ quantification of ore breakage properties under impact loading conditions.
Banini, George, Bourgeois, Florent
core   +1 more source

Evaluating Energy Absorption Performance of Filled Lattice Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney   +2 more
wiley   +1 more source

Influence of the distribution of bone cement along the fracture line on the curative effect of vertebral augmentation

open access: yesJournal of International Medical Research, 2019
Objective The present study was performed to evaluate the effect of different bone cement distributions along the fracture line on clinical and imaging outcomes of vertebral augmentation. Methods In total, 84 patients who underwent vertebral augmentation
Kai Xu   +5 more
doaj   +1 more source

Simulation of the Hot Deformation and Fracture Behavior of Reduced Activation Ferritic/Martensitic 13CrMoNbV Steel

open access: yesApplied Sciences, 2020
This study describes deformation behavior and fracture during compression and tension at high temperatures of ferritic/martensitic 13CrMoNbV steel. Hot compression and tensile tests were carried out in the temperature range of 1100−1275 °C ...
Asad Shaikh   +3 more
doaj   +1 more source

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