Results 11 to 20 of about 11,713 (257)

Characterization of Micro-Crack Orientation in a Thin Plate Using Quasi-Static Component Generated by Incident Ultrasonic Lamb Waves

open access: yesSensors
The directivity of the quasi-static component (QSC) is quantitatively investigated for evaluating the orientation of a micro-crack buried in a thin solid plate using the numerical simulation method. Based on the bilinear stress–strain constitutive model,
Liang Zhao   +9 more
doaj   +2 more sources

The Method and Experiment of Micro-Crack Identification Using OFDR Strain Measurement Technology

open access: yesPhotonics
The precise evaluation of micro-crack sizes and locations is crucial for the safe operation of structures. Traditional detection techniques, however, suffer from low spatial resolution, making it difficult to accurately locate micrometer-scale cracks.
Bin Chen   +5 more
doaj   +2 more sources

Study on relative shrinkage of cement-based micro-concrete for durable concrete repair

open access: yesCleaner Engineering and Technology, 2022
This paper presents the investigation into the crack formation in micro-concrete due to their bond strength and drying shrinkage under normal and accelerated drying conditions at the interface between the substrate and micro concrete in a concrete repair.
Dipti Ranjan Nayak   +2 more
doaj   +1 more source

Repair of concrete existing micro-cracks by use of microbially induced carbonate precipitation [PDF]

open access: yesMATEC Web of Conferences, 2023
Micro-crack is the start of concrete deterioration and failure, though it does not decrease the bearing capacity in the beginning. In order to prolong the service life of existing concrete structures, it is important to repair the existing micro-cracks ...
Wang Jianyun, Gao Ruixiao, Ma Jinhu
doaj   +1 more source

Investigation of crack propagation in X38CrMoV5 (AISI H11) tool steel at elevated temperatures [PDF]

open access: yes, 2010
A method is developed to evaluate the surface fatigue damage of hot forming tools (forging, HPDC) that undergo thermo mechanical loading and environmental attack.
Rezaï-Aria, Farhad   +2 more
core   +1 more source

Crack study of recasting layer on workpiece surface in Micro-EDM [PDF]

open access: yesMATEC Web of Conferences, 2022
In this paper, the crack phenomenon of different materials was studied according to the surface morphology of recasting layer of micro EDM workpiece. In this paper, high-speed steel and titanium alloy are used as workpiece materials, and the RC pulse ...
Wang Chunmei   +3 more
doaj   +1 more source

Effects of graphite nodules on crack growth behaviour of austempered ductile iron [PDF]

open access: yes, 2007
Austempered ductile iron (ADI) is a candidate material for camshafts, where however, the early stages of fatigue damage are of major concern during service.
Reed, P.A.S., Gao, N., Stokes, B.
core   +1 more source

Influence of micro-crack on the propagation of a semi-infinite crack [PDF]

open access: yes, 2020
The main objective of this research is to determine the influence of micro-crack on the propagation of a semi-infinite crack. This study is mainly based on the determination of the strain energy during the interaction between the semi-infinite crack and the neighboring microcrack.
Hamid Hamli Benzahar   +2 more
openaire   +1 more source

Macro- and micro-cracking in one-dimensional elasticity [PDF]

open access: yesInternational Journal of Solids and Structures, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
DEL PIERO, Gianpietro, L. Truskinovsky
openaire   +3 more sources

Development of a fretting-fatigue mapping concept: The effect of material properties and surface treatments [PDF]

open access: yes, 2009
Fretting-fatigue induced by combined localized cyclic contact motion and external bulk fatigue loadings may result in premature and dramatic failure of the contacting components.
Kubiak, K   +3 more
core   +1 more source

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