Results 31 to 40 of about 781,009 (287)

Slow crack growth : models and experiments [PDF]

, 2007
The properties of slow crack growth in brittle materials are analyzed both theoretically and experimentally. We propose a model based on a thermally activated rupture process.
Ciliberto, Sergio, Santucci, Stéphane, Vanel, Loic   +2 more
core   +4 more sources

Interaction between Edge-Crack and Aggregate in Silicate-Based Composite

Transactions of the VŠB: Technical University of Ostrava, Civil Engineering Series, 2017
The paper deals with investigation of the interaction between an edge-crack and an aggregate in a silicate-based composite, because adding of aggregates into basic matrix material can improve the fracture mechanical properties of the material ...
Malíková Lucie, Klusák Jan
doaj   +1 more source

Preliminary Study on Assessing Delaminated Cracks in Cement Asphalt Mortar Layer of High-Speed Rail Track Using Traditional and Normalized Impact–Echo Methods

Sensors, 2020
The severe deterioration of a cement asphalt (CA) mortar layer may lead to the movement of the upper concrete slab and impair the safety of the speedy train.
Ying-Tzu Ke, Chia-Chi Cheng, Yung-Chiang Lin, Yi-Qing Ni, Keng-Tsang Hsu, Tai-Tung Wai   +5 more
doaj   +1 more source

Automatic Method for Detecting Deformation Cracks in Landslides Based on Multidimensional Information Fusion

Remote Sensing
As cracks are a precursor landslide deformation feature, they can provide forecasting information that is useful for the early identification of landslides and determining motion instability characteristics.
Bo Deng, Qiang Xu, Xiujun Dong, Weile Li, Mingtang Wu, Yuanzhen Ju, Qiulin He   +6 more
doaj   +1 more source

Fracture Characteristics of Sliding Crack in Brittle Rock: Analysis Based on an Improved Equivalent Crack Model

Frontiers in Earth Science, 2022
Under low confinement axial compression, the failure of brittle rock is mainly caused by tensile fracture. Many scholars adopt the sliding crack as an idealized model to present the intrinsic mechanism of the tensile failure but due to the complex ...
Yin Zhang, Yin Zhang, Shenghua Cui, Zhibing Yu, Jianlong Cheng   +4 more
doaj   +1 more source

Different Scale Crack Contour Extraction Techniques for Bridges Incorporating Improved YOLOv5 and GCNet

IEEE Access
Bridge cracks, as the main form of damage to bridge structures, have a significant impact on the safety and service life of bridges. Aiming at the lack of accuracy and efficiency of the traditional detection methods and the existing deep learning-based ...
Yiming Wang, Yanfang Guo
doaj   +1 more source

Entre a sepultura e a cadeia: um olhar etnográfico sobre a conversão religiosa de usuários de crack em São Paulo

Religião e Sociedade, 2021
Resumo: Por meio de pesquisa etnográfica realizada na Cracolândia paulistana (2011-2015), este artigo aborda a conversão religiosa atrelada ao do mundo do crime e das drogas.
Deborah Fromm
doaj   +1 more source

Mode I crack tip fields: strain gradient plasticity theory versus J2 flow theory

, 2019
The mode I crack tip asymptotic response of a solid characterised by strain gradient plasticity is investigated. It is found that elastic strains dominate plastic strains near the crack tip, and thus the Cauchy stress and the strain state are given ...
Fleck, Norman A., Martínez-Pañeda, Emilio   +1 more
core   +1 more source

Fatigue crack growth in thin notched woven glass composites under tensile loading. Part II: modelling [PDF]

, 2011
Fatigue propagation of a through-the-thickness crack in thin woven glass laminates is difficult to model when using homogeneous material assumption. Crack growth depends on both the fatigue behaviour of the fibres and of the matrix, these two phenomena ...
Barrau, Jean-Jacques, Bizeul, Matthieu, Bouvet, Christophe, Cuenca, Rémy   +3 more
core   +3 more sources

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source