Results 71 to 80 of about 166,287 (248)

Diametrical and Axial Indirect Tensile Testing Using H-Ometer on a Weak Rock Model and Its Finite Element Simulation [PDF]

open access: yes, 2001
A method of testing for the tensile strength of weak rock from H-Ometer is presented. H-Ometer tests are carried out on artificial weak rock specimen to test for the accuracy of the model. The weak rock is a simulation of weakly cemented sandstone, which
Ahmad, Juraidah
core  

Evidence for the formation of comet 67P/Churyumov-Gerasimenko through gravitational collapse of a bound clump of pebbles [PDF]

open access: yes, 2017
The processes that led to the formation of the planetary bodies in the Solar System are still not fully understood. Using the results obtained with the comprehensive suite of instruments on-board ESA’s Rosetta mission, we present evidence that comet 67P ...
Acton   +128 more
core   +3 more sources

Characterisation of the z-directional tensile strength of composite hydroentangled nonwovens

open access: yesPolymer Testing, 2012
Abstract Composite nonwovens are fabrics consisting of two or more layers that are combined by cohesion, fusion or adhesion. The z -directional tensile strength (ZTS) of such fabrics is important in various applications, including wound dressings, absorbent hygiene products, roofing carrier fabrics, absorbent wipes, filter media and wall coverings ...
M. Tausif, S.J. Russell
openaire   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland   +5 more
wiley   +1 more source

Shock compression and spallation of single crystal tantalum [PDF]

open access: yes, 2012
We present molecular dynamics simulations of shock-induced plasticity and spall damage in single crystal Ta described by a recently developed embedded-atom-method (EAM) potential and a volumedependent qEAM potential.
An, Q.   +6 more
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

Micromechanics-based evaluation of strain rate effect on direct tensile failure in brittle rocks during dynamic geohazards

open access: yesGeohazard Mechanics
Brittle rocks exhibit significantly lower dynamic direct tensile strength compared to their compressive strength, and the tensile strength is relatively difficult to be quantitatively measured through experiments.
Xiaozhao Li   +3 more
doaj   +1 more source

Mechanical properties of connected carbon nanorings via molecular dynamics simulation [PDF]

open access: yes, 2005
Stable, carbon nanotori can be constructed from nanotubes. In theory, such rings could be used to fabricate networks that are extremely flexible and offer a high strength-to-density ratio.
Chen, Nan   +3 more
core   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat   +7 more
wiley   +1 more source

STRENGTH SHRINKAGE AND CREEP OF CONCRETE IN TENSION AND COMPRESSION

open access: yesCivil Engineering Dimension, 2006
Strength, shrinkage and creep of concrete in tension and compression have been determined and the relationship between those properties was studied. Direct tensile tests were applied to measure those properties in tension.
S A Kristiawan
doaj  

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