Results 21 to 30 of about 768 (221)

CALCULATION OF 3-D SURFACE CRACK STRESS INTENSITY FACTOR BASED ON APDL AND UIDL

Jixie qiangdu, 2020
In engineering,cracks are usually regarded as semi-elliptical surface cracks. It is not easy to establish a complete finite element model of a semi-elliptical surface crack,thus a quarter of the crack model is generally used to calculate the stress ...
CHE FuYan, GENG LiMing
doaj  

A theoretical model of semi-elliptic surface crack growth

Chinese Journal of Aeronautics, 2014
AbstractA theoretical model of semi-elliptic surface crack growth based on the low cycle strain damage accumulation near the crack tip along the cracking direction and the Newman–Raju formula is developed. The crack is regarded as a sharp notch with a small curvature radius and the process zone is assumed to be the size of cyclic plastic zone.
Shi, Kaikai, Cai, Lixun, Chen, Long, Bao, Chen   +3 more
openaire   +1 more source

Numerical study of semi-elliptical cracks in the critical position of pipe elbow

Fracture and Structural Integrity, 2019
Pipelines are considered as a major tool to transport hydrocarbons due to its important role in transporting fluids taking into account the operating conditions.
Bassam Gamal Nasser Muthanna, Omar Bouledroua, Madjid Meriem-Benziane, Mohammed Hadj-Meliani, Guy Pluvinage, Rami Khalid Suleiman   +5 more
doaj   +3 more sources

Fully plastic solution for a semi-elliptical surface crack.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 1985
To estimate the possibility of LBB (Leak-Before-Break), one of the important design concept for the balance of the safety margin and the economy of the structure, it is necessary to investigate the behavior of the inner surface crack in the structure.
YAGAWA, Genki, UEDA, Hiroyoshi, TAKAHASHI, Yukio   +2 more
openaire   +2 more sources

Conformational Switching of Proteins on Material Surfaces Enabled by Peptide‐Oriented Adsorption

Advanced Functional Materials, EarlyView.
Responsive biointerfaces could be achieved using conformationally responsive proteins; however, their interconversion can be lost upon surface adsorption. Herein, we demonstrate that the incorporation a Au binding peptide into calmodulin allows for binding control on Au wherein the protein retains conformational switching. This capability was confirmed
Sakthirupini Ramamurthy, Kyle B. Meerbott, Lorenzo Travaglini, Garima S. Dobhal, Artur Sawicki, Marc R. Knecht, Tiffany R. Walsh, Dominic J. Glover   +7 more
wiley   +1 more source

Probabilistic elastic-plastic fracture mechanics analysis of propagation of cracks in pipes under internal pressure

Fracture and Structural Integrity, 2020
This study presents a three dimensional finite element method analysis of semi-elliptical surface cracks in pipes under internal pressure load. In the elastic plastic case, estimates of the J-integral are presented for various ratios including crack ...
Mechab Bela�d, Medjahdi Malika, Salem Mokadem, Serier Boualem   +3 more
doaj   +3 more sources

Three-dimensional crack propagation simulation based on a nonlocal algorithm of P91 steel under fatigue and creep–fatigue loading

Mechanical Engineering Journal
This study conducted a three-dimensional crack propagation simulation based on a nonlocal algorithm of P91 steel under fatigue and creep–fatigue loading. A damage-coupled inelastic constitutive model incorporating fatigue and creep damage parameters into
Akihiro MOTOKI, Masayuki ARAI
doaj   +1 more source

An IGA based domain integral method for the evaluation of the J-integral using the singular patch method

Mechanical Engineering Journal, 2022
In this paper, a domain integral method to evaluate the J-integral along with a singular patch method for three-dimensional linear elastic fracture mechanics analyses using Isogeometric analysis (IGA) are presented.
Omar TABAZA, Hiroshi OKADA, Daichi NAKAHARA   +2 more
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Numerical Study on Dimensions and Orientation Effect of Semi-Elliptical Cracks in PE100 Pipelines

International Journal of Applied Mechanics and Engineering, 2021
The through-thickness crack or surface crack in PE100 pipes subjected to internal pressure represents a serious risk to the structural integrity of HDPE pipes, which has attracted wide attention in modern industry.
T.A. Zitouni, Z. Labed
doaj   +1 more source