Results 101 to 110 of about 59,652 (302)

Enrichment of the Boundary Element Method through the Partition of Unity Method for Fracture Analysis using Local and Global Formulations [PDF]

, 2010
The present thesis proposes an innovative technique of applying enrichment to the Boundary Element Method to allow accurate analysis of 2D crack problems. An overview of fracture mechanics is given, with particular emphasis given to numerical methods and
SIMPSON, ROBERT
core  

Scaling of fracture systems in geological media [PDF]

, 2001
Scaling in fracture systems has become an active field of research in the last 25 years motivated by practical applications in hazardous waste disposal, hydrocarbon reservoir management, and earthquake hazard assessment.
Berkowitz, B., Bonnet, E., O. Bour, B. Berkowitz, E. Bonnet, P. Davy, Odling, N. E., Davy, P., I. Main, P. Cowie, N. E. Odling, Bour, O., Main, I. G.; id_orcid   +12 more
core   +1 more source

A new approach to the study of the size and the geometry effect on compressive strength in concrete

Results in Engineering
This study investigates the relationship between the compressive strength of cylindrical and cubic concrete specimens, focusing on the influence of specimen shape, size, concrete type, and casting orientation.
Ángel De La Rosa, Gonzalo Ruiz
doaj   +1 more source

A review of experimental approaches to fracture toughness evaluation at the micro-scale

Materials & Design, 2019
The discipline of fracture mechanics was born almost a century ago through the pioneering work of A.A. Griffith, and saw particularly rapid growth in the second half of 20th century when it became an indispensable tool in the development of advanced ...
J. Ast, M. Ghidelli, K. Durst, M. Göken, M. Sebastiani, A.M. Korsunsky   +5 more
doaj   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

The influence of hydrostatic pressure on the interlaminar fracture toughness of carbon/epoxy composites [PDF]

, 2006
The use of composites for deep sea applications requires a thorough understanding of the behaviour of these materials. While several studies have examined the influence of pressure on in-plane properties few data are available for the interlaminar ...
Peleau, M., Davies, P., Cartié, Denis D. R., Partridge, Ivana K.   +3 more
core   +1 more source

Numerical modeling of thermally-induced fractures in a large rock salt mass

Journal of Rock Mechanics and Geotechnical Engineering, 2018
Numerical modeling of thermally-induced fractures is a concern for many geo-structures including deep underground energy storage caverns. In this paper, we present the numerical simulation of a large-scale cooling experiment performed in an underground ...
D.T. Ngo, F.L. Pellet
doaj   +1 more source

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

Experimental and numerical assessment of the work of fracture in injection-moulded low-density polyethylene [PDF]

, 2018
The fracture mechanics properties of injection-moulded low-density polyethylene (LDPE) sheets were investigated both experimentally and numerically.
Pär A.T. Olsson, Kroon, Martin, Martin Kroon, Olsson, Pär,, Olsson, Pär A T, Kroon, Martin,, Andreasson, Eskil,, Viktor Petersson, Andreasson, Eskil, Olsson, Pär, Olsson, Pär A T,, Petersson, Viktor, Eskil Andreasson, Lund University., Petersson, Viktor,   +14 more
core   +1 more source

Investigation on water inrush fracture mechanics model based on fracture mechanics and microseismic monitoring

Ain Shams Engineering Journal
North China coalfield is one of the most severe coal fields threatened by Ordovician limestone water (buried depth exceeding 1000 m). In this paper, the hydraulic mechanism of Ordovician limestone water in the complex geological structure are studied. An
Genshui Wu, Weijian Yu, Hanxiao Guo, Bao Pan, Xun Liu   +4 more
doaj   +1 more source