Results 1 to 10 of about 44,611 (263)

Identification of Multiple Cracks in Composite Laminated Beams Using Perturbation to Dynamic Equilibrium [PDF]

Sensors, 2021
Identification of cracks in beam-type components is significant to ensure the safety of structures. Among the approaches relying on mode shapes, the concept of transverse pseudo-force (TPF) has been well proved for single and multiple crack ...
Aimin Deng, Maosen Cao, Qitian Lu, Wei Xu   +3 more
doaj   +2 more sources

A Self-Healing Crystal That Repairs Multiple Cracks. [PDF]

J Am Chem Soc
We report both cracking and self-healing in crystals occurring during a thermal phase transition, followed by a topochemical polymerization. A squaramide-based monomer was designed where the azide and alkyne units of adjacent molecules are positioned favorably for a topochemical click reaction. The monomer undergoes spontaneous single-crystal-to-single-
Pathan JR, Balan H, Commins P, Ravi A, Al-Handawi MB, Hou IC, Naumov P, Sureshan KM.   +7 more
europepmc   +3 more sources

Three-dimensional fracture and fatigue crack propagation analysis in structures with multiple cracks

Computers and Structures, 2015
A procedure is presented for fatigue crack growth simulations of multiple cracks.Stress intensity factors are calculated using three-dimensional enriched elements.During simulations, models are re-meshed to reflect updated crack geometries.Results show excellent agreement when compared with data from the literature.The method can also handle multiple ...
Ali O Ayhan
exaly   +4 more sources

An experimental study and axial tensile constitutive model of the toughness of PP-SACC for rapid repairs

Frontiers in Built Environment, 2023
To improve the economic benefits of engineered cementitious composites and control the repair cycle, repair materials were designed, with the key components of the mixture being low-cost polypropylene (PP) fibers and fast-setting sulfoaluminate cement ...
Wen Xie, Xuefeng Xu, Chunlei Xu, Chunlei Xu, Feng Tian, Qiwen Mao, Helong Li, Lin Liu, Gongyi Qin   +8 more
doaj   +1 more source

Modeling of Multiple Fatigue Cracks for the Aircraft Wing Corner Box Based on Non-ordinary State-based Peridynamics

Metals, 2022
In the current research, we propose a novel non-ordinary state-based peridynamics (PD) fatigue model for multiple cracks’ initiation and growth under tension–tension fatigue load. In each loading cycle, the fatigue loading is redistributed throughout the
Junzhao Han, Guozhong Wang, Xiaoyu Zhao, Rong Chen, Wenhua Chen   +4 more
doaj   +1 more source

Field-enriched finite element method for numerical simulation of initiation, propagation and coalescence of multiple cracks

Yantu gongcheng xuebao, 2022
The study on the mechanical response and cracking behaviors of brittle rock materials with multiple cracks is of vital significance for the design and stability analysis of rock engineering structures.
ZHOU Xiao-ping , JIA Zhi-ming
doaj   +1 more source

Effective Identification and Localization of Single and Multiple Breathing Cracks in Beams under Gaussian Excitation Using Time-Domain Analysis

Mathematics, 2022
The output response of any intact oscillatory system subjected to a Gaussian excitation is also Gaussian in nature. On the contrary, when the system contains any type of underlying nonlinearity, the output signal is definitely non-Gaussian.
Tareq Al-hababi, Nizar Faisal Alkayem, Huaxin Zhu, Li Cui, Shixiang Zhang, Maosen Cao   +5 more
doaj   +1 more source

Formulation for Multiple Cracks Problem in Thermoelectric-Bonded Materials Using Hypersingular Integral Equations

Mathematics, 2023
New formulations are produced for problems associated with multiple cracks in the upper part of thermoelectric-bonded materials subjected to remote stress using hypersingular integral equations (HSIEs).
Muhammad Haziq Iqmal Mohd Nordin, Khairum Bin Hamzah, Najiyah Safwa Khashi’ie, Iskandar Waini, Nik Mohd Asri Nik Long, Saadatul Fitri   +5 more
doaj   +1 more source

Interacting Multiple Cracks [PDF]

Key Engineering Materials, 1997
A method is presented to solve the plane elastic problem of a solid weakened by numerous cracks. The method provides an efficient computational procedure to solve crack interaction problems. Besides non-intersecting multiple open cracks, the method can tl eat intersectional cracks, surface contact cracks or even partial surface contact cracks.
X.L. Han, Tzu Chiang Wang
openaire   +1 more source

Numerical Investigation of Thermoelastic Crack Interactions in Various Materials using a Novel Enrichment Approach [PDF]

International Journal of Mathematical, Engineering and Management Sciences, 2023
Crack interaction studies play a crucial role in understanding and predicting the fracture behaviour of various engineering components subjected to thermomechanical loads.
Ayush Awasthi, Mohit Pant
doaj   +1 more source